# ⚠️ 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:
The ordering of the final token causing a close of the queue in this
test may be out of sync due to concurrency. Instead just use ensure that
the queue is closed when everything expected is done.
Fixes: https://github.com/go-gitea/gitea/issues/23608
Fixes: https://github.com/go-gitea/gitea/issues/23977
---------
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Enable [forbidigo](https://github.com/ashanbrown/forbidigo) linter which
forbids print statements. Will check how to integrate this with the
smallest impact possible, so a few `nolint` comments will likely be
required. Plan is to just go through the issues and either:
- Remove the print if it is nonsensical
- Add a `//nolint` directive if it makes sense
I don't plan on investigating the individual issues any further.
<details>
<summary>Initial Lint Results</summary>
```
modules/log/event.go:348:6: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(err)
^
modules/log/event.go:382:6: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(err)
^
modules/queue/unique_queue_disk_channel_test.go:20:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("TempDir %s\n", tmpDir)
^
contrib/backport/backport.go:168:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Backporting %s to %s as %s\n", pr, localReleaseBranch, backportBranch)
^
contrib/backport/backport.go:216:4: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Navigate to %s to open PR\n", url)
^
contrib/backport/backport.go:223:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* `xdg-open %s`\n", url)
^
contrib/backport/backport.go:233:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* `git push -u %s %s`\n", remote, backportBranch)
^
contrib/backport/backport.go:243:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Amending commit to prepend `Backport #%s` to body\n", pr)
^
contrib/backport/backport.go:272:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("* Attempting git cherry-pick --continue")
^
contrib/backport/backport.go:281:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Attempting git cherry-pick %s\n", sha)
^
contrib/backport/backport.go:297:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Current branch is %s\n", currentBranch)
^
contrib/backport/backport.go:299:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Current branch is %s - not checking out\n", currentBranch)
^
contrib/backport/backport.go:304:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* Branch %s already exists. Checking it out...\n", backportBranch)
^
contrib/backport/backport.go:308:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* `git checkout -b %s %s`\n", backportBranch, releaseBranch)
^
contrib/backport/backport.go:313:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* `git fetch %s main`\n", remote)
^
contrib/backport/backport.go:316:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(string(out))
^
contrib/backport/backport.go:319:2: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(string(out))
^
contrib/backport/backport.go:321:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("* `git fetch %s %s`\n", remote, releaseBranch)
^
contrib/backport/backport.go:324:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(string(out))
^
contrib/backport/backport.go:327:2: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(string(out))
^
models/unittest/fixtures.go:50:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("Unsupported RDBMS for integration tests")
^
models/unittest/fixtures.go:89:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("LoadFixtures failed after retries: %v\n", err)
^
models/unittest/fixtures.go:110:4: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Failed to generate sequence update: %v\n", err)
^
models/unittest/fixtures.go:117:6: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Failed to update sequence: %s Error: %v\n", value, err)
^
models/migrations/base/tests.go:118:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("Environment variable $GITEA_ROOT not set")
^
models/migrations/base/tests.go:127:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Could not find gitea binary at %s\n", setting.AppPath)
^
models/migrations/base/tests.go:134:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Environment variable $GITEA_CONF not set - defaulting to %s\n", giteaConf)
^
models/migrations/base/tests.go:145:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Unable to create temporary data path %v\n", err)
^
models/migrations/base/tests.go:154:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Unable to InitFull: %v\n", err)
^
models/migrations/v1_11/v112.go:34:5: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Error: %v", err)
^
contrib/fixtures/fixture_generation.go:36:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("CreateTestEngine: %+v", err)
^
contrib/fixtures/fixture_generation.go:40:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("PrepareTestDatabase: %+v\n", err)
^
contrib/fixtures/fixture_generation.go:46:5: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("generate '%s': %+v\n", r, err)
^
contrib/fixtures/fixture_generation.go:53:5: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("generate '%s': %+v\n", g.name, err)
^
contrib/fixtures/fixture_generation.go:71:4: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s created.\n", path)
^
services/gitdiff/gitdiff_test.go:543:2: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println(result)
^
services/gitdiff/gitdiff_test.go:560:2: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println(result)
^
services/gitdiff/gitdiff_test.go:577:2: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println(result)
^
modules/web/routing/logger_manager.go:34:2: use of `print` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
print Printer
^
modules/doctor/paths.go:109:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Warning: can't remove temporary file: '%s'\n", tmpFile.Name())
^
tests/test_utils.go:33:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf(format+"\n", args...)
