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PostgreSQL prep

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Update of vendored SQL libs and refactoring of store provider layer.
This commit is contained in:
HarveyKandola 2018-09-26 17:59:56 +01:00
parent d0e005f638
commit b455e5eaf5
105 changed files with 10949 additions and 2376 deletions
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1
vendor/github.com/go-sql-driver/mysql/.gitignore generated vendored
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@ -6,3 +6,4 @@
Icon?
ehthumbs.db
Thumbs.db
.idea

108
vendor/github.com/go-sql-driver/mysql/.travis.yml generated vendored
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@ -1,13 +1,107 @@
sudo: false
language: go
go:
- 1.2
- 1.3
- 1.4
- 1.5
- 1.6
- 1.7
- tip
- 1.7.x
- 1.8.x
- 1.9.x
- 1.10.x
- master
before_install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
before_script:
- echo -e "[server]\ninnodb_log_file_size=256MB\ninnodb_buffer_pool_size=512MB\nmax_allowed_packet=16MB" | sudo tee -a /etc/mysql/my.cnf
- sudo service mysql restart
- .travis/wait_mysql.sh
- mysql -e 'create database gotest;'
matrix:
include:
- env: DB=MYSQL8
sudo: required
dist: trusty
go: 1.10.x
services:
- docker
before_install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
- docker pull mysql:8.0
- docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret
mysql:8.0 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1
- cp .travis/docker.cnf ~/.my.cnf
- .travis/wait_mysql.sh
before_script:
- export MYSQL_TEST_USER=gotest
- export MYSQL_TEST_PASS=secret
- export MYSQL_TEST_ADDR=127.0.0.1:3307
- export MYSQL_TEST_CONCURRENT=1
- env: DB=MYSQL57
sudo: required
dist: trusty
go: 1.10.x
services:
- docker
before_install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
- docker pull mysql:5.7
- docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret
mysql:5.7 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1
- cp .travis/docker.cnf ~/.my.cnf
- .travis/wait_mysql.sh
before_script:
- export MYSQL_TEST_USER=gotest
- export MYSQL_TEST_PASS=secret
- export MYSQL_TEST_ADDR=127.0.0.1:3307
- export MYSQL_TEST_CONCURRENT=1
- env: DB=MARIA55
sudo: required
dist: trusty
go: 1.10.x
services:
- docker
before_install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
- docker pull mariadb:5.5
- docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret
mariadb:5.5 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1
- cp .travis/docker.cnf ~/.my.cnf
- .travis/wait_mysql.sh
before_script:
- export MYSQL_TEST_USER=gotest
- export MYSQL_TEST_PASS=secret
- export MYSQL_TEST_ADDR=127.0.0.1:3307
- export MYSQL_TEST_CONCURRENT=1
- env: DB=MARIA10_1
sudo: required
dist: trusty
go: 1.10.x
services:
- docker
before_install:
- go get golang.org/x/tools/cmd/cover
- go get github.com/mattn/goveralls
- docker pull mariadb:10.1
- docker run -d -p 127.0.0.1:3307:3306 --name mysqld -e MYSQL_DATABASE=gotest -e MYSQL_USER=gotest -e MYSQL_PASSWORD=secret -e MYSQL_ROOT_PASSWORD=verysecret
mariadb:10.1 --innodb_log_file_size=256MB --innodb_buffer_pool_size=512MB --max_allowed_packet=16MB --local-infile=1
- cp .travis/docker.cnf ~/.my.cnf
- .travis/wait_mysql.sh
before_script:
- export MYSQL_TEST_USER=gotest
- export MYSQL_TEST_PASS=secret
- export MYSQL_TEST_ADDR=127.0.0.1:3307
- export MYSQL_TEST_CONCURRENT=1
script:
- go test -v -covermode=count -coverprofile=coverage.out
- go vet ./...
- .travis/gofmt.sh
after_script:
- $HOME/gopath/bin/goveralls -coverprofile=coverage.out -service=travis-ci

33
vendor/github.com/go-sql-driver/mysql/AUTHORS generated vendored
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@ -12,35 +12,63 @@
# Individual Persons
Aaron Hopkins <go-sql-driver at die.net>
Achille Roussel <achille.roussel at gmail.com>
Alexey Palazhchenko <alexey.palazhchenko at gmail.com>
Andrew Reid <andrew.reid at tixtrack.com>
Arne Hormann <arnehormann at gmail.com>
Asta Xie <xiemengjun at gmail.com>
Bulat Gaifullin <gaifullinbf at gmail.com>
Carlos Nieto <jose.carlos at menteslibres.net>
Chris Moos <chris at tech9computers.com>
Craig Wilson <craiggwilson at gmail.com>
Daniel Montoya <dsmontoyam at gmail.com>
Daniel Nichter <nil at codenode.com>
Daniël van Eeden <git at myname.nl>
Dave Protasowski <dprotaso at gmail.com>
DisposaBoy <disposaboy at dby.me>
Egor Smolyakov <egorsmkv at gmail.com>
Evan Shaw <evan at vendhq.com>
Frederick Mayle <frederickmayle at gmail.com>
Gustavo Kristic <gkristic at gmail.com>
Hajime Nakagami <nakagami at gmail.com>
Hanno Braun <mail at hannobraun.com>
Henri Yandell <flamefew at gmail.com>
Hirotaka Yamamoto <ymmt2005 at gmail.com>
ICHINOSE Shogo <shogo82148 at gmail.com>
INADA Naoki <songofacandy at gmail.com>
Jacek Szwec <szwec.jacek at gmail.com>
James Harr <james.harr at gmail.com>
Jeff Hodges <jeff at somethingsimilar.com>
Jeffrey Charles <jeffreycharles at gmail.com>
Jian Zhen <zhenjl at gmail.com>
Joshua Prunier <joshua.prunier at gmail.com>
Julien Lefevre <julien.lefevr at gmail.com>
Julien Schmidt <go-sql-driver at julienschmidt.com>
Justin Li <jli at j-li.net>
Justin Nuß <nuss.justin at gmail.com>
Kamil Dziedzic <kamil at klecza.pl>
Kevin Malachowski <kevin at chowski.com>
Kieron Woodhouse <kieron.woodhouse at infosum.com>
Lennart Rudolph <lrudolph at hmc.edu>
Leonardo YongUk Kim <dalinaum at gmail.com>
Linh Tran Tuan <linhduonggnu at gmail.com>
Lion Yang <lion at aosc.xyz>
Luca Looz <luca.looz92 at gmail.com>
Lucas Liu <extrafliu at gmail.com>
Luke Scott <luke at webconnex.com>
Maciej Zimnoch <maciej.zimnoch at codilime.com>
Michael Woolnough <michael.woolnough at gmail.com>
Nicola Peduzzi <thenikso at gmail.com>
Olivier Mengué <dolmen at cpan.org>
oscarzhao <oscarzhaosl at gmail.com>
Paul Bonser <misterpib at gmail.com>
Peter Schultz <peter.schultz at classmarkets.com>
Rebecca Chin <rchin at pivotal.io>
Reed Allman <rdallman10 at gmail.com>
Richard Wilkes <wilkes at me.com>
Robert Russell <robert at rrbrussell.com>
Runrioter Wung <runrioter at gmail.com>
Shuode Li <elemount at qq.com>
Soroush Pour <me at soroushjp.com>
Stan Putrya <root.vagner at gmail.com>
Stanley Gunawan <gunawan.stanley at gmail.com>
@ -52,5 +80,10 @@ Zhenye Xie <xiezhenye at gmail.com>
# Organizations
Barracuda Networks, Inc.
Counting Ltd.
Google Inc.
InfoSum Ltd.
Keybase Inc.
Percona LLC
Pivotal Inc.
Stripe Inc.

48
vendor/github.com/go-sql-driver/mysql/CHANGELOG.md generated vendored
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@ -1,3 +1,51 @@
## Version 1.4 (2018-06-03)
Changes:
- Documentation fixes (#530, #535, #567)
- Refactoring (#575, #579, #580, #581, #603, #615, #704)
- Cache column names (#444)
- Sort the DSN parameters in DSNs generated from a config (#637)
- Allow native password authentication by default (#644)
- Use the default port if it is missing in the DSN (#668)
- Removed the `strict` mode (#676)
- Do not query `max_allowed_packet` by default (#680)
- Dropped support Go 1.6 and lower (#696)
- Updated `ConvertValue()` to match the database/sql/driver implementation (#760)
- Document the usage of `0000-00-00T00:00:00` as the time.Time zero value (#783)
- Improved the compatibility of the authentication system (#807)
New Features:
- Multi-Results support (#537)
- `rejectReadOnly` DSN option (#604)
- `context.Context` support (#608, #612, #627, #761)
- Transaction isolation level support (#619, #744)
- Read-Only transactions support (#618, #634)
- `NewConfig` function which initializes a config with default values (#679)
- Implemented the `ColumnType` interfaces (#667, #724)
- Support for custom string types in `ConvertValue` (#623)
- Implemented `NamedValueChecker`, improving support for uint64 with high bit set (#690, #709, #710)
- `caching_sha2_password` authentication plugin support (#794, #800, #801, #802)
- Implemented `driver.SessionResetter` (#779)
- `sha256_password` authentication plugin support (#808)
Bugfixes:
- Use the DSN hostname as TLS default ServerName if `tls=true` (#564, #718)
- Fixed LOAD LOCAL DATA INFILE for empty files (#590)
- Removed columns definition cache since it sometimes cached invalid data (#592)
- Don't mutate registered TLS configs (#600)
- Make RegisterTLSConfig concurrency-safe (#613)
- Handle missing auth data in the handshake packet correctly (#646)
- Do not retry queries when data was written to avoid data corruption (#302, #736)
- Cache the connection pointer for error handling before invalidating it (#678)
- Fixed imports for appengine/cloudsql (#700)
- Fix sending STMT_LONG_DATA for 0 byte data (#734)
- Set correct capacity for []bytes read from length-encoded strings (#766)
- Make RegisterDial concurrency-safe (#773)
## Version 1.3 (2016-12-01)
Changes:

127
vendor/github.com/go-sql-driver/mysql/README.md generated vendored
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@ -1,6 +1,6 @@
# Go-MySQL-Driver
A MySQL-Driver for Go's [database/sql](http://golang.org/pkg/database/sql) package
A MySQL-Driver for Go's [database/sql](https://golang.org/pkg/database/sql/) package
![Go-MySQL-Driver logo](https://raw.github.com/wiki/go-sql-driver/mysql/gomysql_m.png "Golang Gopher holding the MySQL Dolphin")
@ -15,6 +15,9 @@ A MySQL-Driver for Go's [database/sql](http://golang.org/pkg/database/sql) packa
* [Address](#address)
* [Parameters](#parameters)
* [Examples](#examples)
* [Connection pool and timeouts](#connection-pool-and-timeouts)
* [context.Context Support](#contextcontext-support)
* [ColumnType Support](#columntype-support)
* [LOAD DATA LOCAL INFILE support](#load-data-local-infile-support)
* [time.Time support](#timetime-support)
* [Unicode support](#unicode-support)
@ -26,31 +29,31 @@ A MySQL-Driver for Go's [database/sql](http://golang.org/pkg/database/sql) packa
## Features
* Lightweight and [fast](https://github.com/go-sql-driver/sql-benchmark "golang MySQL-Driver performance")
* Native Go implementation. No C-bindings, just pure Go
* Connections over TCP/IPv4, TCP/IPv6, Unix domain sockets or [custom protocols](http://godoc.org/github.com/go-sql-driver/mysql#DialFunc)
* Connections over TCP/IPv4, TCP/IPv6, Unix domain sockets or [custom protocols](https://godoc.org/github.com/go-sql-driver/mysql#DialFunc)
* Automatic handling of broken connections
* Automatic Connection Pooling *(by database/sql package)*
* Supports queries larger than 16MB
* Full [`sql.RawBytes`](http://golang.org/pkg/database/sql/#RawBytes) support.
* Full [`sql.RawBytes`](https://golang.org/pkg/database/sql/#RawBytes) support.
* Intelligent `LONG DATA` handling in prepared statements
* Secure `LOAD DATA LOCAL INFILE` support with file Whitelisting and `io.Reader` support
* Optional `time.Time` parsing
* Optional placeholder interpolation
## Requirements
* Go 1.2 or higher
* Go 1.7 or higher. We aim to support the 3 latest versions of Go.
* MySQL (4.1+), MariaDB, Percona Server, Google CloudSQL or Sphinx (2.2.3+)
---------------------------------------
## Installation
Simple install the package to your [$GOPATH](http://code.google.com/p/go-wiki/wiki/GOPATH "GOPATH") with the [go tool](http://golang.org/cmd/go/ "go command") from shell:
Simple install the package to your [$GOPATH](https://github.com/golang/go/wiki/GOPATH "GOPATH") with the [go tool](https://golang.org/cmd/go/ "go command") from shell:
```bash
$ go get github.com/go-sql-driver/mysql
$ go get -u github.com/go-sql-driver/mysql
```
Make sure [Git is installed](http://git-scm.com/downloads) on your machine and in your system's `PATH`.
Make sure [Git is installed](https://git-scm.com/downloads) on your machine and in your system's `PATH`.
## Usage
_Go MySQL Driver_ is an implementation of Go's `database/sql/driver` interface. You only need to import the driver and can use the full [`database/sql`](http://golang.org/pkg/database/sql) API then.
_Go MySQL Driver_ is an implementation of Go's `database/sql/driver` interface. You only need to import the driver and can use the full [`database/sql`](https://golang.org/pkg/database/sql/) API then.
Use `mysql` as `driverName` and a valid [DSN](#dsn-data-source-name) as `dataSourceName`:
```go
@ -95,13 +98,14 @@ Alternatively, [Config.FormatDSN](https://godoc.org/github.com/go-sql-driver/mys
Passwords can consist of any character. Escaping is **not** necessary.
#### Protocol
See [net.Dial](http://golang.org/pkg/net/#Dial) for more information which networks are available.
See [net.Dial](https://golang.org/pkg/net/#Dial) for more information which networks are available.
In general you should use an Unix domain socket if available and TCP otherwise for best performance.
#### Address
For TCP and UDP networks, addresses have the form `host:port`.
For TCP and UDP networks, addresses have the form `host[:port]`.
If `port` is omitted, the default port will be used.
If `host` is a literal IPv6 address, it must be enclosed in square brackets.
The functions [net.JoinHostPort](http://golang.org/pkg/net/#JoinHostPort) and [net.SplitHostPort](http://golang.org/pkg/net/#SplitHostPort) manipulate addresses in this form.
The functions [net.JoinHostPort](https://golang.org/pkg/net/#JoinHostPort) and [net.SplitHostPort](https://golang.org/pkg/net/#SplitHostPort) manipulate addresses in this form.
For Unix domain sockets the address is the absolute path to the MySQL-Server-socket, e.g. `/var/run/mysqld/mysqld.sock` or `/tmp/mysql.sock`.
@ -136,9 +140,9 @@ Default: false
```
Type: bool
Valid Values: true, false
Default: false
Default: true
```
`allowNativePasswords=true` allows the usage of the mysql native password method.
`allowNativePasswords=false` disallows the usage of MySQL native password method.
##### `allowOldPasswords`
@ -220,19 +224,19 @@ Valid Values: <escaped name>
Default: UTC
```
Sets the location for time.Time values (when using `parseTime=true`). *"Local"* sets the system's location. See [time.LoadLocation](http://golang.org/pkg/time/#LoadLocation) for details.
Sets the location for time.Time values (when using `parseTime=true`). *"Local"* sets the system's location. See [time.LoadLocation](https://golang.org/pkg/time/#LoadLocation) for details.
Note that this sets the location for time.Time values but does not change MySQL's [time_zone setting](https://dev.mysql.com/doc/refman/5.5/en/time-zone-support.html). For that see the [time_zone system variable](#system-variables), which can also be set as a DSN parameter.
Please keep in mind, that param values must be [url.QueryEscape](http://golang.org/pkg/net/url/#QueryEscape)'ed. Alternatively you can manually replace the `/` with `%2F`. For example `US/Pacific` would be `loc=US%2FPacific`.
Please keep in mind, that param values must be [url.QueryEscape](https://golang.org/pkg/net/url/#QueryEscape)'ed. Alternatively you can manually replace the `/` with `%2F`. For example `US/Pacific` would be `loc=US%2FPacific`.
##### `maxAllowedPacket`
```
Type: decimal number
Default: 0
Default: 4194304
```
Max packet size allowed in bytes. Use `maxAllowedPacket=0` to automatically fetch the `max_allowed_packet` variable from server.
Max packet size allowed in bytes. The default value is 4 MiB and should be adjusted to match the server settings. `maxAllowedPacket=0` can be used to automatically fetch the `max_allowed_packet` variable from server *on every connection*.
##### `multiStatements`
@ -255,18 +259,19 @@ Default: false
```
`parseTime=true` changes the output type of `DATE` and `DATETIME` values to `time.Time` instead of `[]byte` / `string`
The date or datetime like `0000-00-00 00:00:00` is converted into zero value of `time.Time`.
##### `readTimeout`
```
Type: decimal number
Type: duration
Default: 0
```
I/O read timeout. The value must be a decimal number with an unit suffix ( *"ms"*, *"s"*, *"m"*, *"h"* ), such as *"30s"*, *"0.5m"* or *"1m30s"*.
I/O read timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### `strict`
##### `rejectReadOnly`
```
Type: bool
@ -274,20 +279,50 @@ Valid Values: true, false
Default: false
```
`strict=true` enables a driver-side strict mode in which MySQL warnings are treated as errors. This mode should not be used in production as it may lead to data corruption in certain situations.
A server-side strict mode, which is safe for production use, can be set via the [`sql_mode`](https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html) system variable.
`rejectReadOnly=true` causes the driver to reject read-only connections. This
is for a possible race condition during an automatic failover, where the mysql
client gets connected to a read-only replica after the failover.
Note that this should be a fairly rare case, as an automatic failover normally
happens when the primary is down, and the race condition shouldn't happen
unless it comes back up online as soon as the failover is kicked off. On the
other hand, when this happens, a MySQL application can get stuck on a
read-only connection until restarted. It is however fairly easy to reproduce,
for example, using a manual failover on AWS Aurora's MySQL-compatible cluster.
If you are not relying on read-only transactions to reject writes that aren't
supposed to happen, setting this on some MySQL providers (such as AWS Aurora)
is safer for failovers.
Note that ERROR 1290 can be returned for a `read-only` server and this option will
cause a retry for that error. However the same error number is used for some
other cases. You should ensure your application will never cause an ERROR 1290
except for `read-only` mode when enabling this option.
##### `serverPubKey`
```
Type: string
Valid Values: <name>
Default: none
```
Server public keys can be registered with [`mysql.RegisterServerPubKey`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterServerPubKey), which can then be used by the assigned name in the DSN.
Public keys are used to transmit encrypted data, e.g. for authentication.
If the server's public key is known, it should be set manually to avoid expensive and potentially insecure transmissions of the public key from the server to the client each time it is required.
By default MySQL also treats notes as warnings. Use [`sql_notes=false`](http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_sql_notes) to ignore notes.
##### `timeout`
```
Type: decimal number
Type: duration
Default: OS default
```
*Driver* side connection timeout. The value must be a decimal number with an unit suffix ( *"ms"*, *"s"*, *"m"*, *"h"* ), such as *"30s"*, *"0.5m"* or *"1m30s"*. To set a server side timeout, use the parameter [`wait_timeout`](http://dev.mysql.com/doc/refman/5.6/en/server-system-variables.html#sysvar_wait_timeout).
Timeout for establishing connections, aka dial timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### `tls`
@ -297,16 +332,17 @@ Valid Values: true, false, skip-verify, <name>
Default: false
```
`tls=true` enables TLS / SSL encrypted connection to the server. Use `skip-verify` if you want to use a self-signed or invalid certificate (server side). Use a custom value registered with [`mysql.RegisterTLSConfig`](http://godoc.org/github.com/go-sql-driver/mysql#RegisterTLSConfig).
`tls=true` enables TLS / SSL encrypted connection to the server. Use `skip-verify` if you want to use a self-signed or invalid certificate (server side). Use a custom value registered with [`mysql.RegisterTLSConfig`](https://godoc.org/github.com/go-sql-driver/mysql#RegisterTLSConfig).
##### `writeTimeout`
```
Type: decimal number
Type: duration
Default: 0
```
I/O write timeout. The value must be a decimal number with an unit suffix ( *"ms"*, *"s"*, *"m"*, *"h"* ), such as *"30s"*, *"0.5m"* or *"1m30s"*.
I/O write timeout. The value must be a decimal number with a unit suffix (*"ms"*, *"s"*, *"m"*, *"h"*), such as *"30s"*, *"0.5m"* or *"1m30s"*.
##### System Variables
@ -317,9 +353,9 @@ Any other parameters are interpreted as system variables:
* `<string_var>=%27<value>%27`: `SET <string_var>='<value>'`
Rules:
* The values for string variables must be quoted with '
* The values for string variables must be quoted with `'`.
* The values must also be [url.QueryEscape](http://golang.org/pkg/net/url/#QueryEscape)'ed!
(which implies values of string variables must be wrapped with `%27`)
(which implies values of string variables must be wrapped with `%27`).
Examples:
* `autocommit=1`: `SET autocommit=1`
@ -380,6 +416,18 @@ No Database preselected:
user:password@/
```
### Connection pool and timeouts
The connection pool is managed by Go's database/sql package. For details on how to configure the size of the pool and how long connections stay in the pool see `*DB.SetMaxOpenConns`, `*DB.SetMaxIdleConns`, and `*DB.SetConnMaxLifetime` in the [database/sql documentation](https://golang.org/pkg/database/sql/). The read, write, and dial timeouts for each individual connection are configured with the DSN parameters [`readTimeout`](#readtimeout), [`writeTimeout`](#writetimeout), and [`timeout`](#timeout), respectively.
## `ColumnType` Support
This driver supports the [`ColumnType` interface](https://golang.org/pkg/database/sql/#ColumnType) introduced in Go 1.8, with the exception of [`ColumnType.Length()`](https://golang.org/pkg/database/sql/#ColumnType.Length), which is currently not supported.
## `context.Context` Support
Go 1.8 added `database/sql` support for `context.Context`. This driver supports query timeouts and cancellation via contexts.
See [context support in the database/sql package](https://golang.org/doc/go1.8#database_sql) for more details.
### `LOAD DATA LOCAL INFILE` support
For this feature you need direct access to the package. Therefore you must change the import path (no `_`):
```go
@ -390,17 +438,17 @@ Files must be whitelisted by registering them with `mysql.RegisterLocalFile(file
To use a `io.Reader` a handler function must be registered with `mysql.RegisterReaderHandler(name, handler)` which returns a `io.Reader` or `io.ReadCloser`. The Reader is available with the filepath `Reader::<name>` then. Choose different names for different handlers and `DeregisterReaderHandler` when you don't need it anymore.
See the [godoc of Go-MySQL-Driver](http://godoc.org/github.com/go-sql-driver/mysql "golang mysql driver documentation") for details.
See the [godoc of Go-MySQL-Driver](https://godoc.org/github.com/go-sql-driver/mysql "golang mysql driver documentation") for details.
### `time.Time` support
The default internal output type of MySQL `DATE` and `DATETIME` values is `[]byte` which allows you to scan the value into a `[]byte`, `string` or `sql.RawBytes` variable in your programm.
The default internal output type of MySQL `DATE` and `DATETIME` values is `[]byte` which allows you to scan the value into a `[]byte`, `string` or `sql.RawBytes` variable in your program.
However, many want to scan MySQL `DATE` and `DATETIME` values into `time.Time` variables, which is the logical opposite in Go to `DATE` and `DATETIME` in MySQL. You can do that by changing the internal output type from `[]byte` to `time.Time` with the DSN parameter `parseTime=true`. You can set the default [`time.Time` location](http://golang.org/pkg/time/#Location) with the `loc` DSN parameter.
However, many want to scan MySQL `DATE` and `DATETIME` values into `time.Time` variables, which is the logical opposite in Go to `DATE` and `DATETIME` in MySQL. You can do that by changing the internal output type from `[]byte` to `time.Time` with the DSN parameter `parseTime=true`. You can set the default [`time.Time` location](https://golang.org/pkg/time/#Location) with the `loc` DSN parameter.
**Caution:** As of Go 1.1, this makes `time.Time` the only variable type you can scan `DATE` and `DATETIME` values into. This breaks for example [`sql.RawBytes` support](https://github.com/go-sql-driver/mysql/wiki/Examples#rawbytes).
Alternatively you can use the [`NullTime`](http://godoc.org/github.com/go-sql-driver/mysql#NullTime) type as the scan destination, which works with both `time.Time` and `string` / `[]byte`.
Alternatively you can use the [`NullTime`](https://godoc.org/github.com/go-sql-driver/mysql#NullTime) type as the scan destination, which works with both `time.Time` and `string` / `[]byte`.
### Unicode support
@ -412,7 +460,6 @@ Version 1.0 of the driver recommended adding `&charset=utf8` (alias for `SET NAM
See http://dev.mysql.com/doc/refman/5.7/en/charset-unicode.html for more details on MySQL's Unicode support.
## Testing / Development
To run the driver tests you may need to adjust the configuration. See the [Testing Wiki-Page](https://github.com/go-sql-driver/mysql/wiki/Testing "Testing") for details.
@ -431,13 +478,13 @@ Mozilla summarizes the license scope as follows:
That means:
* You can **use** the **unchanged** source code both in private and commercially
* When distributing, you **must publish** the source code of any **changed files** licensed under the MPL 2.0 under a) the MPL 2.0 itself or b) a compatible license (e.g. GPL 3.0 or Apache License 2.0)
* You **needn't publish** the source code of your library as long as the files licensed under the MPL 2.0 are **unchanged**
* You can **use** the **unchanged** source code both in private and commercially.
* When distributing, you **must publish** the source code of any **changed files** licensed under the MPL 2.0 under a) the MPL 2.0 itself or b) a compatible license (e.g. GPL 3.0 or Apache License 2.0).
* You **needn't publish** the source code of your library as long as the files licensed under the MPL 2.0 are **unchanged**.
Please read the [MPL 2.0 FAQ](http://www.mozilla.org/MPL/2.0/FAQ.html) if you have further questions regarding the license.
Please read the [MPL 2.0 FAQ](https://www.mozilla.org/en-US/MPL/2.0/FAQ/) if you have further questions regarding the license.
You can read the full terms here: [LICENSE](https://raw.github.com/go-sql-driver/mysql/master/LICENSE)
You can read the full terms here: [LICENSE](https://raw.github.com/go-sql-driver/mysql/master/LICENSE).
![Go Gopher and MySQL Dolphin](https://raw.github.com/wiki/go-sql-driver/mysql/go-mysql-driver_m.jpg "Golang Gopher transporting the MySQL Dolphin in a wheelbarrow")

2
vendor/github.com/go-sql-driver/mysql/appengine.go generated vendored
View file

@ -11,7 +11,7 @@
package mysql
import (
"appengine/cloudsql"
"google.golang.org/appengine/cloudsql"
)
func init() {

420
vendor/github.com/go-sql-driver/mysql/auth.go generated vendored Normal file
View file

