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logger.go
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logger.go
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package logger
import (
"fmt"
"io"
"io/ioutil"
"github.com/b2wdigital/restQL-golang/v4/pkg/restql"
"github.com/rs/zerolog"
)
var noOpLogger = New(ioutil.Discard, LogOptions{})
// LogOptions represents available logging configurations
type LogOptions struct {
Enable bool
TimestampFieldName string
TimestampFieldFormat string
Level string
Format string
}
type zeroLogger struct {
zLogger zerolog.Logger
}
// New constructs a zeroLogger instance.
func New(w io.Writer, options LogOptions) restql.Logger {
output := w
if options.Format == "pretty" {
output = zerolog.ConsoleWriter{Out: w}
}
logger := zerolog.New(output)
if len(options.TimestampFieldName) > 0 {
logger = logger.With().Timestamp().Logger()
zerolog.TimestampFieldName = options.TimestampFieldName
}
if len(options.TimestampFieldFormat) > 0 {
zerolog.TimeFieldFormat = options.TimestampFieldFormat
}
level, err := zerolog.ParseLevel(options.Level)
if err == nil {
logger = logger.Level(level)
}
if !options.Enable {
logger.Level(zerolog.Disabled)
}
return &zeroLogger{zLogger: logger}
}
func (zl *zeroLogger) Panic(msg string, fields ...interface{}) {
entry := zl.zLogger.Panic()
fieldMap := makeFieldMap(fields)
entry.Fields(fieldMap).Msg(msg)
}
func (zl *zeroLogger) Fatal(msg string, fields ...interface{}) {
fieldMap := makeFieldMap(fields)
zl.zLogger.Fatal().Fields(fieldMap).Msg(msg)
}
func (zl *zeroLogger) Error(msg string, err error, fields ...interface{}) {
fieldMap := makeFieldMap(fields)
zl.zLogger.Error().Err(err).Fields(fieldMap).Msg(msg)
}
func (zl *zeroLogger) Warn(msg string, fields ...interface{}) {
fieldMap := makeFieldMap(fields)
zl.zLogger.Warn().Fields(fieldMap).Msg(msg)
}
func (zl *zeroLogger) Info(msg string, fields ...interface{}) {
fieldMap := makeFieldMap(fields)
zl.zLogger.Info().Fields(fieldMap).Msg(msg)
}
func (zl *zeroLogger) Debug(msg string, fields ...interface{}) {
fieldMap := makeFieldMap(fields)
zl.zLogger.Debug().Fields(fieldMap).Msg(msg)
}
func (zl *zeroLogger) With(key string, value interface{}) restql.Logger {
cl := zl.zLogger.With().Str(key, fmt.Sprintf("%v", value)).Logger()
return &zeroLogger{zLogger: cl}
}
func makeFieldMap(fields []interface{}) map[string]interface{} {
fieldMap := make(map[string]interface{})
for i := 0; i <= len(fields)-2; i += 2 {
key := fmt.Sprintf("%v", fields[i])
value := fields[i+1]
fieldMap[key] = value
}
return fieldMap
}