mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-11-23 08:47:42 -05:00
6f9c278559
# ⚠️ Breaking Many deprecated queue config options are removed (actually, they should have been removed in 1.18/1.19). If you see the fatal message when starting Gitea: "Please update your app.ini to remove deprecated config options", please follow the error messages to remove these options from your app.ini. Example: ``` 2023/05/06 19:39:22 [E] Removed queue option: `[indexer].ISSUE_INDEXER_QUEUE_TYPE`. Use new options in `[queue.issue_indexer]` 2023/05/06 19:39:22 [E] Removed queue option: `[indexer].UPDATE_BUFFER_LEN`. Use new options in `[queue.issue_indexer]` 2023/05/06 19:39:22 [F] Please update your app.ini to remove deprecated config options ``` Many options in `[queue]` are are dropped, including: `WRAP_IF_NECESSARY`, `MAX_ATTEMPTS`, `TIMEOUT`, `WORKERS`, `BLOCK_TIMEOUT`, `BOOST_TIMEOUT`, `BOOST_WORKERS`, they can be removed from app.ini. # The problem The old queue package has some legacy problems: * complexity: I doubt few people could tell how it works. * maintainability: Too many channels and mutex/cond are mixed together, too many different structs/interfaces depends each other. * stability: due to the complexity & maintainability, sometimes there are strange bugs and difficult to debug, and some code doesn't have test (indeed some code is difficult to test because a lot of things are mixed together). * general applicability: although it is called "queue", its behavior is not a well-known queue. * scalability: it doesn't seem easy to make it work with a cluster without breaking its behaviors. It came from some very old code to "avoid breaking", however, its technical debt is too heavy now. It's a good time to introduce a better "queue" package. # The new queue package It keeps using old config and concept as much as possible. * It only contains two major kinds of concepts: * The "base queue": channel, levelqueue, redis * They have the same abstraction, the same interface, and they are tested by the same testing code. * The "WokerPoolQueue", it uses the "base queue" to provide "worker pool" function, calls the "handler" to process the data in the base queue. * The new code doesn't do "PushBack" * Think about a queue with many workers, the "PushBack" can't guarantee the order for re-queued unhandled items, so in new code it just does "normal push" * The new code doesn't do "pause/resume" * The "pause/resume" was designed to handle some handler's failure: eg: document indexer (elasticsearch) is down * If a queue is paused for long time, either the producers blocks or the new items are dropped. * The new code doesn't do such "pause/resume" trick, it's not a common queue's behavior and it doesn't help much. * If there are unhandled items, the "push" function just blocks for a few seconds and then re-queue them and retry. * The new code doesn't do "worker booster" * Gitea's queue's handlers are light functions, the cost is only the go-routine, so it doesn't make sense to "boost" them. * The new code only use "max worker number" to limit the concurrent workers. * The new "Push" never blocks forever * Instead of creating more and more blocking goroutines, return an error is more friendly to the server and to the end user. There are more details in code comments: eg: the "Flush" problem, the strange "code.index" hanging problem, the "immediate" queue problem. Almost ready for review. TODO: * [x] add some necessary comments during review * [x] add some more tests if necessary * [x] update documents and config options * [x] test max worker / active worker * [x] re-run the CI tasks to see whether any test is flaky * [x] improve the `handleOldLengthConfiguration` to provide more friendly messages * [x] fine tune default config values (eg: length?) ## Code coverage: 
124 lines
4 KiB
Go
124 lines
4 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package queue
|
|
|
|
import (
|
|
"context"
|
|
"path/filepath"
|
|
"testing"
|
|
|
|
"code.gitea.io/gitea/modules/setting"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestManager(t *testing.T) {
|
|
