feat(db): upgrade auto-backup backup and rollback support EE-867 EE-1158 (#5341)

* backport migration EE code structure

* filesystem copy function

* set db status to updating before migration - reset on completion

* support for auto-backup on version upgrade

* - rollback cli flag support (with confirmation)
- rollback implementation backport from EE

* removed edition as it is not required in CE

* migrated test datastore from bolttest to bolt package to make it usable for testing

* backported failsafe migration

* - backported tests from EE
- refactored tests to use test datastore

* test store implementing datastore interface

* addressed PR issues/improvements

* refactor test

* added backup file removal error logging

* resolved conflicts, updated code

* fixed missing bolttest package - migrated to bolt

* feat(migration): wrap migration errors to provide context for failure EE-1742 (#5711)

* feat(migrator): wrap errors to provide more context to failures EE-1742

* add overall failure back in. diff log file

* updated helm tests pointing to correct teststore

Co-authored-by: Matt Hook <hookenz@gmail.com>

api/cli/cli.go

@@ -47,6 +47,7 @@ func (*Service) ParseFlags(version string) (*portainer.CLIFlags, error) {
 		SSL:                       kingpin.Flag("ssl", "Secure Portainer instance using SSL (deprecated)").Default(defaultSSL).Bool(),
 		SSLCert:                   kingpin.Flag("sslcert", "Path to the SSL certificate used to secure the Portainer instance").String(),
 		SSLKey:                    kingpin.Flag("sslkey", "Path to the SSL key used to secure the Portainer instance").String(),
+		Rollback:                  kingpin.Flag("rollback", "Rollback the database store to the previous version").Bool(),
 		SnapshotInterval:          kingpin.Flag("snapshot-interval", "Duration between each environment snapshot job").Default(defaultSnapshotInterval).String(),
 		AdminPassword:             kingpin.Flag("admin-password", "Hashed admin password").String(),
 		AdminPasswordFile:         kingpin.Flag("admin-password-file", "Path to the file containing the password for the admin user").String(),

api/cli/confirm.go

@@ -0,0 +1,24 @@
+package cli
+
+import (
+	"bufio"
+	"log"
+	"os"
+	"strings"
+)
+
+// Confirm starts a rollback db cli application
+func Confirm(message string) (bool, error) {
+	log.Printf("%s [y/N]", message)
+
+	reader := bufio.NewReader(os.Stdin)
+	answer, err := reader.ReadString('\n')
+	if err != nil {
+		return false, err
+	}
+	answer = strings.Replace(answer, "\n", "", -1)
+	answer = strings.ToLower(answer)
+
+	return answer == "y" || answer == "yes", nil
+
+}