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logger.go
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logger.go
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package log
import (
"fmt"
"io"
"os"
"strings"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
const (
DefaultCallerSkip = 1
)
type Logger struct {
closer io.Closer
log *zap.Logger
sugared *zap.SugaredLogger
encodedFilename string
}
// New creates a new Logger.
func New(opts *Options) *Logger {
l := &Logger{}
// set a default filename encoder if log file is enabled
if !opts.DisableFile && len(opts.Output) > 0 && opts.FilenameEncoder == nil {
opts.FilenameEncoder = DefaultFilenameEncoder
}
var cores []zapcore.Core
// set encoders, will override the default encoder if exists
encoderConfig := l.getEncoderConfig(opts)
if !opts.DisableConsole {
var consoleLevel Level
err := consoleLevel.Set(strings.ToLower(opts.ConsoleLevel))
if err != nil {
consoleLevel = InfoLevel
}
consoleEncCfg := encoderConfig
if !opts.DisableConsoleLevel {
consoleEncCfg.LevelKey = "level"
}
if !opts.DisableConsoleTime {
consoleEncCfg.TimeKey = "time"
}
if !opts.DisableConsoleCaller {
consoleEncCfg.CallerKey = "caller"
}
// forces to use CapitalColorLevelEncoder if LevelEncoder is not set when console color is enabled
if !opts.DisableConsoleColor && opts.LevelEncoder == nil {
consoleEncCfg.EncodeLevel = zapcore.CapitalColorLevelEncoder
}
consoleLevelEnabler := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= consoleLevel
})
consoleEncoder := zapcore.NewConsoleEncoder(consoleEncCfg)
cores = append(cores, zapcore.NewCore(consoleEncoder, zapcore.Lock(os.Stdout), consoleLevelEnabler))
}
var (
syncer zapcore.WriteSyncer
closer io.Closer
encodedFilename string
)
if !opts.DisableFile {
var fileLevel Level
if opts.FileLevel == "" {
opts.FileLevel = InfoLevel.String()
}
err := fileLevel.Set(strings.ToLower(opts.FileLevel))
if err != nil {
fileLevel = InfoLevel
}
// Add level key for file log by default
encoderConfig.LevelKey = "level"
if !opts.DisableFileTime {
encoderConfig.TimeKey = "time"
}
if !opts.DisableFileCaller {
encoderConfig.CallerKey = "caller"
}
fileEncoder := zapcore.NewConsoleEncoder(encoderConfig)
if !opts.DisableFileJson {
fileEncoder = zapcore.NewJSONEncoder(encoderConfig)
}
fileLevelEnabler := zap.LevelEnablerFunc(func(lvl zapcore.Level) bool {
return lvl >= fileLevel
})
syncer, closer, encodedFilename = rollingFileEncoder(opts, opts.FilenameEncoder)
cores = append(cores, zapcore.NewCore(fileEncoder, syncer, fileLevelEnabler))
}
core := zapcore.NewTee(cores...)
// zap.WithCaller(true), need set CallerKey, otherwise will not output caller info
// zap.AddCallerSkip(1) output the right position of caller
if opts.CallerSkip < 0 {
opts.CallerSkip = DefaultCallerSkip
}
unsugared := zap.New(core, zap.WithCaller(true), zap.AddCallerSkip(opts.CallerSkip))
return &Logger{
log: unsugared,
sugared: unsugared.Sugar(),
closer: closer,
encodedFilename: encodedFilename,
}
}
func (l *Logger) DebugLogger() DebugLogger {
return l
}
func (l *Logger) InfoLogger() InfoLogger {
return l
}
func (l *Logger) Debugt(msg string, fields ...Field) {
l.log.Debug(msg, fields...)
}
func (l *Logger) Debugf(template string, args ...interface{}) {
l.sugared.Debugf(template, args...)
}
func (l *Logger) Debug(msg string, keysAndValues ...interface{}) {
l.sugared.Debugw(msg, keysAndValues...)
}
func (l *Logger) Infot(msg string, fields ...Field) {
l.log.Info(msg, fields...)
}
func (l *Logger) Infof(template string, args ...interface{}) {
l.sugared.Infof(template, args...)
}
func (l *Logger) Info(msg string, keysAndValues ...interface{}) {
l.sugared.Infow(msg, keysAndValues...)
}
func (l *Logger) Warnt(msg string, fields ...Field) {
l.log.Warn(msg, fields...)
}
func (l *Logger) Warnf(template string, args ...interface{}) {
l.sugared.Warnf(template, args...)
}
func (l *Logger) Warn(msg string, keysAndValues ...interface{}) {
l.sugared.Warnw(msg, keysAndValues...)
}
func (l *Logger) Errort(msg string, fields ...Field) {
l.log.Error(msg, fields...)
}
func (l *Logger) Errorf(template string, args ...interface{}) {
l.sugared.Errorf(template, args...)
}
func (l *Logger) Error(msg string, keysAndValues ...interface{}) {
l.sugared.Errorw(msg, keysAndValues...)
