/
logger.go
111 lines (92 loc) · 2.78 KB
/
logger.go
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package logger
import (
"fmt"
"runtime"
"strings"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
type Logger struct {
*zap.Logger
ZapLogLevel zapcore.Level
}
var logger *Logger // Singleton instance
func GetLogger() *Logger {
var err error
if logger == nil {
logger, err = NewLogger(GetConfig().Level)
if err != nil {
panic(err)
}
}
return logger
}
func (l *Logger) Print(v ...interface{}) {
str := fmt.Sprintf("[sarama] %s", fmt.Sprint(v...))
l.forceLog(zapcore.DebugLevel, str)
}
func (l *Logger) Printf(format string, v ...interface{}) {
str := fmt.Sprintf("[sarama] %s", fmt.Sprintf(format, v...))
l.forceLog(zapcore.DebugLevel, str)
}
func (l *Logger) Println(v ...interface{}) {
str := fmt.Sprintf("[sarama] %s", fmt.Sprint(v...))
l.forceLog(zapcore.DebugLevel, str)
}
func (l *Logger) forceLog(level zapcore.Level, msg string, logArgs ...zap.Field) {
// We need a "checked entry" do do the Write(), so checking that the logger is
// set to a level (ErrorLevel) that supports the least amount of logging will
// guarantee a CheckedEntry is returned. Override fields in the returned
// CheckedEntry to cause it to produce the correct log level output
if ce := l.Logger.Check(zapcore.ErrorLevel, msg); ce != nil {
// Since the zap logger is wrappered, bump the call stack setting to
// log the correct caller's file and line number
ce.Caller = zapcore.NewEntryCaller(runtime.Caller(2))
ce.Level = level
ce.Write(logArgs...)
}
}
func NewLogger(logLevel string) (*Logger, error) {
atomicLevel, err := getLogLevel(logLevel)
if err != nil {
return nil, err
}
zapLogLevel, err := MakeZapLogLevel(logLevel)
if err != nil {
return nil, err
}
config := zap.NewProductionConfig()
config.Level = atomicLevel
config.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
config.EncoderConfig.MessageKey = "message" // Elasticsearch message field name, zap default is "msg"
config.DisableStacktrace = true
logger, err := config.Build()
if err != nil {
return nil, err
}
return &Logger{logger, zapLogLevel}, nil
}
func getLogLevel(logLevel string) (zap.AtomicLevel, error) {
switch strings.ToLower(logLevel) {
case "", "debug":
return zap.NewAtomicLevelAt(zap.DebugLevel), nil
case "info":
return zap.NewAtomicLevelAt(zap.InfoLevel), nil
case "warn":
return zap.NewAtomicLevelAt(zap.WarnLevel), nil
case "error":
return zap.NewAtomicLevelAt(zap.ErrorLevel), nil
case "fatal":
return zap.NewAtomicLevelAt(zap.FatalLevel), nil
default:
return zap.NewAtomicLevelAt(zap.DebugLevel), invalidLogLevel(logLevel)
}
}
func invalidLogLevel(logLevel string) error {
return fmt.Errorf("Invalid log level %q", logLevel)
}
func MakeZapLogLevel(logLevel string) (zapcore.Level, error) {
var l zapcore.Level
err := l.UnmarshalText([]byte(logLevel))
return l, err
}