com.palantir.atlasdb.util.AnnotatedRunnable Maven / Gradle / Ivy
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/*
* (c) Copyright 2018 Palantir Technologies Inc. All rights reserved.
*
* Licensed 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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.palantir.atlasdb.util;
import com.palantir.nylon.threads.ThreadNames;
/**
* Whenever this runnable is run, for the duration of the call we will have a new thread name.
*
* This is useful for debugging because when you get thread dumps the name will reflect what runnable
* is running.
*
* Additionally, throwables emitted from the call are rewrapped to provide this custom annotation in the stack trace,
* which should hopefully provide more context to what this runnable was attempting to do.
*/
public final class AnnotatedRunnable implements Runnable {
private final Runnable delegate;
private final String name;
private final AnnotationType type;
public static Runnable replaceThreadNameWith(String threadName, Runnable delegate) {
return wrapWithThreadName(AnnotationType.REPLACE, threadName, delegate);
}
public static Runnable wrapWithThreadName(AnnotationType type, String threadName, Runnable delegate) {
return new AnnotatedRunnable(delegate, threadName, type);
}
private AnnotatedRunnable(Runnable delegate, String name, AnnotationType type) {
this.delegate = delegate;
this.name = name;
this.type = type;
}
@Override
public void run() {
final String oldName = Thread.currentThread().getName();
ThreadNames.setThreadName(Thread.currentThread(), type.join(name, oldName));
try {
delegate.run();
} catch (Throwable throwable) {
throwable.addSuppressed(SuppressedException.from(throwable));
throw throwable;
} finally {
ThreadNames.setThreadName(Thread.currentThread(), oldName);
}
}
}