okhttp系列-execute过程

1.RealCall.execute

java 复制代码
final class RealCall implements Call {
    @Override 
    public Response execute() throws IOException {
        synchronized (this) {
      i    if (executed) throw new IllegalStateException("Already Executed");
          executed = true;
        }
        transmitter.timeoutEnter();
        transmitter.callStart();
        try {
            client.dispatcher().executed(this); //1.调用Dispatcher的executed
            return getResponseWithInterceptorChain();//2调用getResponseWithInterceptorChain
        } finally {
            client.dispatcher().finished(this); //3.结束
        }
    }
}
1.1.Dispatcher.executed

将call加入runningSyncCalls

java 复制代码
public final class Dispatcher {
    private final Deque<RealCall> runningSyncCalls = new ArrayDeque<>();

    synchronized void executed(RealCall call) {
        runningSyncCalls.add(call);
    }
}
1.2.RealCall.getResponseWithInterceptorChain

执行请求后返回结果

java 复制代码
final class RealCall implements Call {
    Response getResponseWithInterceptorChain() throws IOException {
        Interceptor.Chain chain = new RealInterceptorChain(interceptors, transmitter, 
        null, 0, originalRequest, this, client.connectTimeoutMillis(),
        client.readTimeoutMillis(), client.writeTimeoutMillis());

        Response response = chain.proceed(originalRequest); //执行拦截器
        return response; //返回结果
    }
}
1.3.Dispatcher.finished

从runningSyncCalls移除call;

执行下一个call;

java 复制代码
public final class Dispatcher {
    void finished(RealCall call) {
        finished(runningSyncCalls, call);
    }

    private <T> void finished(Deque<T> calls, T call) {
        Runnable idleCallback;
        synchronized (this) {
            //将call从calls移除
            if (!calls.remove(call)) throw new AssertionError("Call wasn't in-flight!");
            idleCallback = this.idleCallback;
        }

        boolean isRunning = promoteAndExecute(); //执行下一个call

        if (!isRunning && idleCallback != null) {//如果没有要执行的call,调用idleCallback
            idleCallback.run(); 
        }
    }
}
1.4.总结
  • 将RealCall添加到runningSyncCalls
  • 调用getResponseWithInterceptorChain执行
  • finally里执行

从将RealCall从runningSyncCalls移除

调用promoteAndExecute,执行其他的AsyncCall

相关推荐
小妖怪的夏天1 天前
react native 出现 FATAL EXCEPTION: OkHttp Dispatcher
react native·react.js·okhttp
阿华的代码王国8 天前
【Android】OkHttp发起GET请求 && POST请求
android·java·okhttp·网络连接
ahoges9 天前
easy-http类似feign的轻量级http客户端工具
java·okhttp
java_t_t13 天前
HTTP 接口调用工具类(OkHttp 版)
网络协议·http·okhttp
雨白18 天前
OkHttpClient 核心配置详解
android·okhttp
小白学大数据24 天前
1688商品数据抓取:Python爬虫+动态页面解析
爬虫·python·okhttp
minos.cpp25 天前
第一章 OkHttp 是怎么发出一个请求的?——整体流程概览
android·okhttp·面试
Sy_planA1 个月前
介绍一下jQuery的AJAX异步请求
ajax·okhttp·jquery
2401_837088501 个月前
AJAX简介
okhttp