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Find non-virtual ExecutorService creation

org.openrewrite.java.migrate.lang.FindNonVirtualExecutors

Find all places where static java.util.concurrent.Executors method creates a non-virtual java.util.concurrent.ExecutorService. This recipe can be used to search fro ExecutorService that can be replaced by Virtual Thread executor.

Tags​

  • java21
  • virtual_threads

Recipe source​

GitHub, Issue Tracker, Maven Central

info

This recipe is composed of more than one recipe. If you want to customize the set of recipes this is composed of, you can find and copy the GitHub source for the recipe from the link above.

This recipe is available under the Moderne Source Available License.

Definition​

  • Find method usages
    • methodPattern: java.util.concurrent.Executors#newCachedThreadPool(..)
  • Find method usages
    • methodPattern: java.util.concurrent.Executors#newFixedThreadPool(..)
  • Find method usages
    • methodPattern: java.util.concurrent.Executors#newSingleThreadExecutor(..)
  • Find method usages
    • methodPattern: java.util.concurrent.Executors#newWorkStealingPool(..)
  • Find method usages
    • methodPattern: java.util.concurrent.Executors#newScheduledThreadPool(..)
  • Find method usages
    • methodPattern: java.util.concurrent.Executors#newSingleThreadScheduledExecutor(..)

Usage​

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-migrate-java in your build file or by running a shell command (in which case no build changes are needed):

  1. Add the following to your build.gradle file:
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("org.openrewrite.java.migrate.lang.FindNonVirtualExecutors")
    setExportDatatables(true)
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-migrate-java:3.12.0")
}
  1. Run gradle rewriteRun to run the recipe.

See how this recipe works across multiple open-source repositories​

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Data Tables​

Method calls​

org.openrewrite.java.table.MethodCalls

The text of matching method invocations.

Column NameDescription
Source fileThe source file that the method call occurred in.
Method callThe text of the method call.
Class nameThe class name of the method call.
Method nameThe method name of the method call.
Argument typesThe argument types of the method call.