^
tests/test_utils.go:61:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Environment variable $GITEA_CONF not set, use default: %s\n", giteaConf)
^
cmd/actions.go:54:9: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
_, _ = fmt.Printf("%s\n", respText)
^
cmd/admin_user_change_password.go:74:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s's password has been successfully updated!\n", user.Name)
^
cmd/admin_user_create.go:109:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("generated random password is '%s'\n", password)
^
cmd/admin_user_create.go:164:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Access token was successfully created... %s\n", t.Token)
^
cmd/admin_user_create.go:167:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("New user '%s' has been successfully created!\n", username)
^
cmd/admin_user_generate_access_token.go:74:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s\n", t.Token)
^
cmd/admin_user_generate_access_token.go:76:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Access token was successfully created: %s\n", t.Token)
^
cmd/admin_user_must_change_password.go:56:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Updated %d users setting MustChangePassword to %t\n", n, mustChangePassword)
^
cmd/convert.go:44:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("Converted successfully, please confirm your database's character set is now utf8mb4")
^
cmd/convert.go:50:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("Converted successfully, please confirm your database's all columns character is NVARCHAR now")
^
cmd/convert.go:52:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("This command can only be used with a MySQL or MSSQL database")
^
cmd/doctor.go:104:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(err)
^
cmd/doctor.go:105:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("Check if you are using the right config file. You can use a --config directive to specify one.")
^
cmd/doctor.go:243:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(err)
^
cmd/embedded.go:154:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(a.path)
^
cmd/embedded.go:198:3: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("Using app.ini at", setting.CustomConf)
^
cmd/embedded.go:217:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Extracting to %s:\n", destdir)
^
cmd/embedded.go:253:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s already exists; skipped.\n", dest)
^
cmd/embedded.go:275:2: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(dest)
^
cmd/generate.go:63:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s", internalToken)
^
cmd/generate.go:66:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("\n")
^
cmd/generate.go:78:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s", JWTSecretBase64)
^
cmd/generate.go:81:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("\n")
^
cmd/generate.go:93:2: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s", secretKey)
^
cmd/generate.go:96:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("\n")
^
cmd/keys.go:74:2: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println(strings.TrimSpace(authorizedString))
^
cmd/mailer.go:32:4: use of `fmt.Print` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Print("warning: Content is empty")
^
cmd/mailer.go:35:3: use of `fmt.Print` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Print("Proceed with sending email? [Y/n] ")
^
cmd/mailer.go:40:4: use of `fmt.Println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Println("The mail was not sent")
^
cmd/mailer.go:49:9: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
_, _ = fmt.Printf("Sent %s email(s) to all users\n", respText)
^
cmd/serv.go:147:3: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println("Gitea: SSH has been disabled")
^
cmd/serv.go:153:4: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("error showing subcommand help: %v\n", err)
^
cmd/serv.go:175:4: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println("Hi there! You've successfully authenticated with the deploy key named " + key.Name + ", but Gitea does not provide shell access.")
^
cmd/serv.go:177:4: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println("Hi there! You've successfully authenticated with the principal " + key.Content + ", but Gitea does not provide shell access.")
^
cmd/serv.go:179:4: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println("Hi there, " + user.Name + "! You've successfully authenticated with the key named " + key.Name + ", but Gitea does not provide shell access.")
^
cmd/serv.go:181:3: use of `println` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
println("If this is unexpected, please log in with password and setup Gitea under another user.")
