noop.go

// Copyright (c) Tetrate, Inc 2023.
//
// 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 telemetry

import "context"

// NoopLogger returns a no-op logger.
func NoopLogger() Logger {
	return &noopLogger{level: LevelNone}
}

type noopLogger struct {
	level Level
}

func (*noopLogger) Debug(string, ...interface{})         {}
func (*noopLogger) Info(string, ...interface{})          {}
func (n noopLogger) Error(string, error, ...interface{}) {}
func (n *noopLogger) SetLevel(l Level)                   { n.level = l }
func (n *noopLogger) Level() Level                       { return n.level }
func (n *noopLogger) With(...interface{}) Logger         { return n }
func (n *noopLogger) Context(context.Context) Logger     { return n }
func (n *noopLogger) Metric(Metric) Logger               { return n }
func (n *noopLogger) Clone() Logger                      { return NoopLogger() }