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Commit Graph

67 Commits

Author SHA1 Message Date
sillyguodong
a1f5dd7677
Make runs-on support variable expression (#29468)
As title.
Close issue: https://gitea.com/gitea/act_runner/issues/445
Follow: https://gitea.com/gitea/act/pulls/91

Move `getSecretsOfTask` and `getVariablesOfTask` under `models` because
of circular dependency issues.
2024-03-08 06:14:35 +00:00
ChristopherHX
368743baf3
Add ac claim for old docker/build-push-action@v3 / current buildx gha cache (#29584)
Also resolves a warning for current releases

```
| ##[group]GitHub Actions runtime token ACs
| ##[warning]Cannot parse GitHub Actions Runtime Token ACs: "undefined" is not valid JSON
| ##[endgroup]
====>
| ##[group]GitHub Actions runtime token ACs
| ##[endgroup]
```
\* this is an error in v3

References in the docker org:
-
831ca179d3/src/main.ts (L24)
-
7d8b4dc669/src/github.ts (L61)

No known official action of GitHub makes use of this claim.

Current releases throw an error when configure to use actions cache
```
| ERROR: failed to solve: failed to configure gha cache exporter: invalid token without access controls
| ##[error]buildx failed with: ERROR: failed to solve: failed to configure gha cache exporter: invalid token without access controls
```
2024-03-05 17:34:42 +00:00
yp05327
3f3335ae51
Add empty repo check in DetectAndHandleSchedules (#29606)
![image](https://github.com/go-gitea/gitea/assets/18380374/e6081301-bd3e-4cf6-ba4e-e574348dffb4)
2024-03-05 14:47:07 +00:00
yp05327
9616dbec33
Fix workflow trigger event IssueChangeXXX bug (#29559)
Bugs from #29308
Follow #29467

partly fix #29558
2024-03-03 18:37:41 +00:00
Zettat123
1ad4bb9eb7
Fix workflow trigger event bugs (#29467)
1. Fix incorrect `HookEventType` for issue-related events in
`IssueChangeAssignee`
2. Add `case "types"` in the `switch` block in `matchPullRequestEvent`
to avoid warning logs
2024-02-28 15:35:04 +00:00
Zettat123
d0fe6ea4e1
The job should always run when if is always() (#29464)
Fix #27906

According to GitHub's
[documentation](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idneeds),
a job should always run when its `if` is `always()`

> If you would like a job to run even if a job it is dependent on did
not succeed, use the `always()` conditional expression in
`jobs.<job_id>.if`.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2024-02-28 11:54:44 +01:00
yp05327
403766cd81
Ignore empty repo for CreateRepository in action notifier (#29416)
Fix #29415
2024-02-26 09:38:15 +00:00
Zettat123
a4fe1cdf38
Improve the issue_comment workflow trigger event (#29277)
Fix #29175
Replace #29207

This PR makes some improvements to the `issue_comment` workflow trigger
event.

1. Fix the bug that pull requests cannot trigger `issue_comment`
workflows
2. Previously the `issue_comment` event only supported the `created`
activity type. This PR adds support for the missing `edited` and
`deleted` activity types.
3. Some events (including `issue_comment`, `issues`, etc. ) only trigger
workflows that belong to the workflow file on the default branch. This
PR introduces the `IsDefaultBranchWorkflow` function to check for these
events.
2024-02-22 22:47:35 +08:00
KN4CK3R
7e8ff70940
Show commit status for releases (#29149)
Fixes #29082

![grafik](https://github.com/go-gitea/gitea/assets/1666336/bb2ccde1-ee99-459d-9e74-0fb8ea79e8b3)
2024-02-19 10:27:05 +00:00
wxiaoguang
8be198cdef
Use general token signing secret (#29205)
Use a clearly defined "signing secret" for token signing.
2024-02-18 17:39:04 +00:00
Lunny Xiao
c2a8aacae5
Fix missed edit issues event for actions (#29237)
Fix #29213
2024-02-18 15:16:34 +00:00
FuXiaoHei
68e1d17a5f
Expire artifacts before deleting them physically (#29241)
https://github.com/go-gitea/gitea/pull/27172#discussion_r1493735466

When cleanup artifacts, it removes storage first. If storage is not
exist (maybe delete manually), it gets error and continue loop. It makes
a dead loop if there are a lot pending but non-existing artifacts.