^
cmd/serv.go:196:5: use of `fmt.Print` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Print(`{"type":"gitea","version":1}`)
^
tests/e2e/e2e_test.go:54:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Error initializing test database: %v\n", err)
^
tests/e2e/e2e_test.go:63:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("util.RemoveAll: %v\n", err)
^
tests/e2e/e2e_test.go:67:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Unable to remove repo indexer: %v\n", err)
^
tests/e2e/e2e_test.go:109:6: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%v", stdout.String())
^
tests/e2e/e2e_test.go:110:6: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%v", stderr.String())
^
tests/e2e/e2e_test.go:113:6: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%v", stdout.String())
^
tests/integration/integration_test.go:124:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Error initializing test database: %v\n", err)
^
tests/integration/integration_test.go:135:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("util.RemoveAll: %v\n", err)
^
tests/integration/integration_test.go:139:3: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("Unable to remove repo indexer: %v\n", err)
^
tests/integration/repo_test.go:357:4: use of `fmt.Printf` forbidden by pattern `^(fmt\.Print(|f|ln)|print|println)$` (forbidigo)
fmt.Printf("%s", resp.Body)
^
```
</details>
---------
Co-authored-by: Giteabot <teabot@gitea.io>
There have been a number of reports of PRs being blocked whilst being
checked which have been difficult to debug. In investigating #23050 I
have realised that whilst the Warn there is somewhat of a miscall there
was a real bug in the way that the LevelUniqueQueue was being restored
on start-up of the PersistableChannelUniqueQueue.
Next there is a conflict in the setting of the internal leveldb queue
name - This wasn't being set so it was being overridden by other unique
queues.
This PR fixes these bugs and adds a testcase.
Thanks to @brechtvl for noticing the second issue.
Fix #23050
and others
---------
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
There are a few places in FlushQueueWithContext which make an incorrect
assumption about how `select` on multiple channels works.
The problem is best expressed by looking at the following example:
```go
package main
import "fmt"
func main() {
closedChan := make(chan struct{})
close(closedChan)
toClose := make(chan struct{})
count := 0
for {
select {
case <-closedChan:
count++
fmt.Println(count)
if count == 2 {
close(toClose)
}
case <-toClose:
return
}
}
}
```
This PR double-checks that the contexts are closed outside of checking
if there is data in the dataChan. It also rationalises the WorkerPool
FlushWithContext because the previous implementation failed to handle
pausing correctly. This will probably fix the underlying problem in
#22145
Fix #22145
Signed-off-by: Andrew Thornton <art27@cantab.net>
Signed-off-by: Andrew Thornton <art27@cantab.net>
Change all license headers to comply with REUSE specification.
Fix #16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
A testing cleanup.
This pull request replaces `os.MkdirTemp` with `t.TempDir`. We can use the `T.TempDir` function from the `testing` package to create temporary directory. The directory created by `T.TempDir` is automatically removed when the test and all its subtests complete.
This saves us at least 2 lines (error check, and cleanup) on every instance, or in some cases adds cleanup that we forgot.
Reference: https://pkg.go.dev/testing#T.TempDir
```go
func TestFoo(t *testing.T) {
// before
tmpDir, err := os.MkdirTemp("", "")
require.NoError(t, err)
defer os.RemoveAll(tmpDir)
// now
tmpDir := t.TempDir()
}
```
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
- Doing 64-bit atomic operations on 32-bit machines is a bit tricky by
golang, as they can only be done under certain set of
conditions(https://pkg.go.dev/sync/atomic#pkg-note-BUG).
- This PR fixes such case whereby the conditions weren't met, it moves
the int64 to the first field of the struct, which will 64-bit operations
happening on this property on 32-bit machines.
- Resolves #19518
There appears to be an intermittent NPE in queue tests relating to the deferred
shutdown/terminate functions.