@ -0,0 +1,420 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2018 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
package mysql
import (
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/sha256"
"crypto/x509"
"encoding/pem"
"sync"
)
// server pub keys registry
var (
serverPubKeyLock sync.RWMutex
serverPubKeyRegistry map[string]*rsa.PublicKey
)
// RegisterServerPubKey registers a server RSA public key which can be used to
// send data in a secure manner to the server without receiving the public key
// in a potentially insecure way from the server first.
// Registered keys can afterwards be used adding serverPubKey=<name> to the DSN.
//
// Note: The provided rsa.PublicKey instance is exclusively owned by the driver
// after registering it and may not be modified.
//
// data, err := ioutil.ReadFile("mykey.pem")
// if err != nil {
// log.Fatal(err)
// }
//
// block, _ := pem.Decode(data)
// if block == nil || block.Type != "PUBLIC KEY" {
// log.Fatal("failed to decode PEM block containing public key")
// }
//
// pub, err := x509.ParsePKIXPublicKey(block.Bytes)
// if err != nil {
// log.Fatal(err)
// }
//
// if rsaPubKey, ok := pub.(*rsa.PublicKey); ok {
// mysql.RegisterServerPubKey("mykey", rsaPubKey)
// } else {
// log.Fatal("not a RSA public key")
// }
//
func RegisterServerPubKey(name string, pubKey *rsa.PublicKey) {
serverPubKeyLock.Lock()
if serverPubKeyRegistry == nil {
serverPubKeyRegistry = make(map[string]*rsa.PublicKey)
}
serverPubKeyRegistry[name] = pubKey
serverPubKeyLock.Unlock()
}
// DeregisterServerPubKey removes the public key registered with the given name.
func DeregisterServerPubKey(name string) {
serverPubKeyLock.Lock()
if serverPubKeyRegistry != nil {
delete(serverPubKeyRegistry, name)
}
serverPubKeyLock.Unlock()
}
func getServerPubKey(name string) (pubKey *rsa.PublicKey) {
serverPubKeyLock.RLock()
if v, ok := serverPubKeyRegistry[name]; ok {
pubKey = v
}
serverPubKeyLock.RUnlock()
return
}
// Hash password using pre 4.1 (old password) method
// https://github.com/atcurtis/mariadb/blob/master/mysys/my_rnd.c
type myRnd struct {
seed1, seed2 uint32
}
const myRndMaxVal = 0x3FFFFFFF
// Pseudo random number generator
func newMyRnd(seed1, seed2 uint32) *myRnd {
return &myRnd{
seed1: seed1 % myRndMaxVal,
seed2: seed2 % myRndMaxVal,
}
}
// Tested to be equivalent to MariaDB's floating point variant
// http://play.golang.org/p/QHvhd4qved
// http://play.golang.org/p/RG0q4ElWDx
func (r *myRnd) NextByte() byte {
r.seed1 = (r.seed1*3 + r.seed2) % myRndMaxVal
r.seed2 = (r.seed1 + r.seed2 + 33) % myRndMaxVal
return byte(uint64(r.seed1) * 31 / myRndMaxVal)
}
// Generate binary hash from byte string using insecure pre 4.1 method
func pwHash(password []byte) (result [2]uint32) {
var add uint32 = 7
var tmp uint32
result[0] = 1345345333
result[1] = 0x12345671
for _, c := range password {
// skip spaces and tabs in password
if c == ' ' || c == '\t' {
continue
}
tmp = uint32(c)
result[0] ^= (((result[0] & 63) + add) * tmp) + (result[0] << 8)
result[1] += (result[1] << 8) ^ result[0]
add += tmp
}
// Remove sign bit (1<<31)-1)
result[0] &= 0x7FFFFFFF
result[1] &= 0x7FFFFFFF
return
}
// Hash password using insecure pre 4.1 method
func scrambleOldPassword(scramble []byte, password string) []byte {
if len(password) == 0 {
return nil
}
scramble = scramble[:8]
hashPw := pwHash([]byte(password))
hashSc := pwHash(scramble)
r := newMyRnd(hashPw[0]^hashSc[0], hashPw[1]^hashSc[1])
var out [8]byte
for i := range out {
out[i] = r.NextByte() + 64
}
mask := r.NextByte()
for i := range out {
out[i] ^= mask
}
return out[:]
}
// Hash password using 4.1+ method (SHA1)
func scramblePassword(scramble []byte, password string) []byte {
if len(password) == 0 {
return nil
}
// stage1Hash = SHA1(password)
crypt := sha1.New()
crypt.Write([]byte(password))
stage1 := crypt.Sum(nil)
// scrambleHash = SHA1(scramble + SHA1(stage1Hash))
// inner Hash
crypt.Reset()
crypt.Write(stage1)
hash := crypt.Sum(nil)
// outer Hash
crypt.Reset()
crypt.Write(scramble)
crypt.Write(hash)
scramble = crypt.Sum(nil)
// token = scrambleHash XOR stage1Hash
for i := range scramble {
scramble[i] ^= stage1[i]
}
return scramble
}
// Hash password using MySQL 8+ method (SHA256)
func scrambleSHA256Password(scramble []byte, password string) []byte {
if len(password) == 0 {
return nil
}
// XOR(SHA256(password), SHA256(SHA256(SHA256(password)), scramble))
crypt := sha256.New()
crypt.Write([]byte(password))
message1 := crypt.Sum(nil)
crypt.Reset()
crypt.Write(message1)
message1Hash := crypt.Sum(nil)
crypt.Reset()
crypt.Write(message1Hash)
crypt.Write(scramble)
message2 := crypt.Sum(nil)
for i := range message1 {
message1[i] ^= message2[i]
}
return message1
}
func encryptPassword(password string, seed []byte, pub *rsa.PublicKey) ([]byte, error) {
plain := make([]byte, len(password)+1)
copy(plain, password)
for i := range plain {
j := i % len(seed)
plain[i] ^= seed[j]
}
sha1 := sha1.New()
return rsa.EncryptOAEP(sha1, rand.Reader, pub, plain, nil)
}
func (mc *mysqlConn) sendEncryptedPassword(seed []byte, pub *rsa.PublicKey) error {
enc, err := encryptPassword(mc.cfg.Passwd, seed, pub)
if err != nil {
return err
}
return mc.writeAuthSwitchPacket(enc, false)
}
func (mc *mysqlConn) auth(authData []byte, plugin string) ([]byte, bool, error) {
switch plugin {
case "caching_sha2_password":
authResp := scrambleSHA256Password(authData, mc.cfg.Passwd)
return authResp, (authResp == nil), nil
case "mysql_old_password":
if !mc.cfg.AllowOldPasswords {
return nil, false, ErrOldPassword
}
// Note: there are edge cases where this should work but doesn't;
// this is currently "wontfix":
// https://github.com/go-sql-driver/mysql/issues/184
authResp := scrambleOldPassword(authData[:8], mc.cfg.Passwd)
return authResp, true, nil
case "mysql_clear_password":
if !mc.cfg.AllowCleartextPasswords {
return nil, false, ErrCleartextPassword
}
// http://dev.mysql.com/doc/refman/5.7/en/cleartext-authentication-plugin.html
// http://dev.mysql.com/doc/refman/5.7/en/pam-authentication-plugin.html
return []byte(mc.cfg.Passwd), true, nil
case "mysql_native_password":
if !mc.cfg.AllowNativePasswords {
return nil, false, ErrNativePassword
}
// https://dev.mysql.com/doc/internals/en/secure-password-authentication.html
// Native password authentication only need and will need 20-byte challenge.
authResp := scramblePassword(authData[:20], mc.cfg.Passwd)
return authResp, false, nil
case "sha256_password":
if len(mc.cfg.Passwd) == 0 {
return nil, true, nil
}
if mc.cfg.tls != nil || mc.cfg.Net == "unix" {
// write cleartext auth packet
return []byte(mc.cfg.Passwd), true, nil
}
pubKey := mc.cfg.pubKey
if pubKey == nil {
// request public key from server
return []byte{1}, false, nil
}
// encrypted password
enc, err := encryptPassword(mc.cfg.Passwd, authData, pubKey)
return enc, false, err
default:
errLog.Print("unknown auth plugin:", plugin)
return nil, false, ErrUnknownPlugin
}
}
func (mc *mysqlConn) handleAuthResult(oldAuthData []byte, plugin string) error {
// Read Result Packet
authData, newPlugin, err := mc.readAuthResult()
if err != nil {
return err
}
// handle auth plugin switch, if requested
if newPlugin != "" {
// If CLIENT_PLUGIN_AUTH capability is not supported, no new cipher is
// sent and we have to keep using the cipher sent in the init packet.
if authData == nil {
authData = oldAuthData
} else {
// copy data from read buffer to owned slice
copy(oldAuthData, authData)
}
plugin = newPlugin
authResp, addNUL, err := mc.auth(authData, plugin)
if err != nil {
return err
}
if err = mc.writeAuthSwitchPacket(authResp, addNUL); err != nil {
return err
}
// Read Result Packet
authData, newPlugin, err = mc.readAuthResult()
if err != nil {
return err
}
// Do not allow to change the auth plugin more than once
if newPlugin != "" {
return ErrMalformPkt
}
}
switch plugin {
// https://insidemysql.com/preparing-your-community-connector-for-mysql-8-part-2-sha256/
case "caching_sha2_password":
switch len(authData) {
case 0:
return nil // auth successful
case 1:
switch authData[0] {
case cachingSha2PasswordFastAuthSuccess:
if err = mc.readResultOK(); err == nil {
return nil // auth successful
}
case cachingSha2PasswordPerformFullAuthentication:
if mc.cfg.tls != nil || mc.cfg.Net == "unix" {
// write cleartext auth packet
err = mc.writeAuthSwitchPacket([]byte(mc.cfg.Passwd), true)
if err != nil {
return err
}
} else {
pubKey := mc.cfg.pubKey
if pubKey == nil {
// request public key from server
data := mc.buf.takeSmallBuffer(4 + 1)
data[4] = cachingSha2PasswordRequestPublicKey
mc.writePacket(data)
// parse public key
data, err := mc.readPacket()
if err != nil {
return err
}
block, _ := pem.Decode(data[1:])
pkix, err := x509.ParsePKIXPublicKey(block.Bytes)
if err != nil {
return err
}
pubKey = pkix.(*rsa.PublicKey)
}
// send encrypted password
err = mc.sendEncryptedPassword(oldAuthData, pubKey)
if err != nil {
return err
}
}
return mc.readResultOK()
default:
return ErrMalformPkt
}
default:
return ErrMalformPkt
}
case "sha256_password":
switch len(authData) {
case 0:
return nil // auth successful
default:
block, _ := pem.Decode(authData)
pub, err := x509.ParsePKIXPublicKey(block.Bytes)
if err != nil {
return err
}
// send encrypted password
err = mc.sendEncryptedPassword(oldAuthData, pub.(*rsa.PublicKey))
if err != nil {
return err
}
return mc.readResultOK()
}
default:
return nil // auth successful
}
return err
}

12
vendor/github.com/go-sql-driver/mysql/buffer.go generated vendored
View file

@ -130,18 +130,18 @@ func (b *buffer) takeBuffer(length int) []byte {
// smaller than defaultBufSize
// Only one buffer (total) can be used at a time.
func (b *buffer) takeSmallBuffer(length int) []byte {
if b.length == 0 {
return b.buf[:length]
if b.length > 0 {
return nil
}
return nil
return b.buf[:length]
}
// takeCompleteBuffer returns the complete existing buffer.
// This can be used if the necessary buffer size is unknown.
// Only one buffer (total) can be used at a time.
func (b *buffer) takeCompleteBuffer() []byte {
if b.length == 0 {
return b.buf
if b.length > 0 {
return nil
}
return nil
return b.buf
}

1
vendor/github.com/go-sql-driver/mysql/collations.go generated vendored
View file

@ -9,6 +9,7 @@
package mysql
const defaultCollation = "utf8_general_ci"
const binaryCollation = "binary"
// A list of available collations mapped to the internal ID.
// To update this map use the following MySQL query:

152
vendor/github.com/go-sql-driver/mysql/connection.go generated vendored
View file

@ -10,12 +10,23 @@ package mysql
import (
"database/sql/driver"
"io"
"net"
"strconv"
"strings"
"time"
)
// a copy of context.Context for Go 1.7 and earlier
type mysqlContext interface {
Done() <-chan struct{}
Err() error
// defined in context.Context, but not used in this driver:
// Deadline() (deadline time.Time, ok bool)
// Value(key interface{}) interface{}
}
type mysqlConn struct {
buf buffer
netConn net.Conn
@ -29,7 +40,14 @@ type mysqlConn struct {
status statusFlag
sequence uint8
parseTime bool
strict bool
// for context support (Go 1.8+)
watching bool
watcher chan<- mysqlContext
closech chan struct{}
finished chan<- struct{}
canceled atomicError // set non-nil if conn is canceled
closed atomicBool // set when conn is closed, before closech is closed
}
// Handles parameters set in DSN after the connection is established
@ -62,22 +80,41 @@ func (mc *mysqlConn) handleParams() (err error) {
return
}
func (mc *mysqlConn) markBadConn(err error) error {
if mc == nil {
return err
}
if err != errBadConnNoWrite {
return err
}
return driver.ErrBadConn
}
func (mc *mysqlConn) Begin() (driver.Tx, error) {
if mc.netConn == nil {
return mc.begin(false)
}
func (mc *mysqlConn) begin(readOnly bool) (driver.Tx, error) {
if mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return nil, driver.ErrBadConn
}
err := mc.exec("START TRANSACTION")
var q string
if readOnly {
q = "START TRANSACTION READ ONLY"
} else {
q = "START TRANSACTION"
}
err := mc.exec(q)
if err == nil {
return &mysqlTx{mc}, err
}
return nil, err
return nil, mc.markBadConn(err)
}
func (mc *mysqlConn) Close() (err error) {
// Makes Close idempotent
if mc.netConn != nil {
if !mc.closed.IsSet() {
err = mc.writeCommandPacket(comQuit)
}
@ -91,26 +128,39 @@ func (mc *mysqlConn) Close() (err error) {
// is called before auth or on auth failure because MySQL will have already
// closed the network connection.
func (mc *mysqlConn) cleanup() {
// Makes cleanup idempotent
if mc.netConn != nil {
if err := mc.netConn.Close(); err != nil {
errLog.Print(err)
}
mc.netConn = nil
if !mc.closed.TrySet(true) {
return
}
mc.cfg = nil
mc.buf.nc = nil
// Makes cleanup idempotent
close(mc.closech)
if mc.netConn == nil {
return
}
if err := mc.netConn.Close(); err != nil {
errLog.Print(err)
}
}
func (mc *mysqlConn) error() error {
if mc.closed.IsSet() {
if err := mc.canceled.Value(); err != nil {
return err
}
return ErrInvalidConn
}
return nil
}
func (mc *mysqlConn) Prepare(query string) (driver.Stmt, error) {
if mc.netConn == nil {
if mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return nil, driver.ErrBadConn
}
// Send command
err := mc.writeCommandPacketStr(comStmtPrepare, query)
if err != nil {
return nil, err
return nil, mc.markBadConn(err)
}
stmt := &mysqlStmt{
@ -144,7 +194,7 @@ func (mc *mysqlConn) interpolateParams(query string, args []driver.Value) (strin
if buf == nil {
// can not take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return "", driver.ErrBadConn
return "", ErrInvalidConn
}
buf = buf[:0]
argPos := 0
@ -257,7 +307,7 @@ func (mc *mysqlConn) interpolateParams(query string, args []driver.Value) (strin
}
func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, error) {
if mc.netConn == nil {
if mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return nil, driver.ErrBadConn
}
@ -271,7 +321,6 @@ func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, err
return nil, err
}
query = prepared
args = nil
}
mc.affectedRows = 0
mc.insertId = 0
@ -283,32 +332,43 @@ func (mc *mysqlConn) Exec(query string, args []driver.Value) (driver.Result, err
insertId: int64(mc.insertId),
}, err
}
return nil, err
return nil, mc.markBadConn(err)
}
// Internal function to execute commands
func (mc *mysqlConn) exec(query string) error {
// Send command
err := mc.writeCommandPacketStr(comQuery, query)
if err != nil {
return err
if err := mc.writeCommandPacketStr(comQuery, query); err != nil {
return mc.markBadConn(err)
}
// Read Result
resLen, err := mc.readResultSetHeaderPacket()
if err == nil && resLen > 0 {
if err = mc.readUntilEOF(); err != nil {
if err != nil {
return err
}
if resLen > 0 {
// columns
if err := mc.readUntilEOF(); err != nil {
return err
}
err = mc.readUntilEOF()
// rows
if err := mc.readUntilEOF(); err != nil {
return err
}
}
return err
return mc.discardResults()
}
func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, error) {
if mc.netConn == nil {
return mc.query(query, args)
}
func (mc *mysqlConn) query(query string, args []driver.Value) (*textRows, error) {
if mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return nil, driver.ErrBadConn
}
@ -322,7 +382,6 @@ func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, erro
return nil, err
}
query = prepared
args = nil
}
// Send command
err := mc.writeCommandPacketStr(comQuery, query)
@ -335,15 +394,22 @@ func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, erro
rows.mc = mc
if resLen == 0 {
// no columns, no more data
return emptyRows{}, nil
rows.rs.done = true
switch err := rows.NextResultSet(); err {
case nil, io.EOF:
return rows, nil
default:
return nil, err
}
}
// Columns
rows.columns, err = mc.readColumns(resLen)
rows.rs.columns, err = mc.readColumns(resLen)
return rows, err
}
}
return nil, err
return nil, mc.markBadConn(err)
}
// Gets the value of the given MySQL System Variable
@ -359,7 +425,7 @@ func (mc *mysqlConn) getSystemVar(name string) ([]byte, error) {
if err == nil {
rows := new(textRows)
rows.mc = mc
rows.columns = []mysqlField{{fieldType: fieldTypeVarChar}}
rows.rs.columns = []mysqlField{{fieldType: fieldTypeVarChar}}
if resLen > 0 {
// Columns
@ -375,3 +441,21 @@ func (mc *mysqlConn) getSystemVar(name string) ([]byte, error) {
}
return nil, err
}
// finish is called when the query has canceled.
func (mc *mysqlConn) cancel(err error) {
mc.canceled.Set(err)
mc.cleanup()
}
// finish is called when the query has succeeded.
func (mc *mysqlConn) finish() {
if !mc.watching || mc.finished == nil {
return
}
select {
case mc.finished <- struct{}{}:
mc.watching = false
case <-mc.closech:
}
}

208
vendor/github.com/go-sql-driver/mysql/connection_go18.go generated vendored Normal file
View file

@ -0,0 +1,208 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
// +build go1.8
package mysql
import (
"context"
"database/sql"
"database/sql/driver"
)
// Ping implements driver.Pinger interface
func (mc *mysqlConn) Ping(ctx context.Context) (err error) {
if mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return driver.ErrBadConn
}
if err = mc.watchCancel(ctx); err != nil {
return
}
defer mc.finish()
if err = mc.writeCommandPacket(comPing); err != nil {
return
}
return mc.readResultOK()
}
// BeginTx implements driver.ConnBeginTx interface
func (mc *mysqlConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
if err := mc.watchCancel(ctx); err != nil {
return nil, err
}
defer mc.finish()
if sql.IsolationLevel(opts.Isolation) != sql.LevelDefault {
level, err := mapIsolationLevel(opts.Isolation)
if err != nil {
return nil, err
}
err = mc.exec("SET TRANSACTION ISOLATION LEVEL " + level)
if err != nil {
return nil, err
}
}
return mc.begin(opts.ReadOnly)
}
func (mc *mysqlConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
dargs, err := namedValueToValue(args)
if err != nil {
return nil, err
}
if err := mc.watchCancel(ctx); err != nil {
return nil, err
}
rows, err := mc.query(query, dargs)
if err != nil {
mc.finish()
return nil, err
}
rows.finish = mc.finish
return rows, err
}
func (mc *mysqlConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
dargs, err := namedValueToValue(args)
if err != nil {
return nil, err
}
if err := mc.watchCancel(ctx); err != nil {
return nil, err
}
defer mc.finish()
return mc.Exec(query, dargs)
}
func (mc *mysqlConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
if err := mc.watchCancel(ctx); err != nil {
return nil, err
}
stmt, err := mc.Prepare(query)
mc.finish()
if err != nil {
return nil, err
}
select {
default:
case <-ctx.Done():
stmt.Close()
return nil, ctx.Err()
}
return stmt, nil
}
func (stmt *mysqlStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
dargs, err := namedValueToValue(args)
if err != nil {
return nil, err
}
if err := stmt.mc.watchCancel(ctx); err != nil {
return nil, err
}
rows, err := stmt.query(dargs)
if err != nil {
stmt.mc.finish()
return nil, err
}
rows.finish = stmt.mc.finish
return rows, err
}
func (stmt *mysqlStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
dargs, err := namedValueToValue(args)
if err != nil {
return nil, err
}
if err := stmt.mc.watchCancel(ctx); err != nil {
return nil, err
}
defer stmt.mc.finish()
return stmt.Exec(dargs)
}
func (mc *mysqlConn) watchCancel(ctx context.Context) error {
if mc.watching {
// Reach here if canceled,
// so the connection is already invalid
mc.cleanup()
return nil
}
if ctx.Done() == nil {
return nil
}
mc.watching = true
select {
default:
case <-ctx.Done():
return ctx.Err()
}
if mc.watcher == nil {
return nil
}
mc.watcher <- ctx
return nil
}
func (mc *mysqlConn) startWatcher() {
watcher := make(chan mysqlContext, 1)
mc.watcher = watcher
finished := make(chan struct{})
mc.finished = finished
go func() {
for {
var ctx mysqlContext
select {
case ctx = <-watcher:
case <-mc.closech:
return
}
select {
case <-ctx.Done():
mc.cancel(ctx.Err())
case <-finished:
case <-mc.closech:
return
}
}
}()
}
func (mc *mysqlConn) CheckNamedValue(nv *driver.NamedValue) (err error) {
nv.Value, err = converter{}.ConvertValue(nv.Value)
return
}
// ResetSession implements driver.SessionResetter.
// (From Go 1.10)
func (mc *mysqlConn) ResetSession(ctx context.Context) error {
if mc.closed.IsSet() {
return driver.ErrBadConn
}
return nil
}

25
vendor/github.com/go-sql-driver/mysql/const.go generated vendored
View file

@ -9,7 +9,9 @@
package mysql
const (
minProtocolVersion byte = 10
defaultAuthPlugin = "mysql_native_password"
defaultMaxAllowedPacket = 4 << 20 // 4 MiB
minProtocolVersion = 10
maxPacketSize = 1<<24 - 1
timeFormat = "2006-01-02 15:04:05.999999"
)
@ -18,10 +20,11 @@ const (
// http://dev.mysql.com/doc/internals/en/client-server-protocol.html
const (
iOK byte = 0x00
iLocalInFile byte = 0xfb
iEOF byte = 0xfe
iERR byte = 0xff
iOK byte = 0x00
iAuthMoreData byte = 0x01
iLocalInFile byte = 0xfb
iEOF byte = 0xfe
iERR byte = 0xff
)
// https://dev.mysql.com/doc/internals/en/capability-flags.html#packet-Protocol::CapabilityFlags
@ -87,8 +90,10 @@ const (
)
// https://dev.mysql.com/doc/internals/en/com-query-response.html#packet-Protocol::ColumnType
type fieldType byte
const (
fieldTypeDecimal byte = iota
fieldTypeDecimal fieldType = iota
fieldTypeTiny
fieldTypeShort
fieldTypeLong
@ -107,7 +112,7 @@ const (
fieldTypeBit
)
const (
fieldTypeJSON byte = iota + 0xf5
fieldTypeJSON fieldType = iota + 0xf5
fieldTypeNewDecimal
fieldTypeEnum
fieldTypeSet
@ -161,3 +166,9 @@ const (
statusInTransReadonly
statusSessionStateChanged
)
const (
cachingSha2PasswordRequestPublicKey = 2
cachingSha2PasswordFastAuthSuccess = 3
cachingSha2PasswordPerformFullAuthentication = 4
)

88
vendor/github.com/go-sql-driver/mysql/driver.go generated vendored
View file

@ -4,7 +4,7 @@
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
// Package mysql provides a MySQL driver for Go's database/sql package
// Package mysql provides a MySQL driver for Go's database/sql package.
//
// The driver should be used via the database/sql package:
//
@ -20,8 +20,14 @@ import (
"database/sql"
"database/sql/driver"
"net"
"sync"
)
// watcher interface is used for context support (From Go 1.8)
type watcher interface {
startWatcher()
}
// MySQLDriver is exported to make the driver directly accessible.
// In general the driver is used via the database/sql package.
type MySQLDriver struct{}
@ -30,12 +36,17 @@ type MySQLDriver struct{}
// Custom dial functions must be registered with RegisterDial
type DialFunc func(addr string) (net.Conn, error)
var dials map[string]DialFunc
var (
dialsLock sync.RWMutex
dials map[string]DialFunc
)
// RegisterDial registers a custom dial function. It can then be used by the
// network address mynet(addr), where mynet is the registered new network.
// addr is passed as a parameter to the dial function.
func RegisterDial(net string, dial DialFunc) {
dialsLock.Lock()
defer dialsLock.Unlock()
if dials == nil {
dials = make(map[string]DialFunc)
}
@ -52,16 +63,19 @@ func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
mc := &mysqlConn{
maxAllowedPacket: maxPacketSize,
maxWriteSize: maxPacketSize - 1,
closech: make(chan struct{}),
}
mc.cfg, err = ParseDSN(dsn)
if err != nil {
return nil, err
}
mc.parseTime = mc.cfg.ParseTime
mc.strict = mc.cfg.Strict
// Connect to Server
if dial, ok := dials[mc.cfg.Net]; ok {
dialsLock.RLock()
dial, ok := dials[mc.cfg.Net]
dialsLock.RUnlock()
if ok {
mc.netConn, err = dial(mc.cfg.Addr)
} else {
nd := net.Dialer{Timeout: mc.cfg.Timeout}
@ -81,6 +95,11 @@ func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
}
}
// Call startWatcher for context support (From Go 1.8)
if s, ok := interface{}(mc).(watcher); ok {
s.startWatcher()
}
mc.buf = newBuffer(mc.netConn)
// Set I/O timeouts
@ -88,20 +107,31 @@ func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
mc.writeTimeout = mc.cfg.WriteTimeout
// Reading Handshake Initialization Packet
cipher, err := mc.readInitPacket()
authData, plugin, err := mc.readHandshakePacket()
if err != nil {
mc.cleanup()
return nil, err
}
// Send Client Authentication Packet
if err = mc.writeAuthPacket(cipher); err != nil {
authResp, addNUL, err := mc.auth(authData, plugin)
if err != nil {
// try the default auth plugin, if using the requested plugin failed
errLog.Print("could not use requested auth plugin '"+plugin+"': ", err.Error())
plugin = defaultAuthPlugin
authResp, addNUL, err = mc.auth(authData, plugin)
if err != nil {
mc.cleanup()
return nil, err
}
}
if err = mc.writeHandshakeResponsePacket(authResp, addNUL, plugin); err != nil {
mc.cleanup()
return nil, err
}
// Handle response to auth packet, switch methods if possible
if err = handleAuthResult(mc, cipher); err != nil {
if err = mc.handleAuthResult(authData, plugin); err != nil {
// Authentication failed and MySQL has already closed the connection
// (https://dev.mysql.com/doc/internals/en/authentication-fails.html).
// Do not send COM_QUIT, just cleanup and return the error.
@ -134,50 +164,6 @@ func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
return mc, nil
}
func handleAuthResult(mc *mysqlConn, oldCipher []byte) error {
// Read Result Packet
cipher, err := mc.readResultOK()
if err == nil {
return nil // auth successful
}
if mc.cfg == nil {
return err // auth failed and retry not possible
}
// Retry auth if configured to do so.
if mc.cfg.AllowOldPasswords && err == ErrOldPassword {
// Retry with old authentication method. Note: there are edge cases
// where this should work but doesn't; this is currently "wontfix":
// https://github.com/go-sql-driver/mysql/issues/184
// If CLIENT_PLUGIN_AUTH capability is not supported, no new cipher is
// sent and we have to keep using the cipher sent in the init packet.
if cipher == nil {
cipher = oldCipher
}
if err = mc.writeOldAuthPacket(cipher); err != nil {
return err
}
_, err = mc.readResultOK()
} else if mc.cfg.AllowCleartextPasswords && err == ErrCleartextPassword {
// Retry with clear text password for
// http://dev.mysql.com/doc/refman/5.7/en/cleartext-authentication-plugin.html
// http://dev.mysql.com/doc/refman/5.7/en/pam-authentication-plugin.html
if err = mc.writeClearAuthPacket(); err != nil {
return err
}
_, err = mc.readResultOK()
} else if mc.cfg.AllowNativePasswords && err == ErrNativePassword {
if err = mc.writeNativeAuthPacket(cipher); err != nil {
return err
}
_, err = mc.readResultOK()
}
return err
}
func init() {
sql.Register("mysql", &MySQLDriver{})
}

159
vendor/github.com/go-sql-driver/mysql/dsn.go generated vendored
View file

@ -10,11 +10,13 @@ package mysql
import (
"bytes"
"crypto/rsa"
"crypto/tls"
"errors"
"fmt"
"net"
"net/url"
"sort"
"strconv"
"strings"
"time"
@ -27,7 +29,9 @@ var (
errInvalidDSNUnsafeCollation = errors.New("invalid DSN: interpolateParams can not be used with unsafe collations")
)
// Config is a configuration parsed from a DSN string
// Config is a configuration parsed from a DSN string.
// If a new Config is created instead of being parsed from a DSN string,
// the NewConfig function should be used, which sets default values.
type Config struct {
User string // Username
Passwd string // Password (requires User)
@ -38,6 +42,8 @@ type Config struct {
Collation string // Connection collation
Loc *time.Location // Location for time.Time values
MaxAllowedPacket int // Max packet size allowed
ServerPubKey string // Server public key name
pubKey *rsa.PublicKey // Server public key
TLSConfig string // TLS configuration name
tls *tls.Config // TLS configuration
Timeout time.Duration // Dial timeout
@ -53,7 +59,54 @@ type Config struct {
InterpolateParams bool // Interpolate placeholders into query string
MultiStatements bool // Allow multiple statements in one query
ParseTime bool // Parse time values to time.Time
Strict bool // Return warnings as errors
RejectReadOnly bool // Reject read-only connections
}
// NewConfig creates a new Config and sets default values.
func NewConfig() *Config {
return &Config{
Collation: defaultCollation,
Loc: time.UTC,
MaxAllowedPacket: defaultMaxAllowedPacket,
AllowNativePasswords: true,
}
}
func (cfg *Config) normalize() error {
if cfg.InterpolateParams && unsafeCollations[cfg.Collation] {
return errInvalidDSNUnsafeCollation
}
// Set default network if empty
if cfg.Net == "" {
cfg.Net = "tcp"
}
// Set default address if empty
if cfg.Addr == "" {
switch cfg.Net {
case "tcp":
cfg.Addr = "127.0.0.1:3306"
case "unix":
cfg.Addr = "/tmp/mysql.sock"
default:
return errors.New("default addr for network '" + cfg.Net + "' unknown")
}
} else if cfg.Net == "tcp" {
cfg.Addr = ensureHavePort(cfg.Addr)
}
if cfg.tls != nil {
if cfg.tls.ServerName == "" && !cfg.tls.InsecureSkipVerify {
host, _, err := net.SplitHostPort(cfg.Addr)
if err == nil {
cfg.tls.ServerName = host
}
}
}
return nil
}
// FormatDSN formats the given Config into a DSN string which can be passed to
@ -102,12 +155,12 @@ func (cfg *Config) FormatDSN() string {
}
}
if cfg.AllowNativePasswords {
if !cfg.AllowNativePasswords {
if hasParam {
buf.WriteString("&allowNativePasswords=true")
buf.WriteString("&allowNativePasswords=false")
} else {
hasParam = true
buf.WriteString("?allowNativePasswords=true")
buf.WriteString("?allowNativePasswords=false")
}
}
@ -195,15 +248,25 @@ func (cfg *Config) FormatDSN() string {
buf.WriteString(cfg.ReadTimeout.String())
}
if cfg.Strict {
if cfg.RejectReadOnly {
if hasParam {
buf.WriteString("&strict=true")
buf.WriteString("&rejectReadOnly=true")
} else {
hasParam = true
buf.WriteString("?strict=true")
buf.WriteString("?rejectReadOnly=true")
}
}
if len(cfg.ServerPubKey) > 0 {
if hasParam {
buf.WriteString("&serverPubKey=")
} else {
hasParam = true
buf.WriteString("?serverPubKey=")
}
buf.WriteString(url.QueryEscape(cfg.ServerPubKey))
}
if cfg.Timeout > 0 {
if hasParam {
buf.WriteString("&timeout=")
@ -234,7 +297,7 @@ func (cfg *Config) FormatDSN() string {
buf.WriteString(cfg.WriteTimeout.String())
}
if cfg.MaxAllowedPacket > 0 {
if cfg.MaxAllowedPacket != defaultMaxAllowedPacket {
if hasParam {
buf.WriteString("&maxAllowedPacket=")
} else {
@ -247,7 +310,12 @@ func (cfg *Config) FormatDSN() string {
// other params
if cfg.Params != nil {
for param, value := range cfg.Params {
var params []string
for param := range cfg.Params {
params = append(params, param)
}
sort.Strings(params)
for _, param := range params {
if hasParam {
buf.WriteByte('&')
} else {
@ -257,7 +325,7 @@ func (cfg *Config) FormatDSN() string {
buf.WriteString(param)
buf.WriteByte('=')
buf.WriteString(url.QueryEscape(value))
buf.WriteString(url.QueryEscape(cfg.Params[param]))
}
}
@ -267,10 +335,7 @@ func (cfg *Config) FormatDSN() string {
// ParseDSN parses the DSN string to a Config
func ParseDSN(dsn string) (cfg *Config, err error) {
// New config with some default values
cfg = &Config{
Loc: time.UTC,
Collation: defaultCollation,
}
cfg = NewConfig()
// [user[:password]@][net[(addr)]]/dbname[?param1=value1&paramN=valueN]
// Find the last '/' (since the password or the net addr might contain a '/')
@ -338,28 +403,9 @@ func ParseDSN(dsn string) (cfg *Config, err error) {
return nil, errInvalidDSNNoSlash
}
if cfg.InterpolateParams && unsafeCollations[cfg.Collation] {
return nil, errInvalidDSNUnsafeCollation
if err = cfg.normalize(); err != nil {
return nil, err
}
// Set default network if empty
if cfg.Net == "" {
cfg.Net = "tcp"
}
// Set default address if empty
if cfg.Addr == "" {
switch cfg.Net {
case "tcp":
cfg.Addr = "127.0.0.1:3306"
case "unix":
cfg.Addr = "/tmp/mysql.sock"
default:
return nil, errors.New("default addr for network '" + cfg.Net + "' unknown")
}
}
return
}
@ -374,7 +420,6 @@ func parseDSNParams(cfg *Config, params string) (err error) {
// cfg params
switch value := param[1]; param[0] {
// Disable INFILE whitelist / enable all files
case "allowAllFiles":
var isBool bool
@ -472,14 +517,32 @@ func parseDSNParams(cfg *Config, params string) (err error) {
return
}
// Strict mode
case "strict":
// Reject read-only connections
case "rejectReadOnly":
var isBool bool
cfg.Strict, isBool = readBool(value)
cfg.RejectReadOnly, isBool = readBool(value)
if !isBool {
return errors.New("invalid bool value: " + value)
}
// Server public key
case "serverPubKey":
name, err := url.QueryUnescape(value)
if err != nil {
return fmt.Errorf("invalid value for server pub key name: %v", err)
}
if pubKey := getServerPubKey(name); pubKey != nil {
cfg.ServerPubKey = name
cfg.pubKey = pubKey
} else {
return errors.New("invalid value / unknown server pub key name: " + name)
}
// Strict mode
case "strict":
panic("strict mode has been removed. See https://github.com/go-sql-driver/mysql/wiki/strict-mode")
// Dial Timeout
case "timeout":
cfg.Timeout, err = time.ParseDuration(value)
@ -506,14 +569,7 @@ func parseDSNParams(cfg *Config, params string) (err error) {
return fmt.Errorf("invalid value for TLS config name: %v", err)
}
if tlsConfig, ok := tlsConfigRegister[name]; ok {
if len(tlsConfig.ServerName) == 0 && !tlsConfig.InsecureSkipVerify {
host, _, err := net.SplitHostPort(cfg.Addr)
if err == nil {
tlsConfig.ServerName = host
}
}
if tlsConfig := getTLSConfigClone(name); tlsConfig != nil {
cfg.TLSConfig = name
cfg.tls = tlsConfig
} else {
@ -546,3 +602,10 @@ func parseDSNParams(cfg *Config, params string) (err error) {
return
}
func ensureHavePort(addr string) string {
if _, _, err := net.SplitHostPort(addr); err != nil {
return net.JoinHostPort(addr, "3306")
}
return addr
}