oldAppDataPath := setting.AppDataPath
|
|
setting.AppDataPath = t.TempDir()
|
|
defer func() {
|
|
setting.AppDataPath = oldAppDataPath
|
|
}()
|
|
|
|
newQueueFromConfig := func(name, cfg string) (*WorkerPoolQueue[int], error) {
|
|
cfgProvider, err := setting.NewConfigProviderFromData(cfg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
qs, err := setting.GetQueueSettings(cfgProvider, name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return NewWorkerPoolQueueBySetting(name, qs, func(s ...int) (unhandled []int) { return nil }, false)
|
|
}
|
|
|
|
// test invalid CONN_STR
|
|
_, err := newQueueFromConfig("default", `
|
|
[queue]
|
|
DATADIR = temp-dir
|
|
CONN_STR = redis://
|
|
`)
|
|
assert.ErrorContains(t, err, "invalid leveldb connection string")
|
|
|
|
// test default config
|
|
q, err := newQueueFromConfig("default", "")
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, "default", q.GetName())
|
|
assert.Equal(t, "level", q.GetType())
|
|
assert.Equal(t, filepath.Join(setting.AppDataPath, "queues/common"), q.baseConfig.DataFullDir)
|
|
assert.Equal(t, 100, q.baseConfig.Length)
|
|
assert.Equal(t, 20, q.batchLength)
|
|
assert.Equal(t, "", q.baseConfig.ConnStr)
|
|
assert.Equal(t, "default_queue", q.baseConfig.QueueFullName)
|
|
assert.Equal(t, "default_queue_unique", q.baseConfig.SetFullName)
|
|
assert.Equal(t, 10, q.GetWorkerMaxNumber())
|
|
assert.Equal(t, 0, q.GetWorkerNumber())
|
|
assert.Equal(t, 0, q.GetWorkerActiveNumber())
|
|
assert.Equal(t, 0, q.GetQueueItemNumber())
|
|
assert.Equal(t, "int", q.GetItemTypeName())
|
|
|
|
// test inherited config
|
|
cfgProvider, err := setting.NewConfigProviderFromData(`
|
|
[queue]
|
|
TYPE = channel
|
|
DATADIR = queues/dir1
|
|
LENGTH = 100
|
|
BATCH_LENGTH = 20
|
|
CONN_STR = "addrs=127.0.0.1:6379 db=0"
|
|
QUEUE_NAME = _queue1
|
|
|
|
[queue.sub]
|
|
TYPE = level
|
|
DATADIR = queues/dir2
|
|
LENGTH = 102
|
|
BATCH_LENGTH = 22
|
|
CONN_STR =
|
|
QUEUE_NAME = _q2
|
|
SET_NAME = _u2
|
|
MAX_WORKERS = 2
|
|
`)
|
|
|
|
assert.NoError(t, err)
|
|
|
|
q1 := createWorkerPoolQueue[string]("no-such", cfgProvider, nil, false)
|
|
assert.Equal(t, "no-such", q1.GetName())
|
|
assert.Equal(t, "dummy", q1.GetType()) // no handler, so it becomes dummy
|
|
assert.Equal(t, filepath.Join(setting.AppDataPath, "queues/dir1"), q1.baseConfig.DataFullDir)
|
|
assert.Equal(t, 100, q1.baseConfig.Length)
|
|
assert.Equal(t, 20, q1.batchLength)
|
|
assert.Equal(t, "addrs=127.0.0.1:6379 db=0", q1.baseConfig.ConnStr)
|
|
assert.Equal(t, "no-such_queue1", q1.baseConfig.QueueFullName)
|
|
assert.Equal(t, "no-such_queue1_unique", q1.baseConfig.SetFullName)
|
|
assert.Equal(t, 10, q1.GetWorkerMaxNumber())
|
|
assert.Equal(t, 0, q1.GetWorkerNumber())
|
|
assert.Equal(t, 0, q1.GetWorkerActiveNumber())
|
|
assert.Equal(t, 0, q1.GetQueueItemNumber())
|
|
assert.Equal(t, "string", q1.GetItemTypeName())
|
|
qid1 := GetManager().qidCounter
|
|
|
|
q2 := createWorkerPoolQueue("sub", cfgProvider, func(s ...int) (unhandled []int) { return nil }, false)
|
|
assert.Equal(t, "sub", q2.GetName())
|
|
assert.Equal(t, "level", q2.GetType())
|
|
assert.Equal(t, filepath.Join(setting.AppDataPath, "queues/dir2"), q2.baseConfig.DataFullDir)
|
|
assert.Equal(t, 102, q2.baseConfig.Length)
|
|
assert.Equal(t, 22, q2.batchLength)
|
|
assert.Equal(t, "", q2.baseConfig.ConnStr)
|
|
assert.Equal(t, "sub_q2", q2.baseConfig.QueueFullName)
|
|
assert.Equal(t, "sub_q2_u2", q2.baseConfig.SetFullName)
|
|
assert.Equal(t, 2, q2.GetWorkerMaxNumber())
|
|
assert.Equal(t, 0, q2.GetWorkerNumber())
|
|
assert.Equal(t, 0, q2.GetWorkerActiveNumber())
|
|
assert.Equal(t, 0, q2.GetQueueItemNumber())
|
|
assert.Equal(t, "int", q2.GetItemTypeName())
|
|
qid2 := GetManager().qidCounter
|
|
|
|
assert.Equal(t, q1, GetManager().ManagedQueues()[qid1])
|
|
|
|
GetManager().GetManagedQueue(qid1).SetWorkerMaxNumber(120)
|
|
assert.Equal(t, 120, q1.workerMaxNum)
|
|
|
|
stop := runWorkerPoolQueue(q2)
|
|
assert.NoError(t, GetManager().GetManagedQueue(qid2).FlushWithContext(context.Background(), 0))
|
|
assert.NoError(t, GetManager().FlushAll(context.Background(), 0))
|
|
stop()
|
|
}
|