我正在使用async-http-client,但我遇到了麻烦NettyAsyncHttpProvider。
它给出了这个警告:
Oct 28, 2014 12:50:16 PM org.jboss.netty.channel.socket.nio.AbstractNioWorkerPool
WARNING: Failed to get all worker threads ready within 10 second(s). Make sure to specify the executor which has more threads than the requested workerCount. If unsure, use Executors.newCachedThreadPool().
我的问题是即使我使用Executors.newCachedThreadPool()以下问题仍然存在。
一旦线程数达到corePoolSize,请求就会被丢弃。无论requestTimeoutInMs我尝试什么或其他选项,只有一小部分响应返回并且池中的线程停止。
ExecutorService executor = new CustomThreadPoolExecutor(2, 2, 60,
TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>(), new ThreadFactory() {
@Override
public Thread newThread(Runnable r) {
int number = threadCreationCount.incrementAndGet();
LOG.info("newThread - {} ", number);
Thread th = new Thread(r);
th.setName("AsyncHttpClient-" + number);
LOG.info("thread ={}", th);
return th;
}
});
AsyncHttpClientConfig.Builder builder = new AsyncHttpClientConfig.Builder();
builder.setMaximumConnectionsTotal(-1)
.setMaximumConnectionsPerHost(-1)
.setConnectionTimeoutInMs(1000)
.setIdleConnectionInPoolTimeoutInMs(60000)
.setIdleConnectionTimeoutInMs(60000)
.setRequestTimeoutInMs(3000)
.setFollowRedirects(true)
.setMaximumNumberOfRedirects(5)
.setAllowPoolingConnection(true)
.setIOThreadMultiplier(4)
.build();
builder.setExecutorService(executor);
AsyncHttpClientConfig config = builder.build();
AsyncHttpClient client = new AsyncHttpClient(new NettyAsyncHttpProvider(config), config);
//Spin up 500 async requests to google.com
for (int i = 1; i <= 500; i++) {
LOG.info("i = {}", i);
ListenableFuture<Response> future = client.prepareGet("http://www.google.com").execute(
new AsyncCompletionHandler<Response>() {
@Override public Response onCompleted(Response response) throws Exception {
LOG.info("Response = {}, count = {}", response.getStatusCode(),
responseCount.incrementAndGet());
return response;
}
@Override
public void onThrowable(Throwable t) {
LOG.error("on throwable ={}", t);
}
});
}
现在,如果我从更改为NettyAsyncHttpProvider执行ApacheAsyncHttpProvider所有请求。
我在 github 上创建了一个示例项目来展示这个问题。异步 http 客户端调试