/
writer.go
110 lines (97 loc) · 2.34 KB
/
writer.go
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// Copyright 2022 IBM Corp.
// SPDX-License-Identifier: Apache-2.0
package logging
import (
"errors"
"fmt"
"github.com/go-logr/logr"
"github.com/rs/zerolog"
)
// Writer implements LogSink interface using zerolog.Logger
const SKIP = 2
type Writer struct {
Log *zerolog.Logger
Verbosity zerolog.Level
Depth int
Caller string
}
// ignoring CallDepth
func (w *Writer) Init(ri logr.RuntimeInfo) {
w.Depth = ri.CallDepth
}
func (w *Writer) Enabled(lvl int) bool {
return lvl >= int(w.Verbosity)
}
func (w *Writer) WithValues(keysAndValues ...interface{}) logr.LogSink {
values, err := handleFields(keysAndValues)
if err != nil {
w.Log.Error().Msg(err.Error())
return w
}
l := w.Log.With()
for key, val := range values {
l = l.Str(key, val)
}
newLog := l.Logger()
return &Writer{Log: &newLog, Verbosity: w.Verbosity, Caller: w.Caller}
}
func (w *Writer) Info(lvl int, msg string, keysAndVals ...interface{}) {
if !w.Enabled(lvl) {
return
}
values, err := handleFields(keysAndVals)
if err != nil {
w.Log.Error().Msg(err.Error())
}
l := w.Log.Info()
if w.Caller != "" {
l = l.Str(SETUP, w.Caller)
}
for key, val := range values {
l = l.Str(key, val)
}
l.CallerSkipFrame(w.Depth + SKIP).Msg(msg)
}
func (w *Writer) Error(err error, msg string, keysAndVals ...interface{}) {
values, inputErr := handleFields(keysAndVals)
if inputErr != nil {
w.Log.Error().Msg(inputErr.Error())
}
l := w.Log.Error().Err(err)
if w.Caller != "" {
l = l.Str(SETUP, w.Caller)
}
for key, val := range values {
l = l.Str(key, val)
}
l.CallerSkipFrame(w.Depth + SKIP).Msg(msg)
}
func (w *Writer) WithName(name string) logr.LogSink {
newLogger := *w
if w.Caller == "" {
newLogger.Caller = name
} else {
newLogger.Caller += "." + name
}
return &newLogger
}
func (w *Writer) WithCallDepth(depth int) logr.LogSink {
newLogger := *w
newLogger.Depth = depth
return &newLogger
}
func handleFields(args []interface{}) (map[string]string, error) {
if len(args)%2 == 1 {
return nil, errors.New("odd number of arguments passed as key-value pairs to the logger")
}
res := map[string]string{}
for i := 0; i < len(args); i += 2 {
keyStr, isString := args[i].(string)
if !isString {
return nil, errors.New("non-string type passed as a key to the logger")
}
valStr := fmt.Sprint(args[i+1])
res[keyStr] = valStr
}
return res, nil
}