Java 类org.apache.http.nio.protocol.HttpAsyncResponseConsumer 实例源码

@SuppressWarnings({ "unchecked", "rawtypes" })
public void testTooLargeResponse() throws Exception {
    ContentTooLongException tooLong = new ContentTooLongException("too long!");
    CloseableHttpAsyncClient httpClient = mock(CloseableHttpAsyncClient.class);
    when(httpClient.<HttpResponse>execute(any(HttpAsyncRequestProducer.class), any(HttpAsyncResponseConsumer.class),
            any(HttpClientContext.class), any(FutureCallback.class))).then(new Answer<Future<HttpResponse>>() {
        @Override
        public Future<HttpResponse> answer(InvocationOnMock invocationOnMock) throws Throwable {
            HeapBufferedAsyncResponseConsumer consumer = (HeapBufferedAsyncResponseConsumer) invocationOnMock.getArguments()[1];
            FutureCallback callback = (FutureCallback) invocationOnMock.getArguments()[3];
            assertEquals(new ByteSizeValue(100, ByteSizeUnit.MB).bytesAsInt(), consumer.getBufferLimit());
            callback.failed(tooLong);
            return null;
        }
    });
    RemoteScrollableHitSource source = sourceWithMockedClient(true, httpClient);

    AtomicBoolean called = new AtomicBoolean();
    Consumer<Response> checkResponse = r -> called.set(true);
    Throwable e = expectThrows(RuntimeException.class,
            () -> source.doStartNextScroll(FAKE_SCROLL_ID, timeValueMillis(0), checkResponse));
    // Unwrap the some artifacts from the test
    while (e.getMessage().equals("failed")) {
        e = e.getCause();
    }
    // This next exception is what the user sees
    assertEquals("Remote responded with a chunk that was too large. Use a smaller batch size.", e.getMessage());
    // And that exception is reported as being caused by the underlying exception returned by the client
    assertSame(tooLong, e.getCause());
    assertFalse(called.get());
}

/**
 * Verifies the content of the {@link HttpRequest} that's internally created and passed through to the http client
 */
@SuppressWarnings("unchecked")
public void testInternalHttpRequest() throws Exception {
    ArgumentCaptor<HttpAsyncRequestProducer> requestArgumentCaptor = ArgumentCaptor.forClass(HttpAsyncRequestProducer.class);
    int times = 0;
    for (String httpMethod : getHttpMethods()) {
        HttpUriRequest expectedRequest = performRandomRequest(httpMethod);
        verify(httpClient, times(++times)).<HttpResponse>execute(requestArgumentCaptor.capture(),
                any(HttpAsyncResponseConsumer.class), any(HttpClientContext.class), any(FutureCallback.class));
        HttpUriRequest actualRequest = (HttpUriRequest)requestArgumentCaptor.getValue().generateRequest();
        assertEquals(expectedRequest.getURI(), actualRequest.getURI());
        assertEquals(expectedRequest.getClass(), actualRequest.getClass());
        assertArrayEquals(expectedRequest.getAllHeaders(), actualRequest.getAllHeaders());
        if (expectedRequest instanceof HttpEntityEnclosingRequest) {
            HttpEntity expectedEntity = ((HttpEntityEnclosingRequest) expectedRequest).getEntity();
            if (expectedEntity != null) {
                HttpEntity actualEntity = ((HttpEntityEnclosingRequest) actualRequest).getEntity();
                assertEquals(EntityUtils.toString(expectedEntity), EntityUtils.toString(actualEntity));
            }
        }
    }
}

@Before
@SuppressWarnings("unchecked")
public void createRestClient() throws IOException {
    CloseableHttpAsyncClient httpClient = mock(CloseableHttpAsyncClient.class);
    when(httpClient.<HttpResponse>execute(any(HttpAsyncRequestProducer.class), any(HttpAsyncResponseConsumer.class),
           any(HttpClientContext.class), any(FutureCallback.class))).thenAnswer(new Answer<Future<HttpResponse>>() {
        @Override
        public Future<HttpResponse> answer(InvocationOnMock invocationOnMock) throws Throwable {
            HttpAsyncRequestProducer requestProducer = (HttpAsyncRequestProducer) invocationOnMock.getArguments()[0];
            HttpUriRequest request = (HttpUriRequest)requestProducer.generateRequest();
            HttpHost httpHost = requestProducer.getTarget();
            HttpClientContext context = (HttpClientContext) invocationOnMock.getArguments()[2];
            assertThat(context.getAuthCache().get(httpHost), instanceOf(BasicScheme.class));
            FutureCallback<HttpResponse> futureCallback = (FutureCallback<HttpResponse>) invocationOnMock.getArguments()[3];
            //return the desired status code or exception depending on the path
            if (request.getURI().getPath().equals("/soe")) {
                futureCallback.failed(new SocketTimeoutException(httpHost.toString()));
            } else if (request.getURI().getPath().equals("/coe")) {
                futureCallback.failed(new ConnectTimeoutException(httpHost.toString()));
            } else if (request.getURI().getPath().equals("/ioe")) {
                futureCallback.failed(new IOException(httpHost.toString()));
            } else {
                int statusCode = Integer.parseInt(request.getURI().getPath().substring(1));
                StatusLine statusLine = new BasicStatusLine(new ProtocolVersion("http", 1, 1), statusCode, "");
                futureCallback.completed(new BasicHttpResponse(statusLine));
            }
            return null;
        }
    });
    int numHosts = RandomNumbers.randomIntBetween(getRandom(), 2, 5);
    httpHosts = new HttpHost[numHosts];
    for (int i = 0; i < numHosts; i++) {
        httpHosts[i] = new HttpHost("localhost", 9200 + i);
    }
    failureListener = new HostsTrackingFailureListener();
    restClient = new RestClient(httpClient, 10000, new Header[0], httpHosts, null, failureListener);
}

