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logger.go
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/
logger.go
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// Copyright 2018 Istio Authors
//
// 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 handler
import (
"errors"
"fmt"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"istio.io/istio/pkg/log"
)
// stackDepth is used
// to determine how many levels of stack to skip
// it should be 1 if logging through a struct and
// it should be 2 if logging through an interface
// If depth=1 is used with an interface, filename appears as <autogenerated>
// logger is used through the adapter.Logger interface.
const stackDepth = 2
var adapterScope = log.RegisterScope("adapters", "Messages from adapters", stackDepth)
type logger struct {
name zapcore.Field
}
func newLogger(name string) logger {
return logger{
name: zap.String("adapter", name),
}
}
// Infof from adapter.Logger.
func (l logger) Infof(format string, args ...interface{}) {
adapterScope.Info(fmt.Sprintf(format, args...), l.name)
}
// Warningf from adapter.Logger.
func (l logger) Warningf(format string, args ...interface{}) {
adapterScope.Warn(fmt.Sprintf(format, args...), l.name)
}
// Errorf from adapter.Logger.
func (l logger) Errorf(format string, args ...interface{}) error {
s := fmt.Sprintf(format, args...)
adapterScope.Error(s, l.name)
return errors.New(s)
}
// Debugf from adapter.Logger.
func (l logger) Debugf(format string, args ...interface{}) {
adapterScope.Debug(fmt.Sprintf(format, args...), l.name)
}
// InfoEnabled from adapter.Logger.
func (l logger) InfoEnabled() bool {
return adapterScope.InfoEnabled()
}
// WarnEnabled from adapter.Logger.
func (l logger) WarnEnabled() bool {
return adapterScope.WarnEnabled()
}
// ErrorEnabled from adapter.Logger.
func (l logger) ErrorEnabled() bool {
return adapterScope.ErrorEnabled()
}
// DebugEnabled from adapter.Logger.
func (l logger) DebugEnabled() bool {
return adapterScope.DebugEnabled()
}