Now it updates db record at first to avoid keep a lot of pending status
artifacts.
2024-02-18 22:25:14 +08:00
yp05327
1a6e1cbada
Implement some action notifier functions (#29173)
Fix #29166

Add support for the following activity types of `pull_request`
- assigned
- unassigned
- review_requested
- review_request_removed
- milestoned
- demilestoned
2024-02-18 10:58:46 +00:00
FuXiaoHei
67adc5c1dc
Artifact deletion in actions ui (#27172)
Add deletion link in runs view page.
Fix #26315


![image](https://github.com/go-gitea/gitea/assets/2142787/aa65a4ab-f434-4deb-b953-21e63c212033)

When click deletion button. It marks this artifact `need-delete`.

This artifact would be deleted when actions cleanup cron task.
2024-02-18 10:33:50 +00:00
Zettat123
e600c35f06
Only delete scheduled workflows when needed (#29091)
Fix #29040

`handleSchedules` should be called only if `DetectWorkflows` should
detect schedule workflows
2024-02-08 13:00:17 +00:00
ChristopherHX
a9bc590d5d
Add artifacts v4 jwt to job message and accept it (#28885)
This change allows act_runner / actions_runner to use jwt tokens for
`ACTIONS_RUNTIME_TOKEN` that are compatible with
actions/upload-artifact@v4.

The official Artifact actions are now validating and extracting the jwt
claim scp to get the runid and jobid, the old artifact backend also
needs to accept the same token jwt.

---
Related to #28853

I'm not familar with the auth system, maybe you know how to improve this

I have tested
- the jwt token is a valid token for artifact uploading
- the jwt token can be parsed by actions/upload-artifact@v4 and passes
their scp claim validation

Next steps would be a new artifacts@v4 backend.

~~I'm linking the act_runner change soonish.~~
act_runner change to make the change effective and use jwt tokens
<https://gitea.com/gitea/act_runner/pulls/471>
2024-02-02 14:25:59 +00:00
Zettat123
adc3598a75
Fix an actions schedule bug (#28942)
In #28691, schedule plans will be deleted when a repo's actions unit is
disabled. But when the unit is enabled, the schedule plans won't be
created again.

This PR fixes the bug. The schedule plans will be created again when the
actions unit is re-enabled
2024-01-31 14:55:12 +00:00
Lunny Xiao
5f82ead13c
Simplify how git repositories are opened (#28937)
## Purpose
This is a refactor toward building an abstraction over managing git
repositories.
Afterwards, it does not matter anymore if they are stored on the local
disk or somewhere remote.

## What this PR changes
We used `git.OpenRepository` everywhere previously.
Now, we should split them into two distinct functions:

Firstly, there are temporary repositories which do not change:

```go
git.OpenRepository(ctx, diskPath)
```

Gitea managed repositories having a record in the database in the
`repository` table are moved into the new package `gitrepo`:

```go
gitrepo.OpenRepository(ctx, repo_model.Repo)
```

Why is `repo_model.Repository` the second parameter instead of file
path?
Because then we can easily adapt our repository storage strategy.
The repositories can be stored locally, however, they could just as well
be stored on a remote server.

## Further changes in other PRs
- A Git Command wrapper on package `gitrepo` could be created. i.e.
`NewCommand(ctx, repo_model.Repository, commands...)`. `git.RunOpts{Dir:
repo.RepoPath()}`, the directory should be empty before invoking this
method and it can be filled in the function only. #28940
- Remove the `RepoPath()`/`WikiPath()` functions to reduce the
possibility of mistakes.

---------

Co-authored-by: delvh <dev.lh@web.de>
2024-01-27 21:09:51 +01:00
Zettat123
071b7b2a03
Implement MigrateRepository for the actions notifier (#28920)
Fixes #28699

This PR implements the `MigrateRepository` method for `actionsNotifier`
to detect the schedules from the workflow files in the migrated
repository.
2024-01-25 20:06:29 +08:00
Lunny Xiao
23efd9d278
Fix schedule not trigger bug because matching full ref name with short ref name (#28874)
Fix #28533

Caused by #28691
2024-01-22 02:13:24 +00:00
Lunny Xiao
97292da960
Fix schedule tasks bugs (#28691)
Fix #28157 

This PR fix the possible bugs about actions schedule.

