forgejo/modules/queue/workerqueue_test.go
wxiaoguang 18f26cfbf7
Improve queue and logger context (#24924)
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:

![image](https://github.com/go-gitea/gitea/assets/2114189/701b2a9b-8065-4137-aeaa-0bda2b34604a)

![image](https://github.com/go-gitea/gitea/assets/2114189/f1d5f50f-0534-40f0-b0be-f2c9daa5fe92)
2023-05-26 07:31:55 +00:00

252 lines
7.7 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package queue
import (
"context"
"strconv"
"sync"
"testing"
"time"
"code.gitea.io/gitea/modules/setting"
"github.com/stretchr/testify/assert"
)
func runWorkerPoolQueue[T any](q *WorkerPoolQueue[T]) func() {
go q.Run()
return func() {
q.ShutdownWait(1 * time.Second)
}
}
func TestWorkerPoolQueueUnhandled(t *testing.T) {
oldUnhandledItemRequeueDuration := unhandledItemRequeueDuration.Load()
unhandledItemRequeueDuration.Store(0)
defer unhandledItemRequeueDuration.Store(oldUnhandledItemRequeueDuration)
mu := sync.Mutex{}
test := func(t *testing.T, queueSetting setting.QueueSettings) {
queueSetting.Length = 100
queueSetting.Type = "channel"
queueSetting.Datadir = t.TempDir() + "/test-queue"
m := map[int]int{}
// odds are handled once, evens are handled twice
handler := func(items ...int) (unhandled []int) {
testRecorder.Record("handle:%v", items)
for _, item := range items {
mu.Lock()
if item%2 == 0 && m[item] == 0 {
unhandled = append(unhandled, item)
}
m[item]++
mu.Unlock()
}
return unhandled
}
q, _ := newWorkerPoolQueueForTest("test-workpoolqueue", queueSetting, handler, false)
stop := runWorkerPoolQueue(q)
for i := 0; i < queueSetting.Length; i++ {
testRecorder.Record("push:%v", i)
assert.NoError(t, q.Push(i))
}
assert.NoError(t, q.FlushWithContext(context.Background(), 0))
stop()
ok := true
for i := 0; i < queueSetting.Length; i++ {
if i%2 == 0 {
ok = ok && assert.EqualValues(t, 2, m[i], "test %s: item %d", t.Name(), i)
} else {
ok = ok && assert.EqualValues(t, 1, m[i], "test %s: item %d", t.Name(), i)
}
}
if !ok {
t.Logf("m: %v", m)
t.Logf("records: %v", testRecorder.Records())
}
testRecorder.Reset()
}
runCount := 2 // we can run these tests even hundreds times to see its stability
t.Run("1/1", func(t *testing.T) {
for i := 0; i < runCount; i++ {
test(t, setting.QueueSettings{BatchLength: 1, MaxWorkers: 1})
}
})
t.Run("3/1", func(t *testing.T) {
for i := 0; i < runCount; i++ {
test(t, setting.QueueSettings{BatchLength: 3, MaxWorkers: 1})
}
})
t.Run("4/5", func(t *testing.T) {
for i := 0; i < runCount; i++ {
test(t, setting.QueueSettings{BatchLength: 4, MaxWorkers: 5})
}
})
}
func TestWorkerPoolQueuePersistence(t *testing.T) {
runCount := 2 // we can run these tests even hundreds times to see its stability
t.Run("1/1", func(t *testing.T) {
for i := 0; i < runCount; i++ {
testWorkerPoolQueuePersistence(t, setting.QueueSettings{BatchLength: 1, MaxWorkers: 1, Length: 100})
}
})
t.Run("3/1", func(t *testing.T) {
for i := 0; i < runCount; i++ {
testWorkerPoolQueuePersistence(t, setting.QueueSettings{BatchLength: 3, MaxWorkers: 1, Length: 100})
}
})
t.Run("4/5", func(t *testing.T) {
for i := 0; i < runCount; i++ {
testWorkerPoolQueuePersistence(t, setting.QueueSettings{BatchLength: 4, MaxWorkers: 5, Length: 100})
}
})
}
func testWorkerPoolQueuePersistence(t *testing.T, queueSetting setting.QueueSettings) {
testCount := queueSetting.Length
queueSetting.Type = "level"
queueSetting.Datadir = t.TempDir() + "/test-queue"
mu := sync.Mutex{}
var tasksQ1, tasksQ2 []string
q1 := func() {
startWhenAllReady := make(chan struct{}) // only start data consuming when the "testCount" tasks are all pushed into queue
stopAt20Shutdown := make(chan struct{}) // stop and shutdown at the 20th item
testHandler := func(data ...string) []string {
<-startWhenAllReady
time.Sleep(10 * time.Millisecond)
for _, s := range data {
mu.Lock()
tasksQ1 = append(tasksQ1, s)
mu.Unlock()
if s == "task-20" {
close(stopAt20Shutdown)
}
}
