spring ThreadDumpEndpoint 源码
springboot ThreadDumpEndpoint 代码
文件路径：/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/management/ThreadDumpEndpoint.java
/*
* Copyright 2012-2022 the original author or authors.
*
* 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
*
* https://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.springframework.boot.actuate.management;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
import org.springframework.core.NativeDetector;
/**
* {@link Endpoint @Endpoint} to expose thread info.
*
* @author Dave Syer
* @author Andy Wilkinson
* @since 2.0.0
*/
@Endpoint(id = "threaddump")
public class ThreadDumpEndpoint {
private final PlainTextThreadDumpFormatter plainTextFormatter = new PlainTextThreadDumpFormatter();
@ReadOperation
public ThreadDumpDescriptor threadDump() {
return getFormattedThreadDump(ThreadDumpDescriptor::new);
}
@ReadOperation(produces = "text/plain;charset=UTF-8")
public String textThreadDump() {
return getFormattedThreadDump(this.plainTextFormatter::format);
}
private <T> T getFormattedThreadDump(Function<ThreadInfo[], T> formatter) {
ThreadDumper threadDumper = createThreadDumper();
return formatter.apply(threadDumper.dumpAllThreads());
}
private ThreadDumper createThreadDumper() {
if (NativeDetector.inNativeImage()) {
throw new ThreadDumperUnavailableException("Running in native image");
}
return new ThreadMXBeanThreadDumper();
}
private interface ThreadDumper {
ThreadInfo[] dumpAllThreads();
}
private static class ThreadMXBeanThreadDumper implements ThreadDumper {
@Override
public ThreadInfo[] dumpAllThreads() {
return ManagementFactory.getThreadMXBean().dumpAllThreads(true, true);
}
}
/**
* Exception to be thrown if the {@link ThreadDumper} cannot be created.
*/
static class ThreadDumperUnavailableException extends RuntimeException {
ThreadDumperUnavailableException(String message) {
super(message);
}
}
/**
* A description of a thread dump. Primarily intended for serialization to JSON.
*/
public static final class ThreadDumpDescriptor {
private final List<ThreadInfo> threads;
private ThreadDumpDescriptor(ThreadInfo[] threads) {
this.threads = Arrays.asList(threads);
}
public List<ThreadInfo> getThreads() {
return this.threads;
}
}
}
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- 本文标签： Spring Boot Java Spring
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