Example usage for org.apache.http.nio.client.methods HttpAsyncMethods create

Introduction

In this page you can find the example usage for org.apache.http.nio.client.methods HttpAsyncMethods create.

Prototype

public static HttpAsyncRequestProducer create(final HttpHost target, final HttpRequest request) 

Source Link

Document

Creates asynchronous request generator for the given request message.

Usage

From source file:org.elasticsearch.client.RestClient.java

private void performRequestAsync(final long startTime, final HostTuple<Iterator<HttpHost>> hostTuple,
        final HttpRequestBase request, final Set<Integer> ignoreErrorCodes,
        final HttpAsyncResponseConsumerFactory httpAsyncResponseConsumerFactory,
        final FailureTrackingResponseListener listener) {
    final HttpHost host = hostTuple.hosts.next();
    //we stream the request body if the entity allows for it
    final HttpAsyncRequestProducer requestProducer = HttpAsyncMethods.create(host, request);
    final HttpAsyncResponseConsumer<HttpResponse> asyncResponseConsumer = httpAsyncResponseConsumerFactory
            .createHttpAsyncResponseConsumer();
    final HttpClientContext context = HttpClientContext.create();
    context.setAuthCache(hostTuple.authCache);
    client.execute(requestProducer, asyncResponseConsumer, context, new FutureCallback<HttpResponse>() {
        @Override/*  w ww.j  a va 2 s  . c o m*/
        public void completed(HttpResponse httpResponse) {
            try {
                RequestLogger.logResponse(logger, request, host, httpResponse);
                int statusCode = httpResponse.getStatusLine().getStatusCode();
                Response response = new Response(request.getRequestLine(), host, httpResponse);
                if (isSuccessfulResponse(statusCode)
                        || ignoreErrorCodes.contains(response.getStatusLine().getStatusCode())) {
                    onResponse(host);
                    listener.onSuccess(response);
                } else {
                    ResponseException responseException = new ResponseException(response);
                    if (isRetryStatus(statusCode)) {
                        //mark host dead and retry against next one
                        onFailure(host);
                        retryIfPossible(responseException);
                    } else {
                        //mark host alive and don't retry, as the error should be a request problem
                        onResponse(host);
                        listener.onDefinitiveFailure(responseException);
                    }
                }
            } catch (Exception e) {
                listener.onDefinitiveFailure(e);
            }
        }

        @Override
        public void failed(Exception failure) {
            try {
                RequestLogger.logFailedRequest(logger, request, host, failure);
                onFailure(host);
                retryIfPossible(failure);
            } catch (Exception e) {
                listener.onDefinitiveFailure(e);
            }
        }

        private void retryIfPossible(Exception exception) {
            if (hostTuple.hosts.hasNext()) {
                //in case we are retrying, check whether maxRetryTimeout has been reached
                long timeElapsedMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime);
                long timeout = maxRetryTimeoutMillis - timeElapsedMillis;
                if (timeout <= 0) {
                    IOException retryTimeoutException = new IOException(
                            "request retries exceeded max retry timeout [" + maxRetryTimeoutMillis + "]");
                    listener.onDefinitiveFailure(retryTimeoutException);
                } else {
                    listener.trackFailure(exception);
                    request.reset();
                    performRequestAsync(startTime, hostTuple, request, ignoreErrorCodes,
                            httpAsyncResponseConsumerFactory, listener);
                }
            } else {
                listener.onDefinitiveFailure(exception);
            }
        }

        @Override
        public void cancelled() {
            listener.onDefinitiveFailure(new ExecutionException("request was cancelled", null));
        }
    });
}

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From source file:org.apache.http.impl.nio.client.AbstractHttpAsyncClient.java

@Override
public Future<HttpResponse> execute(final HttpHost target, final HttpRequest request, final HttpContext context,
        final FutureCallback<HttpResponse> callback) {
    return execute(HttpAsyncMethods.create(target, request), HttpAsyncMethods.createConsumer(), context,
            callback);// ww w . ja  v  a2  s  .c o m
}

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