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zap.go
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zap.go
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// Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 logger
import (
"fmt"
"github.com/go-logr/logr"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
logzap "sigs.k8s.io/controller-runtime/pkg/log/zap"
)
func setCommonEncoderConfigOptions(encoderConfig *zapcore.EncoderConfig) {
encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
encoderConfig.EncodeDuration = zapcore.StringDurationEncoder
}
// MustNewZapLogger is like NewZapLogger but panics on invalid input.
func MustNewZapLogger(level string, format string, additionalOpts ...logzap.Opts) logr.Logger {
logger, err := NewZapLogger(level, format, additionalOpts...)
utilruntime.Must(err)
return logger
}
// NewZapLogger creates a new logr.Logger backed by Zap.
func NewZapLogger(level string, format string, additionalOpts ...logzap.Opts) (logr.Logger, error) {
var opts []logzap.Opts
// map our log levels to zap levels
var zapLevel zapcore.LevelEnabler
switch level {
case DebugLevel:
zapLevel = zap.DebugLevel
case ErrorLevel:
zapLevel = zap.ErrorLevel
case "", InfoLevel:
zapLevel = zap.InfoLevel
default:
return logr.Logger{}, fmt.Errorf("invalid log level %q", level)
}
opts = append(opts, logzap.Level(zapLevel))
// map our log format to encoder
switch format {
case FormatText:
opts = append(opts, logzap.ConsoleEncoder(setCommonEncoderConfigOptions))
case "", FormatJSON:
opts = append(opts, logzap.JSONEncoder(setCommonEncoderConfigOptions))
default:
return logr.Logger{}, fmt.Errorf("invalid log format %q", format)
}
return logzap.New(append(opts, additionalOpts...)...), nil
}