syft/cmd/logger.go
2020-05-21 15:25:59 -04:00

123 lines
3.1 KiB
Go

package cmd
import (
"os"
"github.com/anchore/imgbom/imgbom"
"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 setupLoggingFromAppConfig() {
setupLogging(
logConfig{
EnableConsole: appConfig.Log.FileLocation == "" && !appConfig.Quiet,
EnableFile: appConfig.Log.FileLocation != "",
Level: appConfig.Log.LevelOpt,
FormatAsJSON: appConfig.Log.FormatAsJSON,
FileLocation: appConfig.Log.FileLocation,
},
)
}
func setupLogging(config logConfig) {
imgbom.SetLogger(newZapLogger(config))
}
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 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 (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}
// }