18f26cfbf7
Before there was a "graceful function": RunWithShutdownFns, it's mainly for some modules which doesn't support context. The old queue system doesn't work well with context, so the old queues need it. After the queue refactoring, the new queue works with context well, so, use Golang context as much as possible, the `RunWithShutdownFns` could be removed (replaced by RunWithCancel for context cancel mechanism), the related code could be simplified. This PR also fixes some legacy queue-init problems, eg: * typo : archiver: "unable to create codes indexer queue" => "unable to create repo-archive queue" * no nil check for failed queues, which causes unfriendly panic After this PR, many goroutines could have better display name:  
143 lines
3.3 KiB
Go
143 lines
3.3 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package log
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import (
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"context"
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"fmt"
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"sync"
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"sync/atomic"
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)
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const DEFAULT = "default"
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// LoggerManager manages loggers and shared event writers
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type LoggerManager struct {
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ctx context.Context
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ctxCancel context.CancelFunc
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mu sync.Mutex
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writers map[string]EventWriter
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loggers map[string]*LoggerImpl
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defaultLogger atomic.Pointer[LoggerImpl]
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pauseMu sync.RWMutex
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pauseChan chan struct{}
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}
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// GetLogger returns a logger with the given name. If the logger doesn't exist, a new empty one will be created.
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func (m *LoggerManager) GetLogger(name string) *LoggerImpl {
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if name == DEFAULT {
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if logger := m.defaultLogger.Load(); logger != nil {
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return logger
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}
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}
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m.mu.Lock()
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defer m.mu.Unlock()
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logger := m.loggers[name]
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if logger == nil {
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logger = NewLoggerWithWriters(m.ctx, name)
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m.loggers[name] = logger
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if name == DEFAULT {
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m.defaultLogger.Store(logger)
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}
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}
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return logger
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}
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// PauseAll pauses all event writers
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func (m *LoggerManager) PauseAll() {
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m.pauseMu.Lock()
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m.pauseChan = make(chan struct{})
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m.pauseMu.Unlock()
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}
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// ResumeAll resumes all event writers
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func (m *LoggerManager) ResumeAll() {
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m.pauseMu.Lock()
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close(m.pauseChan)
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m.pauseChan = nil
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m.pauseMu.Unlock()
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}
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// GetPauseChan returns a channel for writer pausing
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func (m *LoggerManager) GetPauseChan() chan struct{} {
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m.pauseMu.RLock()
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defer m.pauseMu.RUnlock()
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return m.pauseChan
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}
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// Close closes the logger manager, all loggers and writers will be closed, the messages are flushed.
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func (m *LoggerManager) Close() {
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m.mu.Lock()
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defer m.mu.Unlock()
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for _, logger := range m.loggers {
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logger.Close()
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}
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m.loggers = map[string]*LoggerImpl{}
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for _, writer := range m.writers {
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eventWriterStopWait(writer)
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}
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m.writers = map[string]EventWriter{}
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m.ctxCancel()
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}
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// DumpLoggers returns a map of all loggers and their event writers, for debugging and display purposes.
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func (m *LoggerManager) DumpLoggers() map[string]any {
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m.mu.Lock()
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defer m.mu.Unlock()
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dump := map[string]any{}
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for name, logger := range m.loggers {
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loggerDump := map[string]any{
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"IsEnabled": logger.IsEnabled(),
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"EventWriters": logger.DumpWriters(),
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}
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dump[name] = loggerDump
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}
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return dump
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}
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// NewSharedWriter creates a new shared event writer, it can be used by multiple loggers, and a shared writer won't be closed if a logger is closed.
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func (m *LoggerManager) NewSharedWriter(writerName, writerType string, mode WriterMode) (writer EventWriter, err error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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if _, ok := m.writers[writerName]; ok {
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return nil, fmt.Errorf("log event writer %q has been added before", writerName)
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}
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if writer, err = NewEventWriter(writerName, writerType, mode); err != nil {
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return nil, err
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}
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m.writers[writerName] = writer
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eventWriterStartGo(m.ctx, writer, true)
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return writer, nil
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}
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func (m *LoggerManager) GetSharedWriter(writerName string) EventWriter {
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m.mu.Lock()
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defer m.mu.Unlock()
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return m.writers[writerName]
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}
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var loggerManager = NewManager()
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func GetManager() *LoggerManager {
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return loggerManager
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}
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func NewManager() *LoggerManager {
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m := &LoggerManager{writers: map[string]EventWriter{}, loggers: map[string]*LoggerImpl{}}
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m.ctx, m.ctxCancel = newContext(context.Background(), "LoggerManager")
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return m
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}
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