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Configure WebFlux's blocking execution to use applicationTaskExecutor

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Closes gh-36331
This commit is contained in:
Andy Wilkinson
2023-07-18 10:18:37 +01:00
parent ae6b1f91f6
commit d205d10519
3 changed files with 94 additions and 3 deletions
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6
spring-boot-project/spring-boot-docs/src/docs/asciidoc/features/task-execution-and-scheduling.adoc
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@@ -3,12 +3,12 @@
In the absence of an `Executor` bean in the context, Spring Boot auto-configures an `AsyncTaskExecutor`.
When virtual threads are enabled (using Java 21+ and configprop:spring.threads.virtual.enabled[] set to `true`) this will be a `SimpleAsyncTaskExecutor` that uses virtual threads.
Otherwise, it will be a `ThreadPoolTaskExecutor` with sensible defaults.
In either case, the auto-configured executor will be automatically used for asynchronous task execution (`@EnableAsync`) and Spring MVC asynchronous request processing.
In either case, the auto-configured executor will be automatically used for asynchronous task execution (`@EnableAsync`), Spring MVC asynchronous request processing, and Spring WebFlux blocking execution.
[TIP]
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If you have defined a custom `Executor` in the context, regular task execution (that is `@EnableAsync`) will use it transparently but the Spring MVC support will not be configured as it requires an `AsyncTaskExecutor` implementation (named `applicationTaskExecutor`).
Depending on your target arrangement, you could change your `Executor` into a `ThreadPoolTaskExecutor` or define both a `ThreadPoolTaskExecutor` and an `AsyncConfigurer` wrapping your custom `Executor`.
If you have defined a custom `Executor` in the context, regular task execution (that is `@EnableAsync`) will use it transparently but the Spring MVC and Spring WebFlux support will not be configured as they require an `AsyncTaskExecutor` implementation (named `applicationTaskExecutor`).
Depending on your target arrangement, you could change your `Executor` into an `AsyncTaskExecutor` or define both an `AsyncTaskExecutor` and an `AsyncConfigurer` wrapping your custom `Executor`.
The auto-configured `TaskExecutorBuilder` allows you to easily create instances that reproduce what the auto-configuration does by default.
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