Bump version to 5.11.0

vendor/github.com/microsoft/go-mssqldb/log.go

@@ -0,0 +1,71 @@
+package mssql
+
+import (
+	"context"
+
+	"github.com/microsoft/go-mssqldb/msdsn"
+)
+
+const (
+	logErrors      = uint64(msdsn.LogErrors)
+	logMessages    = uint64(msdsn.LogMessages)
+	logRows        = uint64(msdsn.LogRows)
+	logSQL         = uint64(msdsn.LogSQL)
+	logParams      = uint64(msdsn.LogParams)
+	logTransaction = uint64(msdsn.LogTransaction)
+	logDebug       = uint64(msdsn.LogDebug)
+	logRetries     = uint64(msdsn.LogRetries)
+)
+
+// Logger is an interface you can implement to have the go-msqldb
+// driver automatically log detailed information on your behalf
+type Logger interface {
+	Printf(format string, v ...interface{})
+	Println(v ...interface{})
+}
+
+// ContextLogger is an interface that provides more information
+// than Logger and lets you log messages yourself. This gives you
+// more information to log (e.g. trace IDs in the context), more
+// control over the logging activity (e.g. log it, trace it, or
+// log and trace it, depending on the class of message), and lets
+// you log in exactly the format you want.
+type ContextLogger interface {
+	Log(ctx context.Context, category msdsn.Log, msg string)
+}
+
+// optionalLogger implements the ContextLogger interface with
+// a default "do nothing" behavior that can be overridden by an
+// optional ContextLogger supplied by the user.
+type optionalLogger struct {
+	logger ContextLogger
+}
+
+// Log does nothing unless the user has specified an optional
+// ContextLogger to override the "do nothing" default behavior.
+func (o optionalLogger) Log(ctx context.Context, category msdsn.Log, msg string) {
+	if nil != o.logger {
+		o.logger.Log(ctx, category, msg)
+	}
+}
+
+// loggerAdapter converts Logger interfaces into ContextLogger
+// interfaces. It provides backwards compatibility.
+type loggerAdapter struct {
+	logger Logger
+}
+
+// Log passes the message to the underlying Logger interface's
+// Println function, emulating the orignal Logger behavior.
+func (la loggerAdapter) Log(_ context.Context, category msdsn.Log, msg string) {
+
+	// Add prefix for certain categories
+	switch category {
+	case msdsn.LogErrors:
+		msg = "ERROR: " + msg
+	case msdsn.LogRetries:
+		msg = "RETRY: " + msg
+	}
+
+	la.logger.Println(msg)
+}