2020-05-21 15:54:54 -04:00

107 lines
2.6 KiB
Go

package logger
import (
"os"
"github.com/anchore/imgbom/imgbom/logger"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
type LogConfig struct {
EnableConsole bool
EnableFile bool
FormatAsJSON bool
Level zapcore.Level
FileLocation string
}
type ZapLogger struct {
sugaredLogger *zap.SugaredLogger
}
func NewZapLogger(config LogConfig) *ZapLogger {
cores := []zapcore.Core{}
if config.EnableConsole {
// note: the report should go to stdout, all logs should go to stderr
writer := zapcore.Lock(os.Stderr)
core := zapcore.NewCore(getConsoleEncoder(config), writer, config.Level)
cores = append(cores, core)
}
if config.EnableFile {
writer := zapcore.AddSync(getLogWriter(config.FileLocation))
core := zapcore.NewCore(getFileEncoder(config), writer, config.Level)
cores = append(cores, core)
}
combinedCore := zapcore.NewTee(cores...)
// AddCallerSkip skips 2 number of callers, this is important else the file that gets
// logged will always be the wrapped file (In our case logger.go)
logger := zap.New(combinedCore,
zap.AddCallerSkip(2),
zap.AddCaller(),
).Sugar()
return &ZapLogger{
sugaredLogger: logger,
}
}
func getConsoleEncoder(config LogConfig) zapcore.Encoder {
encoderConfig := zap.NewProductionEncoderConfig()
if config.FormatAsJSON {
return zapcore.NewJSONEncoder(encoderConfig)
}
encoderConfig.EncodeTime = nil
encoderConfig.EncodeCaller = nil
encoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
return zapcore.NewConsoleEncoder(encoderConfig)
}
func getFileEncoder(config LogConfig) zapcore.Encoder {
encoderConfig := zap.NewProductionEncoderConfig()
encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
if config.FormatAsJSON {
return zapcore.NewJSONEncoder(encoderConfig)
}
return zapcore.NewConsoleEncoder(encoderConfig)
}
func getLogWriter(location string) zapcore.WriteSyncer {
file, _ := os.Create(location)
return zapcore.AddSync(file)
}
func (l *ZapLogger) Debugf(format string, args ...interface{}) {
l.sugaredLogger.Debugf(format, args...)
}
func (l *ZapLogger) Infof(format string, args ...interface{}) {
l.sugaredLogger.Infof(format, args...)
}
func (l *ZapLogger) Debug(args ...interface{}) {
l.sugaredLogger.Debug(args...)
}
func (l *ZapLogger) Info(args ...interface{}) {
l.sugaredLogger.Info(args...)
}
func (l *ZapLogger) Errorf(format string, args ...interface{}) {
l.sugaredLogger.Errorf(format, args...)
}
func (l *ZapLogger) WithFields(fields map[string]interface{}) logger.Logger {
var f = make([]interface{}, 0)
for k, v := range fields {
f = append(f, k)
f = append(f, v)
}
newLogger := l.sugaredLogger.With(f...)
return &ZapLogger{newLogger}
}