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log.go
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log.go
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//
// Copyright 2019 Insolar Technologies GmbH
//
// 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 log
import (
"github.com/insolar/insolar/configuration"
"github.com/insolar/insolar/insolar"
"github.com/insolar/insolar/log/critlog"
"github.com/insolar/insolar/log/logadapter"
"github.com/insolar/insolar/log/zlogadapter"
"github.com/pkg/errors"
stdlog "log"
"strings"
"sync"
"time"
)
// NewLog creates logger instance with particular configuration
func NewLog(cfg configuration.Log) (insolar.Logger, error) {
return NewLogExt(cfg, 0)
}
// NewLog creates logger instance with particular configuration
func NewLogExt(cfg configuration.Log, skipFrameBaselineAdjustment int8) (insolar.Logger, error) {
defaults := logadapter.DefaultLoggerSettings()
pCfg, err := logadapter.ParseLogConfigWithDefaults(cfg, defaults)
if err == nil {
var logger insolar.Logger
pCfg.SkipFrameBaselineAdjustment = skipFrameBaselineAdjustment
msgFmt := logadapter.GetDefaultLogMsgFormatter()
switch strings.ToLower(cfg.Adapter) {
case "zerolog":
logger, err = zlogadapter.NewZerologAdapter(pCfg, msgFmt)
default:
err = errors.New("unknown adapter")
}
if err == nil {
if logger != nil {
return logger, nil
}
return nil, errors.New("logger was not initialized")
}
}
return nil, errors.Wrap(err, "invalid logger config")
}
var globalLogger = struct {
mutex sync.RWMutex
output critlog.ProxyLoggerOutput
logger insolar.Logger
adapter insolar.GlobalLogAdapter
}{}
func g() insolar.EmbeddedLogger {
return GlobalLogger().Embeddable()
}
func GlobalLogger() insolar.Logger {
globalLogger.mutex.RLock()
l := globalLogger.logger
globalLogger.mutex.RUnlock()
if l != nil {
return l
}
globalLogger.mutex.Lock()
defer globalLogger.mutex.Unlock()
if globalLogger.logger == nil {
createNoConfigGlobalLogger()
}
return globalLogger.logger
}
func CopyGlobalLoggerForContext() insolar.Logger {
return GlobalLogger()
}
func SaveGlobalLogger() func() {
return SaveGlobalLoggerAndFilter(false)
}
func SaveGlobalLoggerAndFilter(includeFilter bool) func() {
globalLogger.mutex.RLock()
defer globalLogger.mutex.RUnlock()
loggerCopy := globalLogger.logger
outputCopy := globalLogger.output.GetTarget()
hasLoggerFilter, loggerFilter := getGlobalLevelFilter()
return func() {
globalLogger.mutex.Lock()
defer globalLogger.mutex.Unlock()
globalLogger.logger = loggerCopy
globalLogger.output.SetTarget(outputCopy)
if includeFilter && hasLoggerFilter {
_ = setGlobalLevelFilter(loggerFilter)
}
}
}
var globalTickerOnce sync.Once
func InitTicker() {
globalTickerOnce.Do(func() {
// as we use GlobalLogger() - the copy will follow any redirection made on the GlobalLogger()
tickLogger, err := GlobalLogger().Copy().WithCaller(insolar.NoCallerField).Build()
if err != nil {
panic(err)
}
go func() {
for {
// Tick between seconds
time.Sleep(time.Second - time.Since(time.Now().Truncate(time.Second)))
tickLogger.Debug("Logger tick")
}
}()
})
}
// GlobalLogger creates global logger with correct skipCallNumber
func createNoConfigGlobalLogger() {
holder := configuration.NewHolder().MustInit(false)
logCfg := holder.Configuration.Log
// enforce buffer-less for a non-configured logger
logCfg.BufferSize = 0
logCfg.LLBufferSize = -1
logger, err := NewLog(logCfg)
if err == nil {
err = setGlobalLogger(logger, true)
}
if err != nil || logger == nil {
stdlog.Println("warning: ", err)
panic("unable to initialize global logger with default config")
}
}
func getGlobalLogAdapter(b insolar.LoggerBuilder) insolar.GlobalLogAdapter {
if f, ok := b.(insolar.GlobalLogAdapterFactory); ok {
return f.CreateGlobalLogAdapter()
}
return nil
}
func setGlobalLogger(logger insolar.Logger, isDefault bool) error {
b := logger.Copy()
output := b.(insolar.LoggerOutputGetter).GetLoggerOutput()
b = b.WithOutput(&globalLogger.output)
if isDefault {
// TODO move to logger construction configuration?
