github.com/pingcap/br@v5.3.0-alpha.0.20220125034240-ec59c7b6ce30+incompatible/pkg/lightning/log/testlogger.go (about)

     1  // Copyright 2019 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package log
    15  
    16  import (
    17  	"go.uber.org/zap"
    18  	"go.uber.org/zap/zapcore"
    19  	"go.uber.org/zap/zaptest"
    20  )
    21  
    22  // MakeTestLogger creates a Logger instance which produces JSON logs.
    23  func MakeTestLogger(opts ...zap.Option) (Logger, *zaptest.Buffer) {
    24  	buffer := new(zaptest.Buffer)
    25  	logger := zap.New(zapcore.NewCore(
    26  		zapcore.NewJSONEncoder(zapcore.EncoderConfig{
    27  			LevelKey:       "$lvl",
    28  			MessageKey:     "$msg",
    29  			EncodeLevel:    zapcore.CapitalLevelEncoder,
    30  			EncodeDuration: zapcore.StringDurationEncoder,
    31  		}),
    32  		buffer,
    33  		zap.DebugLevel,
    34  	), opts...)
    35  	return Logger{Logger: logger}, buffer
    36  }