@SuppressWarnings("rawtypes")
public List<HttpAsyncResponseConsumer> makeConsumers(List<HttpAsyncResponseConsumer> list) {

    List<HttpAsyncResponseConsumer> ls = new ArrayList<HttpAsyncResponseConsumer>();

    for (HttpAsyncResponseConsumer r : list) {
        ls.add(makeConsumer(r));
    }

    return ls;
}

private Future<Response> executeRequest(Request request, HttpRequestBase method, HttpContext context, HTTPCallback<HttpResponse> callback) {
    if (request.isDownload()) {
        HttpAsyncRequestProducer producer = HttpAsyncMethods.create(method);
        HttpAsyncResponseConsumer<HttpResponse> consumer = new BasicAsyncResponseConsumer();
        return executeRequest(producer, consumer, context, callback);
    } else
        return executeRequest(method, context, callback);
}

private <T> Future<T> executeAsync(HttpUriRequest request, HttpAsyncResponseConsumer<T> consumer) {
    if(this.auth != null) {
        this.auth.authenticateRequest(request);
    }
    request.addHeader("User-Agent", HttpClient.userAgent);
    HttpHost target = new HttpHost(request.getURI().getHost(), request.getURI().getPort());
    return client.execute(new BasicAsyncRequestProducer(target, request), consumer, null);
}

@Override
public HttpAsyncResponseConsumer<HttpResponse> createHttpAsyncResponseConsumer() {
    return new HeapBufferedAsyncResponseConsumer(bufferLimit);
}

private Future<Response> executeRequest(HttpAsyncRequestProducer producer, HttpAsyncResponseConsumer<HttpResponse> consumer, HttpContext httpContext, HTTPCallback<HttpResponse> callback) {
    client.execute(producer, consumer, httpContext, new HTTPCCallback(callback));

    return callback.getFuture();
}

public <T> Future<T> get(String path, HttpAsyncResponseConsumer<T> consumer) {
    final HttpGet request = new HttpGet(getUrl(path));
    return this.executeAsync(request, consumer);
}

public <T> Future<T> post(String path, HttpEntity data, HttpAsyncResponseConsumer<T> consumer) {
    return post(getUrl(path), data, consumer, null);
}

public <T> Future<T> post(String path, HttpEntity data, HttpAsyncResponseConsumer<T> consumer, Map<String, String> parameters) {
    final HttpPost request = new HttpPost(getUrl(path));
    request.setEntity(data);
    addQueryParameters(request, parameters);
    return this.executeAsync(request, consumer);
}

public <T> Future<T> put(String path, HttpEntity data, HttpAsyncResponseConsumer<T> consumer) {
    final HttpPut request = new HttpPut(getUrl(path));
    request.setEntity(data);
    return this.executeAsync(request, consumer);
}

public <T> Future<T> delete(String path, HttpAsyncResponseConsumer<T> consumer) {
    final HttpDelete request = new HttpDelete(getUrl(path));
    return executeAsync(request, consumer);
}

public <T> Future<T> head(String path, HttpAsyncResponseConsumer<T> consumer) {
    final HttpHead request = new HttpHead(getUrl(path));
    return executeAsync(request, consumer);
}

@Override
public Future<HttpResponse> execute(final HttpAsyncClient httpClient) throws FileNotFoundException {
    final HttpAsyncResponseConsumer<HttpResponse> consumer = new BasicAsyncResponseConsumer();
    final HttpAsyncRequestProducer producer = this.getProducer();
    return httpClient.execute(producer, consumer, null);
}

/**
 * Creates the {@link HttpAsyncResponseConsumer}, called once per request attempt.
 */
HttpAsyncResponseConsumer<HttpResponse> createHttpAsyncResponseConsumer();

/**
 * Retries given HTTP request. Called internally only, from the HttpFuture
 *
 * @param httpUriRequest the HttpUriRequest to retry
 * @param responseConsumer the response consumer
 * @return the resulting Future<HttpResponse> instance
 */
Future<HttpResponse> retryOperation( HttpUriRequest httpUriRequest, HttpAsyncResponseConsumer<HttpResponse> responseConsumer ) {
    return responseConsumer == null ? asyncClient.execute( httpUriRequest, null ) : asyncClient.execute( HttpAsyncMethods.create( httpUriRequest ), responseConsumer, null, null );
}

/**
 * Instantiates a new Http future.
 *
 * @param asyncHttpService   async http service instance
 * @param httpUriRequest     the http uri request
 * @param responseConsumer   the response consumer
 * @param httpResponseFuture the http response future
 * @param body               the body
 */
public HttpFuture( AsyncHttpService asyncHttpService, HttpUriRequest httpUriRequest, HttpAsyncResponseConsumer<HttpResponse> responseConsumer, Future<HttpResponse> httpResponseFuture, String body ) {
    this( asyncHttpService, httpUriRequest, httpResponseFuture, body );
    this.responseConsumer = responseConsumer;
}