Example usage for org.apache.http.concurrent FutureCallback FutureCallback

Introduction

In this page you can find the example usage for org.apache.http.concurrent FutureCallback FutureCallback.

Prototype

FutureCallback

Source Link

Usage

From source file:com.example.AsyncClientHttpExchangeFutureCallback.java

public static void main(String[] args) throws Exception {
    HttpAsyncClient httpclient = new DefaultHttpAsyncClient();
    httpclient.getParams().setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 3000)
            .setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 3000)
            .setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
            .setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true);

    httpclient.start();/*  w  ww .  j  a va2  s.  co  m*/
    try {
        HttpGet[] requests = new HttpGet[] { new HttpGet("http://www.apache.org/"),
                new HttpGet("https://www.verisign.com/"), new HttpGet("http://www.google.com/") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + ex);
                }

                public void cancelled() {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.shutdown();
    }
    System.out.println("Done");
}

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From source file:interoperabilite.webservice.fluent.FluentAsync.java

public static void main(String[] args) throws Exception {
    // Use pool of two threads
    ExecutorService threadpool = Executors.newFixedThreadPool(2);
    Async async = Async.newInstance().use(threadpool);

    Request[] requests = new Request[] { Request.Get("http://www.google.com/"),
            Request.Get("http://www.yahoo.com/"), Request.Get("http://www.apache.com/"),
            Request.Get("http://www.apple.com/") };

    Queue<Future<Content>> queue = new LinkedList<Future<Content>>();
    // Execute requests asynchronously
    for (final Request request : requests) {
        Future<Content> future = async.execute(request, new FutureCallback<Content>() {

            @Override/*w  w  w . jav  a2  s .  c o m*/
            public void failed(final Exception ex) {
                System.out.println(ex.getMessage() + ": " + request);
            }

            @Override
            public void completed(final Content content) {
                System.out.println("Request completed: " + request);
            }

            @Override
            public void cancelled() {
            }

        });
        queue.add(future);
    }

    while (!queue.isEmpty()) {
        Future<Content> future = queue.remove();
        try {
            future.get();
        } catch (ExecutionException ex) {
        }
    }
    System.out.println("Done");
    threadpool.shutdown();
}

---

From source file:com.boonya.http.async.examples.nio.client.AsyncClientHttpExchangeFutureCallback.java

public static void main(final String[] args) throws Exception {
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(3000).setConnectTimeout(3000).build();
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
            .build();/*w ww . j a  v  a  2 s .  c om*/
    try {
        httpclient.start();
        final HttpGet[] requests = new HttpGet[] { new HttpGet("http://www.apache.org/"),
                new HttpGet("https://www.verisign.com/"), new HttpGet("http://www.google.com/") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + ex);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
    System.out.println("Done");
}

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From source file:org.jaqpot.core.service.client.jpdi.JPDIClientFactory.java

public static void main(String[] args) throws IOException, InterruptedException, ExecutionException {
    CloseableHttpAsyncClient asyncClient = HttpAsyncClientBuilder.create().build();
    asyncClient.start();//from  ww w  . j av a  2s.c o  m
    HttpGet request = new HttpGet("http://www.google.com");
    request.addHeader("Accept", "text/html");
    Future f = asyncClient.execute(request, new FutureCallback<HttpResponse>() {
        @Override
        public void completed(HttpResponse t) {
            System.out.println("completed");

            try {
                String result = new BufferedReader(new InputStreamReader(t.getEntity().getContent())).lines()
                        .collect(Collectors.joining("\n"));
                System.out.println(result);
            } catch (IOException ex) {
                Logger.getLogger(JPDIClientFactory.class.getName()).log(Level.SEVERE, null, ex);
            } catch (UnsupportedOperationException ex) {
                Logger.getLogger(JPDIClientFactory.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

        @Override
        public void failed(Exception excptn) {
            System.out.println("failed");
        }

        @Override
        public void cancelled() {
            System.out.println("cancelled");
        }
    });
    f.get();
    asyncClient.close();
}

---

From source file:rg.apache.http.examples.async.AsyncClientHttpExchangeFutureCallback.java

public static void main(final String[] args) throws Exception {
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(3000).setConnectTimeout(3000).build();
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
            .setThreadFactory(new NamedThreadFactory("dddddddd")).build();
    try {//from   w  ww  .  j  av a 2  s .  c  o  m
        httpclient.start();
        final HttpGet[] requests = new HttpGet[] { new HttpGet("http://httpbin.org/ip"),
                new HttpGet("https://httpbin.org/ip"), new HttpGet("http://httpbin.org/headers") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + ex);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
    System.out.println("Done");
}