## The Changes

- Move `UpdateRepositoryUnit` and `SetRepoDefaultBranch` from models to
service layer
- Remove schedules plan from database and cancel waiting & running
schedules tasks in this repository when actions unit has been disabled
or global disabled.
- Remove schedules plan from database and cancel waiting & running
schedules tasks in this repository when default branch changed.
2024-01-12 21:50:38 +00:00
Denys Konovalov
f10d716ff4
fix empty ref for cron workflow runs (#28640)
Fix #27678 
Please see
https://github.com/go-gitea/gitea/issues/27678#issuecomment-1871445853
for details.
2023-12-29 06:18:57 +00:00
Lunny Xiao
4eb2a29910
Improve ObjectFormat interface (#28496)
The 4 functions are duplicated, especially as interface methods. I think
we just need to keep `MustID` the only one and remove other 3.

```
MustID(b []byte) ObjectID
MustIDFromString(s string) ObjectID
NewID(b []byte) (ObjectID, error)
NewIDFromString(s string) (ObjectID, error)
```

Introduced the new interfrace method `ComputeHash` which will replace
the interface `HasherInterface`. Now we don't need to keep two
interfaces.

Reintroduced `git.NewIDFromString` and `git.MustIDFromString`. The new
function will detect the hash length to decide which objectformat of it.
If it's 40, then it's SHA1. If it's 64, then it's SHA256. This will be
right if the commitID is a full one. So the parameter should be always a
full commit id.

@AdamMajer Please review.
2023-12-19 07:20:47 +00:00
Adam Majer
cbf923e87b
Abstract hash function usage (#28138)
Refactor Hash interfaces and centralize hash function. This will allow
easier introduction of different hash function later on.

This forms the "no-op" part of the SHA256 enablement patch.
2023-12-13 21:02:00 +00:00
Lunny Xiao
df1e7d0067
Use db.Find instead of writing methods for every object (#28084)
For those simple objects, it's unnecessary to write the find and count
methods again and again.
2023-11-24 03:49:41 +00:00
Denys Konovalov
816e46ee7c
add skip ci functionality (#28075)
Adds the possibility to skip workflow execution if the commit message
contains a string like [skip ci] or similar.

The default strings are the same as on GitHub, users can also set custom
ones in app.ini

Reference:
https://docs.github.com/en/actions/managing-workflow-runs/skipping-workflow-runs

Close #28020
2023-11-18 13:37:08 +02:00
KN4CK3R
83186eca80
Always delete existing scheduled action tasks (#27662)
Fixes #27650
2023-10-18 10:34:39 +00:00
JakobDev
76a85a4ce9
Final round of db.DefaultContext refactor (#27587)
Last part of #27065
2023-10-14 08:37:24 +00:00
JakobDev
ebe803e514
Penultimate round of db.DefaultContext refactor (#27414)
Part of #27065

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2023-10-11 04:24:07 +00:00
Francesco Antognazza
bc21723717
Make Actions tasks/jobs timeouts configurable by the user (#27400)
With this PR we added the possibility to configure the Actions timeouts
values for killing tasks/jobs.
Particularly this enhancement is closely related to the `act_runner`
configuration reported below:
```
# The timeout for a job to be finished.
# Please note that the Gitea instance also has a timeout (3h by default) for the job.
# So the job could be stopped by the Gitea instance if it's timeout is shorter than this.
timeout: 3h
```

---

Setting the corresponding key in the INI configuration file, it is
possible to let jobs run for more than 3 hours.

Signed-off-by: Francesco Antognazza <francesco.antognazza@gmail.com>
2023-10-02 23:09:26 +02:00
Lunny Xiao
9c0a3532a4
Add a new column schedule_id for action_run to track (#26975)
Fix #26971 

And the UI now will display it's scheduled but not triggered by a push.

<img width="954" alt="图片"
src="https://github.com/go-gitea/gitea/assets/81045/d211845c-457e-4c3e-af1f-a0d654d3f365">
2023-09-08 23:01:19 +08:00
Lunny Xiao
d1dca38a2a
Fix schedule actions still running even if workflow disalbed (#26939)
Fix #26782
2023-09-07 10:25:46 +08:00
FuXiaoHei
460a2b0edf
Artifacts retention and auto clean up (#26131)
Currently, Artifact does not have an expiration and automatic cleanup
mechanism, and this feature needs to be added. It contains the following
key points:

- [x] add global artifact retention days option in config file. Default
value is 90 days.
- [x] add cron task to clean up expired artifacts. It should run once a
day.
- [x] support custom retention period from `retention-days: 5` in
`upload-artifact@v3`.
- [x] artifacts link in actions view should be non-clickable text when
expired.
2023-09-06 07:41:06 +00:00
Lunny Xiao
540bf9fa6d
Move notification interface to services layer (#26915)
Extract from #22266
2023-09-05 18:37:47 +00:00
Lunny Xiao
0d55f64e6c
chore(actions): support cron schedule task (#26655)
Replace #22751 

1. only support the default branch in the repository setting.
2. autoload schedule data from the schedule table after starting the
service.
3. support specific syntax like `@yearly`, `@monthly`, `@weekly`,
`@daily`, `@hourly`

## How to use

See the [GitHub Actions
document](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#schedule)
for getting more detailed information.

```yaml
on:
  schedule:
    - cron: '30 5 * * 1,3'
    - cron: '30 5 * * 2,4'

jobs:
  test_schedule:
    runs-on: ubuntu-latest
    steps:
      - name: Not on Monday or Wednesday
        if: github.event.schedule != '30 5 * * 1,3'
        run: echo "This step will be skipped on Monday and Wednesday"
      - name: Every time
        run: echo "This step will always run"
```

Signed-off-by: Bo-Yi.Wu <appleboy.tw@gmail.com>

---------


Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2023-08-24 03:06:51 +00:00
a1012112796
19872063a3
add disable workflow feature (#26413)
As title, that's simmilar with github.


![image](https://github.com/go-gitea/gitea/assets/25342410/9e8b2444-63e0-4e87-80da-730c1e4d09d6)



![image](https://github.com/go-gitea/gitea/assets/25342410/6c3a3345-3ba7-48c9-9acd-3e621632491b)

---------

Signed-off-by: a1012112796 <1012112796@qq.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Jason Song <i@wolfogre.com>
2023-08-14 15:14:30 +00:00
Zettat123
9a8af92577
Fix the bug when getting files changed for pull_request_target event (#26320)
Follow #25229

Copy from
https://github.com/go-gitea/gitea/pull/26290#issuecomment-1663135186

The bug is that we cannot get changed files for the
`pull_request_target` event. This event runs in the context of the base
branch, so we won't get any changes if we call
`GetFilesChangedSinceCommit` with `PullRequest.Base.Ref`.
2023-08-05 14:26:06 +08:00
caicandong
983167cf49
Fix pull request check list is limited (#26179)
In the original implementation, we can only get the first 30 records of
the commit status (the default paging size), if the commit status is
more than 30, it will lead to the bug #25990. I made the following two
changes.
- On the page, use the ` db.ListOptions{ListAll: true}` parameter
instead of `db.ListOptions{}`
- The `GetLatestCommitStatus` function makes a determination as to
whether or not a pager is being used.

fixed #25990
2023-07-31 02:21:09 +00:00
Bo-Yi Wu
44781f9f5c
Implement auto-cancellation of concurrent jobs if the event is push (#25716)
- cancel running jobs if the event is push
- Add a new function `CancelRunningJobs` to cancel all running jobs of a
run
- Update `FindRunOptions` struct to include `Ref` field and update its
condition in `toConds` function
- Implement auto cancellation of running jobs in the same workflow in
`notify` function

related task: https://github.com/go-gitea/gitea/pull/22751/

---------

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Signed-off-by: appleboy <appleboy.tw@gmail.com>
Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: delvh <dev.lh@web.de>
2023-07-25 11:15:55 +08:00
caicandong
840830b655
Remove commit status running and warning to align GitHub (#25839)
Fix #25776. Close #25826.

In the discussion of #25776, @wolfogre's suggestion was to remove the
commit status of `running` and `warning` to keep it consistent with
github.

references:
-
https://docs.github.com/en/rest/commits/statuses?apiVersion=2022-11-28#about-commit-statuses


## ⚠️ BREAKING ⚠️

So the commit status of Gitea will be consistent with GitHub, only
`pending`, `success`, `error` and `failure`, while `warning` and
`running` are not supported anymore.

---------

Co-authored-by: Jason Song <i@wolfogre.com>
2023-07-21 16:24:36 +08:00
Lunny Xiao
0fd1672ae4
For API attachments, use API URL (#25639)
Fix #25257

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-07-10 09:31:19 +00:00
Zettat123
a42a838843
Fix ref for workflows triggered by pull_request_target (#25743)
Follow #25229

At present, when the trigger event is `pull_request_target`, the `ref`
and `sha` of `ActionRun` are set according to the base branch of the
pull request. This makes it impossible for us to find the head branch of
the `ActionRun` directly. In this PR, the `ref` and `sha` will always be
set to the head branch and they will be changed to the base branch when
generating the task context.
2023-07-07 19:22:03 +00:00
Jason Song
6daf21c9b7
Fix content holes in Actions task logs file (#25560)
Fix #25451.