This PR more formally asserts that shutdown and termination occurs before starting
and finishing the tests but leaves the defer in place to ensure that if there is an
issue shutdown/termination will occur.
Signed-off-by: Andrew Thornton <art27@cantab.net>
Continues on from #19202.
Following the addition of pprof labels we can now more easily understand the relationship between a goroutine and the requests that spawn them.
This PR takes advantage of the labels and adds a few others, then provides a mechanism for the monitoring page to query the pprof goroutine profile.
The binary profile that results from this profile is immediately piped in to the google library for parsing this and then stack traces are formed for the goroutines.
If the goroutine is within a context or has been created from a goroutine within a process context it will acquire the process description labels for that process.
The goroutines are mapped with there associate pids and any that do not have an associated pid are placed in a group at the bottom as unbound.
In this way we should be able to more easily examine goroutines that have been stuck.
A manager command `gitea manager processes` is also provided that can export the processes (with or without stacktraces) to the command line.
Signed-off-by: Andrew Thornton <art27@cantab.net>
Add number in queue status to the monitor page so that administrators can
assess how much work is left to be done in the queues.
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
* Simplify Boost/Pause logic
#18658 has added a check to see if we need to boost because there is still work to do
however the check is slightly complex and not ideal. There's no point boosting if
the queue is paused or can't scale. Therefore merge the two selects into one and add
a check to p.paused.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* And on resume add a zeroboost if necessary
Signed-off-by: Andrew Thornton <art27@cantab.net>
* simplify
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
* Restart zero worker if there is still work to do
It is possible for the zero worker to timeout before all the work is finished.
This may mean that work may take a long time to complete because a worker will only
be induced on repushing.
Also ensure that requested count is reset after pulls and push mirror sync requests and add some more trace logging to the queue push.
Fix #18607
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Only attempt to flush queue if the underlying worker pool is not finished
There is a possible race whereby a worker pool could be cancelled but yet the
underlying queue is not empty. This will lead to flush-all cycling because it
cannot empty the pool.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Apply suggestions from code review
Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* Change some logging levels
* PlainTextWithBytes - 4xx/5xx this should just be TRACE
* notFoundInternal - the "error" here is too noisy and should be DEBUG
* WorkerPool - Worker pool scaling messages are normal and should be DEBUG
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
* Attempt to prevent the deadlock in the QueueDiskChannel Test again
This time we're going to adjust the pause tests to only test the right
flag.
* Only switch off pushback once we know that we are not pushing anything else
* Ensure full redirection occurs
* More nicely handle a closed datachan
* And handle similar problems in queue_channel_test
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Prevent deadlocks in persistable channel pause test
Because of reuse of the old paused/resumed channels in this test there
was a potential for deadlock. This PR ensures that the channels are always
reobtained.
It further adds some control code to detect hangs in future - and it
ensures that the pausing warning is not shown on shutdown.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* do not warn but do pause
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Start adding mechanism to return unhandled data
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Create pushback interface
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Add Pausable interface to WorkerPool and Manager
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Implement Pausable and PushBack for the bytefifos
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Implement Pausable and Pushback for ChannelQueues and ChannelUniqueQueues
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Wire in UI for pausing
Signed-off-by: Andrew Thornton <art27@cantab.net>
* add testcases and fix a few issues
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix build
Signed-off-by: Andrew Thornton <art27@cantab.net>
* prevent "race" in the test
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix jsoniter mismerge
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix conflicts
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix format
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Add warnings for no worker configurations and prevent data-loss with redis/levelqueue
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Use StopTimer
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
* Prevent deadlock in TestPersistableChannelQueue
There is a potential deadlock in TestPersistableChannelQueue due to attempting to
shutdown the test queue before it is ready.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* prevent npe
Signed-off-by: Andrew Thornton <art27@cantab.net>
Convert the old mirror syncing queue to the more modern queue format.
Fix a bug in the from the repo-archive queue PR - the assumption was made that uniqueness could be enforced with by checking equality in a map in channel unique queues - however this only works for primitive types - which was the initial intention but is an imperfect. This is fixed by marshalling the data and placing the martialled data in the unique map instead.
