forked from toolshed/abra
121 lines
2.9 KiB
Go
121 lines
2.9 KiB
Go
//go:build go1.21
|
|
// +build go1.21
|
|
|
|
/*
|
|
Copyright 2023 The logr Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package logr
|
|
|
|
import (
|
|
"context"
|
|
"log/slog"
|
|
"runtime"
|
|
"time"
|
|
)
|
|
|
|
var (
|
|
_ LogSink = &slogSink{}
|
|
_ CallDepthLogSink = &slogSink{}
|
|
_ Underlier = &slogSink{}
|
|
)
|
|
|
|
// Underlier is implemented by the LogSink returned by NewFromLogHandler.
|
|
type Underlier interface {
|
|
// GetUnderlying returns the Handler used by the LogSink.
|
|
GetUnderlying() slog.Handler
|
|
}
|
|
|
|
const (
|
|
// nameKey is used to log the `WithName` values as an additional attribute.
|
|
nameKey = "logger"
|
|
|
|
// errKey is used to log the error parameter of Error as an additional attribute.
|
|
errKey = "err"
|
|
)
|
|
|
|
type slogSink struct {
|
|
callDepth int
|
|
name string
|
|
handler slog.Handler
|
|
}
|
|
|
|
func (l *slogSink) Init(info RuntimeInfo) {
|
|
l.callDepth = info.CallDepth
|
|
}
|
|
|
|
func (l *slogSink) GetUnderlying() slog.Handler {
|
|
return l.handler
|
|
}
|
|
|
|
func (l *slogSink) WithCallDepth(depth int) LogSink {
|
|
newLogger := *l
|
|
newLogger.callDepth += depth
|
|
return &newLogger
|
|
}
|
|
|
|
func (l *slogSink) Enabled(level int) bool {
|
|
return l.handler.Enabled(context.Background(), slog.Level(-level))
|
|
}
|
|
|
|
func (l *slogSink) Info(level int, msg string, kvList ...interface{}) {
|
|
l.log(nil, msg, slog.Level(-level), kvList...)
|
|
}
|
|
|
|
func (l *slogSink) Error(err error, msg string, kvList ...interface{}) {
|
|
l.log(err, msg, slog.LevelError, kvList...)
|
|
}
|
|
|
|
func (l *slogSink) log(err error, msg string, level slog.Level, kvList ...interface{}) {
|
|
var pcs [1]uintptr
|
|
// skip runtime.Callers, this function, Info/Error, and all helper functions above that.
|
|
runtime.Callers(3+l.callDepth, pcs[:])
|
|
|
|
record := slog.NewRecord(time.Now(), level, msg, pcs[0])
|
|
if l.name != "" {
|
|
record.AddAttrs(slog.String(nameKey, l.name))
|
|
}
|
|
if err != nil {
|
|
record.AddAttrs(slog.Any(errKey, err))
|
|
}
|
|
record.Add(kvList...)
|
|
_ = l.handler.Handle(context.Background(), record)
|
|
}
|
|
|
|
func (l slogSink) WithName(name string) LogSink {
|
|
if l.name != "" {
|
|
l.name += "/"
|
|
}
|
|
l.name += name
|
|
return &l
|
|
}
|
|
|
|
func (l slogSink) WithValues(kvList ...interface{}) LogSink {
|
|
l.handler = l.handler.WithAttrs(kvListToAttrs(kvList...))
|
|
return &l
|
|
}
|
|
|
|
func kvListToAttrs(kvList ...interface{}) []slog.Attr {
|
|
// We don't need the record itself, only its Add method.
|
|
record := slog.NewRecord(time.Time{}, 0, "", 0)
|
|
record.Add(kvList...)
|
|
attrs := make([]slog.Attr, 0, record.NumAttrs())
|
|
record.Attrs(func(attr slog.Attr) bool {
|
|
attrs = append(attrs, attr)
|
|
return true
|
|
})
|
|
return attrs
|
|
}
|