org.apache.flink.runtime.util.Runnables Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.util;
import org.apache.flink.util.FatalExitExceptionHandler;
/** Utils related to {@link Runnable}. */
public class Runnables {
/**
* Asserts that the given {@link Runnable} does not throw exceptions. If the runnable throws
* exceptions, then it will call the {@link FatalExitExceptionHandler}.
*
* @param runnable to assert for no exceptions
*/
public static void assertNoException(Runnable runnable) {
withUncaughtExceptionHandler(runnable, FatalExitExceptionHandler.INSTANCE).run();
}
/**
* Guard {@link Runnable} with uncaughtException handler, because {@link
* java.util.concurrent.ScheduledExecutorService} does not respect the one assigned to executing
* {@link Thread} instance.
*
* @param runnable Runnable future to guard.
* @param uncaughtExceptionHandler Handler to call in case of uncaught exception.
* @return Future with handler.
*/
public static Runnable withUncaughtExceptionHandler(
Runnable runnable, Thread.UncaughtExceptionHandler uncaughtExceptionHandler) {
return () -> {
try {
runnable.run();
} catch (Throwable t) {
uncaughtExceptionHandler.uncaughtException(Thread.currentThread(), t);
}
};
}
}