79
vendor/github.com/go-sql-driver/mysql/errors.go generated vendored
View file

@ -9,10 +9,8 @@
package mysql
import (
"database/sql/driver"
"errors"
"fmt"
"io"
"log"
"os"
)
@ -31,6 +29,12 @@ var (
ErrPktSyncMul = errors.New("commands out of sync. Did you run multiple statements at once?")
ErrPktTooLarge = errors.New("packet for query is too large. Try adjusting the 'max_allowed_packet' variable on the server")
ErrBusyBuffer = errors.New("busy buffer")
// errBadConnNoWrite is used for connection errors where nothing was sent to the database yet.
// If this happens first in a function starting a database interaction, it should be replaced by driver.ErrBadConn
// to trigger a resend.
// See https://github.com/go-sql-driver/mysql/pull/302
errBadConnNoWrite = errors.New("bad connection")
)
var errLog = Logger(log.New(os.Stderr, "[mysql] ", log.Ldate|log.Ltime|log.Lshortfile))
@ -59,74 +63,3 @@ type MySQLError struct {
func (me *MySQLError) Error() string {
return fmt.Sprintf("Error %d: %s", me.Number, me.Message)
}
// MySQLWarnings is an error type which represents a group of one or more MySQL
// warnings
type MySQLWarnings []MySQLWarning
func (mws MySQLWarnings) Error() string {
var msg string
for i, warning := range mws {
if i > 0 {
msg += "\r\n"
}
msg += fmt.Sprintf(
"%s %s: %s",
warning.Level,
warning.Code,
warning.Message,
)
}
return msg
}
// MySQLWarning is an error type which represents a single MySQL warning.
// Warnings are returned in groups only. See MySQLWarnings
type MySQLWarning struct {
Level string
Code string
Message string
}
func (mc *mysqlConn) getWarnings() (err error) {
rows, err := mc.Query("SHOW WARNINGS", nil)
if err != nil {
return
}
var warnings = MySQLWarnings{}
var values = make([]driver.Value, 3)
for {
err = rows.Next(values)
switch err {
case nil:
warning := MySQLWarning{}
if raw, ok := values[0].([]byte); ok {
warning.Level = string(raw)
} else {
warning.Level = fmt.Sprintf("%s", values[0])
}
if raw, ok := values[1].([]byte); ok {
warning.Code = string(raw)
} else {
warning.Code = fmt.Sprintf("%s", values[1])
}
if raw, ok := values[2].([]byte); ok {
warning.Message = string(raw)
} else {
warning.Message = fmt.Sprintf("%s", values[0])
}
warnings = append(warnings, warning)
case io.EOF:
return warnings
default:
rows.Close()
return
}
}
}

194
vendor/github.com/go-sql-driver/mysql/fields.go generated vendored Normal file
View file

@ -0,0 +1,194 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
package mysql
import (
"database/sql"
"reflect"
)
func (mf *mysqlField) typeDatabaseName() string {
switch mf.fieldType {
case fieldTypeBit:
return "BIT"
case fieldTypeBLOB:
if mf.charSet != collations[binaryCollation] {
return "TEXT"
}
return "BLOB"
case fieldTypeDate:
return "DATE"
case fieldTypeDateTime:
return "DATETIME"
case fieldTypeDecimal:
return "DECIMAL"
case fieldTypeDouble:
return "DOUBLE"
case fieldTypeEnum:
return "ENUM"
case fieldTypeFloat:
return "FLOAT"
case fieldTypeGeometry:
return "GEOMETRY"
case fieldTypeInt24:
return "MEDIUMINT"
case fieldTypeJSON:
return "JSON"
case fieldTypeLong:
return "INT"
case fieldTypeLongBLOB:
if mf.charSet != collations[binaryCollation] {
return "LONGTEXT"
}
return "LONGBLOB"
case fieldTypeLongLong:
return "BIGINT"
case fieldTypeMediumBLOB:
if mf.charSet != collations[binaryCollation] {
return "MEDIUMTEXT"
}
return "MEDIUMBLOB"
case fieldTypeNewDate:
return "DATE"
case fieldTypeNewDecimal:
return "DECIMAL"
case fieldTypeNULL:
return "NULL"
case fieldTypeSet:
return "SET"
case fieldTypeShort:
return "SMALLINT"
case fieldTypeString:
if mf.charSet == collations[binaryCollation] {
return "BINARY"
}
return "CHAR"
case fieldTypeTime:
return "TIME"
case fieldTypeTimestamp:
return "TIMESTAMP"
case fieldTypeTiny:
return "TINYINT"
case fieldTypeTinyBLOB:
if mf.charSet != collations[binaryCollation] {
return "TINYTEXT"
}
return "TINYBLOB"
case fieldTypeVarChar:
if mf.charSet == collations[binaryCollation] {
return "VARBINARY"
}
return "VARCHAR"
case fieldTypeVarString:
if mf.charSet == collations[binaryCollation] {
return "VARBINARY"
}
return "VARCHAR"
case fieldTypeYear:
return "YEAR"
default:
return ""
}
}
var (
scanTypeFloat32 = reflect.TypeOf(float32(0))
scanTypeFloat64 = reflect.TypeOf(float64(0))
scanTypeInt8 = reflect.TypeOf(int8(0))
scanTypeInt16 = reflect.TypeOf(int16(0))
scanTypeInt32 = reflect.TypeOf(int32(0))
scanTypeInt64 = reflect.TypeOf(int64(0))
scanTypeNullFloat = reflect.TypeOf(sql.NullFloat64{})
scanTypeNullInt = reflect.TypeOf(sql.NullInt64{})
scanTypeNullTime = reflect.TypeOf(NullTime{})
scanTypeUint8 = reflect.TypeOf(uint8(0))
scanTypeUint16 = reflect.TypeOf(uint16(0))
scanTypeUint32 = reflect.TypeOf(uint32(0))
scanTypeUint64 = reflect.TypeOf(uint64(0))
scanTypeRawBytes = reflect.TypeOf(sql.RawBytes{})
scanTypeUnknown = reflect.TypeOf(new(interface{}))
)
type mysqlField struct {
tableName string
name string
length uint32
flags fieldFlag
fieldType fieldType
decimals byte
charSet uint8
}
func (mf *mysqlField) scanType() reflect.Type {
switch mf.fieldType {
case fieldTypeTiny:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint8
}
return scanTypeInt8
}
return scanTypeNullInt
case fieldTypeShort, fieldTypeYear:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint16
}
return scanTypeInt16
}
return scanTypeNullInt
case fieldTypeInt24, fieldTypeLong:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint32
}
return scanTypeInt32
}
return scanTypeNullInt
case fieldTypeLongLong:
if mf.flags&flagNotNULL != 0 {
if mf.flags&flagUnsigned != 0 {
return scanTypeUint64
}
return scanTypeInt64
}
return scanTypeNullInt
case fieldTypeFloat:
if mf.flags&flagNotNULL != 0 {
return scanTypeFloat32
}
return scanTypeNullFloat
case fieldTypeDouble:
if mf.flags&flagNotNULL != 0 {
return scanTypeFloat64
}
return scanTypeNullFloat
case fieldTypeDecimal, fieldTypeNewDecimal, fieldTypeVarChar,
fieldTypeBit, fieldTypeEnum, fieldTypeSet, fieldTypeTinyBLOB,
fieldTypeMediumBLOB, fieldTypeLongBLOB, fieldTypeBLOB,
fieldTypeVarString, fieldTypeString, fieldTypeGeometry, fieldTypeJSON,
fieldTypeTime:
return scanTypeRawBytes
case fieldTypeDate, fieldTypeNewDate,
fieldTypeTimestamp, fieldTypeDateTime:
// NullTime is always returned for more consistent behavior as it can
// handle both cases of parseTime regardless if the field is nullable.
return scanTypeNullTime
default:
return scanTypeUnknown
}
}

6
vendor/github.com/go-sql-driver/mysql/infile.go generated vendored
View file

@ -147,7 +147,8 @@ func (mc *mysqlConn) handleInFileRequest(name string) (err error) {
}
// send content packets
if err == nil {
// if packetSize == 0, the Reader contains no data
if err == nil && packetSize > 0 {
data := make([]byte, 4+packetSize)
var n int
for err == nil {
@ -173,8 +174,7 @@ func (mc *mysqlConn) handleInFileRequest(name string) (err error) {
// read OK packet
if err == nil {
_, err = mc.readResultOK()
return err
return mc.readResultOK()
}
mc.readPacket()

410
vendor/github.com/go-sql-driver/mysql/packets.go generated vendored
View file

@ -30,9 +30,12 @@ func (mc *mysqlConn) readPacket() ([]byte, error) {
// read packet header
data, err := mc.buf.readNext(4)
if err != nil {
if cerr := mc.canceled.Value(); cerr != nil {
return nil, cerr
}
errLog.Print(err)
mc.Close()
return nil, driver.ErrBadConn
return nil, ErrInvalidConn
}
// packet length [24 bit]
@ -54,7 +57,7 @@ func (mc *mysqlConn) readPacket() ([]byte, error) {
if prevData == nil {
errLog.Print(ErrMalformPkt)
mc.Close()
return nil, driver.ErrBadConn
return nil, ErrInvalidConn
}
return prevData, nil
@ -63,9 +66,12 @@ func (mc *mysqlConn) readPacket() ([]byte, error) {
// read packet body [pktLen bytes]
data, err = mc.buf.readNext(pktLen)
if err != nil {
if cerr := mc.canceled.Value(); cerr != nil {
return nil, cerr
}
errLog.Print(err)
mc.Close()
return nil, driver.ErrBadConn
return nil, ErrInvalidConn
}
// return data if this was the last packet
@ -125,33 +131,47 @@ func (mc *mysqlConn) writePacket(data []byte) error {
// Handle error
if err == nil { // n != len(data)
mc.cleanup()
errLog.Print(ErrMalformPkt)
} else {
if cerr := mc.canceled.Value(); cerr != nil {
return cerr
}
if n == 0 && pktLen == len(data)-4 {
// only for the first loop iteration when nothing was written yet
return errBadConnNoWrite
}
mc.cleanup()
errLog.Print(err)
}
return driver.ErrBadConn
return ErrInvalidConn
}
}
/******************************************************************************
* Initialisation Process *
* Initialization Process *
******************************************************************************/
// Handshake Initialization Packet
// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::Handshake
func (mc *mysqlConn) readInitPacket() ([]byte, error) {
func (mc *mysqlConn) readHandshakePacket() ([]byte, string, error) {
data, err := mc.readPacket()
if err != nil {
return nil, err
// for init we can rewrite this to ErrBadConn for sql.Driver to retry, since
// in connection initialization we don't risk retrying non-idempotent actions.
if err == ErrInvalidConn {
return nil, "", driver.ErrBadConn
}
return nil, "", err
}
if data[0] == iERR {
return nil, mc.handleErrorPacket(data)
return nil, "", mc.handleErrorPacket(data)
}
// protocol version [1 byte]
if data[0] < minProtocolVersion {
return nil, fmt.Errorf(
return nil, "", fmt.Errorf(
"unsupported protocol version %d. Version %d or higher is required",
data[0],
minProtocolVersion,
@ -163,7 +183,7 @@ func (mc *mysqlConn) readInitPacket() ([]byte, error) {
pos := 1 + bytes.IndexByte(data[1:], 0x00) + 1 + 4
// first part of the password cipher [8 bytes]
cipher := data[pos : pos+8]
authData := data[pos : pos+8]
// (filler) always 0x00 [1 byte]
pos += 8 + 1
@ -171,13 +191,14 @@ func (mc *mysqlConn) readInitPacket() ([]byte, error) {
// capability flags (lower 2 bytes) [2 bytes]
mc.flags = clientFlag(binary.LittleEndian.Uint16(data[pos : pos+2]))
if mc.flags&clientProtocol41 == 0 {
return nil, ErrOldProtocol
return nil, "", ErrOldProtocol
}
if mc.flags&clientSSL == 0 && mc.cfg.tls != nil {
return nil, ErrNoTLS
return nil, "", ErrNoTLS
}
pos += 2
plugin := ""
if len(data) > pos {
// character set [1 byte]
// status flags [2 bytes]
@ -198,32 +219,34 @@ func (mc *mysqlConn) readInitPacket() ([]byte, error) {
//
// The official Python library uses the fixed length 12
// which seems to work but technically could have a hidden bug.
cipher = append(cipher, data[pos:pos+12]...)
authData = append(authData, data[pos:pos+12]...)
pos += 13
// TODO: Verify string termination
// EOF if version (>= 5.5.7 and < 5.5.10) or (>= 5.6.0 and < 5.6.2)
// \NUL otherwise
//
//if data[len(data)-1] == 0 {
// return
//}
//return ErrMalformPkt
if end := bytes.IndexByte(data[pos:], 0x00); end != -1 {
plugin = string(data[pos : pos+end])
} else {
plugin = string(data[pos:])
}
// make a memory safe copy of the cipher slice
var b [20]byte
copy(b[:], cipher)
return b[:], nil
copy(b[:], authData)
return b[:], plugin, nil
}
plugin = defaultAuthPlugin
// make a memory safe copy of the cipher slice
var b [8]byte
copy(b[:], cipher)
return b[:], nil
copy(b[:], authData)
return b[:], plugin, nil
}
// Client Authentication Packet
// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::HandshakeResponse
func (mc *mysqlConn) writeAuthPacket(cipher []byte) error {
func (mc *mysqlConn) writeHandshakeResponsePacket(authResp []byte, addNUL bool, plugin string) error {
// Adjust client flags based on server support
clientFlags := clientProtocol41 |
clientSecureConn |
@ -247,10 +270,19 @@ func (mc *mysqlConn) writeAuthPacket(cipher []byte) error {
clientFlags |= clientMultiStatements
}
// User Password
scrambleBuff := scramblePassword(cipher, []byte(mc.cfg.Passwd))
// encode length of the auth plugin data
var authRespLEIBuf [9]byte
authRespLEI := appendLengthEncodedInteger(authRespLEIBuf[:0], uint64(len(authResp)))
if len(authRespLEI) > 1 {
// if the length can not be written in 1 byte, it must be written as a
// length encoded integer
clientFlags |= clientPluginAuthLenEncClientData
}
pktLen := 4 + 4 + 1 + 23 + len(mc.cfg.User) + 1 + 1 + len(scrambleBuff) + 21 + 1
pktLen := 4 + 4 + 1 + 23 + len(mc.cfg.User) + 1 + len(authRespLEI) + len(authResp) + 21 + 1
if addNUL {
pktLen++
}
// To specify a db name
if n := len(mc.cfg.DBName); n > 0 {
@ -261,9 +293,9 @@ func (mc *mysqlConn) writeAuthPacket(cipher []byte) error {
// Calculate packet length and get buffer with that size
data := mc.buf.takeSmallBuffer(pktLen + 4)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
// cannot take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
return errBadConnNoWrite
}
// ClientFlags [32 bit]
@ -318,9 +350,13 @@ func (mc *mysqlConn) writeAuthPacket(cipher []byte) error {
data[pos] = 0x00
pos++
// ScrambleBuffer [length encoded integer]
data[pos] = byte(len(scrambleBuff))
pos += 1 + copy(data[pos+1:], scrambleBuff)
// Auth Data [length encoded integer]
pos += copy(data[pos:], authRespLEI)
pos += copy(data[pos:], authResp)
if addNUL {
data[pos] = 0x00
pos++
}
// Databasename [null terminated string]
if len(mc.cfg.DBName) > 0 {
@ -329,72 +365,32 @@ func (mc *mysqlConn) writeAuthPacket(cipher []byte) error {
pos++
}
// Assume native client during response
pos += copy(data[pos:], "mysql_native_password")
pos += copy(data[pos:], plugin)
data[pos] = 0x00
// Send Auth packet
return mc.writePacket(data)
}
// Client old authentication packet
// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchResponse
func (mc *mysqlConn) writeOldAuthPacket(cipher []byte) error {
// User password
scrambleBuff := scrambleOldPassword(cipher, []byte(mc.cfg.Passwd))
// Calculate the packet length and add a tailing 0
pktLen := len(scrambleBuff) + 1
data := mc.buf.takeSmallBuffer(4 + pktLen)
func (mc *mysqlConn) writeAuthSwitchPacket(authData []byte, addNUL bool) error {
pktLen := 4 + len(authData)
if addNUL {
pktLen++
}
data := mc.buf.takeSmallBuffer(pktLen)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
// cannot take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
return errBadConnNoWrite
}
// Add the scrambled password [null terminated string]
copy(data[4:], scrambleBuff)
data[4+pktLen-1] = 0x00
return mc.writePacket(data)
}
// Client clear text authentication packet
// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchResponse
func (mc *mysqlConn) writeClearAuthPacket() error {
// Calculate the packet length and add a tailing 0
pktLen := len(mc.cfg.Passwd) + 1
data := mc.buf.takeSmallBuffer(4 + pktLen)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
// Add the auth data [EOF]
copy(data[4:], authData)
if addNUL {
data[pktLen-1] = 0x00
}
// Add the clear password [null terminated string]
copy(data[4:], mc.cfg.Passwd)
data[4+pktLen-1] = 0x00
return mc.writePacket(data)
}
// Native password authentication method
// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchResponse
func (mc *mysqlConn) writeNativeAuthPacket(cipher []byte) error {
scrambleBuff := scramblePassword(cipher, []byte(mc.cfg.Passwd))
// Calculate the packet length and add a tailing 0
pktLen := len(scrambleBuff)
data := mc.buf.takeSmallBuffer(4 + pktLen)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
}
// Add the scramble
copy(data[4:], scrambleBuff)
return mc.writePacket(data)
}
@ -408,9 +404,9 @@ func (mc *mysqlConn) writeCommandPacket(command byte) error {
data := mc.buf.takeSmallBuffer(4 + 1)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
// cannot take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
return errBadConnNoWrite
}
// Add command byte
@ -427,9 +423,9 @@ func (mc *mysqlConn) writeCommandPacketStr(command byte, arg string) error {
pktLen := 1 + len(arg)
data := mc.buf.takeBuffer(pktLen + 4)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
// cannot take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
return errBadConnNoWrite
}
// Add command byte
@ -448,9 +444,9 @@ func (mc *mysqlConn) writeCommandPacketUint32(command byte, arg uint32) error {
data := mc.buf.takeSmallBuffer(4 + 1 + 4)
if data == nil {
// can not take the buffer. Something must be wrong with the connection
// cannot take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
return errBadConnNoWrite
}
// Add command byte
@ -470,44 +466,50 @@ func (mc *mysqlConn) writeCommandPacketUint32(command byte, arg uint32) error {
* Result Packets *
******************************************************************************/
// Returns error if Packet is not an 'Result OK'-Packet
func (mc *mysqlConn) readResultOK() ([]byte, error) {
func (mc *mysqlConn) readAuthResult() ([]byte, string, error) {
data, err := mc.readPacket()
if err == nil {
// packet indicator
switch data[0] {
case iOK:
return nil, mc.handleOkPacket(data)
case iEOF:
if len(data) > 1 {
pluginEndIndex := bytes.IndexByte(data, 0x00)
plugin := string(data[1:pluginEndIndex])
cipher := data[pluginEndIndex+1 : len(data)-1]
if plugin == "mysql_old_password" {
// using old_passwords
return cipher, ErrOldPassword
} else if plugin == "mysql_clear_password" {
// using clear text password
return cipher, ErrCleartextPassword
} else if plugin == "mysql_native_password" {
// using mysql default authentication method
return cipher, ErrNativePassword
} else {
return cipher, ErrUnknownPlugin
}
} else {
// https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::OldAuthSwitchRequest
return nil, ErrOldPassword
}
default: // Error otherwise
return nil, mc.handleErrorPacket(data)
}
if err != nil {
return nil, "", err
}
return nil, err
// packet indicator
switch data[0] {
case iOK:
return nil, "", mc.handleOkPacket(data)
case iAuthMoreData:
return data[1:], "", err
case iEOF:
if len(data) < 1 {
// https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::OldAuthSwitchRequest
return nil, "mysql_old_password", nil
}
pluginEndIndex := bytes.IndexByte(data, 0x00)
if pluginEndIndex < 0 {
return nil, "", ErrMalformPkt
}
plugin := string(data[1:pluginEndIndex])
authData := data[pluginEndIndex+1:]
return authData, plugin, nil
default: // Error otherwise
return nil, "", mc.handleErrorPacket(data)
}
}
// Returns error if Packet is not an 'Result OK'-Packet
func (mc *mysqlConn) readResultOK() error {
data, err := mc.readPacket()
if err != nil {
return err
}
if data[0] == iOK {
return mc.handleOkPacket(data)
}
return mc.handleErrorPacket(data)
}
// Result Set Header Packet
@ -550,6 +552,22 @@ func (mc *mysqlConn) handleErrorPacket(data []byte) error {
// Error Number [16 bit uint]
errno := binary.LittleEndian.Uint16(data[1:3])
// 1792: ER_CANT_EXECUTE_IN_READ_ONLY_TRANSACTION
// 1290: ER_OPTION_PREVENTS_STATEMENT (returned by Aurora during failover)
if (errno == 1792 || errno == 1290) && mc.cfg.RejectReadOnly {
// Oops; we are connected to a read-only connection, and won't be able
// to issue any write statements. Since RejectReadOnly is configured,
// we throw away this connection hoping this one would have write
// permission. This is specifically for a possible race condition
// during failover (e.g. on AWS Aurora). See README.md for more.
//
// We explicitly close the connection before returning
// driver.ErrBadConn to ensure that `database/sql` purges this
// connection and initiates a new one for next statement next time.
mc.Close()
return driver.ErrBadConn
}
pos := 3
// SQL State [optional: # + 5bytes string]
@ -584,19 +602,12 @@ func (mc *mysqlConn) handleOkPacket(data []byte) error {
// server_status [2 bytes]
mc.status = readStatus(data[1+n+m : 1+n+m+2])
if err := mc.discardResults(); err != nil {
return err
}
// warning count [2 bytes]
if !mc.strict {
if mc.status&statusMoreResultsExists != 0 {
return nil
}
pos := 1 + n + m + 2
if binary.LittleEndian.Uint16(data[pos:pos+2]) > 0 {
return mc.getWarnings()
}
// warning count [2 bytes]
return nil
}
@ -668,14 +679,21 @@ func (mc *mysqlConn) readColumns(count int) ([]mysqlField, error) {
if err != nil {
return nil, err
}
pos += n
// Filler [uint8]
pos++
// Charset [charset, collation uint8]
columns[i].charSet = data[pos]
pos += 2
// Length [uint32]
pos += n + 1 + 2 + 4
columns[i].length = binary.LittleEndian.Uint32(data[pos : pos+4])
pos += 4
// Field type [uint8]
columns[i].fieldType = data[pos]
columns[i].fieldType = fieldType(data[pos])
pos++
// Flags [uint16]
@ -698,6 +716,10 @@ func (mc *mysqlConn) readColumns(count int) ([]mysqlField, error) {
func (rows *textRows) readRow(dest []driver.Value) error {
mc := rows.mc
if rows.rs.done {
return io.EOF
}
data, err := mc.readPacket()
if err != nil {
return err
@ -707,15 +729,11 @@ func (rows *textRows) readRow(dest []driver.Value) error {
if data[0] == iEOF && len(data) == 5 {
// server_status [2 bytes]
rows.mc.status = readStatus(data[3:])
err = rows.mc.discardResults()
if err == nil {
err = io.EOF
} else {
// connection unusable
rows.mc.Close()
rows.rs.done = true
if !rows.HasNextResultSet() {
rows.mc = nil
}
rows.mc = nil
return err
return io.EOF
}
if data[0] == iERR {
rows.mc = nil
@ -736,7 +754,7 @@ func (rows *textRows) readRow(dest []driver.Value) error {
if !mc.parseTime {
continue
} else {
switch rows.columns[i].fieldType {
switch rows.rs.columns[i].fieldType {
case fieldTypeTimestamp, fieldTypeDateTime,
fieldTypeDate, fieldTypeNewDate:
dest[i], err = parseDateTime(
@ -808,14 +826,7 @@ func (stmt *mysqlStmt) readPrepareResultPacket() (uint16, error) {
// Reserved [8 bit]
// Warning count [16 bit uint]
if !stmt.mc.strict {
return columnCount, nil
}
// Check for warnings count > 0, only available in MySQL > 4.1
if len(data) >= 12 && binary.LittleEndian.Uint16(data[10:12]) > 0 {
return columnCount, stmt.mc.getWarnings()
}
return columnCount, nil
}
return 0, err
@ -832,7 +843,7 @@ func (stmt *mysqlStmt) writeCommandLongData(paramID int, arg []byte) error {
// 2 bytes paramID
const dataOffset = 1 + 4 + 2
// Can not use the write buffer since
// Cannot use the write buffer since
// a) the buffer is too small
// b) it is in use
data := make([]byte, 4+1+4+2+len(arg))
@ -887,6 +898,12 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
const minPktLen = 4 + 1 + 4 + 1 + 4
mc := stmt.mc
// Determine threshould dynamically to avoid packet size shortage.
longDataSize := mc.maxAllowedPacket / (stmt.paramCount + 1)
if longDataSize < 64 {
longDataSize = 64
}
// Reset packet-sequence
mc.sequence = 0
@ -898,9 +915,9 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
data = mc.buf.takeCompleteBuffer()
}
if data == nil {
// can not take the buffer. Something must be wrong with the connection
// cannot take the buffer. Something must be wrong with the connection
errLog.Print(ErrBusyBuffer)
return driver.ErrBadConn
return errBadConnNoWrite
}
// command [1 byte]
@ -959,7 +976,7 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
// build NULL-bitmap
if arg == nil {
nullMask[i/8] |= 1 << (uint(i) & 7)
paramTypes[i+i] = fieldTypeNULL
paramTypes[i+i] = byte(fieldTypeNULL)
paramTypes[i+i+1] = 0x00
continue
}
@ -967,7 +984,7 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
// cache types and values
switch v := arg.(type) {
case int64:
paramTypes[i+i] = fieldTypeLongLong
paramTypes[i+i] = byte(fieldTypeLongLong)
paramTypes[i+i+1] = 0x00
if cap(paramValues)-len(paramValues)-8 >= 0 {
@ -983,7 +1000,7 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
}
case float64:
paramTypes[i+i] = fieldTypeDouble
paramTypes[i+i] = byte(fieldTypeDouble)
paramTypes[i+i+1] = 0x00
if cap(paramValues)-len(paramValues)-8 >= 0 {
@ -999,7 +1016,7 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
}
case bool:
paramTypes[i+i] = fieldTypeTiny
paramTypes[i+i] = byte(fieldTypeTiny)
paramTypes[i+i+1] = 0x00
if v {
@ -1011,10 +1028,10 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
case []byte:
// Common case (non-nil value) first
if v != nil {
paramTypes[i+i] = fieldTypeString
paramTypes[i+i] = byte(fieldTypeString)
paramTypes[i+i+1] = 0x00
if len(v) < mc.maxAllowedPacket-pos-len(paramValues)-(len(args)-(i+1))*64 {
if len(v) < longDataSize {
paramValues = appendLengthEncodedInteger(paramValues,
uint64(len(v)),
)
@ -1029,14 +1046,14 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
// Handle []byte(nil) as a NULL value
nullMask[i/8] |= 1 << (uint(i) & 7)
paramTypes[i+i] = fieldTypeNULL
paramTypes[i+i] = byte(fieldTypeNULL)
paramTypes[i+i+1] = 0x00
case string:
paramTypes[i+i] = fieldTypeString
paramTypes[i+i] = byte(fieldTypeString)
paramTypes[i+i+1] = 0x00
if len(v) < mc.maxAllowedPacket-pos-len(paramValues)-(len(args)-(i+1))*64 {
if len(v) < longDataSize {
paramValues = appendLengthEncodedInteger(paramValues,
uint64(len(v)),
)
@ -1048,23 +1065,25 @@ func (stmt *mysqlStmt) writeExecutePacket(args []driver.Value) error {
}
case time.Time:
paramTypes[i+i] = fieldTypeString
paramTypes[i+i] = byte(fieldTypeString)
paramTypes[i+i+1] = 0x00
var val []byte
var a [64]byte
var b = a[:0]
if v.IsZero() {
val = []byte("0000-00-00")
b = append(b, "0000-00-00"...)
} else {
val = []byte(v.In(mc.cfg.Loc).Format(timeFormat))
b = v.In(mc.cfg.Loc).AppendFormat(b, timeFormat)
}
paramValues = appendLengthEncodedInteger(paramValues,
uint64(len(val)),
uint64(len(b)),
)
paramValues = append(paramValues, val...)
paramValues = append(paramValues, b...)
default:
return fmt.Errorf("can not convert type: %T", arg)
return fmt.Errorf("cannot convert type: %T", arg)
}
}
@ -1097,8 +1116,6 @@ func (mc *mysqlConn) discardResults() error {
if err := mc.readUntilEOF(); err != nil {
return err
}
} else {
mc.status &^= statusMoreResultsExists
}
}
return nil
@ -1116,20 +1133,17 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
// EOF Packet
if data[0] == iEOF && len(data) == 5 {
rows.mc.status = readStatus(data[3:])
err = rows.mc.discardResults()
if err == nil {
err = io.EOF
} else {
// connection unusable
rows.mc.Close()
rows.rs.done = true
if !rows.HasNextResultSet() {
rows.mc = nil
}
rows.mc = nil
return err
return io.EOF
}
mc := rows.mc
rows.mc = nil
// Error otherwise
return rows.mc.handleErrorPacket(data)
return mc.handleErrorPacket(data)
}
// NULL-bitmap, [(column-count + 7 + 2) / 8 bytes]
@ -1145,14 +1159,14 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
}
// Convert to byte-coded string
switch rows.columns[i].fieldType {
switch rows.rs.columns[i].fieldType {
case fieldTypeNULL:
dest[i] = nil
continue
// Numeric Types
case fieldTypeTiny:
if rows.columns[i].flags&flagUnsigned != 0 {
if rows.rs.columns[i].flags&flagUnsigned != 0 {
dest[i] = int64(data[pos])
} else {
dest[i] = int64(int8(data[pos]))
@ -1161,7 +1175,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
continue
case fieldTypeShort, fieldTypeYear:
if rows.columns[i].flags&flagUnsigned != 0 {
if rows.rs.columns[i].flags&flagUnsigned != 0 {
dest[i] = int64(binary.LittleEndian.Uint16(data[pos : pos+2]))
} else {
dest[i] = int64(int16(binary.LittleEndian.Uint16(data[pos : pos+2])))
@ -1170,7 +1184,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
continue
case fieldTypeInt24, fieldTypeLong:
if rows.columns[i].flags&flagUnsigned != 0 {
if rows.rs.columns[i].flags&flagUnsigned != 0 {
dest[i] = int64(binary.LittleEndian.Uint32(data[pos : pos+4]))
} else {
dest[i] = int64(int32(binary.LittleEndian.Uint32(data[pos : pos+4])))
@ -1179,7 +1193,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
continue
case fieldTypeLongLong:
if rows.columns[i].flags&flagUnsigned != 0 {
if rows.rs.columns[i].flags&flagUnsigned != 0 {
val := binary.LittleEndian.Uint64(data[pos : pos+8])
if val > math.MaxInt64 {
dest[i] = uint64ToString(val)
@ -1193,7 +1207,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
continue
case fieldTypeFloat:
dest[i] = float32(math.Float32frombits(binary.LittleEndian.Uint32(data[pos : pos+4])))
dest[i] = math.Float32frombits(binary.LittleEndian.Uint32(data[pos : pos+4]))
pos += 4
continue
@ -1233,10 +1247,10 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
case isNull:
dest[i] = nil
continue
case rows.columns[i].fieldType == fieldTypeTime:
case rows.rs.columns[i].fieldType == fieldTypeTime:
// database/sql does not support an equivalent to TIME, return a string
var dstlen uint8
switch decimals := rows.columns[i].decimals; decimals {
switch decimals := rows.rs.columns[i].decimals; decimals {
case 0x00, 0x1f:
dstlen = 8
case 1, 2, 3, 4, 5, 6:
@ -1244,7 +1258,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
default:
return fmt.Errorf(
"protocol error, illegal decimals value %d",
rows.columns[i].decimals,
rows.rs.columns[i].decimals,
)
}
dest[i], err = formatBinaryDateTime(data[pos:pos+int(num)], dstlen, true)
@ -1252,10 +1266,10 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
dest[i], err = parseBinaryDateTime(num, data[pos:], rows.mc.cfg.Loc)
default:
var dstlen uint8
if rows.columns[i].fieldType == fieldTypeDate {
if rows.rs.columns[i].fieldType == fieldTypeDate {
dstlen = 10
} else {
switch decimals := rows.columns[i].decimals; decimals {
switch decimals := rows.rs.columns[i].decimals; decimals {
case 0x00, 0x1f:
dstlen = 19
case 1, 2, 3, 4, 5, 6:
@ -1263,7 +1277,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
default:
return fmt.Errorf(
"protocol error, illegal decimals value %d",
rows.columns[i].decimals,
rows.rs.columns[i].decimals,
)
}
}
@ -1279,7 +1293,7 @@ func (rows *binaryRows) readRow(dest []driver.Value) error {
// Please report if this happens!
default:
return fmt.Errorf("unknown field type %d", rows.columns[i].fieldType)
return fmt.Errorf("unknown field type %d", rows.rs.columns[i].fieldType)
}
}

