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58dfaf3a75
Although some features are mixed together in this PR, this PR is not
that large, and these features are all related.
Actually there are more than 70 lines are for a toy "test queue", so
this PR is quite simple.
Major features:
1. Allow site admin to clear a queue (remove all items in a queue)
* Because there is no transaction, the "unique queue" could be corrupted
in rare cases, that's unfixable.
* eg: the item is in the "set" but not in the "list", so the item would
never be able to be pushed into the queue.
* Now site admin could simply clear the queue, then everything becomes
correct, the lost items could be re-pushed into queue by future
operations.
3. Split the "admin/monitor" to separate pages
4. Allow to download diagnosis report
* In history, there were many users reporting that Gitea queue gets
stuck, or Gitea's CPU is 100%
* With diagnosis report, maintainers could know what happens clearly
The diagnosis report sample:
[gitea-diagnosis-20230510-192913.zip](https://github.com/go-gitea/gitea/files/11441346/gitea-diagnosis-20230510-192913.zip)
, use "go tool pprof profile.dat" to view the report.
Screenshots:
---------
Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: Giteabot <teabot@gitea.io>
113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package queue
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import (
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"context"
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"sync"
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"time"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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)
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// Manager is a manager for the queues created by "CreateXxxQueue" functions, these queues are called "managed queues".
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type Manager struct {
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mu sync.Mutex
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qidCounter int64
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Queues map[int64]ManagedWorkerPoolQueue
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}
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type ManagedWorkerPoolQueue interface {
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GetName() string
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GetType() string
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GetItemTypeName() string
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GetWorkerNumber() int
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GetWorkerActiveNumber() int
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GetWorkerMaxNumber() int
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SetWorkerMaxNumber(num int)
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GetQueueItemNumber() int
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// FlushWithContext tries to make the handler process all items in the queue synchronously.
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// It is for testing purpose only. It's not designed to be used in a cluster.
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FlushWithContext(ctx context.Context, timeout time.Duration) error
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// RemoveAllItems removes all items in the base queue (on-the-fly items are not affected)
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RemoveAllItems(ctx context.Context) error
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}
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var manager *Manager
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func init() {
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manager = &Manager{
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Queues: make(map[int64]ManagedWorkerPoolQueue),
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}
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}
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func GetManager() *Manager {
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return manager
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}
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func (m *Manager) AddManagedQueue(managed ManagedWorkerPoolQueue) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.qidCounter++
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m.Queues[m.qidCounter] = managed
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}
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func (m *Manager) GetManagedQueue(qid int64) ManagedWorkerPoolQueue {
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m.mu.Lock()
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defer m.mu.Unlock()
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return m.Queues[qid]
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}
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func (m *Manager) ManagedQueues() map[int64]ManagedWorkerPoolQueue {
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m.mu.Lock()
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defer m.mu.Unlock()
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queues := make(map[int64]ManagedWorkerPoolQueue, len(m.Queues))
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for k, v := range m.Queues {
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queues[k] = v
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}
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return queues
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}
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// FlushAll tries to make all managed queues process all items synchronously, until timeout or the queue is empty.
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// It is for testing purpose only. It's not designed to be used in a cluster.
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func (m *Manager) FlushAll(ctx context.Context, timeout time.Duration) error {
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var finalErr error
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qs := m.ManagedQueues()
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for _, q := range qs {
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if err := q.FlushWithContext(ctx, timeout); err != nil {
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finalErr = err // TODO: in Go 1.20: errors.Join
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}
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}
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return finalErr
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}
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// CreateSimpleQueue creates a simple queue from global setting config provider by name
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func CreateSimpleQueue[T any](name string, handler HandlerFuncT[T]) *WorkerPoolQueue[T] {
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return createWorkerPoolQueue(name, setting.CfgProvider, handler, false)
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}
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// CreateUniqueQueue creates a unique queue from global setting config provider by name
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func CreateUniqueQueue[T any](name string, handler HandlerFuncT[T]) *WorkerPoolQueue[T] {
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return createWorkerPoolQueue(name, setting.CfgProvider, handler, true)
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}
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func createWorkerPoolQueue[T any](name string, cfgProvider setting.ConfigProvider, handler HandlerFuncT[T], unique bool) *WorkerPoolQueue[T] {
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queueSetting, err := setting.GetQueueSettings(cfgProvider, name)
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if err != nil {
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log.Error("Failed to get queue settings for %q: %v", name, err)
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return nil
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}
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w, err := NewWorkerPoolQueueBySetting(name, queueSetting, handler, unique)
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if err != nil {
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log.Error("Failed to create queue %q: %v", name, err)
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return nil
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}
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GetManager().AddManagedQueue(w)
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return w
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}
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