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# ⚠️ 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: 
108 lines
3.3 KiB
Handlebars
108 lines
3.3 KiB
Handlebars
APP_NAME = Gitea: Git with a cup of tea
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RUN_MODE = prod
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[database]
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DB_TYPE = mysql
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HOST = {{TEST_MYSQL8_HOST}}
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NAME = {{TEST_MYSQL8_DBNAME}}
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USER = {{TEST_MYSQL8_USERNAME}}
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PASSWD = {{TEST_MYSQL8_PASSWORD}}
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SSL_MODE = disable
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[indexer]
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REPO_INDEXER_ENABLED = true
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REPO_INDEXER_PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/indexers/repos.bleve
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[queue.issue_indexer]
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TYPE = level
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DATADIR = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/indexers/issues.queue
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[queue]
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TYPE = immediate
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[queue.code_indexer]
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TYPE = immediate
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[queue.push_update]
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TYPE = immediate
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[repository]
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ROOT = {{REPO_TEST_DIR}}tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/gitea-repositories
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[repository.local]
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LOCAL_COPY_PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/tmp/local-repo
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[repository.upload]
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TEMP_PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/tmp/uploads
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[repository.signing]
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SIGNING_KEY = none
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[server]
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SSH_DOMAIN = localhost
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HTTP_PORT = 3004
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ROOT_URL = http://localhost:3004/
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DISABLE_SSH = false
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SSH_LISTEN_HOST = localhost
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SSH_PORT = 2204
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START_SSH_SERVER = true
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LFS_START_SERVER = true
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OFFLINE_MODE = false
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LFS_JWT_SECRET = Tv_MjmZuHqpIY6GFl12ebgkRAMt4RlWt0v4EHKSXO0w
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APP_DATA_PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/data
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BUILTIN_SSH_SERVER_USER = git
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SSH_TRUSTED_USER_CA_KEYS = ssh-rsa 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[attachment]
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PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/data/attachments
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[mailer]
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ENABLED = false
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[service]
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REGISTER_EMAIL_CONFIRM = false
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REGISTER_MANUAL_CONFIRM = false
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ENABLE_NOTIFY_MAIL = false
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DISABLE_REGISTRATION = false
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ENABLE_CAPTCHA = false
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REQUIRE_SIGNIN_VIEW = false
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DEFAULT_KEEP_EMAIL_PRIVATE = false
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DEFAULT_ALLOW_CREATE_ORGANIZATION = true
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NO_REPLY_ADDRESS = noreply.example.org
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[picture]
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DISABLE_GRAVATAR = false
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ENABLE_FEDERATED_AVATAR = false
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AVATAR_UPLOAD_PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/data/avatars
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REPOSITORY_AVATAR_UPLOAD_PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/data/repo-avatars
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[session]
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PROVIDER = file
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PROVIDER_CONFIG = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/data/sessions
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[log]
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MODE = {{TEST_LOGGER}}
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ROOT_PATH = {{REPO_TEST_DIR}}mysql8-log
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ROUTER = ,
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XORM = file
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ENABLE_SSH_LOG = true
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[log.test]
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LEVEL = Info
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COLORIZE = true
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[log.file]
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LEVEL = Debug
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[security]
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DISABLE_GIT_HOOKS = false
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INSTALL_LOCK = true
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SECRET_KEY = 9pCviYTWSb
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INTERNAL_TOKEN = eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYmYiOjE0OTU1NTE2MTh9.hhSVGOANkaKk3vfCd2jDOIww4pUk0xtg9JRde5UogyQ
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[lfs]
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PATH = tests/{{TEST_TYPE}}/gitea-{{TEST_TYPE}}-mysql8/data/lfs
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[packages]
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ENABLED = true
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