Bugfixes:
- When stopping the zombie or endless tasks, set `LogInStorage` to true
after transferring the file to storage. It was missing, it could write
to a nonexistent file in DBFS because `LogInStorage` was false.
- Always update `ActionTask.Updated` when there's a new state reported
by the runner, even if there's no change. This is to avoid the task
being judged as a zombie task.

Enhancement:
- Support `Stat()` for DBFS file.
- `WriteLogs` refuses to write if it could result in content holes.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-06-28 19:07:29 +02:00
Zettat123
48e5a74f21
Support pull_request_target event (#25229)
Fix #25088

This PR adds the support for
[`pull_request_target`](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target)
workflow trigger. `pull_request_target` is similar to `pull_request`,
but the workflow triggered by the `pull_request_target` event runs in
the context of the base branch of the pull request rather than the head
branch. Since the workflow from the base is considered trusted, it can
access the secrets and doesn't need approvals to run.
2023-06-26 14:33:18 +08:00
Jason Song
174213530d
Fix Permission in API returned repository struct (#25388)
The old code generates `structs.Repository.Permissions` with only
`access.Permission.AccessMode`, however, it should check the units too,
or the value could be incorrect. For example,
`structs.Repository.Permissions.Push` could be false even the doer has
write access to code unit.

Should fix
https://github.com/renovatebot/renovate/issues/14059#issuecomment-1047961128
(Not reported by it, I just found it when I was looking into this bug)

---

Review tips:

The major changes are
- `modules/structs/repo.go`
https://github.com/go-gitea/gitea/pull/25388/files#diff-870406f6857117f8b03611c43fca0ab9ed6d6e76a2d0069a7c1f17e8fa9092f7
- `services/convert/repository.go`
https://github.com/go-gitea/gitea/pull/25388/files#diff-7736f6d2ae894c9edb7729a80ab89aa183b888a26a811a0c1fdebd18726a7101

And other changes are passive.
2023-06-22 13:08:08 +00:00
Lunny Xiao
419804fd4d
Fix compatible for webhook ref type (#25195)
Fix #25185 
Caused by #24634
2023-06-13 06:05:28 +00:00
Zettat123
15d238d321
Add WithPullRequest for actionsNotifier (#25144) 2023-06-11 09:06:43 +08:00
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
Lunny Xiao
f9cfd6ce5b
Use the type RefName for all the needed places and fix pull mirror sync bugs (#24634)
This PR replaces all string refName as a type `git.RefName` to make the
code more maintainable.

Fix #15367
Replaces #23070 
It also fixed a bug that tags are not sync because `git remote --prune
origin` will not remove local tags if remote removed.

We in fact should use `git fetch --prune --tags origin` but not `git
remote update origin` to do the sync.

Some answer from ChatGPT as ref.

> If the git fetch --prune --tags command is not working as expected,
there could be a few reasons why. Here are a few things to check:
> 
>Make sure that you have the latest version of Git installed on your
system. You can check the version by running git --version in your
terminal. If you have an outdated version, try updating Git and see if
that resolves the issue.
> 
>Check that your Git repository is properly configured to track the
remote repository's tags. You can check this by running git config
--get-all remote.origin.fetch and verifying that it includes
+refs/tags/*:refs/tags/*. If it does not, you can add it by running git
config --add remote.origin.fetch "+refs/tags/*:refs/tags/*".
> 
>Verify that the tags you are trying to prune actually exist on the
remote repository. You can do this by running git ls-remote --tags
origin to list all the tags on the remote repository.
> 
>Check if any local tags have been created that match the names of tags
on the remote repository. If so, these local tags may be preventing the
git fetch --prune --tags command from working properly. You can delete
local tags using the git tag -d command.

---------

Co-authored-by: delvh <dev.lh@web.de>
2023-05-26 01:04:48 +00:00
wxiaoguang
6f9c278559
Rewrite queue (#24505)
# ⚠️ 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:

![image](https://user-images.githubusercontent.com/2114189/236620635-55576955-f95d-4810-b12f-879026a3afdf.png)
2023-05-08 19:49:59 +08:00