}
func (l *Logger) Panict(msg string, fields ...Field) {
l.log.Panic(msg, fields...)
}
func (l *Logger) Panicf(template string, args ...interface{}) {
l.sugared.Panicf(template, args...)
}
func (l *Logger) Panic(msg string, keysAndValues ...interface{}) {
l.sugared.Panicw(msg, keysAndValues...)
}
func (l *Logger) Fatalt(msg string, fields ...Field) {
l.log.Fatal(msg, fields...)
}
func (l *Logger) Fatalf(template string, args ...interface{}) {
l.sugared.Fatalf(template, args...)
}
func (l *Logger) Fatal(msg string, keysAndValues ...interface{}) {
l.sugared.Fatalw(msg, keysAndValues...)
}
// Print logs a message at level Print.
func (l *Logger) Print(args ...interface{}) {
l.log.Info(fmt.Sprint(args...))
}
// Println logs a message at level Print.
func (l *Logger) Println(args ...interface{}) {
l.log.Info(fmt.Sprint(args...))
}
// Printf logs a message at level Print.
func (l *Logger) Printf(format string, args ...interface{}) {
l.log.Info(fmt.Sprintf(format, args...))
}
func (l *Logger) AtLevelt(level Level, msg string, fields ...Field) {
switch level {
case DebugLevel:
l.Debugt(msg, fields...)
case PanicLevel:
l.Panict(msg, fields...)
case ErrorLevel:
l.Errort(msg, fields...)
case WarnLevel:
l.Warnt(msg, fields...)
case InfoLevel:
l.Infot(msg, fields...)
case FatalLevel:
l.Fatalt(msg, fields...)
default:
l.Warnt("unknown level", Any("level", level))
l.Warnt(msg, fields...)
}
}
func (l *Logger) AtLevel(level Level, msg string, keysAndValues ...interface{}) {
switch level {
case DebugLevel:
l.Debug(msg, keysAndValues...)
case PanicLevel:
l.Panic(msg, keysAndValues...)
case ErrorLevel:
l.Error(msg, keysAndValues...)
case WarnLevel:
l.Warn(msg, keysAndValues...)
case InfoLevel:
l.Info(msg, keysAndValues...)
case FatalLevel:
l.Fatal(msg, keysAndValues...)
default:
l.Warnt("unknown level", Any("level", level))
l.Warn(msg, keysAndValues...)
}
}
func (l *Logger) AtLevelf(level Level, msg string, args ...interface{}) {
switch level {
case DebugLevel:
l.Debugf(msg, args...)
case PanicLevel:
l.Panicf(msg, args...)
case ErrorLevel:
l.Errorf(msg, args...)
case WarnLevel:
l.Warnf(msg, args...)
case InfoLevel:
l.Infof(msg, args...)
case FatalLevel:
l.Fatalf(msg, args...)
default:
l.Warnt("unknown level", Any("level", level))
l.Warnf(msg, args...)
}
}
// Sugared returns sugared logger.
// SugaredLogger wraps the Logger to provide a more ergonomic, but slightly slower,
// API. Sugaring a Logger is quite inexpensive, so it's reasonable for a
// single application to use both Loggers and SugaredLoggers, converting
// between them on the boundaries of performance-sensitive code.
func (l *Logger) Sugared() *zap.SugaredLogger {
return l.sugared
}
// WithValues creates a child logger and adds some Field of
// context to this logger.
func (l *Logger) WithValues(fields ...Field) *Logger {
newl := l.log.With(fields...)
return &Logger{
log: newl,
sugared: newl.Sugar(),
}
}
// Flush calls the underlying Core's Sync method, flushing any buffered
// log entries. Applications should take care to call Sync before exiting.
func (l *Logger) Flush() error {
return l.log.Sync()
}
// Close implements io.Closer, and closes the current logfile of default logger.
func (l *Logger) Close() error {
// https://github.com/uber-go/zap/issues/772
_ = l.Flush()
if l.closer != nil {
return l.closer.Close()
}
return nil
}
// Check returns a CheckedEntry if logging a message at the specified level
// is enabled. It's a completely optional optimization; in high-performance
// applications, Check can help avoid allocating a slice to hold fields.
func (l *Logger) Check(lvl Level, msg string) *CheckedEntry {
return l.log.Check(lvl, msg)
}
func (l *Logger) EncodedFilename() string {
return l.encodedFilename
}
func (l *Logger) getEncoderConfig(opts *Options) zapcore.EncoderConfig {
encoderConfig := zapcore.EncoderConfig{
NameKey: "logger",
MessageKey: "msg",
StacktraceKey: "stack",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeDuration: zapcore.MillisDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
ConsoleSeparator: " ",
}
if opts.TimeEncoder != nil {
encoderConfig.EncodeTime = opts.TimeEncoder
}
if opts.LevelEncoder != nil {
encoderConfig.EncodeLevel = opts.LevelEncoder
}
if opts.CallerEncoder != nil {
encoderConfig.EncodeCaller = opts.CallerEncoder
}
return encoderConfig
}