174
vendor/github.com/go-sql-driver/mysql/rows.go generated vendored
View file

@ -11,19 +11,20 @@ package mysql
import (
"database/sql/driver"
"io"
"math"
"reflect"
)
type mysqlField struct {
tableName string
name string
flags fieldFlag
fieldType byte
decimals byte
type resultSet struct {
columns []mysqlField
columnNames []string
done bool
}
type mysqlRows struct {
mc *mysqlConn
columns []mysqlField
mc *mysqlConn
rs resultSet
finish func()
}
type binaryRows struct {
@ -34,37 +35,86 @@ type textRows struct {
mysqlRows
}
type emptyRows struct{}
func (rows *mysqlRows) Columns() []string {
columns := make([]string, len(rows.columns))
if rows.rs.columnNames != nil {
return rows.rs.columnNames
}
columns := make([]string, len(rows.rs.columns))
if rows.mc != nil && rows.mc.cfg.ColumnsWithAlias {
for i := range columns {
if tableName := rows.columns[i].tableName; len(tableName) > 0 {
columns[i] = tableName + "." + rows.columns[i].name
if tableName := rows.rs.columns[i].tableName; len(tableName) > 0 {
columns[i] = tableName + "." + rows.rs.columns[i].name
} else {
columns[i] = rows.columns[i].name
columns[i] = rows.rs.columns[i].name
}
}
} else {
for i := range columns {
columns[i] = rows.columns[i].name
columns[i] = rows.rs.columns[i].name
}
}
rows.rs.columnNames = columns
return columns
}
func (rows *mysqlRows) Close() error {
func (rows *mysqlRows) ColumnTypeDatabaseTypeName(i int) string {
return rows.rs.columns[i].typeDatabaseName()
}
// func (rows *mysqlRows) ColumnTypeLength(i int) (length int64, ok bool) {
// return int64(rows.rs.columns[i].length), true
// }
func (rows *mysqlRows) ColumnTypeNullable(i int) (nullable, ok bool) {
return rows.rs.columns[i].flags&flagNotNULL == 0, true
}
func (rows *mysqlRows) ColumnTypePrecisionScale(i int) (int64, int64, bool) {
column := rows.rs.columns[i]
decimals := int64(column.decimals)
switch column.fieldType {
case fieldTypeDecimal, fieldTypeNewDecimal:
if decimals > 0 {
return int64(column.length) - 2, decimals, true
}
return int64(column.length) - 1, decimals, true
case fieldTypeTimestamp, fieldTypeDateTime, fieldTypeTime:
return decimals, decimals, true
case fieldTypeFloat, fieldTypeDouble:
if decimals == 0x1f {
return math.MaxInt64, math.MaxInt64, true
}
return math.MaxInt64, decimals, true
}
return 0, 0, false
}
func (rows *mysqlRows) ColumnTypeScanType(i int) reflect.Type {
return rows.rs.columns[i].scanType()
}
func (rows *mysqlRows) Close() (err error) {
if f := rows.finish; f != nil {
f()
rows.finish = nil
}
mc := rows.mc
if mc == nil {
return nil
}
if mc.netConn == nil {
return ErrInvalidConn
if err := mc.error(); err != nil {
return err
}
// Remove unread packets from stream
err := mc.readUntilEOF()
if !rows.rs.done {
err = mc.readUntilEOF()
}
if err == nil {
if err = mc.discardResults(); err != nil {
return err
@ -75,10 +125,66 @@ func (rows *mysqlRows) Close() error {
return err
}
func (rows *mysqlRows) HasNextResultSet() (b bool) {
if rows.mc == nil {
return false
}
return rows.mc.status&statusMoreResultsExists != 0
}
func (rows *mysqlRows) nextResultSet() (int, error) {
if rows.mc == nil {
return 0, io.EOF
}
if err := rows.mc.error(); err != nil {
return 0, err
}
// Remove unread packets from stream
if !rows.rs.done {
if err := rows.mc.readUntilEOF(); err != nil {
return 0, err
}
rows.rs.done = true
}
if !rows.HasNextResultSet() {
rows.mc = nil
return 0, io.EOF
}
rows.rs = resultSet{}
return rows.mc.readResultSetHeaderPacket()
}
func (rows *mysqlRows) nextNotEmptyResultSet() (int, error) {
for {
resLen, err := rows.nextResultSet()
if err != nil {
return 0, err
}
if resLen > 0 {
return resLen, nil
}
rows.rs.done = true
}
}
func (rows *binaryRows) NextResultSet() error {
resLen, err := rows.nextNotEmptyResultSet()
if err != nil {
return err
}
rows.rs.columns, err = rows.mc.readColumns(resLen)
return err
}
func (rows *binaryRows) Next(dest []driver.Value) error {
if mc := rows.mc; mc != nil {
if mc.netConn == nil {
return ErrInvalidConn
if err := mc.error(); err != nil {
return err
}
// Fetch next row from stream
@ -87,10 +193,20 @@ func (rows *binaryRows) Next(dest []driver.Value) error {
return io.EOF
}
func (rows *textRows) NextResultSet() (err error) {
resLen, err := rows.nextNotEmptyResultSet()
if err != nil {
return err
}
rows.rs.columns, err = rows.mc.readColumns(resLen)
return err
}
func (rows *textRows) Next(dest []driver.Value) error {
if mc := rows.mc; mc != nil {
if mc.netConn == nil {
return ErrInvalidConn
if err := mc.error(); err != nil {
return err
}
// Fetch next row from stream
@ -98,15 +214,3 @@ func (rows *textRows) Next(dest []driver.Value) error {
}
return io.EOF
}
func (rows emptyRows) Columns() []string {
return nil
}
func (rows emptyRows) Close() error {
return nil
}
func (rows emptyRows) Next(dest []driver.Value) error {
return io.EOF
}

118
vendor/github.com/go-sql-driver/mysql/statement.go generated vendored
View file

@ -11,6 +11,7 @@ package mysql
import (
"database/sql/driver"
"fmt"
"io"
"reflect"
"strconv"
)
@ -19,11 +20,10 @@ type mysqlStmt struct {
mc *mysqlConn
id uint32
paramCount int
columns []mysqlField // cached from the first query
}
func (stmt *mysqlStmt) Close() error {
if stmt.mc == nil || stmt.mc.netConn == nil {
if stmt.mc == nil || stmt.mc.closed.IsSet() {
// driver.Stmt.Close can be called more than once, thus this function
// has to be idempotent.
// See also Issue #450 and golang/go#16019.
@ -45,14 +45,14 @@ func (stmt *mysqlStmt) ColumnConverter(idx int) driver.ValueConverter {
}
func (stmt *mysqlStmt) Exec(args []driver.Value) (driver.Result, error) {
if stmt.mc.netConn == nil {
if stmt.mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return nil, driver.ErrBadConn
}
// Send command
err := stmt.writeExecutePacket(args)
if err != nil {
return nil, err
return nil, stmt.mc.markBadConn(err)
}
mc := stmt.mc
@ -62,37 +62,45 @@ func (stmt *mysqlStmt) Exec(args []driver.Value) (driver.Result, error) {
// Read Result
resLen, err := mc.readResultSetHeaderPacket()
if err == nil {
if resLen > 0 {
// Columns
err = mc.readUntilEOF()
if err != nil {
return nil, err
}
if err != nil {
return nil, err
}
// Rows
err = mc.readUntilEOF()
if resLen > 0 {
// Columns
if err = mc.readUntilEOF(); err != nil {
return nil, err
}
if err == nil {
return &mysqlResult{
affectedRows: int64(mc.affectedRows),
insertId: int64(mc.insertId),
}, nil
// Rows
if err := mc.readUntilEOF(); err != nil {
return nil, err
}
}
return nil, err
if err := mc.discardResults(); err != nil {
return nil, err
}
return &mysqlResult{
affectedRows: int64(mc.affectedRows),
insertId: int64(mc.insertId),
}, nil
}
func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) {
if stmt.mc.netConn == nil {
return stmt.query(args)
}
func (stmt *mysqlStmt) query(args []driver.Value) (*binaryRows, error) {
if stmt.mc.closed.IsSet() {
errLog.Print(ErrInvalidConn)
return nil, driver.ErrBadConn
}
// Send command
err := stmt.writeExecutePacket(args)
if err != nil {
return nil, err
return nil, stmt.mc.markBadConn(err)
}
mc := stmt.mc
@ -107,14 +115,15 @@ func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) {
if resLen > 0 {
rows.mc = mc
// Columns
// If not cached, read them and cache them
if stmt.columns == nil {
rows.columns, err = mc.readColumns(resLen)
stmt.columns = rows.columns
} else {
rows.columns = stmt.columns
err = mc.readUntilEOF()
rows.rs.columns, err = mc.readColumns(resLen)
} else {
rows.rs.done = true
switch err := rows.NextResultSet(); err {
case nil, io.EOF:
return rows, nil
default:
return nil, err
}
}
@ -123,19 +132,36 @@ func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) {
type converter struct{}
// ConvertValue mirrors the reference/default converter in database/sql/driver
// with _one_ exception. We support uint64 with their high bit and the default
// implementation does not. This function should be kept in sync with
// database/sql/driver defaultConverter.ConvertValue() except for that
// deliberate difference.
func (c converter) ConvertValue(v interface{}) (driver.Value, error) {
if driver.IsValue(v) {
return v, nil
}
if vr, ok := v.(driver.Valuer); ok {
sv, err := callValuerValue(vr)
if err != nil {
return nil, err
}
if !driver.IsValue(sv) {
return nil, fmt.Errorf("non-Value type %T returned from Value", sv)
}
return sv, nil
}
rv := reflect.ValueOf(v)
switch rv.Kind() {
case reflect.Ptr:
// indirect pointers
if rv.IsNil() {
return nil, nil
} else {
return c.ConvertValue(rv.Elem().Interface())
}
return c.ConvertValue(rv.Elem().Interface())
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return rv.Int(), nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32:
@ -148,6 +174,38 @@ func (c converter) ConvertValue(v interface{}) (driver.Value, error) {
return int64(u64), nil
case reflect.Float32, reflect.Float64:
return rv.Float(), nil
case reflect.Bool:
return rv.Bool(), nil
case reflect.Slice:
ek := rv.Type().Elem().Kind()
if ek == reflect.Uint8 {
return rv.Bytes(), nil
}
return nil, fmt.Errorf("unsupported type %T, a slice of %s", v, ek)
case reflect.String:
return rv.String(), nil
}
return nil, fmt.Errorf("unsupported type %T, a %s", v, rv.Kind())
}
var valuerReflectType = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
// callValuerValue returns vr.Value(), with one exception:
// If vr.Value is an auto-generated method on a pointer type and the
// pointer is nil, it would panic at runtime in the panicwrap
// method. Treat it like nil instead.
//
// This is so people can implement driver.Value on value types and
// still use nil pointers to those types to mean nil/NULL, just like
// string/*string.
//
// This is an exact copy of the same-named unexported function from the
// database/sql package.
func callValuerValue(vr driver.Valuer) (v driver.Value, err error) {
if rv := reflect.ValueOf(vr); rv.Kind() == reflect.Ptr &&
rv.IsNil() &&
rv.Type().Elem().Implements(valuerReflectType) {
return nil, nil
}
return vr.Value()
}

4
vendor/github.com/go-sql-driver/mysql/transaction.go generated vendored
View file

@ -13,7 +13,7 @@ type mysqlTx struct {
}
func (tx *mysqlTx) Commit() (err error) {
if tx.mc == nil || tx.mc.netConn == nil {
if tx.mc == nil || tx.mc.closed.IsSet() {
return ErrInvalidConn
}
err = tx.mc.exec("COMMIT")
@ -22,7 +22,7 @@ func (tx *mysqlTx) Commit() (err error) {
}
func (tx *mysqlTx) Rollback() (err error) {
if tx.mc == nil || tx.mc.netConn == nil {
if tx.mc == nil || tx.mc.closed.IsSet() {
return ErrInvalidConn
}
err = tx.mc.exec("ROLLBACK")

214
vendor/github.com/go-sql-driver/mysql/utils.go generated vendored
View file

@ -9,23 +9,29 @@
package mysql
import (
"crypto/sha1"
"crypto/tls"
"database/sql/driver"
"encoding/binary"
"fmt"
"io"
"strings"
"sync"
"sync/atomic"
"time"
)
// Registry for custom tls.Configs
var (
tlsConfigRegister map[string]*tls.Config // Register for custom tls.Configs
tlsConfigLock sync.RWMutex
tlsConfigRegistry map[string]*tls.Config
)
// RegisterTLSConfig registers a custom tls.Config to be used with sql.Open.
// Use the key as a value in the DSN where tls=value.
//
// Note: The provided tls.Config is exclusively owned by the driver after
// registering it.
//
// rootCertPool := x509.NewCertPool()
// pem, err := ioutil.ReadFile("/path/ca-cert.pem")
// if err != nil {
@ -51,19 +57,32 @@ func RegisterTLSConfig(key string, config *tls.Config) error {
return fmt.Errorf("key '%s' is reserved", key)
}
if tlsConfigRegister == nil {
tlsConfigRegister = make(map[string]*tls.Config)
tlsConfigLock.Lock()
if tlsConfigRegistry == nil {
tlsConfigRegistry = make(map[string]*tls.Config)
}
tlsConfigRegister[key] = config
tlsConfigRegistry[key] = config
tlsConfigLock.Unlock()
return nil
}
// DeregisterTLSConfig removes the tls.Config associated with key.
func DeregisterTLSConfig(key string) {
if tlsConfigRegister != nil {
delete(tlsConfigRegister, key)
tlsConfigLock.Lock()
if tlsConfigRegistry != nil {
delete(tlsConfigRegistry, key)
}
tlsConfigLock.Unlock()
}
func getTLSConfigClone(key string) (config *tls.Config) {
tlsConfigLock.RLock()
if v, ok := tlsConfigRegistry[key]; ok {
config = cloneTLSConfig(v)
}
tlsConfigLock.RUnlock()
return
}
// Returns the bool value of the input.
@ -80,119 +99,6 @@ func readBool(input string) (value bool, valid bool) {
return
}
/******************************************************************************
* Authentication *
******************************************************************************/
// Encrypt password using 4.1+ method
func scramblePassword(scramble, password []byte) []byte {
if len(password) == 0 {
return nil
}
// stage1Hash = SHA1(password)
crypt := sha1.New()
crypt.Write(password)
stage1 := crypt.Sum(nil)
// scrambleHash = SHA1(scramble + SHA1(stage1Hash))
// inner Hash
crypt.Reset()
crypt.Write(stage1)
hash := crypt.Sum(nil)
// outer Hash
crypt.Reset()
crypt.Write(scramble)
crypt.Write(hash)
scramble = crypt.Sum(nil)
// token = scrambleHash XOR stage1Hash
for i := range scramble {
scramble[i] ^= stage1[i]
}
return scramble
}
// Encrypt password using pre 4.1 (old password) method
// https://github.com/atcurtis/mariadb/blob/master/mysys/my_rnd.c
type myRnd struct {
seed1, seed2 uint32
}
const myRndMaxVal = 0x3FFFFFFF
// Pseudo random number generator
func newMyRnd(seed1, seed2 uint32) *myRnd {
return &myRnd{
seed1: seed1 % myRndMaxVal,
seed2: seed2 % myRndMaxVal,
}
}
// Tested to be equivalent to MariaDB's floating point variant
// http://play.golang.org/p/QHvhd4qved
// http://play.golang.org/p/RG0q4ElWDx
func (r *myRnd) NextByte() byte {
r.seed1 = (r.seed1*3 + r.seed2) % myRndMaxVal
r.seed2 = (r.seed1 + r.seed2 + 33) % myRndMaxVal
return byte(uint64(r.seed1) * 31 / myRndMaxVal)
}
// Generate binary hash from byte string using insecure pre 4.1 method
func pwHash(password []byte) (result [2]uint32) {
var add uint32 = 7
var tmp uint32
result[0] = 1345345333
result[1] = 0x12345671
for _, c := range password {
// skip spaces and tabs in password
if c == ' ' || c == '\t' {
continue
}
tmp = uint32(c)
result[0] ^= (((result[0] & 63) + add) * tmp) + (result[0] << 8)
result[1] += (result[1] << 8) ^ result[0]
add += tmp
}
// Remove sign bit (1<<31)-1)
result[0] &= 0x7FFFFFFF
result[1] &= 0x7FFFFFFF
return
}
// Encrypt password using insecure pre 4.1 method
func scrambleOldPassword(scramble, password []byte) []byte {
if len(password) == 0 {
return nil
}
scramble = scramble[:8]
hashPw := pwHash(password)
hashSc := pwHash(scramble)
r := newMyRnd(hashPw[0]^hashSc[0], hashPw[1]^hashSc[1])
var out [8]byte
for i := range out {
out[i] = r.NextByte() + 64
}
mask := r.NextByte()
for i := range out {
out[i] ^= mask
}
return out[:]
}
/******************************************************************************
* Time related utils *
******************************************************************************/
@ -519,7 +425,7 @@ func readLengthEncodedString(b []byte) ([]byte, bool, int, error) {
// Check data length
if len(b) >= n {
return b[n-int(num) : n], false, n, nil
return b[n-int(num) : n : n], false, n, nil
}
return nil, false, n, io.EOF
}
@ -548,8 +454,8 @@ func readLengthEncodedInteger(b []byte) (uint64, bool, int) {
if len(b) == 0 {
return 0, true, 1
}
switch b[0] {
switch b[0] {
// 251: NULL
case 0xfb:
return 0, true, 1
@ -738,3 +644,67 @@ func escapeStringQuotes(buf []byte, v string) []byte {
return buf[:pos]
}
/******************************************************************************
* Sync utils *
******************************************************************************/
// noCopy may be embedded into structs which must not be copied
// after the first use.
//
// See https://github.com/golang/go/issues/8005#issuecomment-190753527
// for details.
type noCopy struct{}
// Lock is a no-op used by -copylocks checker from `go vet`.
func (*noCopy) Lock() {}
// atomicBool is a wrapper around uint32 for usage as a boolean value with
// atomic access.
type atomicBool struct {
_noCopy noCopy
value uint32
}
// IsSet returns wether the current boolean value is true
func (ab *atomicBool) IsSet() bool {
return atomic.LoadUint32(&ab.value) > 0
}
// Set sets the value of the bool regardless of the previous value
func (ab *atomicBool) Set(value bool) {
if value {
atomic.StoreUint32(&ab.value, 1)
} else {
atomic.StoreUint32(&ab.value, 0)
}
}
// TrySet sets the value of the bool and returns wether the value changed
func (ab *atomicBool) TrySet(value bool) bool {
if value {
return atomic.SwapUint32(&ab.value, 1) == 0
}
return atomic.SwapUint32(&ab.value, 0) > 0
}
// atomicError is a wrapper for atomically accessed error values
type atomicError struct {
_noCopy noCopy
value atomic.Value
}
// Set sets the error value regardless of the previous value.
// The value must not be nil
func (ae *atomicError) Set(value error) {
ae.value.Store(value)
}
// Value returns the current error value
func (ae *atomicError) Value() error {
if v := ae.value.Load(); v != nil {
// this will panic if the value doesn't implement the error interface
return v.(error)
}
return nil
}

40
vendor/github.com/go-sql-driver/mysql/utils_go17.go generated vendored Normal file
View file

@ -0,0 +1,40 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
// +build go1.7
// +build !go1.8
package mysql
import "crypto/tls"
func cloneTLSConfig(c *tls.Config) *tls.Config {
return &tls.Config{
Rand: c.Rand,
Time: c.Time,
Certificates: c.Certificates,
NameToCertificate: c.NameToCertificate,
GetCertificate: c.GetCertificate,
RootCAs: c.RootCAs,
NextProtos: c.NextProtos,
ServerName: c.ServerName,
ClientAuth: c.ClientAuth,
ClientCAs: c.ClientCAs,
InsecureSkipVerify: c.InsecureSkipVerify,
CipherSuites: c.CipherSuites,
PreferServerCipherSuites: c.PreferServerCipherSuites,
SessionTicketsDisabled: c.SessionTicketsDisabled,
SessionTicketKey: c.SessionTicketKey,
ClientSessionCache: c.ClientSessionCache,
MinVersion: c.MinVersion,
MaxVersion: c.MaxVersion,
CurvePreferences: c.CurvePreferences,
DynamicRecordSizingDisabled: c.DynamicRecordSizingDisabled,
Renegotiation: c.Renegotiation,
}
}

50
vendor/github.com/go-sql-driver/mysql/utils_go18.go generated vendored Normal file
View file

@ -0,0 +1,50 @@
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2017 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
// +build go1.8
package mysql
import (
"crypto/tls"
"database/sql"
"database/sql/driver"
"errors"
"fmt"
)
func cloneTLSConfig(c *tls.Config) *tls.Config {
return c.Clone()
}
func namedValueToValue(named []driver.NamedValue) ([]driver.Value, error) {
dargs := make([]driver.Value, len(named))
for n, param := range named {
if len(param.Name) > 0 {
// TODO: support the use of Named Parameters #561
return nil, errors.New("mysql: driver does not support the use of Named Parameters")
}
dargs[n] = param.Value
}
return dargs, nil
}
func mapIsolationLevel(level driver.IsolationLevel) (string, error) {
switch sql.IsolationLevel(level) {
case sql.LevelRepeatableRead:
return "REPEATABLE READ", nil
case sql.LevelReadCommitted:
return "READ COMMITTED", nil
case sql.LevelReadUncommitted:
return "READ UNCOMMITTED", nil
case sql.LevelSerializable:
return "SERIALIZABLE", nil
default:
return "", fmt.Errorf("mysql: unsupported isolation level: %v", level)
}
}

27
vendor/github.com/jmoiron/sqlx/.travis.yml generated vendored Normal file
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@ -0,0 +1,27 @@
# vim: ft=yaml sw=2 ts=2
language: go
# enable database services
services:
- mysql
- postgresql
# create test database
before_install:
- mysql -e 'CREATE DATABASE IF NOT EXISTS sqlxtest;'
- psql -c 'create database sqlxtest;' -U postgres
- go get github.com/mattn/goveralls
- export SQLX_MYSQL_DSN="travis:@/sqlxtest?parseTime=true"
- export SQLX_POSTGRES_DSN="postgres://postgres:@localhost/sqlxtest?sslmode=disable"
- export SQLX_SQLITE_DSN="$HOME/sqlxtest.db"
# go versions to test
go:
- "1.8"
- "1.9"
- "1.10.x"
# run tests w/ coverage
script:
- travis_retry $GOPATH/bin/goveralls -service=travis-ci

2
vendor/github.com/jmoiron/sqlx/README.md generated vendored
View file

@ -1,6 +1,6 @@
# sqlx
[![Build Status](https://drone.io/github.com/jmoiron/sqlx/status.png)](https://drone.io/github.com/jmoiron/sqlx/latest) [![Godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/jmoiron/sqlx) [![license](http://img.shields.io/badge/license-MIT-red.svg?style=flat)](https://raw.githubusercontent.com/jmoiron/sqlx/master/LICENSE)
[![Build Status](https://travis-ci.org/jmoiron/sqlx.svg?branch=master)](https://travis-ci.org/jmoiron/sqlx) [![Coverage Status](https://coveralls.io/repos/github/jmoiron/sqlx/badge.svg?branch=master)](https://coveralls.io/github/jmoiron/sqlx?branch=master) [![Godoc](http://img.shields.io/badge/godoc-reference-blue.svg?style=flat)](https://godoc.org/github.com/jmoiron/sqlx) [![license](http://img.shields.io/badge/license-MIT-red.svg?style=flat)](https://raw.githubusercontent.com/jmoiron/sqlx/master/LICENSE)
sqlx is a library which provides a set of extensions on go's standard
`database/sql` library. The sqlx versions of `sql.DB`, `sql.TX`, `sql.Stmt`,

5
vendor/github.com/jmoiron/sqlx/bind.go generated vendored
View file

@ -21,7 +21,7 @@ const (
// BindType returns the bindtype for a given database given a drivername.
func BindType(driverName string) int {
switch driverName {
case "postgres", "pgx", "pq-timeouts":
case "postgres", "pgx", "pq-timeouts", "cloudsqlpostgres":
return DOLLAR
case "mysql":
return QUESTION
@ -113,7 +113,8 @@ func In(query string, args ...interface{}) (string, []interface{}, error) {
v := reflect.ValueOf(arg)
t := reflectx.Deref(v.Type())
if t.Kind() == reflect.Slice {
// []byte is a driver.Value type so it should not be expanded
if t.Kind() == reflect.Slice && t != reflect.TypeOf([]byte{}) {
meta[i].length = v.Len()
meta[i].v = v

10
vendor/github.com/jmoiron/sqlx/sqlx.go generated vendored
View file

@ -228,6 +228,14 @@ func (r *Row) Columns() ([]string, error) {
return r.rows.Columns()
}
// ColumnTypes returns the underlying sql.Rows.ColumnTypes(), or the deferred error
func (r *Row) ColumnTypes() ([]*sql.ColumnType, error) {
if r.err != nil {
return []*sql.ColumnType{}, r.err
}
return r.rows.ColumnTypes()
}
// Err returns the error encountered while scanning.
func (r *Row) Err() error {
return r.err
@ -593,7 +601,7 @@ func (r *Rows) StructScan(dest interface{}) error {
return errors.New("must pass a pointer, not a value, to StructScan destination")
}
v = reflect.Indirect(v)
v = v.Elem()
if !r.started {
columns, err := r.Columns()

13
vendor/github.com/jmoiron/sqlx/sqlx_context.go generated vendored
View file

@ -237,6 +237,19 @@ func (tx *Tx) NamedStmtContext(ctx context.Context, stmt *NamedStmt) *NamedStmt
}
}
// PreparexContext returns an sqlx.Stmt instead of a sql.Stmt.
//
// The provided context is used for the preparation of the statement, not for
// the execution of the statement.
func (tx *Tx) PreparexContext(ctx context.Context, query string) (*Stmt, error) {
return PreparexContext(ctx, tx, query)
}
// PrepareNamedContext returns an sqlx.NamedStmt
func (tx *Tx) PrepareNamedContext(ctx context.Context, query string) (*NamedStmt, error) {
return prepareNamedContext(ctx, tx, query)
}
// MustExecContext runs MustExecContext within a transaction.
// Any placeholder parameters are replaced with supplied args.
func (tx *Tx) MustExecContext(ctx context.Context, query string, args ...interface{}) sql.Result {

4
vendor/github.com/lib/pq/.gitignore generated vendored Normal file
View file

@ -0,0 +1,4 @@
.db
*.test
*~
*.swp

86
vendor/github.com/lib/pq/.travis.sh generated vendored Executable file
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@ -0,0 +1,86 @@
#!/bin/bash
set -eu
client_configure() {
sudo chmod 600 $PQSSLCERTTEST_PATH/postgresql.key
}
pgdg_repository() {
local sourcelist='sources.list.d/postgresql.list'
curl -sS 'https://www.postgresql.org/media/keys/ACCC4CF8.asc' | sudo apt-key add -
echo deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main $PGVERSION | sudo tee "/etc/apt/$sourcelist"
sudo apt-get -o Dir::Etc::sourcelist="$sourcelist" -o Dir::Etc::sourceparts='-' -o APT::Get::List-Cleanup='0' update
}
postgresql_configure() {
sudo tee /etc/postgresql/$PGVERSION/main/pg_hba.conf > /dev/null <<-config
local all all trust
hostnossl all pqgossltest 127.0.0.1/32 reject
hostnossl all pqgosslcert 127.0.0.1/32 reject
hostssl all pqgossltest 127.0.0.1/32 trust
hostssl all pqgosslcert 127.0.0.1/32 cert
host all all 127.0.0.1/32 trust
hostnossl all pqgossltest ::1/128 reject
hostnossl all pqgosslcert ::1/128 reject
hostssl all pqgossltest ::1/128 trust
hostssl all pqgosslcert ::1/128 cert
host all all ::1/128 trust
config
xargs sudo install -o postgres -g postgres -m 600 -t /var/lib/postgresql/$PGVERSION/main/ <<-certificates
certs/root.crt
certs/server.crt
certs/server.key
certificates
sort -VCu <<-versions ||
$PGVERSION
9.2
versions
sudo tee -a /etc/postgresql/$PGVERSION/main/postgresql.conf > /dev/null <<-config
ssl_ca_file = 'root.crt'
ssl_cert_file = 'server.crt'
ssl_key_file = 'server.key'
config
echo 127.0.0.1 postgres | sudo tee -a /etc/hosts > /dev/null
sudo service postgresql restart
}
postgresql_install() {
xargs sudo apt-get -y -o Dpkg::Options::='--force-confdef' -o Dpkg::Options::='--force-confnew' install <<-packages
postgresql-$PGVERSION
postgresql-server-dev-$PGVERSION
postgresql-contrib-$PGVERSION
packages
}
postgresql_uninstall() {
sudo service postgresql stop
xargs sudo apt-get -y --purge remove <<-packages
libpq-dev
libpq5
postgresql
postgresql-client-common
postgresql-common
packages
sudo rm -rf /var/lib/postgresql
}
megacheck_install() {
# Lock megacheck version at $MEGACHECK_VERSION to prevent spontaneous
# new error messages in old code.
go get -d honnef.co/go/tools/...
git -C $GOPATH/src/honnef.co/go/tools/ checkout $MEGACHECK_VERSION
go install honnef.co/go/tools/cmd/megacheck
megacheck --version
}
golint_install() {
go get github.com/golang/lint/golint
}
$1

50
vendor/github.com/lib/pq/.travis.yml generated vendored Normal file
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@ -0,0 +1,50 @@
language: go
go:
- 1.8.x
- 1.9.x
- 1.10.x
- master
sudo: true
env:
global:
- PGUSER=postgres
- PQGOSSLTESTS=1
- PQSSLCERTTEST_PATH=$PWD/certs
- PGHOST=127.0.0.1
- MEGACHECK_VERSION=2017.2.2
matrix:
- PGVERSION=10
- PGVERSION=9.6
- PGVERSION=9.5
- PGVERSION=9.4
- PGVERSION=9.3
- PGVERSION=9.2
- PGVERSION=9.1
- PGVERSION=9.0
before_install:
- ./.travis.sh postgresql_uninstall
- ./.travis.sh pgdg_repository
- ./.travis.sh postgresql_install
- ./.travis.sh postgresql_configure
- ./.travis.sh client_configure
- ./.travis.sh megacheck_install
- ./.travis.sh golint_install
- go get golang.org/x/tools/cmd/goimports
before_script:
- createdb pqgotest
- createuser -DRS pqgossltest
- createuser -DRS pqgosslcert
script:
- >
goimports -d -e $(find -name '*.go') | awk '{ print } END { exit NR == 0 ? 0 : 1 }'
- go vet ./...
- megacheck -go 1.8 ./...
- golint ./...
- PQTEST_BINARY_PARAMETERS=no go test -race -v ./...
- PQTEST_BINARY_PARAMETERS=yes go test -race -v ./...

