niki/vendor/github.com/go-gorp/gorp/v3/logging.go

43 lines
1.2 KiB
Go

// Copyright 2012 James Cooper. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package gorp
import "fmt"
// GorpLogger is a deprecated alias of Logger.
type GorpLogger = Logger
// Logger is the type that gorp uses to log SQL statements.
// See DbMap.TraceOn.
type Logger interface {
Printf(format string, v ...interface{})
}
// TraceOn turns on SQL statement logging for this DbMap. After this is
// called, all SQL statements will be sent to the logger. If prefix is
// a non-empty string, it will be written to the front of all logged
// strings, which can aid in filtering log lines.
//
// Use TraceOn if you want to spy on the SQL statements that gorp
// generates.
//
// Note that the base log.Logger type satisfies Logger, but adapters can
// easily be written for other logging packages (e.g., the golang-sanctioned
// glog framework).
func (m *DbMap) TraceOn(prefix string, logger Logger) {
m.logger = logger
if prefix == "" {
m.logPrefix = prefix
} else {
m.logPrefix = fmt.Sprintf("%s ", prefix)
}
}
// TraceOff turns off tracing. It is idempotent.
func (m *DbMap) TraceOff() {
m.logger = nil
m.logPrefix = ""
}