mysql: pin the mysql dependency

vendor/github.com/hashicorp/go-hclog/int.go

@@ -45,22 +45,28 @@ func New(opts *LoggerOptions) Logger {
 		mtx = new(sync.Mutex)
 	}
 
-	return &intLogger{
-		m:      mtx,
-		json:   opts.JSONFormat,
-		caller: opts.IncludeLocation,
-		name:   opts.Name,
-		w:      bufio.NewWriter(output),
-		level:  level,
+	ret := &intLogger{
+		m:          mtx,
+		json:       opts.JSONFormat,
+		caller:     opts.IncludeLocation,
+		name:       opts.Name,
+		timeFormat: TimeFormat,
+		w:          bufio.NewWriter(output),
+		level:      level,
 	}
+	if opts.TimeFormat != "" {
+		ret.timeFormat = opts.TimeFormat
+	}
+	return ret
 }
 
 // The internal logger implementation. Internal in that it is defined entirely
 // by this package.
 type intLogger struct {
-	json   bool
-	caller bool
-	name   string
+	json       bool
+	caller     bool
+	name       string
+	timeFormat string
 
 	// this is a pointer so that it's shared by any derived loggers, since
 	// those derived loggers share the bufio.Writer as well.
@@ -132,7 +138,7 @@ func trimCallerPath(path string) string {
 
 // Non-JSON logging format function
 func (z *intLogger) log(t time.Time, level Level, msg string, args ...interface{}) {
-	z.w.WriteString(t.Format(TimeFormat))
+	z.w.WriteString(t.Format(z.timeFormat))
 	z.w.WriteByte(' ')
 
 	s, ok := _levelToBracket[level]

vendor/github.com/hashicorp/go-hclog/log.go

@@ -139,4 +139,7 @@ type LoggerOptions struct {
 
 	// Include file and line information in each log line
 	IncludeLocation bool
+
+	// The time format to use instead of the default
+	TimeFormat string
 }