29
vendor/github.com/lib/pq/CONTRIBUTING.md generated vendored Normal file
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@ -0,0 +1,29 @@
## Contributing to pq
`pq` has a backlog of pull requests, but contributions are still very
much welcome. You can help with patch review, submitting bug reports,
or adding new functionality. There is no formal style guide, but
please conform to the style of existing code and general Go formatting
conventions when submitting patches.
### Patch review
Help review existing open pull requests by commenting on the code or
proposed functionality.
### Bug reports
We appreciate any bug reports, but especially ones with self-contained
(doesn't depend on code outside of pq), minimal (can't be simplified
further) test cases. It's especially helpful if you can submit a pull
request with just the failing test case (you'll probably want to
pattern it after the tests in
[conn_test.go](https://github.com/lib/pq/blob/master/conn_test.go).
### New functionality
There are a number of pending patches for new functionality, so
additional feature patches will take a while to merge. Still, patches
are generally reviewed based on usefulness and complexity in addition
to time-in-queue, so if you have a knockout idea, take a shot. Feel
free to open an issue discussion your proposed patch beforehand.

8
vendor/github.com/lib/pq/LICENSE.md generated vendored Normal file
View file

@ -0,0 +1,8 @@
Copyright (c) 2011-2013, 'pq' Contributors
Portions Copyright (C) 2011 Blake Mizerany
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

95
vendor/github.com/lib/pq/README.md generated vendored Normal file
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@ -0,0 +1,95 @@
# pq - A pure Go postgres driver for Go's database/sql package
[![GoDoc](https://godoc.org/github.com/lib/pq?status.svg)](https://godoc.org/github.com/lib/pq)
[![Build Status](https://travis-ci.org/lib/pq.svg?branch=master)](https://travis-ci.org/lib/pq)
## Install
go get github.com/lib/pq
## Docs
For detailed documentation and basic usage examples, please see the package
documentation at <http://godoc.org/github.com/lib/pq>.
## Tests
`go test` is used for testing. See [TESTS.md](TESTS.md) for more details.
## Features
* SSL
* Handles bad connections for `database/sql`
* Scan `time.Time` correctly (i.e. `timestamp[tz]`, `time[tz]`, `date`)
* Scan binary blobs correctly (i.e. `bytea`)
* Package for `hstore` support
* COPY FROM support
* pq.ParseURL for converting urls to connection strings for sql.Open.
* Many libpq compatible environment variables
* Unix socket support
* Notifications: `LISTEN`/`NOTIFY`
* pgpass support
## Future / Things you can help with
* Better COPY FROM / COPY TO (see discussion in #181)
## Thank you (alphabetical)
Some of these contributors are from the original library `bmizerany/pq.go` whose
code still exists in here.
* Andy Balholm (andybalholm)
* Ben Berkert (benburkert)
* Benjamin Heatwole (bheatwole)
* Bill Mill (llimllib)
* Bjørn Madsen (aeons)
* Blake Gentry (bgentry)
* Brad Fitzpatrick (bradfitz)
* Charlie Melbye (cmelbye)
* Chris Bandy (cbandy)
* Chris Gilling (cgilling)
* Chris Walsh (cwds)
* Dan Sosedoff (sosedoff)
* Daniel Farina (fdr)
* Eric Chlebek (echlebek)
* Eric Garrido (minusnine)
* Eric Urban (hydrogen18)
* Everyone at The Go Team
* Evan Shaw (edsrzf)
* Ewan Chou (coocood)
* Fazal Majid (fazalmajid)
* Federico Romero (federomero)
* Fumin (fumin)
* Gary Burd (garyburd)
* Heroku (heroku)
* James Pozdena (jpoz)
* Jason McVetta (jmcvetta)
* Jeremy Jay (pbnjay)
* Joakim Sernbrant (serbaut)
* John Gallagher (jgallagher)
* Jonathan Rudenberg (titanous)
* Joël Stemmer (jstemmer)
* Kamil Kisiel (kisielk)
* Kelly Dunn (kellydunn)
* Keith Rarick (kr)
* Kir Shatrov (kirs)
* Lann Martin (lann)
* Maciek Sakrejda (uhoh-itsmaciek)
* Marc Brinkmann (mbr)
* Marko Tiikkaja (johto)
* Matt Newberry (MattNewberry)
* Matt Robenolt (mattrobenolt)
* Martin Olsen (martinolsen)
* Mike Lewis (mikelikespie)
* Nicolas Patry (Narsil)
* Oliver Tonnhofer (olt)
* Patrick Hayes (phayes)
* Paul Hammond (paulhammond)
* Ryan Smith (ryandotsmith)
* Samuel Stauffer (samuel)
* Timothée Peignier (cyberdelia)
* Travis Cline (tmc)
* TruongSinh Tran-Nguyen (truongsinh)
* Yaismel Miranda (ympons)
* notedit (notedit)

33
vendor/github.com/lib/pq/TESTS.md generated vendored Normal file
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@ -0,0 +1,33 @@
# Tests
## Running Tests
`go test` is used for testing. A running PostgreSQL
server is required, with the ability to log in. The
database to connect to test with is "pqgotest," on
"localhost" but these can be overridden using [environment
variables](https://www.postgresql.org/docs/9.3/static/libpq-envars.html).
Example:
PGHOST=/run/postgresql go test
## Benchmarks
A benchmark suite can be run as part of the tests:
go test -bench .
## Example setup (Docker)
Run a postgres container:
```
docker run --expose 5432:5432 postgres
```
Run tests:
```
PGHOST=localhost PGPORT=5432 PGUSER=postgres PGSSLMODE=disable PGDATABASE=postgres go test
```

756
vendor/github.com/lib/pq/array.go generated vendored Normal file
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@ -0,0 +1,756 @@
package pq
import (
"bytes"
"database/sql"
"database/sql/driver"
"encoding/hex"
"fmt"
"reflect"
"strconv"
"strings"
)
var typeByteSlice = reflect.TypeOf([]byte{})
var typeDriverValuer = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
var typeSQLScanner = reflect.TypeOf((*sql.Scanner)(nil)).Elem()
// Array returns the optimal driver.Valuer and sql.Scanner for an array or
// slice of any dimension.
//
// For example:
// db.Query(`SELECT * FROM t WHERE id = ANY($1)`, pq.Array([]int{235, 401}))
//
// var x []sql.NullInt64
// db.QueryRow('SELECT ARRAY[235, 401]').Scan(pq.Array(&x))
//
// Scanning multi-dimensional arrays is not supported. Arrays where the lower
// bound is not one (such as `[0:0]={1}') are not supported.
func Array(a interface{}) interface {
driver.Valuer
sql.Scanner
} {
switch a := a.(type) {
case []bool:
return (*BoolArray)(&a)
case []float64:
return (*Float64Array)(&a)
case []int64:
return (*Int64Array)(&a)
case []string:
return (*StringArray)(&a)
case *[]bool:
return (*BoolArray)(a)
case *[]float64:
return (*Float64Array)(a)
case *[]int64:
return (*Int64Array)(a)
case *[]string:
return (*StringArray)(a)
}
return GenericArray{a}
}
// ArrayDelimiter may be optionally implemented by driver.Valuer or sql.Scanner
// to override the array delimiter used by GenericArray.
type ArrayDelimiter interface {
// ArrayDelimiter returns the delimiter character(s) for this element's type.
ArrayDelimiter() string
}
// BoolArray represents a one-dimensional array of the PostgreSQL boolean type.
type BoolArray []bool
// Scan implements the sql.Scanner interface.
func (a *BoolArray) Scan(src interface{}) error {
switch src := src.(type) {
case []byte:
return a.scanBytes(src)
case string:
return a.scanBytes([]byte(src))
case nil:
*a = nil
return nil
}
return fmt.Errorf("pq: cannot convert %T to BoolArray", src)
}
func (a *BoolArray) scanBytes(src []byte) error {
elems, err := scanLinearArray(src, []byte{','}, "BoolArray")
if err != nil {
return err
}
if *a != nil && len(elems) == 0 {
*a = (*a)[:0]
} else {
b := make(BoolArray, len(elems))
for i, v := range elems {
if len(v) != 1 {
return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v)
}
switch v[0] {
case 't':
b[i] = true
case 'f':
b[i] = false
default:
return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v)
}
}
*a = b
}
return nil
}
// Value implements the driver.Valuer interface.
func (a BoolArray) Value() (driver.Value, error) {
if a == nil {
return nil, nil
}
if n := len(a); n > 0 {
// There will be exactly two curly brackets, N bytes of values,
// and N-1 bytes of delimiters.
b := make([]byte, 1+2*n)
for i := 0; i < n; i++ {
b[2*i] = ','
if a[i] {
b[1+2*i] = 't'
} else {
b[1+2*i] = 'f'
}
}
b[0] = '{'
b[2*n] = '}'
return string(b), nil
}
return "{}", nil
}
// ByteaArray represents a one-dimensional array of the PostgreSQL bytea type.
type ByteaArray [][]byte
// Scan implements the sql.Scanner interface.
func (a *ByteaArray) Scan(src interface{}) error {
switch src := src.(type) {
case []byte:
return a.scanBytes(src)
case string:
return a.scanBytes([]byte(src))
case nil:
*a = nil
return nil
}
return fmt.Errorf("pq: cannot convert %T to ByteaArray", src)
}
func (a *ByteaArray) scanBytes(src []byte) error {
elems, err := scanLinearArray(src, []byte{','}, "ByteaArray")
if err != nil {
return err
}
if *a != nil && len(elems) == 0 {
*a = (*a)[:0]
} else {
b := make(ByteaArray, len(elems))
for i, v := range elems {
b[i], err = parseBytea(v)
if err != nil {
return fmt.Errorf("could not parse bytea array index %d: %s", i, err.Error())
}
}
*a = b
}
return nil
}
// Value implements the driver.Valuer interface. It uses the "hex" format which
// is only supported on PostgreSQL 9.0 or newer.
func (a ByteaArray) Value() (driver.Value, error) {
if a == nil {
return nil, nil
}
if n := len(a); n > 0 {
// There will be at least two curly brackets, 2*N bytes of quotes,
// 3*N bytes of hex formatting, and N-1 bytes of delimiters.
size := 1 + 6*n
for _, x := range a {
size += hex.EncodedLen(len(x))
}
b := make([]byte, size)
for i, s := 0, b; i < n; i++ {
o := copy(s, `,"\\x`)
o += hex.Encode(s[o:], a[i])
s[o] = '"'
s = s[o+1:]
}
b[0] = '{'
b[size-1] = '}'
return string(b), nil
}
return "{}", nil
}
// Float64Array represents a one-dimensional array of the PostgreSQL double
// precision type.
type Float64Array []float64
// Scan implements the sql.Scanner interface.
func (a *Float64Array) Scan(src interface{}) error {
switch src := src.(type) {
case []byte:
return a.scanBytes(src)
case string:
return a.scanBytes([]byte(src))
case nil:
*a = nil
return nil
}
return fmt.Errorf("pq: cannot convert %T to Float64Array", src)
}
func (a *Float64Array) scanBytes(src []byte) error {
elems, err := scanLinearArray(src, []byte{','}, "Float64Array")
if err != nil {
return err
}
if *a != nil && len(elems) == 0 {
*a = (*a)[:0]
} else {
b := make(Float64Array, len(elems))
for i, v := range elems {
if b[i], err = strconv.ParseFloat(string(v), 64); err != nil {
return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
}
}
*a = b
}
return nil
}
// Value implements the driver.Valuer interface.
func (a Float64Array) Value() (driver.Value, error) {
if a == nil {
return nil, nil
}
if n := len(a); n > 0 {
// There will be at least two curly brackets, N bytes of values,
// and N-1 bytes of delimiters.
b := make([]byte, 1, 1+2*n)
b[0] = '{'
b = strconv.AppendFloat(b, a[0], 'f', -1, 64)
for i := 1; i < n; i++ {
b = append(b, ',')
b = strconv.AppendFloat(b, a[i], 'f', -1, 64)
}
return string(append(b, '}')), nil
}
return "{}", nil
}
// GenericArray implements the driver.Valuer and sql.Scanner interfaces for
// an array or slice of any dimension.
type GenericArray struct{ A interface{} }
func (GenericArray) evaluateDestination(rt reflect.Type) (reflect.Type, func([]byte, reflect.Value) error, string) {
var assign func([]byte, reflect.Value) error
var del = ","
// TODO calculate the assign function for other types
// TODO repeat this section on the element type of arrays or slices (multidimensional)
{
if reflect.PtrTo(rt).Implements(typeSQLScanner) {
// dest is always addressable because it is an element of a slice.
assign = func(src []byte, dest reflect.Value) (err error) {
ss := dest.Addr().Interface().(sql.Scanner)
if src == nil {
err = ss.Scan(nil)
} else {
err = ss.Scan(src)
}
return
}
goto FoundType
}
assign = func([]byte, reflect.Value) error {
return fmt.Errorf("pq: scanning to %s is not implemented; only sql.Scanner", rt)
}
}
FoundType:
if ad, ok := reflect.Zero(rt).Interface().(ArrayDelimiter); ok {
del = ad.ArrayDelimiter()
}
return rt, assign, del
}
// Scan implements the sql.Scanner interface.
func (a GenericArray) Scan(src interface{}) error {
dpv := reflect.ValueOf(a.A)
switch {
case dpv.Kind() != reflect.Ptr:
return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A)
case dpv.IsNil():
return fmt.Errorf("pq: destination %T is nil", a.A)
}
dv := dpv.Elem()
switch dv.Kind() {
case reflect.Slice:
case reflect.Array:
default:
return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A)
}
switch src := src.(type) {
case []byte:
return a.scanBytes(src, dv)
case string:
return a.scanBytes([]byte(src), dv)
case nil:
if dv.Kind() == reflect.Slice {
dv.Set(reflect.Zero(dv.Type()))
return nil
}
}
return fmt.Errorf("pq: cannot convert %T to %s", src, dv.Type())
}
func (a GenericArray) scanBytes(src []byte, dv reflect.Value) error {
dtype, assign, del := a.evaluateDestination(dv.Type().Elem())
dims, elems, err := parseArray(src, []byte(del))
if err != nil {
return err
}
// TODO allow multidimensional
if len(dims) > 1 {
return fmt.Errorf("pq: scanning from multidimensional ARRAY%s is not implemented",
strings.Replace(fmt.Sprint(dims), " ", "][", -1))
}
// Treat a zero-dimensional array like an array with a single dimension of zero.
if len(dims) == 0 {
dims = append(dims, 0)
}
for i, rt := 0, dv.Type(); i < len(dims); i, rt = i+1, rt.Elem() {
switch rt.Kind() {
case reflect.Slice:
case reflect.Array:
if rt.Len() != dims[i] {
return fmt.Errorf("pq: cannot convert ARRAY%s to %s",
strings.Replace(fmt.Sprint(dims), " ", "][", -1), dv.Type())
}
default:
// TODO handle multidimensional
}
}
values := reflect.MakeSlice(reflect.SliceOf(dtype), len(elems), len(elems))
for i, e := range elems {
if err := assign(e, values.Index(i)); err != nil {
return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
}
}
// TODO handle multidimensional
switch dv.Kind() {
case reflect.Slice:
dv.Set(values.Slice(0, dims[0]))
case reflect.Array:
for i := 0; i < dims[0]; i++ {
dv.Index(i).Set(values.Index(i))
}
}
return nil
}
// Value implements the driver.Valuer interface.
func (a GenericArray) Value() (driver.Value, error) {
if a.A == nil {
return nil, nil
}
rv := reflect.ValueOf(a.A)
switch rv.Kind() {
case reflect.Slice:
if rv.IsNil() {
return nil, nil
}
case reflect.Array:
default:
return nil, fmt.Errorf("pq: Unable to convert %T to array", a.A)
}
if n := rv.Len(); n > 0 {
// There will be at least two curly brackets, N bytes of values,
// and N-1 bytes of delimiters.
b := make([]byte, 0, 1+2*n)
b, _, err := appendArray(b, rv, n)
return string(b), err
}
return "{}", nil
}
// Int64Array represents a one-dimensional array of the PostgreSQL integer types.
type Int64Array []int64
// Scan implements the sql.Scanner interface.
func (a *Int64Array) Scan(src interface{}) error {
switch src := src.(type) {
case []byte:
return a.scanBytes(src)
case string:
return a.scanBytes([]byte(src))
case nil:
*a = nil
return nil
}
return fmt.Errorf("pq: cannot convert %T to Int64Array", src)
}
func (a *Int64Array) scanBytes(src []byte) error {
elems, err := scanLinearArray(src, []byte{','}, "Int64Array")
if err != nil {
return err
}
if *a != nil && len(elems) == 0 {
*a = (*a)[:0]
} else {
b := make(Int64Array, len(elems))
for i, v := range elems {
if b[i], err = strconv.ParseInt(string(v), 10, 64); err != nil {
return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
}
}
*a = b
}
return nil
}
// Value implements the driver.Valuer interface.
func (a Int64Array) Value() (driver.Value, error) {
if a == nil {
return nil, nil
}
if n := len(a); n > 0 {
// There will be at least two curly brackets, N bytes of values,
// and N-1 bytes of delimiters.
b := make([]byte, 1, 1+2*n)
b[0] = '{'
b = strconv.AppendInt(b, a[0], 10)
for i := 1; i < n; i++ {
b = append(b, ',')
b = strconv.AppendInt(b, a[i], 10)
}
return string(append(b, '}')), nil
}
return "{}", nil
}
// StringArray represents a one-dimensional array of the PostgreSQL character types.
type StringArray []string
// Scan implements the sql.Scanner interface.
func (a *StringArray) Scan(src interface{}) error {
switch src := src.(type) {
case []byte:
return a.scanBytes(src)
case string:
return a.scanBytes([]byte(src))
case nil:
*a = nil
return nil
}
return fmt.Errorf("pq: cannot convert %T to StringArray", src)
}
func (a *StringArray) scanBytes(src []byte) error {
elems, err := scanLinearArray(src, []byte{','}, "StringArray")
if err != nil {
return err
}
if *a != nil && len(elems) == 0 {
*a = (*a)[:0]
} else {
b := make(StringArray, len(elems))
for i, v := range elems {
if b[i] = string(v); v == nil {
return fmt.Errorf("pq: parsing array element index %d: cannot convert nil to string", i)
}
}
*a = b
}
return nil
}
// Value implements the driver.Valuer interface.
func (a StringArray) Value() (driver.Value, error) {
if a == nil {
return nil, nil
}
if n := len(a); n > 0 {
// There will be at least two curly brackets, 2*N bytes of quotes,
// and N-1 bytes of delimiters.
b := make([]byte, 1, 1+3*n)
b[0] = '{'
b = appendArrayQuotedBytes(b, []byte(a[0]))
for i := 1; i < n; i++ {
b = append(b, ',')
b = appendArrayQuotedBytes(b, []byte(a[i]))
}
return string(append(b, '}')), nil
}
return "{}", nil
}
// appendArray appends rv to the buffer, returning the extended buffer and
// the delimiter used between elements.
//
// It panics when n <= 0 or rv's Kind is not reflect.Array nor reflect.Slice.
func appendArray(b []byte, rv reflect.Value, n int) ([]byte, string, error) {
var del string
var err error
b = append(b, '{')
if b, del, err = appendArrayElement(b, rv.Index(0)); err != nil {
return b, del, err
}
for i := 1; i < n; i++ {
b = append(b, del...)
if b, del, err = appendArrayElement(b, rv.Index(i)); err != nil {
return b, del, err
}
}
return append(b, '}'), del, nil
}
// appendArrayElement appends rv to the buffer, returning the extended buffer
// and the delimiter to use before the next element.
//
// When rv's Kind is neither reflect.Array nor reflect.Slice, it is converted
// using driver.DefaultParameterConverter and the resulting []byte or string
// is double-quoted.
//
// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
func appendArrayElement(b []byte, rv reflect.Value) ([]byte, string, error) {
if k := rv.Kind(); k == reflect.Array || k == reflect.Slice {
if t := rv.Type(); t != typeByteSlice && !t.Implements(typeDriverValuer) {
if n := rv.Len(); n > 0 {
return appendArray(b, rv, n)
}
return b, "", nil
}
}
var del = ","
var err error
var iv interface{} = rv.Interface()
if ad, ok := iv.(ArrayDelimiter); ok {
del = ad.ArrayDelimiter()
}
if iv, err = driver.DefaultParameterConverter.ConvertValue(iv); err != nil {
return b, del, err
}
switch v := iv.(type) {
case nil:
return append(b, "NULL"...), del, nil
case []byte:
return appendArrayQuotedBytes(b, v), del, nil
case string:
return appendArrayQuotedBytes(b, []byte(v)), del, nil
}
b, err = appendValue(b, iv)
return b, del, err
}
func appendArrayQuotedBytes(b, v []byte) []byte {
b = append(b, '"')
for {
i := bytes.IndexAny(v, `"\`)
if i < 0 {
b = append(b, v...)
break
}
if i > 0 {
b = append(b, v[:i]...)
}
b = append(b, '\\', v[i])
v = v[i+1:]
}
return append(b, '"')
}
func appendValue(b []byte, v driver.Value) ([]byte, error) {
return append(b, encode(nil, v, 0)...), nil
}
// parseArray extracts the dimensions and elements of an array represented in
// text format. Only representations emitted by the backend are supported.
// Notably, whitespace around brackets and delimiters is significant, and NULL
// is case-sensitive.
//
// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
func parseArray(src, del []byte) (dims []int, elems [][]byte, err error) {
var depth, i int
if len(src) < 1 || src[0] != '{' {
return nil, nil, fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '{', 0)
}
Open:
for i < len(src) {
switch src[i] {
case '{':
depth++
i++
case '}':
elems = make([][]byte, 0)
goto Close
default:
break Open
}
}
dims = make([]int, i)
Element:
for i < len(src) {
switch src[i] {
case '{':
if depth == len(dims) {
break Element
}
depth++
dims[depth-1] = 0
i++
case '"':
var elem = []byte{}
var escape bool
for i++; i < len(src); i++ {
if escape {
elem = append(elem, src[i])
escape = false
} else {
switch src[i] {
default:
elem = append(elem, src[i])
case '\\':
escape = true
case '"':
elems = append(elems, elem)
i++
break Element
}
}
}
default:
for start := i; i < len(src); i++ {
if bytes.HasPrefix(src[i:], del) || src[i] == '}' {
elem := src[start:i]
if len(elem) == 0 {
return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
}
if bytes.Equal(elem, []byte("NULL")) {
elem = nil
}
elems = append(elems, elem)
break Element
}
}
}
}
for i < len(src) {
if bytes.HasPrefix(src[i:], del) && depth > 0 {
dims[depth-1]++
i += len(del)
goto Element
} else if src[i] == '}' && depth > 0 {
dims[depth-1]++
depth--
i++
} else {
return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
}
}
Close:
for i < len(src) {
if src[i] == '}' && depth > 0 {
depth--
i++
} else {
return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
}
}
if depth > 0 {
err = fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '}', i)
}
if err == nil {
for _, d := range dims {
if (len(elems) % d) != 0 {
err = fmt.Errorf("pq: multidimensional arrays must have elements with matching dimensions")
}
}
}
return
}
func scanLinearArray(src, del []byte, typ string) (elems [][]byte, err error) {
dims, elems, err := parseArray(src, del)
if err != nil {
return nil, err
}
if len(dims) > 1 {
return nil, fmt.Errorf("pq: cannot convert ARRAY%s to %s", strings.Replace(fmt.Sprint(dims), " ", "][", -1), typ)
}
return elems, err
}

91
vendor/github.com/lib/pq/buf.go generated vendored Normal file
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package pq
import (
"bytes"
"encoding/binary"
"github.com/lib/pq/oid"
)
type readBuf []byte
func (b *readBuf) int32() (n int) {
n = int(int32(binary.BigEndian.Uint32(*b)))
*b = (*b)[4:]
return
}
func (b *readBuf) oid() (n oid.Oid) {
n = oid.Oid(binary.BigEndian.Uint32(*b))
*b = (*b)[4:]
return
}
// N.B: this is actually an unsigned 16-bit integer, unlike int32
func (b *readBuf) int16() (n int) {
n = int(binary.BigEndian.Uint16(*b))
*b = (*b)[2:]
return
}
func (b *readBuf) string() string {
i := bytes.IndexByte(*b, 0)
if i < 0 {
errorf("invalid message format; expected string terminator")
}
s := (*b)[:i]
*b = (*b)[i+1:]
return string(s)
}
func (b *readBuf) next(n int) (v []byte) {
v = (*b)[:n]
*b = (*b)[n:]
return
}
func (b *readBuf) byte() byte {
return b.next(1)[0]
}
type writeBuf struct {
buf []byte
pos int
}
func (b *writeBuf) int32(n int) {
x := make([]byte, 4)
binary.BigEndian.PutUint32(x, uint32(n))
b.buf = append(b.buf, x...)
}
func (b *writeBuf) int16(n int) {
x := make([]byte, 2)
binary.BigEndian.PutUint16(x, uint16(n))
b.buf = append(b.buf, x...)
}
func (b *writeBuf) string(s string) {
b.buf = append(b.buf, (s + "\000")...)
}
func (b *writeBuf) byte(c byte) {
b.buf = append(b.buf, c)
}
func (b *writeBuf) bytes(v []byte) {
b.buf = append(b.buf, v...)
}
func (b *writeBuf) wrap() []byte {
p := b.buf[b.pos:]
binary.BigEndian.PutUint32(p, uint32(len(p)))
return b.buf
}
func (b *writeBuf) next(c byte) {
p := b.buf[b.pos:]
binary.BigEndian.PutUint32(p, uint32(len(p)))
b.pos = len(b.buf) + 1
b.buf = append(b.buf, c, 0, 0, 0, 0)
}

1854
vendor/github.com/lib/pq/conn.go generated vendored Normal file
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131
vendor/github.com/lib/pq/conn_go18.go generated vendored Normal file
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// +build go1.8
package pq
import (
"context"
"database/sql"
"database/sql/driver"
"fmt"
"io"
"io/ioutil"
)
// Implement the "QueryerContext" interface
func (cn *conn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
list := make([]driver.Value, len(args))
for i, nv := range args {
list[i] = nv.Value
}
finish := cn.watchCancel(ctx)
r, err := cn.query(query, list)
if err != nil {
if finish != nil {
finish()
}
return nil, err
}
r.finish = finish
return r, nil
}
// Implement the "ExecerContext" interface
func (cn *conn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
list := make([]driver.Value, len(args))
for i, nv := range args {
list[i] = nv.Value
}
if finish := cn.watchCancel(ctx); finish != nil {
defer finish()
}
return cn.Exec(query, list)
}
// Implement the "ConnBeginTx" interface
func (cn *conn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
var mode string
switch sql.IsolationLevel(opts.Isolation) {
case sql.LevelDefault:
// Don't touch mode: use the server's default
case sql.LevelReadUncommitted:
mode = " ISOLATION LEVEL READ UNCOMMITTED"
case sql.LevelReadCommitted:
mode = " ISOLATION LEVEL READ COMMITTED"
case sql.LevelRepeatableRead:
mode = " ISOLATION LEVEL REPEATABLE READ"
case sql.LevelSerializable:
mode = " ISOLATION LEVEL SERIALIZABLE"
default:
return nil, fmt.Errorf("pq: isolation level not supported: %d", opts.Isolation)
}
if opts.ReadOnly {
mode += " READ ONLY"
} else {
mode += " READ WRITE"
}
tx, err := cn.begin(mode)
if err != nil {
return nil, err
}
cn.txnFinish = cn.watchCancel(ctx)
return tx, nil
}
func (cn *conn) watchCancel(ctx context.Context) func() {
if done := ctx.Done(); done != nil {
finished := make(chan struct{})
go func() {
select {
case <-done:
_ = cn.cancel()
finished <- struct{}{}
case <-finished:
}
}()
return func() {
select {
case <-finished:
case finished <- struct{}{}:
}
}
}
return nil
}
func (cn *conn) cancel() error {
c, err := dial(cn.dialer, cn.opts)
if err != nil {
return err
}
defer c.Close()
{
can := conn{
c: c,
}
err = can.ssl(cn.opts)
if err != nil {
return err
}
w := can.writeBuf(0)
w.int32(80877102) // cancel request code
w.int32(cn.processID)
w.int32(cn.secretKey)
if err := can.sendStartupPacket(w); err != nil {
return err
}
}
// Read until EOF to ensure that the server received the cancel.
{
_, err := io.Copy(ioutil.Discard, c)
return err
}
}

43
vendor/github.com/lib/pq/connector.go generated vendored Normal file
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// +build go1.10
package pq
import (
"context"
"database/sql/driver"
)
// Connector represents a fixed configuration for the pq driver with a given
// name. Connector satisfies the database/sql/driver Connector interface and
// can be used to create any number of DB Conn's via the database/sql OpenDB
// function.
//
// See https://golang.org/pkg/database/sql/driver/#Connector.
// See https://golang.org/pkg/database/sql/#OpenDB.
type connector struct {
name string
}
// Connect returns a connection to the database using the fixed configuration
// of this Connector. Context is not used.
func (c *connector) Connect(_ context.Context) (driver.Conn, error) {
return (&Driver{}).Open(c.name)
}
// Driver returnst the underlying driver of this Connector.
func (c *connector) Driver() driver.Driver {
return &Driver{}
}
var _ driver.Connector = &connector{}
// NewConnector returns a connector for the pq driver in a fixed configuration
// with the given name. The returned connector can be used to create any number
// of equivalent Conn's. The returned connector is intended to be used with
// database/sql.OpenDB.
//
// See https://golang.org/pkg/database/sql/driver/#Connector.
// See https://golang.org/pkg/database/sql/#OpenDB.
func NewConnector(name string) (driver.Connector, error) {
return &connector{name: name}, nil
}

