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Added synthetic bean with @VirtualThreads qualifier for the managed E…
…xecutorService backed by virtual threads
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88 changes: 88 additions & 0 deletions
88
...l-threads/runtime/src/main/java/io/quarkus/virtual/threads/DelegatingExecutorService.java
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package io.quarkus.virtual.threads; | ||
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import java.util.Collection; | ||
import java.util.List; | ||
import java.util.concurrent.Callable; | ||
import java.util.concurrent.ExecutionException; | ||
import java.util.concurrent.ExecutorService; | ||
import java.util.concurrent.Future; | ||
import java.util.concurrent.TimeUnit; | ||
import java.util.concurrent.TimeoutException; | ||
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/** | ||
* An implementation of {@code ExecutorService} that delegates to the real executor, while disallowing termination. | ||
*/ | ||
class DelegatingExecutorService implements ExecutorService { | ||
private final ExecutorService delegate; | ||
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DelegatingExecutorService(final ExecutorService delegate) { | ||
this.delegate = delegate; | ||
} | ||
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public void execute(final Runnable command) { | ||
delegate.execute(command); | ||
} | ||
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public boolean isShutdown() { | ||
// container managed executors are never shut down from the application's perspective | ||
return false; | ||
} | ||
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public boolean isTerminated() { | ||
// container managed executors are never shut down from the application's perspective | ||
return false; | ||
} | ||
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public boolean awaitTermination(final long timeout, final TimeUnit unit) { | ||
return false; | ||
} | ||
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public void shutdown() { | ||
throw new RuntimeException("shutdown not allowed on managed executor service"); | ||
} | ||
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public List<Runnable> shutdownNow() { | ||
throw new RuntimeException("shutdownNow not allowed on managed executor service"); | ||
} | ||
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@Override | ||
public <T> Future<T> submit(Callable<T> task) { | ||
return delegate.submit(task); | ||
} | ||
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@Override | ||
public <T> Future<T> submit(Runnable task, T result) { | ||
return delegate.submit(task, result); | ||
} | ||
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@Override | ||
public Future<?> submit(Runnable task) { | ||
return delegate.submit(task); | ||
} | ||
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@Override | ||
public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) throws InterruptedException { | ||
return delegate.invokeAll(tasks); | ||
} | ||
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@Override | ||
public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) | ||
throws InterruptedException { | ||
return delegate.invokeAll(tasks, timeout, unit); | ||
} | ||
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@Override | ||
public <T> T invokeAny(Collection<? extends Callable<T>> tasks) throws InterruptedException, ExecutionException { | ||
return delegate.invokeAny(tasks); | ||
} | ||
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@Override | ||
public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) | ||
throws InterruptedException, ExecutionException, TimeoutException { | ||
return delegate.invokeAny(tasks, timeout, unit); | ||
} | ||
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public String toString() { | ||
return delegate.toString(); | ||
} | ||
} |
58 changes: 58 additions & 0 deletions
58
...ntime/src/main/java/io/quarkus/virtual/threads/FallbackVirtualThreadsExecutorService.java
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package io.quarkus.virtual.threads; | ||
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import java.util.Collections; | ||
import java.util.List; | ||
import java.util.concurrent.AbstractExecutorService; | ||
import java.util.concurrent.TimeUnit; | ||
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import io.smallrye.mutiny.infrastructure.Infrastructure; | ||
import io.vertx.core.Vertx; | ||
import io.vertx.core.impl.ContextInternal; | ||
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/** | ||
* Fallback executor service implementation in case the virtual threads are disabled or not available on the current platform. | ||
* <p> | ||
* Executes tasks on the current Vert.x context worker pool. or when not available on the Mutiny Infrastructure default worker | ||
* pool | ||
* Shutdown methods are no-op as the executor service is a wrapper around these previous execute methods. | ||
*/ | ||
class FallbackVirtualThreadsExecutorService extends AbstractExecutorService { | ||
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@Override | ||
public void execute(Runnable command) { | ||
var context = Vertx.currentContext(); | ||
if (!(context instanceof ContextInternal)) { | ||
Infrastructure.getDefaultWorkerPool().execute(command); | ||
} else { | ||
context.executeBlocking(() -> { | ||
command.run(); | ||
return null; | ||
}, false); | ||
} | ||
} | ||
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@Override | ||
public void shutdown() { | ||
// no-op | ||
} | ||
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@Override | ||
public List<Runnable> shutdownNow() { | ||
return Collections.EMPTY_LIST; | ||
} | ||
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@Override | ||
public boolean isShutdown() { | ||
return false; | ||
} | ||
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@Override | ||
public boolean isTerminated() { | ||
return false; | ||
} | ||
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@Override | ||
public boolean awaitTermination(long timeout, TimeUnit unit) { | ||
return false; | ||
} | ||
} |
39 changes: 39 additions & 0 deletions
39
...ions/virtual-threads/runtime/src/main/java/io/quarkus/virtual/threads/VirtualThreads.java
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package io.quarkus.virtual.threads; | ||
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import static java.lang.annotation.ElementType.FIELD; | ||
import static java.lang.annotation.ElementType.METHOD; | ||
import static java.lang.annotation.ElementType.PARAMETER; | ||
import static java.lang.annotation.RetentionPolicy.RUNTIME; | ||
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import java.lang.annotation.Retention; | ||
import java.lang.annotation.Target; | ||
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import jakarta.enterprise.util.AnnotationLiteral; | ||
import jakarta.inject.Qualifier; | ||
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/** | ||
* Qualifies an injected virtual threads executor service. | ||
*/ | ||
@Qualifier | ||
@Target({ FIELD, METHOD, PARAMETER }) | ||
@Retention(RUNTIME) | ||
public @interface VirtualThreads { | ||
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final class Literal extends AnnotationLiteral<VirtualThreads> implements VirtualThreads { | ||
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private static final long serialVersionUID = 1L; | ||
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/** | ||
* Creates a new instance of {@link Literal}. | ||
* | ||
* @return the literal instance. | ||
*/ | ||
public static Literal of() { | ||
return new Literal(); | ||
} | ||
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private Literal() { | ||
} | ||
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} | ||
} |
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