org.apache.flink.runtime.messages.ThreadInfoSample 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.flink.runtime.messages;
import javax.annotation.Nullable;
import java.io.Serializable;
import java.lang.management.ThreadInfo;
import java.util.Optional;
/**
* A serializable wrapper container for transferring parts of the {@link
* java.lang.management.ThreadInfo}.
*/
public class ThreadInfoSample implements Serializable {
private final Thread.State threadState;
private final StackTraceElement[] stackTrace;
private ThreadInfoSample(Thread.State threadState, StackTraceElement[] stackTrace) {
this.threadState = threadState;
this.stackTrace = stackTrace;
}
/**
* Constructs a {@link ThreadInfoSample} from {@link ThreadInfo}.
*
* @param threadInfo {@link ThreadInfo} where the data will be copied from.
* @return an Optional containing the {@link ThreadInfoSample} if the {@code threadInfo} is not
* null and an empty Optional otherwise.
*/
public static Optional from(@Nullable ThreadInfo threadInfo) {
if (threadInfo != null) {
return Optional.of(
new ThreadInfoSample(threadInfo.getThreadState(), threadInfo.getStackTrace()));
} else {
return Optional.empty();
}
}
public Thread.State getThreadState() {
return threadState;
}
public StackTraceElement[] getStackTrace() {
return stackTrace.clone();
}
}