282
vendor/github.com/lib/pq/copy.go generated vendored Normal file
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package pq
import (
"database/sql/driver"
"encoding/binary"
"errors"
"fmt"
"sync"
)
var (
errCopyInClosed = errors.New("pq: copyin statement has already been closed")
errBinaryCopyNotSupported = errors.New("pq: only text format supported for COPY")
errCopyToNotSupported = errors.New("pq: COPY TO is not supported")
errCopyNotSupportedOutsideTxn = errors.New("pq: COPY is only allowed inside a transaction")
errCopyInProgress = errors.New("pq: COPY in progress")
)
// CopyIn creates a COPY FROM statement which can be prepared with
// Tx.Prepare(). The target table should be visible in search_path.
func CopyIn(table string, columns ...string) string {
stmt := "COPY " + QuoteIdentifier(table) + " ("
for i, col := range columns {
if i != 0 {
stmt += ", "
}
stmt += QuoteIdentifier(col)
}
stmt += ") FROM STDIN"
return stmt
}
// CopyInSchema creates a COPY FROM statement which can be prepared with
// Tx.Prepare().
func CopyInSchema(schema, table string, columns ...string) string {
stmt := "COPY " + QuoteIdentifier(schema) + "." + QuoteIdentifier(table) + " ("
for i, col := range columns {
if i != 0 {
stmt += ", "
}
stmt += QuoteIdentifier(col)
}
stmt += ") FROM STDIN"
return stmt
}
type copyin struct {
cn *conn
buffer []byte
rowData chan []byte
done chan bool
closed bool
sync.Mutex // guards err
err error
}
const ciBufferSize = 64 * 1024
// flush buffer before the buffer is filled up and needs reallocation
const ciBufferFlushSize = 63 * 1024
func (cn *conn) prepareCopyIn(q string) (_ driver.Stmt, err error) {
if !cn.isInTransaction() {
return nil, errCopyNotSupportedOutsideTxn
}
ci := &copyin{
cn: cn,
buffer: make([]byte, 0, ciBufferSize),
rowData: make(chan []byte),
done: make(chan bool, 1),
}
// add CopyData identifier + 4 bytes for message length
ci.buffer = append(ci.buffer, 'd', 0, 0, 0, 0)
b := cn.writeBuf('Q')
b.string(q)
cn.send(b)
awaitCopyInResponse:
for {
t, r := cn.recv1()
switch t {
case 'G':
if r.byte() != 0 {
err = errBinaryCopyNotSupported
break awaitCopyInResponse
}
go ci.resploop()
return ci, nil
case 'H':
err = errCopyToNotSupported
break awaitCopyInResponse
case 'E':
err = parseError(r)
case 'Z':
if err == nil {
ci.setBad()
errorf("unexpected ReadyForQuery in response to COPY")
}
cn.processReadyForQuery(r)
return nil, err
default:
ci.setBad()
errorf("unknown response for copy query: %q", t)
}
}
// something went wrong, abort COPY before we return
b = cn.writeBuf('f')
b.string(err.Error())
cn.send(b)
for {
t, r := cn.recv1()
switch t {
case 'c', 'C', 'E':
case 'Z':
// correctly aborted, we're done
cn.processReadyForQuery(r)
return nil, err
default:
ci.setBad()
errorf("unknown response for CopyFail: %q", t)
}
}
}
func (ci *copyin) flush(buf []byte) {
// set message length (without message identifier)
binary.BigEndian.PutUint32(buf[1:], uint32(len(buf)-1))
_, err := ci.cn.c.Write(buf)
if err != nil {
panic(err)
}
}
func (ci *copyin) resploop() {
for {
var r readBuf
t, err := ci.cn.recvMessage(&r)
if err != nil {
ci.setBad()
ci.setError(err)
ci.done <- true
return
}
switch t {
case 'C':
// complete
case 'N':
// NoticeResponse
case 'Z':
ci.cn.processReadyForQuery(&r)
ci.done <- true
return
case 'E':
err := parseError(&r)
ci.setError(err)
default:
ci.setBad()
ci.setError(fmt.Errorf("unknown response during CopyIn: %q", t))
ci.done <- true
return
}
}
}
func (ci *copyin) setBad() {
ci.Lock()
ci.cn.bad = true
ci.Unlock()
}
func (ci *copyin) isBad() bool {
ci.Lock()
b := ci.cn.bad
ci.Unlock()
return b
}
func (ci *copyin) isErrorSet() bool {
ci.Lock()
isSet := (ci.err != nil)
ci.Unlock()
return isSet
}
// setError() sets ci.err if one has not been set already. Caller must not be
// holding ci.Mutex.
func (ci *copyin) setError(err error) {
ci.Lock()
if ci.err == nil {
ci.err = err
}
ci.Unlock()
}
func (ci *copyin) NumInput() int {
return -1
}
func (ci *copyin) Query(v []driver.Value) (r driver.Rows, err error) {
return nil, ErrNotSupported
}
// Exec inserts values into the COPY stream. The insert is asynchronous
// and Exec can return errors from previous Exec calls to the same
// COPY stmt.
//
// You need to call Exec(nil) to sync the COPY stream and to get any
// errors from pending data, since Stmt.Close() doesn't return errors
// to the user.
func (ci *copyin) Exec(v []driver.Value) (r driver.Result, err error) {
if ci.closed {
return nil, errCopyInClosed
}
if ci.isBad() {
return nil, driver.ErrBadConn
}
defer ci.cn.errRecover(&err)
if ci.isErrorSet() {
return nil, ci.err
}
if len(v) == 0 {
return nil, ci.Close()
}
numValues := len(v)
for i, value := range v {
ci.buffer = appendEncodedText(&ci.cn.parameterStatus, ci.buffer, value)
if i < numValues-1 {
ci.buffer = append(ci.buffer, '\t')
}
}
ci.buffer = append(ci.buffer, '\n')
if len(ci.buffer) > ciBufferFlushSize {
ci.flush(ci.buffer)
// reset buffer, keep bytes for message identifier and length
ci.buffer = ci.buffer[:5]
}
return driver.RowsAffected(0), nil
}
func (ci *copyin) Close() (err error) {
if ci.closed { // Don't do anything, we're already closed
return nil
}
ci.closed = true
if ci.isBad() {
return driver.ErrBadConn
}
defer ci.cn.errRecover(&err)
if len(ci.buffer) > 0 {
ci.flush(ci.buffer)
}
// Avoid touching the scratch buffer as resploop could be using it.
err = ci.cn.sendSimpleMessage('c')
if err != nil {
return err
}
<-ci.done
ci.cn.inCopy = false
if ci.isErrorSet() {
err = ci.err
return err
}
return nil
}

245
vendor/github.com/lib/pq/doc.go generated vendored Normal file
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/*
Package pq is a pure Go Postgres driver for the database/sql package.
In most cases clients will use the database/sql package instead of
using this package directly. For example:
import (
"database/sql"
_ "github.com/lib/pq"
)
func main() {
connStr := "user=pqgotest dbname=pqgotest sslmode=verify-full"
db, err := sql.Open("postgres", connStr)
if err != nil {
log.Fatal(err)
}
age := 21
rows, err := db.Query("SELECT name FROM users WHERE age = $1", age)
…
}
You can also connect to a database using a URL. For example:
connStr := "postgres://pqgotest:password@localhost/pqgotest?sslmode=verify-full"
db, err := sql.Open("postgres", connStr)
Connection String Parameters
Similarly to libpq, when establishing a connection using pq you are expected to
supply a connection string containing zero or more parameters.
A subset of the connection parameters supported by libpq are also supported by pq.
Additionally, pq also lets you specify run-time parameters (such as search_path or work_mem)
directly in the connection string. This is different from libpq, which does not allow
run-time parameters in the connection string, instead requiring you to supply
them in the options parameter.
For compatibility with libpq, the following special connection parameters are
supported:
* dbname - The name of the database to connect to
* user - The user to sign in as
* password - The user's password
* host - The host to connect to. Values that start with / are for unix
domain sockets. (default is localhost)
* port - The port to bind to. (default is 5432)
* sslmode - Whether or not to use SSL (default is require, this is not
the default for libpq)
* fallback_application_name - An application_name to fall back to if one isn't provided.
* connect_timeout - Maximum wait for connection, in seconds. Zero or
not specified means wait indefinitely.
* sslcert - Cert file location. The file must contain PEM encoded data.
* sslkey - Key file location. The file must contain PEM encoded data.
* sslrootcert - The location of the root certificate file. The file
must contain PEM encoded data.
Valid values for sslmode are:
* disable - No SSL
* require - Always SSL (skip verification)
* verify-ca - Always SSL (verify that the certificate presented by the
server was signed by a trusted CA)
* verify-full - Always SSL (verify that the certification presented by
the server was signed by a trusted CA and the server host name
matches the one in the certificate)
See http://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
for more information about connection string parameters.
Use single quotes for values that contain whitespace:
"user=pqgotest password='with spaces'"
A backslash will escape the next character in values:
"user=space\ man password='it\'s valid'"
Note that the connection parameter client_encoding (which sets the
text encoding for the connection) may be set but must be "UTF8",
matching with the same rules as Postgres. It is an error to provide
any other value.
In addition to the parameters listed above, any run-time parameter that can be
set at backend start time can be set in the connection string. For more
information, see
http://www.postgresql.org/docs/current/static/runtime-config.html.
Most environment variables as specified at http://www.postgresql.org/docs/current/static/libpq-envars.html
supported by libpq are also supported by pq. If any of the environment
variables not supported by pq are set, pq will panic during connection
establishment. Environment variables have a lower precedence than explicitly
provided connection parameters.
The pgpass mechanism as described in http://www.postgresql.org/docs/current/static/libpq-pgpass.html
is supported, but on Windows PGPASSFILE must be specified explicitly.
Queries
database/sql does not dictate any specific format for parameter
markers in query strings, and pq uses the Postgres-native ordinal markers,
as shown above. The same marker can be reused for the same parameter:
rows, err := db.Query(`SELECT name FROM users WHERE favorite_fruit = $1
OR age BETWEEN $2 AND $2 + 3`, "orange", 64)
pq does not support the LastInsertId() method of the Result type in database/sql.
To return the identifier of an INSERT (or UPDATE or DELETE), use the Postgres
RETURNING clause with a standard Query or QueryRow call:
var userid int
err := db.QueryRow(`INSERT INTO users(name, favorite_fruit, age)
VALUES('beatrice', 'starfruit', 93) RETURNING id`).Scan(&userid)
For more details on RETURNING, see the Postgres documentation:
http://www.postgresql.org/docs/current/static/sql-insert.html
http://www.postgresql.org/docs/current/static/sql-update.html
http://www.postgresql.org/docs/current/static/sql-delete.html
For additional instructions on querying see the documentation for the database/sql package.
Data Types
Parameters pass through driver.DefaultParameterConverter before they are handled
by this package. When the binary_parameters connection option is enabled,
[]byte values are sent directly to the backend as data in binary format.
This package returns the following types for values from the PostgreSQL backend:
- integer types smallint, integer, and bigint are returned as int64
- floating-point types real and double precision are returned as float64
- character types char, varchar, and text are returned as string
- temporal types date, time, timetz, timestamp, and timestamptz are
returned as time.Time
- the boolean type is returned as bool
- the bytea type is returned as []byte
All other types are returned directly from the backend as []byte values in text format.
Errors
pq may return errors of type *pq.Error which can be interrogated for error details:
if err, ok := err.(*pq.Error); ok {
fmt.Println("pq error:", err.Code.Name())
}
See the pq.Error type for details.
Bulk imports
You can perform bulk imports by preparing a statement returned by pq.CopyIn (or
pq.CopyInSchema) in an explicit transaction (sql.Tx). The returned statement
handle can then be repeatedly "executed" to copy data into the target table.
After all data has been processed you should call Exec() once with no arguments
to flush all buffered data. Any call to Exec() might return an error which
should be handled appropriately, but because of the internal buffering an error
returned by Exec() might not be related to the data passed in the call that
failed.
CopyIn uses COPY FROM internally. It is not possible to COPY outside of an
explicit transaction in pq.
Usage example:
txn, err := db.Begin()
if err != nil {
log.Fatal(err)
}
stmt, err := txn.Prepare(pq.CopyIn("users", "name", "age"))
if err != nil {
log.Fatal(err)
}
for _, user := range users {
_, err = stmt.Exec(user.Name, int64(user.Age))
if err != nil {
log.Fatal(err)
}
}
_, err = stmt.Exec()
if err != nil {
log.Fatal(err)
}
err = stmt.Close()
if err != nil {
log.Fatal(err)
}
err = txn.Commit()
if err != nil {
log.Fatal(err)
}
Notifications
PostgreSQL supports a simple publish/subscribe model over database
connections. See http://www.postgresql.org/docs/current/static/sql-notify.html
for more information about the general mechanism.
To start listening for notifications, you first have to open a new connection
to the database by calling NewListener. This connection can not be used for
anything other than LISTEN / NOTIFY. Calling Listen will open a "notification
channel"; once a notification channel is open, a notification generated on that
channel will effect a send on the Listener.Notify channel. A notification
channel will remain open until Unlisten is called, though connection loss might
result in some notifications being lost. To solve this problem, Listener sends
a nil pointer over the Notify channel any time the connection is re-established
following a connection loss. The application can get information about the
state of the underlying connection by setting an event callback in the call to
NewListener.
A single Listener can safely be used from concurrent goroutines, which means
that there is often no need to create more than one Listener in your
application. However, a Listener is always connected to a single database, so
you will need to create a new Listener instance for every database you want to
receive notifications in.
The channel name in both Listen and Unlisten is case sensitive, and can contain
any characters legal in an identifier (see
http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
for more information). Note that the channel name will be truncated to 63
bytes by the PostgreSQL server.
You can find a complete, working example of Listener usage at
http://godoc.org/github.com/lib/pq/example/listen.
*/
package pq

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package pq
import (
"bytes"
"database/sql/driver"
"encoding/binary"
"encoding/hex"
"errors"
"fmt"
"math"
"strconv"
"strings"
"sync"
"time"
"github.com/lib/pq/oid"
)
func binaryEncode(parameterStatus *parameterStatus, x interface{}) []byte {
switch v := x.(type) {
case []byte:
return v
default:
return encode(parameterStatus, x, oid.T_unknown)
}
}
func encode(parameterStatus *parameterStatus, x interface{}, pgtypOid oid.Oid) []byte {
switch v := x.(type) {
case int64:
return strconv.AppendInt(nil, v, 10)
case float64:
return strconv.AppendFloat(nil, v, 'f', -1, 64)
case []byte:
if pgtypOid == oid.T_bytea {
return encodeBytea(parameterStatus.serverVersion, v)
}
return v
case string:
if pgtypOid == oid.T_bytea {
return encodeBytea(parameterStatus.serverVersion, []byte(v))
}
return []byte(v)
case bool:
return strconv.AppendBool(nil, v)
case time.Time:
return formatTs(v)
default:
errorf("encode: unknown type for %T", v)
}
panic("not reached")
}
func decode(parameterStatus *parameterStatus, s []byte, typ oid.Oid, f format) interface{} {
switch f {
case formatBinary:
return binaryDecode(parameterStatus, s, typ)
case formatText:
return textDecode(parameterStatus, s, typ)
default:
panic("not reached")
}
}
func binaryDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} {
switch typ {
case oid.T_bytea:
return s
case oid.T_int8:
return int64(binary.BigEndian.Uint64(s))
case oid.T_int4:
return int64(int32(binary.BigEndian.Uint32(s)))
case oid.T_int2:
return int64(int16(binary.BigEndian.Uint16(s)))
case oid.T_uuid:
b, err := decodeUUIDBinary(s)
if err != nil {
panic(err)
}
return b
default:
errorf("don't know how to decode binary parameter of type %d", uint32(typ))
}
panic("not reached")
}
func textDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} {
switch typ {
case oid.T_char, oid.T_varchar, oid.T_text:
return string(s)
case oid.T_bytea:
b, err := parseBytea(s)
if err != nil {
errorf("%s", err)
}
return b
case oid.T_timestamptz:
return parseTs(parameterStatus.currentLocation, string(s))
case oid.T_timestamp, oid.T_date:
return parseTs(nil, string(s))
case oid.T_time:
return mustParse("15:04:05", typ, s)
case oid.T_timetz:
return mustParse("15:04:05-07", typ, s)
case oid.T_bool:
return s[0] == 't'
case oid.T_int8, oid.T_int4, oid.T_int2:
i, err := strconv.ParseInt(string(s), 10, 64)
if err != nil {
errorf("%s", err)
}
return i
case oid.T_float4, oid.T_float8:
bits := 64
if typ == oid.T_float4 {
bits = 32
}
f, err := strconv.ParseFloat(string(s), bits)
if err != nil {
errorf("%s", err)
}
return f
}
return s
}
// appendEncodedText encodes item in text format as required by COPY
// and appends to buf
func appendEncodedText(parameterStatus *parameterStatus, buf []byte, x interface{}) []byte {
switch v := x.(type) {
case int64:
return strconv.AppendInt(buf, v, 10)
case float64:
return strconv.AppendFloat(buf, v, 'f', -1, 64)
case []byte:
encodedBytea := encodeBytea(parameterStatus.serverVersion, v)
return appendEscapedText(buf, string(encodedBytea))
case string:
return appendEscapedText(buf, v)
case bool:
return strconv.AppendBool(buf, v)
case time.Time:
return append(buf, formatTs(v)...)
case nil:
return append(buf, "\\N"...)
default:
errorf("encode: unknown type for %T", v)
}
panic("not reached")
}
func appendEscapedText(buf []byte, text string) []byte {
escapeNeeded := false
startPos := 0
var c byte
// check if we need to escape
for i := 0; i < len(text); i++ {
c = text[i]
if c == '\\' || c == '\n' || c == '\r' || c == '\t' {
escapeNeeded = true
startPos = i
break
}
}
if !escapeNeeded {
return append(buf, text...)
}
// copy till first char to escape, iterate the rest
result := append(buf, text[:startPos]...)
for i := startPos; i < len(text); i++ {
c = text[i]
switch c {
case '\\':
result = append(result, '\\', '\\')
case '\n':
result = append(result, '\\', 'n')
case '\r':
result = append(result, '\\', 'r')
case '\t':
result = append(result, '\\', 't')
default:
result = append(result, c)
}
}
return result
}
func mustParse(f string, typ oid.Oid, s []byte) time.Time {
str := string(s)
// check for a 30-minute-offset timezone
if (typ == oid.T_timestamptz || typ == oid.T_timetz) &&
str[len(str)-3] == ':' {
f += ":00"
}
t, err := time.Parse(f, str)
if err != nil {
errorf("decode: %s", err)
}
return t
}
var errInvalidTimestamp = errors.New("invalid timestamp")
type timestampParser struct {
err error
}
func (p *timestampParser) expect(str string, char byte, pos int) {
if p.err != nil {
return
}
if pos+1 > len(str) {
p.err = errInvalidTimestamp
return
}
if c := str[pos]; c != char && p.err == nil {
p.err = fmt.Errorf("expected '%v' at position %v; got '%v'", char, pos, c)
}
}
func (p *timestampParser) mustAtoi(str string, begin int, end int) int {
if p.err != nil {
return 0
}
if begin < 0 || end < 0 || begin > end || end > len(str) {
p.err = errInvalidTimestamp
return 0
}
result, err := strconv.Atoi(str[begin:end])
if err != nil {
if p.err == nil {
p.err = fmt.Errorf("expected number; got '%v'", str)
}
return 0
}
return result
}
// The location cache caches the time zones typically used by the client.
type locationCache struct {
cache map[int]*time.Location
lock sync.Mutex
}
// All connections share the same list of timezones. Benchmarking shows that
// about 5% speed could be gained by putting the cache in the connection and
// losing the mutex, at the cost of a small amount of memory and a somewhat
// significant increase in code complexity.
var globalLocationCache = newLocationCache()
func newLocationCache() *locationCache {
return &locationCache{cache: make(map[int]*time.Location)}
}
// Returns the cached timezone for the specified offset, creating and caching
// it if necessary.
func (c *locationCache) getLocation(offset int) *time.Location {
c.lock.Lock()
defer c.lock.Unlock()
location, ok := c.cache[offset]
if !ok {
location = time.FixedZone("", offset)
c.cache[offset] = location
}
return location
}
var infinityTsEnabled = false
var infinityTsNegative time.Time
var infinityTsPositive time.Time
const (
infinityTsEnabledAlready = "pq: infinity timestamp enabled already"
infinityTsNegativeMustBeSmaller = "pq: infinity timestamp: negative value must be smaller (before) than positive"
)
// EnableInfinityTs controls the handling of Postgres' "-infinity" and
// "infinity" "timestamp"s.
//
// If EnableInfinityTs is not called, "-infinity" and "infinity" will return
// []byte("-infinity") and []byte("infinity") respectively, and potentially
// cause error "sql: Scan error on column index 0: unsupported driver -> Scan
// pair: []uint8 -> *time.Time", when scanning into a time.Time value.
//
// Once EnableInfinityTs has been called, all connections created using this
// driver will decode Postgres' "-infinity" and "infinity" for "timestamp",
// "timestamp with time zone" and "date" types to the predefined minimum and
// maximum times, respectively. When encoding time.Time values, any time which
// equals or precedes the predefined minimum time will be encoded to
// "-infinity". Any values at or past the maximum time will similarly be
// encoded to "infinity".
//
// If EnableInfinityTs is called with negative >= positive, it will panic.
// Calling EnableInfinityTs after a connection has been established results in
// undefined behavior. If EnableInfinityTs is called more than once, it will
// panic.
func EnableInfinityTs(negative time.Time, positive time.Time) {
if infinityTsEnabled {
panic(infinityTsEnabledAlready)
}
if !negative.Before(positive) {
panic(infinityTsNegativeMustBeSmaller)
}
infinityTsEnabled = true
infinityTsNegative = negative
infinityTsPositive = positive
}
/*
* Testing might want to toggle infinityTsEnabled
*/
func disableInfinityTs() {
infinityTsEnabled = false
}
// This is a time function specific to the Postgres default DateStyle
// setting ("ISO, MDY"), the only one we currently support. This
// accounts for the discrepancies between the parsing available with
// time.Parse and the Postgres date formatting quirks.
func parseTs(currentLocation *time.Location, str string) interface{} {
switch str {
case "-infinity":
if infinityTsEnabled {
return infinityTsNegative
}
return []byte(str)
case "infinity":
if infinityTsEnabled {
return infinityTsPositive
}
return []byte(str)
}
t, err := ParseTimestamp(currentLocation, str)
if err != nil {
panic(err)
}
return t
}
// ParseTimestamp parses Postgres' text format. It returns a time.Time in
// currentLocation iff that time's offset agrees with the offset sent from the
// Postgres server. Otherwise, ParseTimestamp returns a time.Time with the
// fixed offset offset provided by the Postgres server.
func ParseTimestamp(currentLocation *time.Location, str string) (time.Time, error) {
p := timestampParser{}
monSep := strings.IndexRune(str, '-')
// this is Gregorian year, not ISO Year
// In Gregorian system, the year 1 BC is followed by AD 1
year := p.mustAtoi(str, 0, monSep)
daySep := monSep + 3
month := p.mustAtoi(str, monSep+1, daySep)
p.expect(str, '-', daySep)
timeSep := daySep + 3
day := p.mustAtoi(str, daySep+1, timeSep)
minLen := monSep + len("01-01") + 1
isBC := strings.HasSuffix(str, " BC")
if isBC {
minLen += 3
}
var hour, minute, second int
if len(str) > minLen {
p.expect(str, ' ', timeSep)
minSep := timeSep + 3
p.expect(str, ':', minSep)
hour = p.mustAtoi(str, timeSep+1, minSep)
secSep := minSep + 3
p.expect(str, ':', secSep)
minute = p.mustAtoi(str, minSep+1, secSep)
secEnd := secSep + 3
second = p.mustAtoi(str, secSep+1, secEnd)
}
remainderIdx := monSep + len("01-01 00:00:00") + 1
// Three optional (but ordered) sections follow: the
// fractional seconds, the time zone offset, and the BC
// designation. We set them up here and adjust the other
// offsets if the preceding sections exist.
nanoSec := 0
tzOff := 0
if remainderIdx < len(str) && str[remainderIdx] == '.' {
fracStart := remainderIdx + 1
fracOff := strings.IndexAny(str[fracStart:], "-+ ")
if fracOff < 0 {
fracOff = len(str) - fracStart
}
fracSec := p.mustAtoi(str, fracStart, fracStart+fracOff)
nanoSec = fracSec * (1000000000 / int(math.Pow(10, float64(fracOff))))
remainderIdx += fracOff + 1
}
if tzStart := remainderIdx; tzStart < len(str) && (str[tzStart] == '-' || str[tzStart] == '+') {
// time zone separator is always '-' or '+' (UTC is +00)
var tzSign int
switch c := str[tzStart]; c {
case '-':
tzSign = -1
case '+':
tzSign = +1
default:
return time.Time{}, fmt.Errorf("expected '-' or '+' at position %v; got %v", tzStart, c)
}
tzHours := p.mustAtoi(str, tzStart+1, tzStart+3)
remainderIdx += 3
var tzMin, tzSec int
if remainderIdx < len(str) && str[remainderIdx] == ':' {
tzMin = p.mustAtoi(str, remainderIdx+1, remainderIdx+3)
remainderIdx += 3
}
if remainderIdx < len(str) && str[remainderIdx] == ':' {
tzSec = p.mustAtoi(str, remainderIdx+1, remainderIdx+3)
remainderIdx += 3
}
tzOff = tzSign * ((tzHours * 60 * 60) + (tzMin * 60) + tzSec)
}
var isoYear int
if isBC {
isoYear = 1 - year
remainderIdx += 3
} else {
isoYear = year
}
if remainderIdx < len(str) {
return time.Time{}, fmt.Errorf("expected end of input, got %v", str[remainderIdx:])
}
t := time.Date(isoYear, time.Month(month), day,
hour, minute, second, nanoSec,
globalLocationCache.getLocation(tzOff))
if currentLocation != nil {
// Set the location of the returned Time based on the session's
// TimeZone value, but only if the local time zone database agrees with
// the remote database on the offset.
lt := t.In(currentLocation)
_, newOff := lt.Zone()
if newOff == tzOff {
t = lt
}
}
return t, p.err
}
// formatTs formats t into a format postgres understands.
func formatTs(t time.Time) []byte {
if infinityTsEnabled {
// t <= -infinity : ! (t > -infinity)
if !t.After(infinityTsNegative) {
return []byte("-infinity")
}
// t >= infinity : ! (!t < infinity)
if !t.Before(infinityTsPositive) {
return []byte("infinity")
}
}
return FormatTimestamp(t)
}
// FormatTimestamp formats t into Postgres' text format for timestamps.
func FormatTimestamp(t time.Time) []byte {
// Need to send dates before 0001 A.D. with " BC" suffix, instead of the
// minus sign preferred by Go.
// Beware, "0000" in ISO is "1 BC", "-0001" is "2 BC" and so on
bc := false
if t.Year() <= 0 {
// flip year sign, and add 1, e.g: "0" will be "1", and "-10" will be "11"
t = t.AddDate((-t.Year())*2+1, 0, 0)
bc = true
}
b := []byte(t.Format("2006-01-02 15:04:05.999999999Z07:00"))
_, offset := t.Zone()
offset = offset % 60
if offset != 0 {
// RFC3339Nano already printed the minus sign
if offset < 0 {
offset = -offset
}
b = append(b, ':')
if offset < 10 {
b = append(b, '0')
}
b = strconv.AppendInt(b, int64(offset), 10)
}
if bc {
b = append(b, " BC"...)
}
return b
}
// Parse a bytea value received from the server. Both "hex" and the legacy
// "escape" format are supported.
func parseBytea(s []byte) (result []byte, err error) {
if len(s) >= 2 && bytes.Equal(s[:2], []byte("\\x")) {
// bytea_output = hex
s = s[2:] // trim off leading "\\x"
result = make([]byte, hex.DecodedLen(len(s)))
_, err := hex.Decode(result, s)
if err != nil {
return nil, err
}
} else {
// bytea_output = escape
for len(s) > 0 {
if s[0] == '\\' {
// escaped '\\'
if len(s) >= 2 && s[1] == '\\' {
result = append(result, '\\')
s = s[2:]
continue
}
// '\\' followed by an octal number
if len(s) < 4 {
return nil, fmt.Errorf("invalid bytea sequence %v", s)
}
r, err := strconv.ParseInt(string(s[1:4]), 8, 9)
if err != nil {
return nil, fmt.Errorf("could not parse bytea value: %s", err.Error())
}
result = append(result, byte(r))
s = s[4:]
} else {
// We hit an unescaped, raw byte. Try to read in as many as
// possible in one go.
i := bytes.IndexByte(s, '\\')
if i == -1 {
result = append(result, s...)
break
}
result = append(result, s[:i]...)
s = s[i:]
}
}
}
return result, nil
}
func encodeBytea(serverVersion int, v []byte) (result []byte) {
if serverVersion >= 90000 {
// Use the hex format if we know that the server supports it
result = make([]byte, 2+hex.EncodedLen(len(v)))
result[0] = '\\'
result[1] = 'x'
hex.Encode(result[2:], v)
} else {
// .. or resort to "escape"
for _, b := range v {
if b == '\\' {
result = append(result, '\\', '\\')
} else if b < 0x20 || b > 0x7e {
result = append(result, []byte(fmt.Sprintf("\\%03o", b))...)
} else {
result = append(result, b)
}
}
}
return result
}
// NullTime represents a time.Time that may be null. NullTime implements the
// sql.Scanner interface so it can be used as a scan destination, similar to
// sql.NullString.
type NullTime struct {
Time time.Time
Valid bool // Valid is true if Time is not NULL
}
// Scan implements the Scanner interface.
func (nt *NullTime) Scan(value interface{}) error {
nt.Time, nt.Valid = value.(time.Time)
return nil
}
// Value implements the driver Valuer interface.
func (nt NullTime) Value() (driver.Value, error) {
if !nt.Valid {
return nil, nil
}
return nt.Time, nil
}