return nil
}
q, _ := newWorkerPoolQueueForTest("pr_patch_checker_test", queueSetting, testHandler, true)
stop := runWorkerPoolQueue(q)
for i := 0; i < testCount; i++ {
_ = q.Push("task-" + strconv.Itoa(i))
}
close(startWhenAllReady)
<-stopAt20Shutdown // it's possible to have more than 20 tasks executed
stop()
}
q1() // run some tasks and shutdown at an intermediate point
time.Sleep(100 * time.Millisecond) // because the handler in q1 has a slight delay, we need to wait for it to finish
q2 := func() {
testHandler := func(data ...string) []string {
for _, s := range data {
mu.Lock()
tasksQ2 = append(tasksQ2, s)
mu.Unlock()
}
return nil
}
q, _ := newWorkerPoolQueueForTest("pr_patch_checker_test", queueSetting, testHandler, true)
stop := runWorkerPoolQueue(q)
assert.NoError(t, q.FlushWithContext(context.Background(), 0))
stop()
}
q2() // restart the queue to continue to execute the tasks in it
assert.NotZero(t, len(tasksQ1))
assert.NotZero(t, len(tasksQ2))
assert.EqualValues(t, testCount, len(tasksQ1)+len(tasksQ2))
}
func TestWorkerPoolQueueActiveWorkers(t *testing.T) {
oldWorkerIdleDuration := workerIdleDuration
workerIdleDuration = 300 * time.Millisecond
defer func() {
workerIdleDuration = oldWorkerIdleDuration
}()
handler := func(items ...int) (unhandled []int) {
time.Sleep(100 * time.Millisecond)
return nil
}
q, _ := newWorkerPoolQueueForTest("test-workpoolqueue", setting.QueueSettings{Type: "channel", BatchLength: 1, MaxWorkers: 1, Length: 100}, handler, false)
stop := runWorkerPoolQueue(q)
for i := 0; i < 5; i++ {
assert.NoError(t, q.Push(i))
}
time.Sleep(50 * time.Millisecond)
assert.EqualValues(t, 1, q.GetWorkerNumber())
assert.EqualValues(t, 1, q.GetWorkerActiveNumber())
time.Sleep(500 * time.Millisecond)
assert.EqualValues(t, 1, q.GetWorkerNumber())
assert.EqualValues(t, 0, q.GetWorkerActiveNumber())
time.Sleep(workerIdleDuration)
assert.EqualValues(t, 1, q.GetWorkerNumber()) // there is at least one worker after the queue begins working
stop()
q, _ = newWorkerPoolQueueForTest("test-workpoolqueue", setting.QueueSettings{Type: "channel", BatchLength: 1, MaxWorkers: 3, Length: 100}, handler, false)
stop = runWorkerPoolQueue(q)
for i := 0; i < 15; i++ {
assert.NoError(t, q.Push(i))
}
time.Sleep(50 * time.Millisecond)
assert.EqualValues(t, 3, q.GetWorkerNumber())
assert.EqualValues(t, 3, q.GetWorkerActiveNumber())
time.Sleep(500 * time.Millisecond)
assert.EqualValues(t, 3, q.GetWorkerNumber())
assert.EqualValues(t, 0, q.GetWorkerActiveNumber())
time.Sleep(workerIdleDuration)
assert.EqualValues(t, 1, q.GetWorkerNumber()) // there is at least one worker after the queue begins working
stop()
}
func TestWorkerPoolQueueShutdown(t *testing.T) {
oldUnhandledItemRequeueDuration := unhandledItemRequeueDuration.Load()
unhandledItemRequeueDuration.Store(int64(100 * time.Millisecond))
defer unhandledItemRequeueDuration.Store(oldUnhandledItemRequeueDuration)
// simulate a slow handler, it doesn't handle any item (all items will be pushed back to the queue)
handlerCalled := make(chan struct{})
handler := func(items ...int) (unhandled []int) {
if items[0] == 0 {
close(handlerCalled)
}
time.Sleep(400 * time.Millisecond)
return items
}
qs := setting.QueueSettings{Type: "level", Datadir: t.TempDir() + "/queue", BatchLength: 3, MaxWorkers: 4, Length: 20}
q, _ := newWorkerPoolQueueForTest("test-workpoolqueue", qs, handler, false)
stop := runWorkerPoolQueue(q)
for i := 0; i < qs.Length; i++ {
assert.NoError(t, q.Push(i))
}
<-handlerCalled
time.Sleep(200 * time.Millisecond) // wait for a while to make sure all workers are active
assert.EqualValues(t, 4, q.GetWorkerActiveNumber())
stop() // stop triggers shutdown
assert.EqualValues(t, 0, q.GetWorkerActiveNumber())
// no item was ever handled, so we still get all of them again
q, _ = newWorkerPoolQueueForTest("test-workpoolqueue", qs, handler, false)
assert.EqualValues(t, 20, q.GetQueueItemNumber())
}