6 Commits (2d0ff00823bf92ee32df107416fd30010638f21d)

Author	SHA1	Message	Date
Lunny Xiao	c355728a6f	Remove unnecessary code (#24610) ... As title, remove unnecessary code.	2 years ago
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: 	2 years ago
Lunny Xiao	377a0a20f0	Merge setting.InitXXX into one function with options (#24389) ... This PR will merge 3 Init functions on setting packages as 1 and introduce an options struct.	2 years ago
Lunny Xiao	5cf7da63ee	Refactor config provider (#24245) ... This PR introduces more abstract about `ConfigProvider` and hides more `ini` references. --------- Co-authored-by: delvh <dev.lh@web.de>	2 years ago
Lunny Xiao	d845be661f	handle deprecated settings (#22992) ... Fix #22736	2 years ago
Lunny Xiao	c53ad052d8	Refactor the setting to make unit test easier (#22405) ... Some bugs caused by less unit tests in fundamental packages. This PR refactor `setting` package so that create a unit test will be easier than before. - All `LoadFromXXX` files has been splited as two functions, one is `InitProviderFromXXX` and `LoadCommonSettings`. The first functions will only include the code to create or new a ini file. The second function will load common settings. - It also renames all functions in setting from `newXXXService` to `loadXXXSetting` or `loadXXXFrom` to make the function name less confusing. - Move `XORMLog` to `SQLLog` because it's a better name for that. Maybe we should finally move these `loadXXXSetting` into the `XXXInit` function? Any idea? --------- Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: delvh <dev.lh@web.de>	2 years ago