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package pq
import (
"database/sql/driver"
"fmt"
"io"
"net"
"runtime"
)
// Error severities
const (
Efatal = "FATAL"
Epanic = "PANIC"
Ewarning = "WARNING"
Enotice = "NOTICE"
Edebug = "DEBUG"
Einfo = "INFO"
Elog = "LOG"
)
// Error represents an error communicating with the server.
//
// See http://www.postgresql.org/docs/current/static/protocol-error-fields.html for details of the fields
type Error struct {
Severity string
Code ErrorCode
Message string
Detail string
Hint string
Position string
InternalPosition string
InternalQuery string
Where string
Schema string
Table string
Column string
DataTypeName string
Constraint string
File string
Line string
Routine string
}
// ErrorCode is a five-character error code.
type ErrorCode string
// Name returns a more human friendly rendering of the error code, namely the
// "condition name".
//
// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for
// details.
func (ec ErrorCode) Name() string {
return errorCodeNames[ec]
}
// ErrorClass is only the class part of an error code.
type ErrorClass string
// Name returns the condition name of an error class. It is equivalent to the
// condition name of the "standard" error code (i.e. the one having the last
// three characters "000").
func (ec ErrorClass) Name() string {
return errorCodeNames[ErrorCode(ec+"000")]
}
// Class returns the error class, e.g. "28".
//
// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for
// details.
func (ec ErrorCode) Class() ErrorClass {
return ErrorClass(ec[0:2])
}
// errorCodeNames is a mapping between the five-character error codes and the
// human readable "condition names". It is derived from the list at
// http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html
var errorCodeNames = map[ErrorCode]string{
// Class 00 - Successful Completion
"00000": "successful_completion",
// Class 01 - Warning
"01000": "warning",
"0100C": "dynamic_result_sets_returned",
"01008": "implicit_zero_bit_padding",
"01003": "null_value_eliminated_in_set_function",
"01007": "privilege_not_granted",
"01006": "privilege_not_revoked",
"01004": "string_data_right_truncation",
"01P01": "deprecated_feature",
// Class 02 - No Data (this is also a warning class per the SQL standard)
"02000": "no_data",
"02001": "no_additional_dynamic_result_sets_returned",
// Class 03 - SQL Statement Not Yet Complete
"03000": "sql_statement_not_yet_complete",
// Class 08 - Connection Exception
"08000": "connection_exception",
"08003": "connection_does_not_exist",
"08006": "connection_failure",
"08001": "sqlclient_unable_to_establish_sqlconnection",
"08004": "sqlserver_rejected_establishment_of_sqlconnection",
"08007": "transaction_resolution_unknown",
"08P01": "protocol_violation",
// Class 09 - Triggered Action Exception
"09000": "triggered_action_exception",
// Class 0A - Feature Not Supported
"0A000": "feature_not_supported",
// Class 0B - Invalid Transaction Initiation
"0B000": "invalid_transaction_initiation",
// Class 0F - Locator Exception
"0F000": "locator_exception",
"0F001": "invalid_locator_specification",
// Class 0L - Invalid Grantor
"0L000": "invalid_grantor",
"0LP01": "invalid_grant_operation",
// Class 0P - Invalid Role Specification
"0P000": "invalid_role_specification",
// Class 0Z - Diagnostics Exception
"0Z000": "diagnostics_exception",
"0Z002": "stacked_diagnostics_accessed_without_active_handler",
// Class 20 - Case Not Found
"20000": "case_not_found",
// Class 21 - Cardinality Violation
"21000": "cardinality_violation",
// Class 22 - Data Exception
"22000": "data_exception",
"2202E": "array_subscript_error",
"22021": "character_not_in_repertoire",
"22008": "datetime_field_overflow",
"22012": "division_by_zero",
"22005": "error_in_assignment",
"2200B": "escape_character_conflict",
"22022": "indicator_overflow",
"22015": "interval_field_overflow",
"2201E": "invalid_argument_for_logarithm",
"22014": "invalid_argument_for_ntile_function",
"22016": "invalid_argument_for_nth_value_function",
"2201F": "invalid_argument_for_power_function",
"2201G": "invalid_argument_for_width_bucket_function",
"22018": "invalid_character_value_for_cast",
"22007": "invalid_datetime_format",
"22019": "invalid_escape_character",
"2200D": "invalid_escape_octet",
"22025": "invalid_escape_sequence",
"22P06": "nonstandard_use_of_escape_character",
"22010": "invalid_indicator_parameter_value",
"22023": "invalid_parameter_value",
"2201B": "invalid_regular_expression",
"2201W": "invalid_row_count_in_limit_clause",
"2201X": "invalid_row_count_in_result_offset_clause",
"22009": "invalid_time_zone_displacement_value",
"2200C": "invalid_use_of_escape_character",
"2200G": "most_specific_type_mismatch",
"22004": "null_value_not_allowed",
"22002": "null_value_no_indicator_parameter",
"22003": "numeric_value_out_of_range",
"2200H": "sequence_generator_limit_exceeded",
"22026": "string_data_length_mismatch",
"22001": "string_data_right_truncation",
"22011": "substring_error",
"22027": "trim_error",
"22024": "unterminated_c_string",
"2200F": "zero_length_character_string",
"22P01": "floating_point_exception",
"22P02": "invalid_text_representation",
"22P03": "invalid_binary_representation",
"22P04": "bad_copy_file_format",
"22P05": "untranslatable_character",
"2200L": "not_an_xml_document",
"2200M": "invalid_xml_document",
"2200N": "invalid_xml_content",
"2200S": "invalid_xml_comment",
"2200T": "invalid_xml_processing_instruction",
// Class 23 - Integrity Constraint Violation
"23000": "integrity_constraint_violation",
"23001": "restrict_violation",
"23502": "not_null_violation",
"23503": "foreign_key_violation",
"23505": "unique_violation",
"23514": "check_violation",
"23P01": "exclusion_violation",
// Class 24 - Invalid Cursor State
"24000": "invalid_cursor_state",
// Class 25 - Invalid Transaction State
"25000": "invalid_transaction_state",
"25001": "active_sql_transaction",
"25002": "branch_transaction_already_active",
"25008": "held_cursor_requires_same_isolation_level",
"25003": "inappropriate_access_mode_for_branch_transaction",
"25004": "inappropriate_isolation_level_for_branch_transaction",
"25005": "no_active_sql_transaction_for_branch_transaction",
"25006": "read_only_sql_transaction",
"25007": "schema_and_data_statement_mixing_not_supported",
"25P01": "no_active_sql_transaction",
"25P02": "in_failed_sql_transaction",
// Class 26 - Invalid SQL Statement Name
"26000": "invalid_sql_statement_name",
// Class 27 - Triggered Data Change Violation
"27000": "triggered_data_change_violation",
// Class 28 - Invalid Authorization Specification
"28000": "invalid_authorization_specification",
"28P01": "invalid_password",
// Class 2B - Dependent Privilege Descriptors Still Exist
"2B000": "dependent_privilege_descriptors_still_exist",
"2BP01": "dependent_objects_still_exist",
// Class 2D - Invalid Transaction Termination
"2D000": "invalid_transaction_termination",
// Class 2F - SQL Routine Exception
"2F000": "sql_routine_exception",
"2F005": "function_executed_no_return_statement",
"2F002": "modifying_sql_data_not_permitted",
"2F003": "prohibited_sql_statement_attempted",
"2F004": "reading_sql_data_not_permitted",
// Class 34 - Invalid Cursor Name
"34000": "invalid_cursor_name",
// Class 38 - External Routine Exception
"38000": "external_routine_exception",
"38001": "containing_sql_not_permitted",
"38002": "modifying_sql_data_not_permitted",
"38003": "prohibited_sql_statement_attempted",
"38004": "reading_sql_data_not_permitted",
// Class 39 - External Routine Invocation Exception
"39000": "external_routine_invocation_exception",
"39001": "invalid_sqlstate_returned",
"39004": "null_value_not_allowed",
"39P01": "trigger_protocol_violated",
"39P02": "srf_protocol_violated",
// Class 3B - Savepoint Exception
"3B000": "savepoint_exception",
"3B001": "invalid_savepoint_specification",
// Class 3D - Invalid Catalog Name
"3D000": "invalid_catalog_name",
// Class 3F - Invalid Schema Name
"3F000": "invalid_schema_name",
// Class 40 - Transaction Rollback
"40000": "transaction_rollback",
"40002": "transaction_integrity_constraint_violation",
"40001": "serialization_failure",
"40003": "statement_completion_unknown",
"40P01": "deadlock_detected",
// Class 42 - Syntax Error or Access Rule Violation
"42000": "syntax_error_or_access_rule_violation",
"42601": "syntax_error",
"42501": "insufficient_privilege",
"42846": "cannot_coerce",
"42803": "grouping_error",
"42P20": "windowing_error",
"42P19": "invalid_recursion",
"42830": "invalid_foreign_key",
"42602": "invalid_name",
"42622": "name_too_long",
"42939": "reserved_name",
"42804": "datatype_mismatch",
"42P18": "indeterminate_datatype",
"42P21": "collation_mismatch",
"42P22": "indeterminate_collation",
"42809": "wrong_object_type",
"42703": "undefined_column",
"42883": "undefined_function",
"42P01": "undefined_table",
"42P02": "undefined_parameter",
"42704": "undefined_object",
"42701": "duplicate_column",
"42P03": "duplicate_cursor",
"42P04": "duplicate_database",
"42723": "duplicate_function",
"42P05": "duplicate_prepared_statement",
"42P06": "duplicate_schema",
"42P07": "duplicate_table",
"42712": "duplicate_alias",
"42710": "duplicate_object",
"42702": "ambiguous_column",
"42725": "ambiguous_function",
"42P08": "ambiguous_parameter",
"42P09": "ambiguous_alias",
"42P10": "invalid_column_reference",
"42611": "invalid_column_definition",
"42P11": "invalid_cursor_definition",
"42P12": "invalid_database_definition",
"42P13": "invalid_function_definition",
"42P14": "invalid_prepared_statement_definition",
"42P15": "invalid_schema_definition",
"42P16": "invalid_table_definition",
"42P17": "invalid_object_definition",
// Class 44 - WITH CHECK OPTION Violation
"44000": "with_check_option_violation",
// Class 53 - Insufficient Resources
"53000": "insufficient_resources",
"53100": "disk_full",
"53200": "out_of_memory",
"53300": "too_many_connections",
"53400": "configuration_limit_exceeded",
// Class 54 - Program Limit Exceeded
"54000": "program_limit_exceeded",
"54001": "statement_too_complex",
"54011": "too_many_columns",
"54023": "too_many_arguments",
// Class 55 - Object Not In Prerequisite State
"55000": "object_not_in_prerequisite_state",
"55006": "object_in_use",
"55P02": "cant_change_runtime_param",
"55P03": "lock_not_available",
// Class 57 - Operator Intervention
"57000": "operator_intervention",
"57014": "query_canceled",
"57P01": "admin_shutdown",
"57P02": "crash_shutdown",
"57P03": "cannot_connect_now",
"57P04": "database_dropped",
// Class 58 - System Error (errors external to PostgreSQL itself)
"58000": "system_error",
"58030": "io_error",
"58P01": "undefined_file",
"58P02": "duplicate_file",
// Class F0 - Configuration File Error
"F0000": "config_file_error",
"F0001": "lock_file_exists",
// Class HV - Foreign Data Wrapper Error (SQL/MED)
"HV000": "fdw_error",
"HV005": "fdw_column_name_not_found",
"HV002": "fdw_dynamic_parameter_value_needed",
"HV010": "fdw_function_sequence_error",
"HV021": "fdw_inconsistent_descriptor_information",
"HV024": "fdw_invalid_attribute_value",
"HV007": "fdw_invalid_column_name",
"HV008": "fdw_invalid_column_number",
"HV004": "fdw_invalid_data_type",
"HV006": "fdw_invalid_data_type_descriptors",
"HV091": "fdw_invalid_descriptor_field_identifier",
"HV00B": "fdw_invalid_handle",
"HV00C": "fdw_invalid_option_index",
"HV00D": "fdw_invalid_option_name",
"HV090": "fdw_invalid_string_length_or_buffer_length",
"HV00A": "fdw_invalid_string_format",
"HV009": "fdw_invalid_use_of_null_pointer",
"HV014": "fdw_too_many_handles",
"HV001": "fdw_out_of_memory",
"HV00P": "fdw_no_schemas",
"HV00J": "fdw_option_name_not_found",
"HV00K": "fdw_reply_handle",
"HV00Q": "fdw_schema_not_found",
"HV00R": "fdw_table_not_found",
"HV00L": "fdw_unable_to_create_execution",
"HV00M": "fdw_unable_to_create_reply",
"HV00N": "fdw_unable_to_establish_connection",
// Class P0 - PL/pgSQL Error
"P0000": "plpgsql_error",
"P0001": "raise_exception",
"P0002": "no_data_found",
"P0003": "too_many_rows",
// Class XX - Internal Error
"XX000": "internal_error",
"XX001": "data_corrupted",
"XX002": "index_corrupted",
}
func parseError(r *readBuf) *Error {
err := new(Error)
for t := r.byte(); t != 0; t = r.byte() {
msg := r.string()
switch t {
case 'S':
err.Severity = msg
case 'C':
err.Code = ErrorCode(msg)
case 'M':
err.Message = msg
case 'D':
err.Detail = msg
case 'H':
err.Hint = msg
case 'P':
err.Position = msg
case 'p':
err.InternalPosition = msg
case 'q':
err.InternalQuery = msg
case 'W':
err.Where = msg
case 's':
err.Schema = msg
case 't':
err.Table = msg
case 'c':
err.Column = msg
case 'd':
err.DataTypeName = msg
case 'n':
err.Constraint = msg
case 'F':
err.File = msg
case 'L':
err.Line = msg
case 'R':
err.Routine = msg
}
}
return err
}
// Fatal returns true if the Error Severity is fatal.
func (err *Error) Fatal() bool {
return err.Severity == Efatal
}
// Get implements the legacy PGError interface. New code should use the fields
// of the Error struct directly.
func (err *Error) Get(k byte) (v string) {
switch k {
case 'S':
return err.Severity
case 'C':
return string(err.Code)
case 'M':
return err.Message
case 'D':
return err.Detail
case 'H':
return err.Hint
case 'P':
return err.Position
case 'p':
return err.InternalPosition
case 'q':
return err.InternalQuery
case 'W':
return err.Where
case 's':
return err.Schema
case 't':
return err.Table
case 'c':
return err.Column
case 'd':
return err.DataTypeName
case 'n':
return err.Constraint
case 'F':
return err.File
case 'L':
return err.Line
case 'R':
return err.Routine
}
return ""
}
func (err Error) Error() string {
return "pq: " + err.Message
}
// PGError is an interface used by previous versions of pq. It is provided
// only to support legacy code. New code should use the Error type.
type PGError interface {
Error() string
Fatal() bool
Get(k byte) (v string)
}
func errorf(s string, args ...interface{}) {
panic(fmt.Errorf("pq: %s", fmt.Sprintf(s, args...)))
}
// TODO(ainar-g) Rename to errorf after removing panics.
func fmterrorf(s string, args ...interface{}) error {
return fmt.Errorf("pq: %s", fmt.Sprintf(s, args...))
}
func errRecoverNoErrBadConn(err *error) {
e := recover()
if e == nil {
// Do nothing
return
}
var ok bool
*err, ok = e.(error)
if !ok {
*err = fmt.Errorf("pq: unexpected error: %#v", e)
}
}
func (c *conn) errRecover(err *error) {
e := recover()
switch v := e.(type) {
case nil:
// Do nothing
case runtime.Error:
c.bad = true
panic(v)
case *Error:
if v.Fatal() {
*err = driver.ErrBadConn
} else {
*err = v
}
case *net.OpError:
c.bad = true
*err = v
case error:
if v == io.EOF || v.(error).Error() == "remote error: handshake failure" {
*err = driver.ErrBadConn
} else {
*err = v
}
default:
c.bad = true
panic(fmt.Sprintf("unknown error: %#v", e))
}
// Any time we return ErrBadConn, we need to remember it since *Tx doesn't
// mark the connection bad in database/sql.
if *err == driver.ErrBadConn {
c.bad = true
}
}

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vendor/github.com/lib/pq/go.mod generated vendored Normal file
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module github.com/lib/pq

797
vendor/github.com/lib/pq/notify.go generated vendored Normal file
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package pq
// Package pq is a pure Go Postgres driver for the database/sql package.
// This module contains support for Postgres LISTEN/NOTIFY.
import (
"errors"
"fmt"
"sync"
"sync/atomic"
"time"
)
// Notification represents a single notification from the database.
type Notification struct {
// Process ID (PID) of the notifying postgres backend.
BePid int
// Name of the channel the notification was sent on.
Channel string
// Payload, or the empty string if unspecified.
Extra string
}
func recvNotification(r *readBuf) *Notification {
bePid := r.int32()
channel := r.string()
extra := r.string()
return &Notification{bePid, channel, extra}
}
const (
connStateIdle int32 = iota
connStateExpectResponse
connStateExpectReadyForQuery
)
type message struct {
typ byte
err error
}
var errListenerConnClosed = errors.New("pq: ListenerConn has been closed")
// ListenerConn is a low-level interface for waiting for notifications. You
// should use Listener instead.
type ListenerConn struct {
// guards cn and err
connectionLock sync.Mutex
cn *conn
err error
connState int32
// the sending goroutine will be holding this lock
senderLock sync.Mutex
notificationChan chan<- *Notification
replyChan chan message
}
// NewListenerConn creates a new ListenerConn. Use NewListener instead.
func NewListenerConn(name string, notificationChan chan<- *Notification) (*ListenerConn, error) {
return newDialListenerConn(defaultDialer{}, name, notificationChan)
}
func newDialListenerConn(d Dialer, name string, c chan<- *Notification) (*ListenerConn, error) {
cn, err := DialOpen(d, name)
if err != nil {
return nil, err
}
l := &ListenerConn{
cn: cn.(*conn),
notificationChan: c,
connState: connStateIdle,
replyChan: make(chan message, 2),
}
go l.listenerConnMain()
return l, nil
}
// We can only allow one goroutine at a time to be running a query on the
// connection for various reasons, so the goroutine sending on the connection
// must be holding senderLock.
//
// Returns an error if an unrecoverable error has occurred and the ListenerConn
// should be abandoned.
func (l *ListenerConn) acquireSenderLock() error {
// we must acquire senderLock first to avoid deadlocks; see ExecSimpleQuery
l.senderLock.Lock()
l.connectionLock.Lock()
err := l.err
l.connectionLock.Unlock()
if err != nil {
l.senderLock.Unlock()
return err
}
return nil
}
func (l *ListenerConn) releaseSenderLock() {
l.senderLock.Unlock()
}
// setState advances the protocol state to newState. Returns false if moving
// to that state from the current state is not allowed.
func (l *ListenerConn) setState(newState int32) bool {
var expectedState int32
switch newState {
case connStateIdle:
expectedState = connStateExpectReadyForQuery
case connStateExpectResponse:
expectedState = connStateIdle
case connStateExpectReadyForQuery:
expectedState = connStateExpectResponse
default:
panic(fmt.Sprintf("unexpected listenerConnState %d", newState))
}
return atomic.CompareAndSwapInt32(&l.connState, expectedState, newState)
}
// Main logic is here: receive messages from the postgres backend, forward
// notifications and query replies and keep the internal state in sync with the
// protocol state. Returns when the connection has been lost, is about to go
// away or should be discarded because we couldn't agree on the state with the
// server backend.
func (l *ListenerConn) listenerConnLoop() (err error) {
defer errRecoverNoErrBadConn(&err)
r := &readBuf{}
for {
t, err := l.cn.recvMessage(r)
if err != nil {
return err
}
switch t {
case 'A':
// recvNotification copies all the data so we don't need to worry
// about the scratch buffer being overwritten.
l.notificationChan <- recvNotification(r)
case 'T', 'D':
// only used by tests; ignore
case 'E':
// We might receive an ErrorResponse even when not in a query; it
// is expected that the server will close the connection after
// that, but we should make sure that the error we display is the
// one from the stray ErrorResponse, not io.ErrUnexpectedEOF.
if !l.setState(connStateExpectReadyForQuery) {
return parseError(r)
}
l.replyChan <- message{t, parseError(r)}
case 'C', 'I':
if !l.setState(connStateExpectReadyForQuery) {
// protocol out of sync
return fmt.Errorf("unexpected CommandComplete")
}
// ExecSimpleQuery doesn't need to know about this message
case 'Z':
if !l.setState(connStateIdle) {
// protocol out of sync
return fmt.Errorf("unexpected ReadyForQuery")
}
l.replyChan <- message{t, nil}
case 'N', 'S':
// ignore
default:
return fmt.Errorf("unexpected message %q from server in listenerConnLoop", t)
}
}
}
// This is the main routine for the goroutine receiving on the database
// connection. Most of the main logic is in listenerConnLoop.
func (l *ListenerConn) listenerConnMain() {
err := l.listenerConnLoop()
// listenerConnLoop terminated; we're done, but we still have to clean up.
// Make sure nobody tries to start any new queries by making sure the err
// pointer is set. It is important that we do not overwrite its value; a
// connection could be closed by either this goroutine or one sending on
// the connection -- whoever closes the connection is assumed to have the
// more meaningful error message (as the other one will probably get
// net.errClosed), so that goroutine sets the error we expose while the
// other error is discarded. If the connection is lost while two
// goroutines are operating on the socket, it probably doesn't matter which
// error we expose so we don't try to do anything more complex.
l.connectionLock.Lock()
if l.err == nil {
l.err = err
}
l.cn.Close()
l.connectionLock.Unlock()
// There might be a query in-flight; make sure nobody's waiting for a
// response to it, since there's not going to be one.
close(l.replyChan)
// let the listener know we're done
close(l.notificationChan)
// this ListenerConn is done
}
// Listen sends a LISTEN query to the server. See ExecSimpleQuery.
func (l *ListenerConn) Listen(channel string) (bool, error) {
return l.ExecSimpleQuery("LISTEN " + QuoteIdentifier(channel))
}
// Unlisten sends an UNLISTEN query to the server. See ExecSimpleQuery.
func (l *ListenerConn) Unlisten(channel string) (bool, error) {
return l.ExecSimpleQuery("UNLISTEN " + QuoteIdentifier(channel))
}
// UnlistenAll sends an `UNLISTEN *` query to the server. See ExecSimpleQuery.
func (l *ListenerConn) UnlistenAll() (bool, error) {
return l.ExecSimpleQuery("UNLISTEN *")
}
// Ping the remote server to make sure it's alive. Non-nil error means the
// connection has failed and should be abandoned.
func (l *ListenerConn) Ping() error {
sent, err := l.ExecSimpleQuery("")
if !sent {
return err
}
if err != nil {
// shouldn't happen
panic(err)
}
return nil
}
// Attempt to send a query on the connection. Returns an error if sending the
// query failed, and the caller should initiate closure of this connection.
// The caller must be holding senderLock (see acquireSenderLock and
// releaseSenderLock).
func (l *ListenerConn) sendSimpleQuery(q string) (err error) {
defer errRecoverNoErrBadConn(&err)
// must set connection state before sending the query
if !l.setState(connStateExpectResponse) {
panic("two queries running at the same time")
}
// Can't use l.cn.writeBuf here because it uses the scratch buffer which
// might get overwritten by listenerConnLoop.
b := &writeBuf{
buf: []byte("Q\x00\x00\x00\x00"),
pos: 1,
}
b.string(q)
l.cn.send(b)
return nil
}
// ExecSimpleQuery executes a "simple query" (i.e. one with no bindable
// parameters) on the connection. The possible return values are:
// 1) "executed" is true; the query was executed to completion on the
// database server. If the query failed, err will be set to the error
// returned by the database, otherwise err will be nil.
// 2) If "executed" is false, the query could not be executed on the remote
// server. err will be non-nil.
//
// After a call to ExecSimpleQuery has returned an executed=false value, the
// connection has either been closed or will be closed shortly thereafter, and
// all subsequently executed queries will return an error.
func (l *ListenerConn) ExecSimpleQuery(q string) (executed bool, err error) {
if err = l.acquireSenderLock(); err != nil {
return false, err
}
defer l.releaseSenderLock()
err = l.sendSimpleQuery(q)
if err != nil {
// We can't know what state the protocol is in, so we need to abandon
// this connection.
l.connectionLock.Lock()
// Set the error pointer if it hasn't been set already; see
// listenerConnMain.
if l.err == nil {
l.err = err
}
l.connectionLock.Unlock()
l.cn.c.Close()
return false, err
}
// now we just wait for a reply..
for {
m, ok := <-l.replyChan
if !ok {
// We lost the connection to server, don't bother waiting for a
// a response. err should have been set already.
l.connectionLock.Lock()
err := l.err
l.connectionLock.Unlock()
return false, err
}
switch m.typ {
case 'Z':
// sanity check
if m.err != nil {
panic("m.err != nil")
}
// done; err might or might not be set
return true, err
case 'E':
// sanity check
if m.err == nil {
panic("m.err == nil")
}
// server responded with an error; ReadyForQuery to follow
err = m.err
default:
return false, fmt.Errorf("unknown response for simple query: %q", m.typ)
}
}
}
// Close closes the connection.
func (l *ListenerConn) Close() error {
l.connectionLock.Lock()
if l.err != nil {
l.connectionLock.Unlock()
return errListenerConnClosed
}
l.err = errListenerConnClosed
l.connectionLock.Unlock()
// We can't send anything on the connection without holding senderLock.
// Simply close the net.Conn to wake up everyone operating on it.
return l.cn.c.Close()
}
// Err returns the reason the connection was closed. It is not safe to call
// this function until l.Notify has been closed.
func (l *ListenerConn) Err() error {
return l.err
}
var errListenerClosed = errors.New("pq: Listener has been closed")
// ErrChannelAlreadyOpen is returned from Listen when a channel is already
// open.
var ErrChannelAlreadyOpen = errors.New("pq: channel is already open")
// ErrChannelNotOpen is returned from Unlisten when a channel is not open.
var ErrChannelNotOpen = errors.New("pq: channel is not open")
// ListenerEventType is an enumeration of listener event types.
type ListenerEventType int
const (
// ListenerEventConnected is emitted only when the database connection
// has been initially initialized. The err argument of the callback
// will always be nil.
ListenerEventConnected ListenerEventType = iota
// ListenerEventDisconnected is emitted after a database connection has
// been lost, either because of an error or because Close has been
// called. The err argument will be set to the reason the database
// connection was lost.
ListenerEventDisconnected
// ListenerEventReconnected is emitted after a database connection has
// been re-established after connection loss. The err argument of the
// callback will always be nil. After this event has been emitted, a
// nil pq.Notification is sent on the Listener.Notify channel.
ListenerEventReconnected
// ListenerEventConnectionAttemptFailed is emitted after a connection
// to the database was attempted, but failed. The err argument will be
// set to an error describing why the connection attempt did not
// succeed.
ListenerEventConnectionAttemptFailed
)
// EventCallbackType is the event callback type. See also ListenerEventType
// constants' documentation.
type EventCallbackType func(event ListenerEventType, err error)
// Listener provides an interface for listening to notifications from a
// PostgreSQL database. For general usage information, see section
// "Notifications".
//
// Listener can safely be used from concurrently running goroutines.
type Listener struct {
// Channel for receiving notifications from the database. In some cases a
// nil value will be sent. See section "Notifications" above.
Notify chan *Notification
name string
minReconnectInterval time.Duration
maxReconnectInterval time.Duration
dialer Dialer
eventCallback EventCallbackType
lock sync.Mutex
isClosed bool
reconnectCond *sync.Cond
cn *ListenerConn
connNotificationChan <-chan *Notification
channels map[string]struct{}
}
// NewListener creates a new database connection dedicated to LISTEN / NOTIFY.
//
// name should be set to a connection string to be used to establish the
// database connection (see section "Connection String Parameters" above).
//
// minReconnectInterval controls the duration to wait before trying to
// re-establish the database connection after connection loss. After each
// consecutive failure this interval is doubled, until maxReconnectInterval is
// reached. Successfully completing the connection establishment procedure
// resets the interval back to minReconnectInterval.
//
// The last parameter eventCallback can be set to a function which will be
// called by the Listener when the state of the underlying database connection
// changes. This callback will be called by the goroutine which dispatches the
// notifications over the Notify channel, so you should try to avoid doing
// potentially time-consuming operations from the callback.
func NewListener(name string,
minReconnectInterval time.Duration,
maxReconnectInterval time.Duration,
eventCallback EventCallbackType) *Listener {
return NewDialListener(defaultDialer{}, name, minReconnectInterval, maxReconnectInterval, eventCallback)
}
// NewDialListener is like NewListener but it takes a Dialer.
func NewDialListener(d Dialer,
name string,
minReconnectInterval time.Duration,
maxReconnectInterval time.Duration,
eventCallback EventCallbackType) *Listener {
l := &Listener{
name: name,
minReconnectInterval: minReconnectInterval,
maxReconnectInterval: maxReconnectInterval,
dialer: d,
eventCallback: eventCallback,
channels: make(map[string]struct{}),
Notify: make(chan *Notification, 32),
}
l.reconnectCond = sync.NewCond(&l.lock)
go l.listenerMain()
return l
}
// NotificationChannel returns the notification channel for this listener.
// This is the same channel as Notify, and will not be recreated during the
// life time of the Listener.
func (l *Listener) NotificationChannel() <-chan *Notification {
return l.Notify
}
// Listen starts listening for notifications on a channel. Calls to this
// function will block until an acknowledgement has been received from the
// server. Note that Listener automatically re-establishes the connection
// after connection loss, so this function may block indefinitely if the
// connection can not be re-established.
//
// Listen will only fail in three conditions:
// 1) The channel is already open. The returned error will be
// ErrChannelAlreadyOpen.
// 2) The query was executed on the remote server, but PostgreSQL returned an
// error message in response to the query. The returned error will be a
// pq.Error containing the information the server supplied.
// 3) Close is called on the Listener before the request could be completed.
//
// The channel name is case-sensitive.
func (l *Listener) Listen(channel string) error {
l.lock.Lock()
defer l.lock.Unlock()
if l.isClosed {
return errListenerClosed
}
// The server allows you to issue a LISTEN on a channel which is already
// open, but it seems useful to be able to detect this case to spot for
// mistakes in application logic. If the application genuinely does't
// care, it can check the exported error and ignore it.
_, exists := l.channels[channel]
if exists {
return ErrChannelAlreadyOpen
}
if l.cn != nil {
// If gotResponse is true but error is set, the query was executed on
// the remote server, but resulted in an error. This should be
// relatively rare, so it's fine if we just pass the error to our
// caller. However, if gotResponse is false, we could not complete the
// query on the remote server and our underlying connection is about
// to go away, so we only add relname to l.channels, and wait for
// resync() to take care of the rest.
gotResponse, err := l.cn.Listen(channel)
if gotResponse && err != nil {
return err
}
}
l.channels[channel] = struct{}{}
for l.cn == nil {
l.reconnectCond.Wait()
// we let go of the mutex for a while
if l.isClosed {
return errListenerClosed
}
}
return nil
}
// Unlisten removes a channel from the Listener's channel list. Returns
// ErrChannelNotOpen if the Listener is not listening on the specified channel.
// Returns immediately with no error if there is no connection. Note that you
// might still get notifications for this channel even after Unlisten has
// returned.
//
// The channel name is case-sensitive.
func (l *Listener) Unlisten(channel string) error {
l.lock.Lock()
defer l.lock.Unlock()
if l.isClosed {
return errListenerClosed
}
// Similarly to LISTEN, this is not an error in Postgres, but it seems
// useful to distinguish from the normal conditions.
_, exists := l.channels[channel]
if !exists {
return ErrChannelNotOpen
}
if l.cn != nil {
// Similarly to Listen (see comment in that function), the caller
// should only be bothered with an error if it came from the backend as
// a response to our query.
gotResponse, err := l.cn.Unlisten(channel)
if gotResponse && err != nil {
return err
}
}
// Don't bother waiting for resync if there's no connection.
delete(l.channels, channel)
return nil
}
// UnlistenAll removes all channels from the Listener's channel list. Returns
// immediately with no error if there is no connection. Note that you might
// still get notifications for any of the deleted channels even after
// UnlistenAll has returned.
func (l *Listener) UnlistenAll() error {
l.lock.Lock()
defer l.lock.Unlock()
if l.isClosed {
return errListenerClosed
}
if l.cn != nil {
// Similarly to Listen (see comment in that function), the caller
// should only be bothered with an error if it came from the backend as
// a response to our query.
gotResponse, err := l.cn.UnlistenAll()
if gotResponse && err != nil {
return err
}
}
// Don't bother waiting for resync if there's no connection.
l.channels = make(map[string]struct{})
return nil
}
// Ping the remote server to make sure it's alive. Non-nil return value means
// that there is no active connection.
func (l *Listener) Ping() error {
l.lock.Lock()
defer l.lock.Unlock()
if l.isClosed {
return errListenerClosed
}
if l.cn == nil {
return errors.New("no connection")
}
return l.cn.Ping()
}
// Clean up after losing the server connection. Returns l.cn.Err(), which
// should have the reason the connection was lost.
func (l *Listener) disconnectCleanup() error {
l.lock.Lock()
defer l.lock.Unlock()
// sanity check; can't look at Err() until the channel has been closed
select {
case _, ok := <-l.connNotificationChan:
if ok {
panic("connNotificationChan not closed")
}
default:
panic("connNotificationChan not closed")
}
err := l.cn.Err()
l.cn.Close()
l.cn = nil
return err
}
// Synchronize the list of channels we want to be listening on with the server
// after the connection has been established.
func (l *Listener) resync(cn *ListenerConn, notificationChan <-chan *Notification) error {
doneChan := make(chan error)
go func(notificationChan <-chan *Notification) {
for channel := range l.channels {
// If we got a response, return that error to our caller as it's
// going to be more descriptive than cn.Err().
gotResponse, err := cn.Listen(channel)
if gotResponse && err != nil {
doneChan <- err
return
}
// If we couldn't reach the server, wait for notificationChan to
// close and then return the error message from the connection, as
// per ListenerConn's interface.
if err != nil {
for range notificationChan {
}
doneChan <- cn.Err()
return
}
}
doneChan <- nil
}(notificationChan)
// Ignore notifications while synchronization is going on to avoid
// deadlocks. We have to send a nil notification over Notify anyway as
// we can't possibly know which notifications (if any) were lost while
// the connection was down, so there's no reason to try and process
// these messages at all.
for {
select {
case _, ok := <-notificationChan:
if !ok {
notificationChan = nil
}
case err := <-doneChan:
return err
}
}
}
// caller should NOT be holding l.lock
func (l *Listener) closed() bool {
l.lock.Lock()
defer l.lock.Unlock()
return l.isClosed
}
func (l *Listener) connect() error {
notificationChan := make(chan *Notification, 32)
cn, err := newDialListenerConn(l.dialer, l.name, notificationChan)
if err != nil {
return err
}
l.lock.Lock()
defer l.lock.Unlock()
err = l.resync(cn, notificationChan)
if err != nil {
cn.Close()
return err
}
l.cn = cn
l.connNotificationChan = notificationChan
l.reconnectCond.Broadcast()
return nil
}
// Close disconnects the Listener from the database and shuts it down.
// Subsequent calls to its methods will return an error. Close returns an
// error if the connection has already been closed.
func (l *Listener) Close() error {
l.lock.Lock()
defer l.lock.Unlock()
if l.isClosed {
return errListenerClosed
}
if l.cn != nil {
l.cn.Close()
}
l.isClosed = true
// Unblock calls to Listen()
l.reconnectCond.Broadcast()
return nil
}
func (l *Listener) emitEvent(event ListenerEventType, err error) {
if l.eventCallback != nil {
l.eventCallback(event, err)
}
}
// Main logic here: maintain a connection to the server when possible, wait
// for notifications and emit events.
func (l *Listener) listenerConnLoop() {
var nextReconnect time.Time
reconnectInterval := l.minReconnectInterval
for {
for {
err := l.connect()
if err == nil {
break
}
if l.closed() {
return
}
l.emitEvent(ListenerEventConnectionAttemptFailed, err)
time.Sleep(reconnectInterval)
reconnectInterval *= 2
if reconnectInterval > l.maxReconnectInterval {
reconnectInterval = l.maxReconnectInterval
}
}
if nextReconnect.IsZero() {
l.emitEvent(ListenerEventConnected, nil)
} else {
l.emitEvent(ListenerEventReconnected, nil)
l.Notify <- nil
}
reconnectInterval = l.minReconnectInterval
nextReconnect = time.Now().Add(reconnectInterval)
for {
notification, ok := <-l.connNotificationChan
if !ok {
// lost connection, loop again
break
}
l.Notify <- notification
}
err := l.disconnectCleanup()
if l.closed() {
return
}
l.emitEvent(ListenerEventDisconnected, err)
time.Sleep(time.Until(nextReconnect))
}
}
func (l *Listener) listenerMain() {
l.listenerConnLoop()
close(l.Notify)
}

