/
log.go
64 lines (55 loc) · 1.57 KB
/
log.go
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package log
import (
"os"
"github.com/bzp2010/knockdoor/internal/config"
"github.com/pkg/errors"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
)
var (
logger *zap.SugaredLogger
)
// GetLogger to get logger instance and creates a new instance when it is not initialized
func GetLogger() *zap.SugaredLogger {
return logger
}
// SetupLogger will create a single instance of logger based on the configuration
func SetupLogger(config config.Config) error {
var (
logPath = config.Log.Path
level zap.AtomicLevel
err error
)
// convert log level to zap format
if level, err = zap.ParseAtomicLevel(config.Log.Level); err != nil {
return errors.Wrap(err, "failed to parse log level")
}
encConfig := zap.NewProductionEncoderConfig()
coreFile := zapcore.NewCore(
zapcore.NewJSONEncoder(encConfig),
zapcore.AddSync(&lumberjack.Logger{
Filename: logPath,
MaxSize: 10, // maximum size of a single log file (Mbytes)
MaxBackups: 10, // maximum number of logs to be saved
MaxAge: 30, // maximum number of days to keep logs
Compress: false,
}),
zap.LevelEnablerFunc(func(l zapcore.Level) bool {
return level.Enabled(l)
}),
)
coreConsole := zapcore.NewCore(
zapcore.NewJSONEncoder(encConfig),
zapcore.AddSync(os.Stdout),
zap.LevelEnablerFunc(func(l zapcore.Level) bool {
return level.Enabled(l)
}),
)
core := zapcore.NewTee(coreFile, coreConsole)
// build logger
zapLog := zap.New(core, zap.AddCaller(), zap.AddStacktrace(zap.ErrorLevel))
defer zapLog.Sync()
logger = zapLog.Sugar()
return nil
}