hzh0425 opened a new pull request, #4272: URL: https://github.com/apache/rocketmq/pull/4272
## What is the purpose of the change We want unified log replication, using rocketmq's original HaService instead of dledger mode. Previously, I have done the following job with @RongtongJin - Add statemachine mode for dledger: https://github.com/openmessaging/dledger/pull/128 - Embed a strongly consistent controller based on dledger in name-srv: https://github.com/apache/rocketmq/pull/4195 - Add a new HaService -- AutoSwitchHAService, which use new log replicating protocol to support switch role in haService level.: https://github.com/apache/rocketmq/pull/4236 This pr is the last pr: connecting the interface of Dledger-controller at the Broker level, so that the Broker has the ability of master-slave switching Noted that this Pr is still in development and not fully completed. ## Brief changelog The architecture is shown in the figure below. The pr is a link between the 'DledgerController' and 'AutoSwitchHASerivce' through a new component - ReplicasManager, it connects to the api of the controller and notifies the lower AutoSwitchHASerivce. <img width="691" alt="image" src="https://user-images.githubusercontent.com/58988019/167562365-a083f415-1701-425f-92cc-eb72eb2b3f0c.png";> ## Verifying this change Follow this checklist to help us incorporate your contribution quickly and easily. Notice, `it would be helpful if you could finish the following 5 checklist(the last one is not necessary)before request the community to review your PR`. - [x] Make sure there is a [Github issue](https://github.com/apache/rocketmq/issues) filed for the change (usually before you start working on it). Trivial changes like typos do not require a Github issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue. - [x] Format the pull request title like `[ISSUE #123] Fix UnknownException when host config not exist`. Each commit in the pull request should have a meaningful subject line and body. - [x] Write a pull request description that is detailed enough to understand what the pull request does, how, and why. - [x] Write necessary unit-test(over 80% coverage) to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in [test module](https://github.com/apache/rocketmq/tree/master/test). - [x] Run `mvn -B clean apache-rat:check findbugs:findbugs checkstyle:checkstyle` to make sure basic checks pass. Run `mvn clean install -DskipITs` to make sure unit-test pass. Run `mvn clean test-compile failsafe:integration-test` to make sure integration-test pass. - [ ] If this contribution is large, please file an [Apache Individual Contributor License Agreement](http://www.apache.org/licenses/#clas). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
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