The documentation is also updated to add information about the deprecated configuration values.
Signed-off-by: Andrew Thornton <art27@cantab.net>
The io/ioutil package has been deprecated as of Go 1.16, see
https://golang.org/doc/go1.16#ioutil. This commit replaces the existing
io/ioutil functions with their new definitions in io and os packages.
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
* Timeout on flush in testing
At the end of each test the queues are flushed. At present there is no limit on the
length of time a flush can take which can lead to long flushes.
However, if the CI task is cancelled we lose the log information as to where the long
flush was taking place.
This PR simply adds a default time limit of 2 minutes - at which point an error will
be produced. This should allow us to more easily find the culprit.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* return better error
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
A race has been detected in #1441 relating to getting log levels.
This PR protects the GetLevel and GetStacktraceLevel calls with a RW mutex.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Prevent race in TestPersistableChannelQueue
A slight race has become apparent in the TestPersistableChannelQueue.
This PR simply adds locking to prevent the race.
* make print value of "$(GOTESTFLAGS)" on test-backend and unit-test-coverage
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
* move shutdownfns, terminatefns and hammerfns out of separate goroutines
Coalesce the shutdownfns etc into a list of functions that get run at shutdown
rather then have them run at goroutines blocked on selects.
This may help reduce the background select/poll load in certain
configurations.
* The LevelDB queues can actually wait on empty instead of polling
Slight refactor to cause leveldb queues to wait on empty instead of polling.
* Shutdown the shadow level queue once it is empty
* Remove bytefifo additional goroutine for readToChan as it can just be run in run
* Remove additional removeWorkers goroutine for workers
* Simplify the AtShutdown and AtTerminate functions and add Channel Flusher
* Add shutdown flusher to CUQ
* move persistable channel shutdown stuff to Shutdown Fn
* Ensure that UPCQ has the correct config
* handle shutdown during the flushing
* reduce risk of race between zeroBoost and addWorkers
* prevent double shutdown
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Queue manager FlushAll can loop rapidly - add delay
Add delay within FlushAll to prevent rapid loop when workers are busy
Signed-off-by: Andrew Thornton <art27@cantab.net>
* as per lunny
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
This PR is another in the vein of queue improvements. It suggests an
exponential backoff for bytefifo queues to reduce the load from queue
polling. This will mostly be useful for redis queues.
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
There is a potential race in TestChannelQueue_Batch due to boost workers starting up
This PR simply removes the boosts from this test.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* The leveldb shadow queue of a persistable channel queue should always start with 0
workers and just use boost to add additional workers if necessary.
* create a zero boost so that if there are no workers in a pool - boost to start the workers
* actually set timeout appropriately on boosted workers
Signed-off-by: Andrew Thornton <art27@cantab.net>
The issue is that the TestPatch will reset the PR MergeBase - and it is possible for TestPatch to update the MergeBase whilst a merge is ongoing. The ensuing merge will then complete but it doesn't re-set the MergeBase it used to merge the PR.
Fixes the intermittent error in git test.
Signed-off-by: Andrew Thornton art27@cantab.net
* _ to unused func options
* rm useless brakets
* rm trifial non used models functions
* rm dead code
* rm dead global vars
* fix routers/api/v1/repo/issue.go
* dont overload import module
There is potentially a race with a slow starting internal
queue causing a NPE if Has is checked before the internal
queue has been setup.
This PR adds a lock on the Has() fn.
Fix #14311
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Update go-redis to v8.4.0
* github.com/go-redis/redis/v8 v8.4.0 -> v8.5.0
* Apply suggestions from code review
Co-authored-by: zeripath <art27@cantab.net>
* TODO
* Use the Queue termination channel as the default context for pushes
Signed-off-by: Andrew Thornton <art27@cantab.net>
* missed one
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: zeripath <art27@cantab.net>
