org.apache.jackrabbit.oak.segment.file.SafeRunnable Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* 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, 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 org.apache.jackrabbit.oak.segment.file;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.lang.Thread.currentThread;
import org.jetbrains.annotations.NotNull;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A {@code Runnable} implementation that is safe to submit to an executor or
* {@link Scheduler}.
*
* When this implementation's {@link #run()} method is invoked, it will set the
* name of the current thread to the name passed to {@link SafeRunnable}, run
* the wrapped runnable and finally restore the initial thread name. When the
* wrapped runnable throws any unhandled exception, this exception is logged at
* error level and the exception is re-thrown.
*/
class SafeRunnable implements Runnable {
private static final Logger log = LoggerFactory.getLogger(SafeRunnable.class);
@NotNull
private final String name;
@NotNull
private final Runnable runnable;
/**
* New instance with the given {@code name} wrapping the passed {@code
* runnable}.
*
* @param name The name of the background operation.
* @param runnable The background operation.
*/
SafeRunnable(@NotNull String name, @NotNull Runnable runnable) {
this.name = checkNotNull(name);
this.runnable = checkNotNull(runnable);
}
@Override
public void run() {
try {
String n = currentThread().getName();
currentThread().setName(name);
try {
runnable.run();
} finally {
currentThread().setName(n);
}
} catch (Throwable e) {
log.error(String.format("Uncaught exception in %s", name), e);
}
}
}