b = b.WithCaller(insolar.CallerField)
}
adapter := getGlobalLogAdapter(b)
var err error
logger, err = b.Build()
if err != nil {
return err
}
if isDefault {
logger = logger.WithField("loginstance", "global_default")
} else {
logger = logger.WithField("loginstance", "global")
}
if globalLogger.adapter != nil && adapter != nil && globalLogger.adapter != adapter {
adapter.SetGlobalLoggerFilter(globalLogger.adapter.GetGlobalLoggerFilter())
}
globalLogger.adapter = adapter
globalLogger.logger = logger
globalLogger.output.SetTarget(output)
return nil
}
func SetGlobalLogger(logger insolar.Logger) {
globalLogger.mutex.Lock()
defer globalLogger.mutex.Unlock()
if globalLogger.logger == logger {
return
}
err := setGlobalLogger(logger, false)
if err != nil || logger == nil {
stdlog.Println("warning: ", err)
panic("unable to update global logger")
}
}
// SetLevel lets log level for global logger
func SetLevel(level string) error {
lvl, err := insolar.ParseLevel(level)
if err != nil {
return err
}
SetLogLevel(lvl)
return nil
}
func SetLogLevel(level insolar.LogLevel) {
globalLogger.mutex.Lock()
defer globalLogger.mutex.Unlock()
if globalLogger.logger == nil {
createNoConfigGlobalLogger()
}
globalLogger.logger = globalLogger.logger.Level(level)
}
func SetGlobalLevelFilter(level insolar.LogLevel) error {
globalLogger.mutex.RLock()
defer globalLogger.mutex.RUnlock()
return setGlobalLevelFilter(level)
}
func setGlobalLevelFilter(level insolar.LogLevel) error {
if globalLogger.adapter != nil {
globalLogger.adapter.SetGlobalLoggerFilter(level)
return nil
}
return errors.New("not supported")
}
func GetGlobalLevelFilter() insolar.LogLevel {
globalLogger.mutex.RLock()
defer globalLogger.mutex.RUnlock()
_, l := getGlobalLevelFilter()
return l
}
func getGlobalLevelFilter() (bool, insolar.LogLevel) {
if globalLogger.adapter != nil {
return true, globalLogger.adapter.GetGlobalLoggerFilter()
}
return false, insolar.NoLevel
}
/*
We use EmbeddedEvent functions here to avoid SkipStackFrame corrections
*/
func Debug(args ...interface{}) {
g().EmbeddedEvent(insolar.DebugLevel, args...)
}
func Debugf(format string, args ...interface{}) {
g().EmbeddedEventf(insolar.DebugLevel, format, args...)
}
func Info(args ...interface{}) {
g().EmbeddedEvent(insolar.InfoLevel, args...)
}
func Infof(format string, args ...interface{}) {
g().EmbeddedEventf(insolar.InfoLevel, format, args...)
}
func Warn(args ...interface{}) {
g().EmbeddedEvent(insolar.WarnLevel, args...)
}
func Warnf(format string, args ...interface{}) {
g().EmbeddedEventf(insolar.WarnLevel, format, args...)
}
func Error(args ...interface{}) {
g().EmbeddedEvent(insolar.ErrorLevel, args...)
}
func Errorf(format string, args ...interface{}) {
g().EmbeddedEventf(insolar.ErrorLevel, format, args...)
}
func Fatal(args ...interface{}) {
g().EmbeddedEvent(insolar.FatalLevel, args...)
}
func Fatalf(format string, args ...interface{}) {
g().EmbeddedEventf(insolar.FatalLevel, format, args...)
}
func Panic(args ...interface{}) {
g().EmbeddedEvent(insolar.PanicLevel, args...)
}
func Panicf(format string, args ...interface{}) {
g().EmbeddedEventf(insolar.PanicLevel, format, args...)
}
func Event(level insolar.LogLevel, args ...interface{}) {
g().EmbeddedEvent(level, args...)
}
func Eventf(level insolar.LogLevel, format string, args ...interface{}) {
g().EmbeddedEventf(level, format, args...)
}
func Flush() {
g().EmbeddedFlush("Global logger flush")
}