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slog.go
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slog.go
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// The MIT License
//
// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//go:build go1.21
package log
import (
"context"
"log/slog"
"runtime"
"time"
)
type slogLogger struct {
logger *slog.Logger
depth int
}
// NewStructuredLogger creates an adapter around the given logger to be passed to Temporal.
func NewStructuredLogger(logger *slog.Logger) Logger {
return &slogLogger{
logger: logger,
depth: 3,
}
}
func (s *slogLogger) Debug(msg string, keyvals ...interface{}) {
s.log(context.Background(), slog.LevelDebug, msg, keyvals...)
}
func (s *slogLogger) Info(msg string, keyvals ...interface{}) {
s.log(context.Background(), slog.LevelInfo, msg, keyvals...)
}
func (s *slogLogger) Warn(msg string, keyvals ...interface{}) {
s.log(context.Background(), slog.LevelWarn, msg, keyvals...)
}
func (s *slogLogger) Error(msg string, keyvals ...interface{}) {
s.log(context.Background(), slog.LevelError, msg, keyvals...)
}
func (s *slogLogger) log(ctx context.Context, level slog.Level, msg string, args ...any) {
if !s.logger.Enabled(ctx, level) {
return
}
var pcs [1]uintptr
runtime.Callers(s.depth, pcs[:])
record := slog.NewRecord(time.Now(), level, msg, pcs[0])
record.Add(args...)
if ctx == nil {
ctx = context.Background()
}
_ = s.logger.Handler().Handle(ctx, record)
}
func (s *slogLogger) With(keyvals ...interface{}) Logger {
return &slogLogger{
logger: s.logger.With(keyvals...),
depth: s.depth,
}
}
func (s *slogLogger) WithCallerSkip(depth int) Logger {
return &slogLogger{
logger: s.logger,
depth: s.depth + depth,
}
}