6
vendor/github.com/lib/pq/oid/doc.go generated vendored Normal file
View file

@ -0,0 +1,6 @@
// Package oid contains OID constants
// as defined by the Postgres server.
package oid
// Oid is a Postgres Object ID.
type Oid uint32

93
vendor/github.com/lib/pq/oid/gen.go generated vendored Normal file
View file

@ -0,0 +1,93 @@
// +build ignore
// Generate the table of OID values
// Run with 'go run gen.go'.
package main
import (
"database/sql"
"fmt"
"log"
"os"
"os/exec"
"strings"
_ "github.com/lib/pq"
)
// OID represent a postgres Object Identifier Type.
type OID struct {
ID int
Type string
}
// Name returns an upper case version of the oid type.
func (o OID) Name() string {
return strings.ToUpper(o.Type)
}
func main() {
datname := os.Getenv("PGDATABASE")
sslmode := os.Getenv("PGSSLMODE")
if datname == "" {
os.Setenv("PGDATABASE", "pqgotest")
}
if sslmode == "" {
os.Setenv("PGSSLMODE", "disable")
}
db, err := sql.Open("postgres", "")
if err != nil {
log.Fatal(err)
}
rows, err := db.Query(`
SELECT typname, oid
FROM pg_type WHERE oid < 10000
ORDER BY oid;
`)
if err != nil {
log.Fatal(err)
}
oids := make([]*OID, 0)
for rows.Next() {
var oid OID
if err = rows.Scan(&oid.Type, &oid.ID); err != nil {
log.Fatal(err)
}
oids = append(oids, &oid)
}
if err = rows.Err(); err != nil {
log.Fatal(err)
}
cmd := exec.Command("gofmt")
cmd.Stderr = os.Stderr
w, err := cmd.StdinPipe()
if err != nil {
log.Fatal(err)
}
f, err := os.Create("types.go")
if err != nil {
log.Fatal(err)
}
cmd.Stdout = f
err = cmd.Start()
if err != nil {
log.Fatal(err)
}
fmt.Fprintln(w, "// Code generated by gen.go. DO NOT EDIT.")
fmt.Fprintln(w, "\npackage oid")
fmt.Fprintln(w, "const (")
for _, oid := range oids {
fmt.Fprintf(w, "T_%s Oid = %d\n", oid.Type, oid.ID)
}
fmt.Fprintln(w, ")")
fmt.Fprintln(w, "var TypeName = map[Oid]string{")
for _, oid := range oids {
fmt.Fprintf(w, "T_%s: \"%s\",\n", oid.Type, oid.Name())
}
fmt.Fprintln(w, "}")
w.Close()
cmd.Wait()
}

343
vendor/github.com/lib/pq/oid/types.go generated vendored Normal file
View file

@ -0,0 +1,343 @@
// Code generated by gen.go. DO NOT EDIT.
package oid
const (
T_bool Oid = 16
T_bytea Oid = 17
T_char Oid = 18
T_name Oid = 19
T_int8 Oid = 20
T_int2 Oid = 21
T_int2vector Oid = 22
T_int4 Oid = 23
T_regproc Oid = 24
T_text Oid = 25
T_oid Oid = 26
T_tid Oid = 27
T_xid Oid = 28
T_cid Oid = 29
T_oidvector Oid = 30
T_pg_ddl_command Oid = 32
T_pg_type Oid = 71
T_pg_attribute Oid = 75
T_pg_proc Oid = 81
T_pg_class Oid = 83
T_json Oid = 114
T_xml Oid = 142
T__xml Oid = 143
T_pg_node_tree Oid = 194
T__json Oid = 199
T_smgr Oid = 210
T_index_am_handler Oid = 325
T_point Oid = 600
T_lseg Oid = 601
T_path Oid = 602
T_box Oid = 603
T_polygon Oid = 604
T_line Oid = 628
T__line Oid = 629
T_cidr Oid = 650
T__cidr Oid = 651
T_float4 Oid = 700
T_float8 Oid = 701
T_abstime Oid = 702
T_reltime Oid = 703
T_tinterval Oid = 704
T_unknown Oid = 705
T_circle Oid = 718
T__circle Oid = 719
T_money Oid = 790
T__money Oid = 791
T_macaddr Oid = 829
T_inet Oid = 869
T__bool Oid = 1000
T__bytea Oid = 1001
T__char Oid = 1002
T__name Oid = 1003
T__int2 Oid = 1005
T__int2vector Oid = 1006
T__int4 Oid = 1007
T__regproc Oid = 1008
T__text Oid = 1009
T__tid Oid = 1010
T__xid Oid = 1011
T__cid Oid = 1012
T__oidvector Oid = 1013
T__bpchar Oid = 1014
T__varchar Oid = 1015
T__int8 Oid = 1016
T__point Oid = 1017
T__lseg Oid = 1018
T__path Oid = 1019
T__box Oid = 1020
T__float4 Oid = 1021
T__float8 Oid = 1022
T__abstime Oid = 1023
T__reltime Oid = 1024
T__tinterval Oid = 1025
T__polygon Oid = 1027
T__oid Oid = 1028
T_aclitem Oid = 1033
T__aclitem Oid = 1034
T__macaddr Oid = 1040
T__inet Oid = 1041
T_bpchar Oid = 1042
T_varchar Oid = 1043
T_date Oid = 1082
T_time Oid = 1083
T_timestamp Oid = 1114
T__timestamp Oid = 1115
T__date Oid = 1182
T__time Oid = 1183
T_timestamptz Oid = 1184
T__timestamptz Oid = 1185
T_interval Oid = 1186
T__interval Oid = 1187
T__numeric Oid = 1231
T_pg_database Oid = 1248
T__cstring Oid = 1263
T_timetz Oid = 1266
T__timetz Oid = 1270
T_bit Oid = 1560
T__bit Oid = 1561
T_varbit Oid = 1562
T__varbit Oid = 1563
T_numeric Oid = 1700
T_refcursor Oid = 1790
T__refcursor Oid = 2201
T_regprocedure Oid = 2202
T_regoper Oid = 2203
T_regoperator Oid = 2204
T_regclass Oid = 2205
T_regtype Oid = 2206
T__regprocedure Oid = 2207
T__regoper Oid = 2208
T__regoperator Oid = 2209
T__regclass Oid = 2210
T__regtype Oid = 2211
T_record Oid = 2249
T_cstring Oid = 2275
T_any Oid = 2276
T_anyarray Oid = 2277
T_void Oid = 2278
T_trigger Oid = 2279
T_language_handler Oid = 2280
T_internal Oid = 2281
T_opaque Oid = 2282
T_anyelement Oid = 2283
T__record Oid = 2287
T_anynonarray Oid = 2776
T_pg_authid Oid = 2842
T_pg_auth_members Oid = 2843
T__txid_snapshot Oid = 2949
T_uuid Oid = 2950
T__uuid Oid = 2951
T_txid_snapshot Oid = 2970
T_fdw_handler Oid = 3115
T_pg_lsn Oid = 3220
T__pg_lsn Oid = 3221
T_tsm_handler Oid = 3310
T_anyenum Oid = 3500
T_tsvector Oid = 3614
T_tsquery Oid = 3615
T_gtsvector Oid = 3642
T__tsvector Oid = 3643
T__gtsvector Oid = 3644
T__tsquery Oid = 3645
T_regconfig Oid = 3734
T__regconfig Oid = 3735
T_regdictionary Oid = 3769
T__regdictionary Oid = 3770
T_jsonb Oid = 3802
T__jsonb Oid = 3807
T_anyrange Oid = 3831
T_event_trigger Oid = 3838
T_int4range Oid = 3904
T__int4range Oid = 3905
T_numrange Oid = 3906
T__numrange Oid = 3907
T_tsrange Oid = 3908
T__tsrange Oid = 3909
T_tstzrange Oid = 3910
T__tstzrange Oid = 3911
T_daterange Oid = 3912
T__daterange Oid = 3913
T_int8range Oid = 3926
T__int8range Oid = 3927
T_pg_shseclabel Oid = 4066
T_regnamespace Oid = 4089
T__regnamespace Oid = 4090
T_regrole Oid = 4096
T__regrole Oid = 4097
)
var TypeName = map[Oid]string{
T_bool: "BOOL",
T_bytea: "BYTEA",
T_char: "CHAR",
T_name: "NAME",
T_int8: "INT8",
T_int2: "INT2",
T_int2vector: "INT2VECTOR",
T_int4: "INT4",
T_regproc: "REGPROC",
T_text: "TEXT",
T_oid: "OID",
T_tid: "TID",
T_xid: "XID",
T_cid: "CID",
T_oidvector: "OIDVECTOR",
T_pg_ddl_command: "PG_DDL_COMMAND",
T_pg_type: "PG_TYPE",
T_pg_attribute: "PG_ATTRIBUTE",
T_pg_proc: "PG_PROC",
T_pg_class: "PG_CLASS",
T_json: "JSON",
T_xml: "XML",
T__xml: "_XML",
T_pg_node_tree: "PG_NODE_TREE",
T__json: "_JSON",
T_smgr: "SMGR",
T_index_am_handler: "INDEX_AM_HANDLER",
T_point: "POINT",
T_lseg: "LSEG",
T_path: "PATH",
T_box: "BOX",
T_polygon: "POLYGON",
T_line: "LINE",
T__line: "_LINE",
T_cidr: "CIDR",
T__cidr: "_CIDR",
T_float4: "FLOAT4",
T_float8: "FLOAT8",
T_abstime: "ABSTIME",
T_reltime: "RELTIME",
T_tinterval: "TINTERVAL",
T_unknown: "UNKNOWN",
T_circle: "CIRCLE",
T__circle: "_CIRCLE",
T_money: "MONEY",
T__money: "_MONEY",
T_macaddr: "MACADDR",
T_inet: "INET",
T__bool: "_BOOL",
T__bytea: "_BYTEA",
T__char: "_CHAR",
T__name: "_NAME",
T__int2: "_INT2",
T__int2vector: "_INT2VECTOR",
T__int4: "_INT4",
T__regproc: "_REGPROC",
T__text: "_TEXT",
T__tid: "_TID",
T__xid: "_XID",
T__cid: "_CID",
T__oidvector: "_OIDVECTOR",
T__bpchar: "_BPCHAR",
T__varchar: "_VARCHAR",
T__int8: "_INT8",
T__point: "_POINT",
T__lseg: "_LSEG",
T__path: "_PATH",
T__box: "_BOX",
T__float4: "_FLOAT4",
T__float8: "_FLOAT8",
T__abstime: "_ABSTIME",
T__reltime: "_RELTIME",
T__tinterval: "_TINTERVAL",
T__polygon: "_POLYGON",
T__oid: "_OID",
T_aclitem: "ACLITEM",
T__aclitem: "_ACLITEM",
T__macaddr: "_MACADDR",
T__inet: "_INET",
T_bpchar: "BPCHAR",
T_varchar: "VARCHAR",
T_date: "DATE",
T_time: "TIME",
T_timestamp: "TIMESTAMP",
T__timestamp: "_TIMESTAMP",
T__date: "_DATE",
T__time: "_TIME",
T_timestamptz: "TIMESTAMPTZ",
T__timestamptz: "_TIMESTAMPTZ",
T_interval: "INTERVAL",
T__interval: "_INTERVAL",
T__numeric: "_NUMERIC",
T_pg_database: "PG_DATABASE",
T__cstring: "_CSTRING",
T_timetz: "TIMETZ",
T__timetz: "_TIMETZ",
T_bit: "BIT",
T__bit: "_BIT",
T_varbit: "VARBIT",
T__varbit: "_VARBIT",
T_numeric: "NUMERIC",
T_refcursor: "REFCURSOR",
T__refcursor: "_REFCURSOR",
T_regprocedure: "REGPROCEDURE",
T_regoper: "REGOPER",
T_regoperator: "REGOPERATOR",
T_regclass: "REGCLASS",
T_regtype: "REGTYPE",
T__regprocedure: "_REGPROCEDURE",
T__regoper: "_REGOPER",
T__regoperator: "_REGOPERATOR",
T__regclass: "_REGCLASS",
T__regtype: "_REGTYPE",
T_record: "RECORD",
T_cstring: "CSTRING",
T_any: "ANY",
T_anyarray: "ANYARRAY",
T_void: "VOID",
T_trigger: "TRIGGER",
T_language_handler: "LANGUAGE_HANDLER",
T_internal: "INTERNAL",
T_opaque: "OPAQUE",
T_anyelement: "ANYELEMENT",
T__record: "_RECORD",
T_anynonarray: "ANYNONARRAY",
T_pg_authid: "PG_AUTHID",
T_pg_auth_members: "PG_AUTH_MEMBERS",
T__txid_snapshot: "_TXID_SNAPSHOT",
T_uuid: "UUID",
T__uuid: "_UUID",
T_txid_snapshot: "TXID_SNAPSHOT",
T_fdw_handler: "FDW_HANDLER",
T_pg_lsn: "PG_LSN",
T__pg_lsn: "_PG_LSN",
T_tsm_handler: "TSM_HANDLER",
T_anyenum: "ANYENUM",
T_tsvector: "TSVECTOR",
T_tsquery: "TSQUERY",
T_gtsvector: "GTSVECTOR",
T__tsvector: "_TSVECTOR",
T__gtsvector: "_GTSVECTOR",
T__tsquery: "_TSQUERY",
T_regconfig: "REGCONFIG",
T__regconfig: "_REGCONFIG",
T_regdictionary: "REGDICTIONARY",
T__regdictionary: "_REGDICTIONARY",
T_jsonb: "JSONB",
T__jsonb: "_JSONB",
T_anyrange: "ANYRANGE",
T_event_trigger: "EVENT_TRIGGER",
T_int4range: "INT4RANGE",
T__int4range: "_INT4RANGE",
T_numrange: "NUMRANGE",
T__numrange: "_NUMRANGE",
T_tsrange: "TSRANGE",
T__tsrange: "_TSRANGE",
T_tstzrange: "TSTZRANGE",
T__tstzrange: "_TSTZRANGE",
T_daterange: "DATERANGE",
T__daterange: "_DATERANGE",
T_int8range: "INT8RANGE",
T__int8range: "_INT8RANGE",
T_pg_shseclabel: "PG_SHSECLABEL",
T_regnamespace: "REGNAMESPACE",
T__regnamespace: "_REGNAMESPACE",
T_regrole: "REGROLE",
T__regrole: "_REGROLE",
}

93
vendor/github.com/lib/pq/rows.go generated vendored Normal file
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package pq
import (
"math"
"reflect"
"time"
"github.com/lib/pq/oid"
)
const headerSize = 4
type fieldDesc struct {
// The object ID of the data type.
OID oid.Oid
// The data type size (see pg_type.typlen).
// Note that negative values denote variable-width types.
Len int
// The type modifier (see pg_attribute.atttypmod).
// The meaning of the modifier is type-specific.
Mod int
}
func (fd fieldDesc) Type() reflect.Type {
switch fd.OID {
case oid.T_int8:
return reflect.TypeOf(int64(0))
case oid.T_int4:
return reflect.TypeOf(int32(0))
case oid.T_int2:
return reflect.TypeOf(int16(0))
case oid.T_varchar, oid.T_text:
return reflect.TypeOf("")
case oid.T_bool:
return reflect.TypeOf(false)
case oid.T_date, oid.T_time, oid.T_timetz, oid.T_timestamp, oid.T_timestamptz:
return reflect.TypeOf(time.Time{})
case oid.T_bytea:
return reflect.TypeOf([]byte(nil))
default:
return reflect.TypeOf(new(interface{})).Elem()
}
}
func (fd fieldDesc) Name() string {
return oid.TypeName[fd.OID]
}
func (fd fieldDesc) Length() (length int64, ok bool) {
switch fd.OID {
case oid.T_text, oid.T_bytea:
return math.MaxInt64, true
case oid.T_varchar, oid.T_bpchar:
return int64(fd.Mod - headerSize), true
default:
return 0, false
}
}
func (fd fieldDesc) PrecisionScale() (precision, scale int64, ok bool) {
switch fd.OID {
case oid.T_numeric, oid.T__numeric:
mod := fd.Mod - headerSize
precision = int64((mod >> 16) & 0xffff)
scale = int64(mod & 0xffff)
return precision, scale, true
default:
return 0, 0, false
}
}
// ColumnTypeScanType returns the value type that can be used to scan types into.
func (rs *rows) ColumnTypeScanType(index int) reflect.Type {
return rs.colTyps[index].Type()
}
// ColumnTypeDatabaseTypeName return the database system type name.
func (rs *rows) ColumnTypeDatabaseTypeName(index int) string {
return rs.colTyps[index].Name()
}
// ColumnTypeLength returns the length of the column type if the column is a
// variable length type. If the column is not a variable length type ok
// should return false.
func (rs *rows) ColumnTypeLength(index int) (length int64, ok bool) {
return rs.colTyps[index].Length()
}
// ColumnTypePrecisionScale should return the precision and scale for decimal
// types. If not applicable, ok should be false.
func (rs *rows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) {
return rs.colTyps[index].PrecisionScale()
}

169
vendor/github.com/lib/pq/ssl.go generated vendored Normal file
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package pq
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"net"
"os"
"os/user"
"path/filepath"
)
// ssl generates a function to upgrade a net.Conn based on the "sslmode" and
// related settings. The function is nil when no upgrade should take place.
func ssl(o values) (func(net.Conn) (net.Conn, error), error) {
verifyCaOnly := false
tlsConf := tls.Config{}
switch mode := o["sslmode"]; mode {
// "require" is the default.
case "", "require":
// We must skip TLS's own verification since it requires full
// verification since Go 1.3.
tlsConf.InsecureSkipVerify = true
// From http://www.postgresql.org/docs/current/static/libpq-ssl.html:
//
// Note: For backwards compatibility with earlier versions of
// PostgreSQL, if a root CA file exists, the behavior of
// sslmode=require will be the same as that of verify-ca, meaning the
// server certificate is validated against the CA. Relying on this
// behavior is discouraged, and applications that need certificate
// validation should always use verify-ca or verify-full.
if sslrootcert, ok := o["sslrootcert"]; ok {
if _, err := os.Stat(sslrootcert); err == nil {
verifyCaOnly = true
} else {
delete(o, "sslrootcert")
}
}
case "verify-ca":
// We must skip TLS's own verification since it requires full
// verification since Go 1.3.
tlsConf.InsecureSkipVerify = true
verifyCaOnly = true
case "verify-full":
tlsConf.ServerName = o["host"]
case "disable":
return nil, nil
default:
return nil, fmterrorf(`unsupported sslmode %q; only "require" (default), "verify-full", "verify-ca", and "disable" supported`, mode)
}
err := sslClientCertificates(&tlsConf, o)
if err != nil {
return nil, err
}
err = sslCertificateAuthority(&tlsConf, o)
if err != nil {
return nil, err
}
sslRenegotiation(&tlsConf)
return func(conn net.Conn) (net.Conn, error) {
client := tls.Client(conn, &tlsConf)
if verifyCaOnly {
err := sslVerifyCertificateAuthority(client, &tlsConf)
if err != nil {
return nil, err
}
}
return client, nil
}, nil
}
// sslClientCertificates adds the certificate specified in the "sslcert" and
// "sslkey" settings, or if they aren't set, from the .postgresql directory
// in the user's home directory. The configured files must exist and have
// the correct permissions.
func sslClientCertificates(tlsConf *tls.Config, o values) error {
// user.Current() might fail when cross-compiling. We have to ignore the
// error and continue without home directory defaults, since we wouldn't
// know from where to load them.
user, _ := user.Current()
// In libpq, the client certificate is only loaded if the setting is not blank.
//
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1036-L1037
sslcert := o["sslcert"]
if len(sslcert) == 0 && user != nil {
sslcert = filepath.Join(user.HomeDir, ".postgresql", "postgresql.crt")
}
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1045
if len(sslcert) == 0 {
return nil
}
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1050:L1054
if _, err := os.Stat(sslcert); os.IsNotExist(err) {
return nil
} else if err != nil {
return err
}
// In libpq, the ssl key is only loaded if the setting is not blank.
//
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L1123-L1222
sslkey := o["sslkey"]
if len(sslkey) == 0 && user != nil {
sslkey = filepath.Join(user.HomeDir, ".postgresql", "postgresql.key")
}
if len(sslkey) > 0 {
if err := sslKeyPermissions(sslkey); err != nil {
return err
}
}
cert, err := tls.LoadX509KeyPair(sslcert, sslkey)
if err != nil {
return err
}
tlsConf.Certificates = []tls.Certificate{cert}
return nil
}
// sslCertificateAuthority adds the RootCA specified in the "sslrootcert" setting.
func sslCertificateAuthority(tlsConf *tls.Config, o values) error {
// In libpq, the root certificate is only loaded if the setting is not blank.
//
// https://github.com/postgres/postgres/blob/REL9_6_2/src/interfaces/libpq/fe-secure-openssl.c#L950-L951
if sslrootcert := o["sslrootcert"]; len(sslrootcert) > 0 {
tlsConf.RootCAs = x509.NewCertPool()
cert, err := ioutil.ReadFile(sslrootcert)
if err != nil {
return err
}
if !tlsConf.RootCAs.AppendCertsFromPEM(cert) {
return fmterrorf("couldn't parse pem in sslrootcert")
}
}
return nil
}
// sslVerifyCertificateAuthority carries out a TLS handshake to the server and
// verifies the presented certificate against the CA, i.e. the one specified in
// sslrootcert or the system CA if sslrootcert was not specified.
func sslVerifyCertificateAuthority(client *tls.Conn, tlsConf *tls.Config) error {
err := client.Handshake()
if err != nil {
return err
}
certs := client.ConnectionState().PeerCertificates
opts := x509.VerifyOptions{
DNSName: client.ConnectionState().ServerName,
Intermediates: x509.NewCertPool(),
Roots: tlsConf.RootCAs,
}
for i, cert := range certs {
if i == 0 {
continue
}
opts.Intermediates.AddCert(cert)
}
_, err = certs[0].Verify(opts)
return err
}

14
vendor/github.com/lib/pq/ssl_go1.7.go generated vendored Normal file
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// +build go1.7
package pq
import "crypto/tls"
// Accept renegotiation requests initiated by the backend.
//
// Renegotiation was deprecated then removed from PostgreSQL 9.5, but
// the default configuration of older versions has it enabled. Redshift
// also initiates renegotiations and cannot be reconfigured.
func sslRenegotiation(conf *tls.Config) {
conf.Renegotiation = tls.RenegotiateFreelyAsClient
}

20
vendor/github.com/lib/pq/ssl_permissions.go generated vendored Normal file
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// +build !windows
package pq
import "os"
// sslKeyPermissions checks the permissions on user-supplied ssl key files.
// The key file should have very little access.
//
// libpq does not check key file permissions on Windows.
func sslKeyPermissions(sslkey string) error {
info, err := os.Stat(sslkey)
if err != nil {
return err
}
if info.Mode().Perm()&0077 != 0 {
return ErrSSLKeyHasWorldPermissions
}
return nil
}

8
vendor/github.com/lib/pq/ssl_renegotiation.go generated vendored Normal file
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// +build !go1.7
package pq
import "crypto/tls"
// Renegotiation is not supported by crypto/tls until Go 1.7.
func sslRenegotiation(*tls.Config) {}

9
vendor/github.com/lib/pq/ssl_windows.go generated vendored Normal file
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@ -0,0 +1,9 @@
// +build windows
package pq
// sslKeyPermissions checks the permissions on user-supplied ssl key files.
// The key file should have very little access.
//
// libpq does not check key file permissions on Windows.
func sslKeyPermissions(string) error { return nil }

76
vendor/github.com/lib/pq/url.go generated vendored Normal file
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package pq
import (
"fmt"
"net"
nurl "net/url"
"sort"
"strings"
)
// ParseURL no longer needs to be used by clients of this library since supplying a URL as a
// connection string to sql.Open() is now supported:
//
// sql.Open("postgres", "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full")
//
// It remains exported here for backwards-compatibility.
//
// ParseURL converts a url to a connection string for driver.Open.
// Example:
//
// "postgres://bob:secret@1.2.3.4:5432/mydb?sslmode=verify-full"
//
// converts to:
//
// "user=bob password=secret host=1.2.3.4 port=5432 dbname=mydb sslmode=verify-full"
//
// A minimal example:
//
// "postgres://"
//
// This will be blank, causing driver.Open to use all of the defaults
func ParseURL(url string) (string, error) {
u, err := nurl.Parse(url)
if err != nil {
return "", err
}
if u.Scheme != "postgres" && u.Scheme != "postgresql" {
return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme)
}
var kvs []string
escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`)
accrue := func(k, v string) {
if v != "" {
kvs = append(kvs, k+"="+escaper.Replace(v))
}
}
if u.User != nil {
v := u.User.Username()
accrue("user", v)
v, _ = u.User.Password()
accrue("password", v)
}
if host, port, err := net.SplitHostPort(u.Host); err != nil {
accrue("host", u.Host)
} else {
accrue("host", host)
accrue("port", port)
}
if u.Path != "" {
accrue("dbname", u.Path[1:])
}
q := u.Query()
for k := range q {
accrue(k, q.Get(k))
}
sort.Strings(kvs) // Makes testing easier (not a performance concern)
return strings.Join(kvs, " "), nil
}

24
vendor/github.com/lib/pq/user_posix.go generated vendored Normal file
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// Package pq is a pure Go Postgres driver for the database/sql package.
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris rumprun
package pq
import (
"os"
"os/user"
)
func userCurrent() (string, error) {
u, err := user.Current()
if err == nil {
return u.Username, nil
}
name := os.Getenv("USER")
if name != "" {
return name, nil
}
return "", ErrCouldNotDetectUsername
}

27
vendor/github.com/lib/pq/user_windows.go generated vendored Normal file
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// Package pq is a pure Go Postgres driver for the database/sql package.
package pq
import (
"path/filepath"
"syscall"
)
// Perform Windows user name lookup identically to libpq.
//
// The PostgreSQL code makes use of the legacy Win32 function
// GetUserName, and that function has not been imported into stock Go.
// GetUserNameEx is available though, the difference being that a
// wider range of names are available. To get the output to be the
// same as GetUserName, only the base (or last) component of the
// result is returned.
func userCurrent() (string, error) {
pw_name := make([]uint16, 128)
pwname_size := uint32(len(pw_name)) - 1
err := syscall.GetUserNameEx(syscall.NameSamCompatible, &pw_name[0], &pwname_size)
if err != nil {
return "", ErrCouldNotDetectUsername
}
s := syscall.UTF16ToString(pw_name)
u := filepath.Base(s)
return u, nil
}

23
vendor/github.com/lib/pq/uuid.go generated vendored Normal file
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package pq
import (
"encoding/hex"
"fmt"
)
// decodeUUIDBinary interprets the binary format of a uuid, returning it in text format.
func decodeUUIDBinary(src []byte) ([]byte, error) {
if len(src) != 16 {
return nil, fmt.Errorf("pq: unable to decode uuid; bad length: %d", len(src))
}
dst := make([]byte, 36)
dst[8], dst[13], dst[18], dst[23] = '-', '-', '-', '-'
hex.Encode(dst[0:], src[0:4])
hex.Encode(dst[9:], src[4:6])
hex.Encode(dst[14:], src[6:8])
hex.Encode(dst[19:], src[8:10])
hex.Encode(dst[24:], src[10:16])
return dst, nil
}

62
vendor/google.golang.org/appengine/cloudsql/cloudsql.go generated vendored Normal file
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// Copyright 2013 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
/*
Package cloudsql exposes access to Google Cloud SQL databases.
This package does not work in App Engine "flexible environment".
This package is intended for MySQL drivers to make App Engine-specific
connections. Applications should use this package through database/sql:
Select a pure Go MySQL driver that supports this package, and use sql.Open
with protocol "cloudsql" and an address of the Cloud SQL instance.
A Go MySQL driver that has been tested to work well with Cloud SQL
is the go-sql-driver:
import "database/sql"
import _ "github.com/go-sql-driver/mysql"
db, err := sql.Open("mysql", "user@cloudsql(project-id:instance-name)/dbname")
Another driver that works well with Cloud SQL is the mymysql driver:
import "database/sql"
import _ "github.com/ziutek/mymysql/godrv"
db, err := sql.Open("mymysql", "cloudsql:instance-name*dbname/user/password")
Using either of these drivers, you can perform a standard SQL query.
This example assumes there is a table named 'users' with
columns 'first_name' and 'last_name':
rows, err := db.Query("SELECT first_name, last_name FROM users")
if err != nil {
log.Errorf(ctx, "db.Query: %v", err)
}
defer rows.Close()
for rows.Next() {
var firstName string
var lastName string
if err := rows.Scan(&firstName, &lastName); err != nil {
log.Errorf(ctx, "rows.Scan: %v", err)
continue
}
log.Infof(ctx, "First: %v - Last: %v", firstName, lastName)
}
if err := rows.Err(); err != nil {
log.Errorf(ctx, "Row error: %v", err)
}
*/
package cloudsql
import (
"net"
)
// Dial connects to the named Cloud SQL instance.
func Dial(instance string) (net.Conn, error) {
return connect(instance)
}

17
vendor/google.golang.org/appengine/cloudsql/cloudsql_classic.go generated vendored Normal file
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// Copyright 2013 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build appengine
package cloudsql
import (
"net"
"appengine/cloudsql"
)
func connect(instance string) (net.Conn, error) {
return cloudsql.Dial(instance)
}

16
vendor/google.golang.org/appengine/cloudsql/cloudsql_vm.go generated vendored Normal file
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@ -0,0 +1,16 @@
// Copyright 2013 Google Inc. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
// +build !appengine
package cloudsql
import (
"errors"
"net"
)
func connect(instance string) (net.Conn, error) {
return nil, errors.New(`cloudsql: not supported in App Engine "flexible environment"`)
}