walterddr opened a new pull request #10836: [FLINK-11589][Security] Support security module and context discovery via ServiceLoader URL: https://github.com/apache/flink/pull/10836 ## What is the purpose of the change This PR refactors `SecurityUtils.class` in `flink-runtime` and replace with an extendable module based on the [service provider pattern](https://docs.oracle.com/javase/tutorial/sound/SPI-intro.html). With this extension, users can {create extendable security modules](https://docs.oracle.com/javase/tutorial/ext/basics/spi.html) with 3rd-party implementations. ## Brief change log - Added SecurityFactoryService class for discovering installed SecurityFactory(s) in the classpath. - Extended into SecurityModuleFactory and SecurityContextFactory. - Replace SecurityUtils with SecurityEnvironment class that holds all installed security-related objects. - Replace current security installation process with a 2-step installation - first install security module(s) per user-defined properties, then install security context based on security modules and properties - Refactored current Hadoop/JaaS/Zookeeper modules into extendable class. ## Verifying this change This change is already covered by existing tests in `flink-runtime` and ITCases in YARN and Kafka modules, also added to the tests: - Modified YARN and Kafka test modules to install modules/context through service provider discovery - Included test module factories and a default security context factory in test path. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - changes CLI options though - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: yes - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? yes - If yes, how is the feature documented? CLI doc updated
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