mirror of
https://github.com/k3s-io/k3s.git
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107 lines
2.6 KiB
Go
107 lines
2.6 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package logs
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import (
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"fmt"
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"sort"
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"github.com/go-logr/logr"
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json "k8s.io/component-base/logs/json"
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)
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const (
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jsonLogFormat = "json"
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)
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var logRegistry = NewLogFormatRegistry()
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// LogFormatRegistry store klog format registry
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type LogFormatRegistry struct {
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registry map[string]logr.Logger
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frozen bool
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}
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// NewLogFormatRegistry return new init LogFormatRegistry struct
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func NewLogFormatRegistry() *LogFormatRegistry {
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return &LogFormatRegistry{
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registry: make(map[string]logr.Logger),
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frozen: false,
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}
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}
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// Register new log format registry to global logRegistry
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func (lfr *LogFormatRegistry) Register(name string, logger logr.Logger) error {
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if lfr.frozen {
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return fmt.Errorf("log format is frozen, unable to register log format")
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}
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if _, ok := lfr.registry[name]; ok {
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return fmt.Errorf("log format: %s already exists", name)
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}
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lfr.registry[name] = logger
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return nil
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}
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// Get specified log format logger
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func (lfr *LogFormatRegistry) Get(name string) (logr.Logger, error) {
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re, ok := lfr.registry[name]
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if !ok {
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return nil, fmt.Errorf("log format: %s does not exists", name)
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}
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return re, nil
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}
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// Set specified log format logger
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func (lfr *LogFormatRegistry) Set(name string, logger logr.Logger) error {
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if lfr.frozen {
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return fmt.Errorf("log format is frozen, unable to set log format")
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}
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lfr.registry[name] = logger
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return nil
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}
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// Delete specified log format logger
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func (lfr *LogFormatRegistry) Delete(name string) error {
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if lfr.frozen {
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return fmt.Errorf("log format is frozen, unable to delete log format")
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}
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delete(lfr.registry, name)
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return nil
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}
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// List names of registered log formats (sorted)
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func (lfr *LogFormatRegistry) List() []string {
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formats := make([]string, 0, len(lfr.registry))
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for f := range lfr.registry {
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formats = append(formats, f)
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}
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sort.Strings(formats)
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return formats
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}
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// Freeze freezes the log format registry
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func (lfr *LogFormatRegistry) Freeze() {
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lfr.frozen = true
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}
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func init() {
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// Text format is default klog format
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logRegistry.Register(defaultLogFormat, nil)
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logRegistry.Register(jsonLogFormat, json.JSONLogger)
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}
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