mirror of
https://github.com/prometheus/prometheus.git
synced 2025-07-04 11:33:25 +00:00
95f49dd84b
* Bump prometheus/common to v0.63.0 Signed-off-by: Arthur Silva Sens <arthursens2005@gmail.com> * nolint usage of deprecated model.NameValidationScheme Signed-off-by: Arthur Silva Sens <arthursens2005@gmail.com> --------- Signed-off-by: Arthur Silva Sens <arthursens2005@gmail.com>
94 lines
2.9 KiB
Go
94 lines
2.9 KiB
Go
// Copyright 2020 The Prometheus 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 logging
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"log/slog"
|
|
"os"
|
|
|
|
"github.com/prometheus/common/promslog"
|
|
)
|
|
|
|
var _ slog.Handler = (*JSONFileLogger)(nil)
|
|
|
|
var _ io.Closer = (*JSONFileLogger)(nil)
|
|
|
|
// JSONFileLogger represents a logger that writes JSON to a file. It implements
|
|
// the slog.Handler interface, as well as the io.Closer interface.
|
|
type JSONFileLogger struct {
|
|
handler slog.Handler
|
|
file *os.File
|
|
}
|
|
|
|
// NewJSONFileLogger returns a new JSONFileLogger.
|
|
func NewJSONFileLogger(s string) (*JSONFileLogger, error) {
|
|
if s == "" {
|
|
return nil, nil
|
|
}
|
|
|
|
f, err := os.OpenFile(s, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o666)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("can't create json log file: %w", err)
|
|
}
|
|
|
|
jsonFmt := promslog.NewFormat()
|
|
_ = jsonFmt.Set("json")
|
|
return &JSONFileLogger{
|
|
handler: promslog.New(&promslog.Config{Format: jsonFmt, Writer: f}).Handler(),
|
|
file: f,
|
|
}, nil
|
|
}
|
|
|
|
// Close closes the underlying file. It implements the io.Closer interface.
|
|
func (l *JSONFileLogger) Close() error {
|
|
return l.file.Close()
|
|
}
|
|
|
|
// Enabled returns true if and only if the internal slog.Handler is enabled. It
|
|
// implements the slog.Handler interface.
|
|
func (l *JSONFileLogger) Enabled(ctx context.Context, level slog.Level) bool {
|
|
return l.handler.Enabled(ctx, level)
|
|
}
|
|
|
|
// Handle takes record created by an slog.Logger and forwards it to the
|
|
// internal slog.Handler for dispatching the log call to the backing file. It
|
|
// implements the slog.Handler interface.
|
|
func (l *JSONFileLogger) Handle(ctx context.Context, r slog.Record) error {
|
|
return l.handler.Handle(ctx, r.Clone())
|
|
}
|
|
|
|
// WithAttrs returns a new *JSONFileLogger with a new internal handler that has
|
|
// the provided attrs attached as attributes on all further log calls. It
|
|
// implements the slog.Handler interface.
|
|
func (l *JSONFileLogger) WithAttrs(attrs []slog.Attr) slog.Handler {
|
|
if len(attrs) == 0 {
|
|
return l
|
|
}
|
|
|
|
return &JSONFileLogger{file: l.file, handler: l.handler.WithAttrs(attrs)}
|
|
}
|
|
|
|
// WithGroup returns a new *JSONFileLogger with a new internal handler that has
|
|
// the provided group name attached, to group all other attributes added to the
|
|
// logger. It implements the slog.Handler interface.
|
|
func (l *JSONFileLogger) WithGroup(name string) slog.Handler {
|
|
if name == "" {
|
|
return l
|
|
}
|
|
|
|
return &JSONFileLogger{file: l.file, handler: l.handler.WithGroup(name)}
|
|
}
|