spring JettyResourceFactory 源码

spring JettyResourceFactory 代码

文件路径：/spring-web/src/main/java/org/springframework/http/client/reactive/JettyResourceFactory.java

/*
 * Copyright 2002-2018 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.http.client.reactive;


import java.nio.ByteBuffer;
import java.util.concurrent.Executor;

import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.MappedByteBufferPool;
import org.eclipse.jetty.util.ProcessorUtils;
import org.eclipse.jetty.util.component.LifeCycle;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.eclipse.jetty.util.thread.ScheduledExecutorScheduler;
import org.eclipse.jetty.util.thread.Scheduler;
import org.eclipse.jetty.util.thread.ThreadPool;

import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Factory to manage Jetty resources, i.e. {@link Executor}, {@link ByteBufferPool} and
 * {@link Scheduler}, within the lifecycle of a Spring {@code ApplicationContext}.
 *
 * <p>This factory implements {@link InitializingBean} and {@link DisposableBean}
 * and is expected typically to be declared as a Spring-managed bean.
 *
 * @author Sebastien Deleuze
 * @since 5.1
 */
public class JettyResourceFactory implements InitializingBean, DisposableBean {

	@Nullable
	private Executor executor;

	@Nullable
	private ByteBufferPool byteBufferPool;

	@Nullable
	private Scheduler scheduler;

	private String threadPrefix = "jetty-http";


	/**
	 * Configure the {@link Executor} to use.
	 * <p>By default, initialized with a {@link QueuedThreadPool}.
	 * @param executor the executor to use
	 */
	public void setExecutor(@Nullable Executor executor) {
		this.executor = executor;
	}

	/**
	 * Configure the {@link ByteBufferPool} to use.
	 * <p>By default, initialized with a {@link MappedByteBufferPool}.
	 * @param byteBufferPool the {@link ByteBuffer} pool to use
	 */
	public void setByteBufferPool(@Nullable ByteBufferPool byteBufferPool) {
		this.byteBufferPool = byteBufferPool;
	}

	/**
	 * Configure the {@link Scheduler} to use.
	 * <p>By default, initialized with a {@link ScheduledExecutorScheduler}.
	 * @param scheduler the {@link Scheduler} to use
	 */
	public void setScheduler(@Nullable Scheduler scheduler) {
		this.scheduler = scheduler;
	}

	/**
	 * Configure the thread prefix to initialize {@link QueuedThreadPool} executor with. This
	 * is used only when a {@link Executor} instance isn't
	 * {@link #setExecutor(Executor) provided}.
	 * <p>By default set to "jetty-http".
	 * @param threadPrefix the thread prefix to use
	 */
	public void setThreadPrefix(String threadPrefix) {
		Assert.notNull(threadPrefix, "Thread prefix is required");
		this.threadPrefix = threadPrefix;
	}

	/**
	 * Return the configured {@link Executor}.
	 */
	@Nullable
	public Executor getExecutor() {
		return this.executor;
	}

	/**
	 * Return the configured {@link ByteBufferPool}.
	 */
	@Nullable
	public ByteBufferPool getByteBufferPool() {
		return this.byteBufferPool;
	}

	/**
	 * Return the configured {@link Scheduler}.
	 */
	@Nullable
	public Scheduler getScheduler() {
		return this.scheduler;
	}

	@Override
	public void afterPropertiesSet() throws Exception {
		String name = this.threadPrefix + "@" + Integer.toHexString(hashCode());
		if (this.executor == null) {
			QueuedThreadPool threadPool = new QueuedThreadPool();
			threadPool.setName(name);
			this.executor = threadPool;
		}
		if (this.byteBufferPool == null) {
			this.byteBufferPool = new MappedByteBufferPool(2048,
					this.executor instanceof ThreadPool.SizedThreadPool
							? ((ThreadPool.SizedThreadPool) this.executor).getMaxThreads() / 2
							: ProcessorUtils.availableProcessors() * 2);
		}
		if (this.scheduler == null) {
			this.scheduler = new ScheduledExecutorScheduler(name + "-scheduler", false);
		}

		if (this.executor instanceof LifeCycle) {
			((LifeCycle)this.executor).start();
		}
		this.scheduler.start();
	}

	@Override
	public void destroy() throws Exception {
		try {
			if (this.executor instanceof LifeCycle) {
				((LifeCycle)this.executor).stop();
			}
		}
		catch (Throwable ex) {
			// ignore
		}
		try {
			if (this.scheduler != null) {
				this.scheduler.stop();
			}
		}
		catch (Throwable ex) {
			// ignore
		}
	}

}

相关信息

spring 源码目录

相关文章

spring AbstractClientHttpRequest 源码

spring ClientHttpConnector 源码

spring ClientHttpRequest 源码

spring ClientHttpRequestDecorator 源码

spring ClientHttpResponse 源码

spring ClientHttpResponseDecorator 源码

spring HttpComponentsClientHttpConnector 源码

spring HttpComponentsClientHttpRequest 源码

spring HttpComponentsClientHttpResponse 源码

spring HttpComponentsHeadersAdapter 源码