/
logger.go
165 lines (140 loc) · 3.91 KB
/
logger.go
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// Copyright 2020 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package zaplogger
import (
"sync/atomic"
"github.com/casbin/casbin/v2/log"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
var _ log.Logger = &Logger{}
// Logger is the implementation for a Logger using zap.
type Logger struct {
enabled int32
logger *zap.Logger
}
type stringMatrix [][]string
func (matrix stringMatrix) MarshalLogArray(enc zapcore.ArrayEncoder) error {
for _, vector := range matrix {
if err := enc.AppendArray(zapcore.ArrayMarshalerFunc(func(enc zapcore.ArrayEncoder) error {
for _, item := range vector {
enc.AppendString(item)
}
return nil
})); err != nil {
return err
}
}
return nil
}
// NewLogger is the default constructor for Logger.
// Params : enabled, jsonEncode
// enabled initialize recording state, jsonEncode initialize log whether structured as json.
func NewLogger(enabled, jsonEncode bool) *Logger {
encoderConfig := zapcore.EncoderConfig{
TimeKey: "time",
LevelKey: "level",
MessageKey: "event",
EncodeLevel: zapcore.LowercaseLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.SecondsDurationEncoder,
}
atomicLevel := zap.NewAtomicLevel()
atomicLevel.SetLevel(zap.InfoLevel) // default log level: info
encodeMethod := "json"
if !jsonEncode {
encodeMethod = "console"
}
config := zap.Config{
Level: atomicLevel,
Development: true,
Encoding: encodeMethod,
EncoderConfig: encoderConfig,
OutputPaths: []string{"stdout"},
ErrorOutputPaths: []string{"stderr"},
}
zapLogger, err := config.Build()
if err != nil {
panic(err)
}
return NewLoggerByZap(zapLogger, enabled)
}
// NewLoggerByZap creates zap-logger by an existing zap instance.
func NewLoggerByZap(zapLogger *zap.Logger, enabled bool) *Logger {
logger := &Logger{
logger: zapLogger,
}
logger.EnableLog(enabled)
return logger
}
func (l *Logger) EnableLog(enable bool) {
var enab int32
if enable {
enab = 1
}
atomic.StoreInt32(&l.enabled, enab)
}
func (l *Logger) IsEnabled() bool {
return atomic.LoadInt32(&l.enabled) == 1
}
func (l *Logger) LogModel(model [][]string) {
if !l.IsEnabled() {
return
}
l.logger.Info("LogModel", zap.Array("model", stringMatrix(model)))
}
func (l *Logger) LogEnforce(matcher string, request []interface{}, result bool, explains [][]string) {
if !l.IsEnabled() {
return
}
l.logger.Info(
"LogEnforce",
zap.String("matcher", matcher),
zap.Array("request", zapcore.ArrayMarshalerFunc(func(enc zapcore.ArrayEncoder) error {
for _, v := range request {
if err := enc.AppendReflected(v); err != nil {
return err
}
}
return nil
})),
zap.Bool("result", result),
zap.Array("explains", stringMatrix(explains)),
)
}
func (l *Logger) LogPolicy(policy map[string][][]string) {
if !l.IsEnabled() {
return
}
l.logger.Info("LogPolicy", zap.Object("policy", zapcore.ObjectMarshalerFunc(func(enc zapcore.ObjectEncoder) error {
for k, v := range policy {
if err := enc.AddArray(k, stringMatrix(v)); err != nil {
return err
}
}
return nil
})))
}
func (l *Logger) LogRole(roles []string) {
if !l.IsEnabled() {
return
}
l.logger.Info("LogRole", zap.Strings("roles", roles))
}
func (l *Logger) LogError(err error, msg ...string) {
if !l.IsEnabled() {
return
}
l.logger.Error("LogError", zap.Error(err), zap.Strings("msg", msg))
}