---

From source file:httpasync.QuickStart.java

public static void main(String[] args) throws Exception {
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault();
    try {//from ww w . j  a v a  2 s . c om
        // Start the client
        httpclient.start();

        // Execute request
        final HttpGet request1 = new HttpGet("http://www.apache.org/");
        Future<HttpResponse> future = httpclient.execute(request1, null);
        // and wait until response is received
        HttpResponse response1 = future.get();
        System.out.println(request1.getRequestLine() + "->" + response1.getStatusLine());

        // One most likely would want to use a callback for operation result
        final CountDownLatch latch1 = new CountDownLatch(1);
        final HttpGet request2 = new HttpGet("http://www.apache.org/");
        httpclient.execute(request2, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response2) {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + "->" + response2.getStatusLine());
            }

            @Override
            public void failed(final Exception ex) {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + "->" + ex);
            }

            @Override
            public void cancelled() {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + " cancelled");
            }

        });
        latch1.await();

        // In real world one most likely would want also want to stream
        // request and response body content
        final CountDownLatch latch2 = new CountDownLatch(1);
        final HttpGet request3 = new HttpGet("http://www.apache.org/");
        HttpAsyncRequestProducer producer3 = HttpAsyncMethods.create(request3);
        AsyncCharConsumer<HttpResponse> consumer3 = new AsyncCharConsumer<HttpResponse>() {

            HttpResponse response;

            @Override
            protected void onResponseReceived(final HttpResponse response) {
                this.response = response;
            }

            @Override
            protected void onCharReceived(final CharBuffer buf, final IOControl ioctrl) throws IOException {
                // Do something useful
            }

            @Override
            protected void releaseResources() {
            }

            @Override
            protected HttpResponse buildResult(final HttpContext context) {
                return this.response;
            }

        };
        httpclient.execute(producer3, consumer3, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response3) {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + "->" + response3.getStatusLine());
            }

            @Override
            public void failed(final Exception ex) {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + "->" + ex);
            }

            @Override
            public void cancelled() {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + " cancelled");
            }

        });
        latch2.await();

    } finally {
        httpclient.close();
    }
}

---

From source file:com.boonya.http.async.examples.nio.client.AsyncClientEvictExpiredConnections.java

public static void main(String[] args) throws Exception {
    ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor();
    PoolingNHttpClientConnectionManager cm = new PoolingNHttpClientConnectionManager(ioReactor);
    cm.setMaxTotal(100);// w  w w .jav a2 s. c o m
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setConnectionManager(cm).build();
    try {
        httpclient.start();

        // create an array of URIs to perform GETs on
        String[] urisToGet = { "http://hc.apache.org/", "http://hc.apache.org/httpcomponents-core-ga/",
                "http://hc.apache.org/httpcomponents-client-ga/", };

        IdleConnectionEvictor connEvictor = new IdleConnectionEvictor(cm);
        connEvictor.start();

        final CountDownLatch latch = new CountDownLatch(urisToGet.length);
        for (final String uri : urisToGet) {
            final HttpGet httpget = new HttpGet(uri);
            httpclient.execute(httpget, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + "->" + ex);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();

        // Sleep 10 sec and let the connection evictor do its job
        Thread.sleep(20000);

        // Shut down the evictor thread
        connEvictor.shutdown();
        connEvictor.join();

    } finally {
        httpclient.close();
    }
}

---

From source file:io.aos.protocol.http.httpcommon.FluentAsync.java

public static void main(String... args) throws Exception {
    // Use pool of two threads
    ExecutorService threadpool = Executors.newFixedThreadPool(2);
    Async async = Async.newInstance().use(threadpool);

    Request[] requests = new Request[] { Request.Get("http://www.google.com/"),
            Request.Get("http://www.yahoo.com/"), Request.Get("http://www.apache.com/"),
            Request.Get("http://www.apple.com/") };

    Queue<Future<Content>> queue = new LinkedList<Future<Content>>();
    // Execute requests asynchronously
    for (final Request request : requests) {
        Future<Content> future = async.execute(request, new FutureCallback<Content>() {

            public void failed(final Exception ex) {
                System.out.println(ex.getMessage() + ": " + request);
            }/*from  w  w  w  .jav a2 s. c  om*/

            public void completed(final Content content) {
                System.out.println("Request completed: " + request);
            }

            public void cancelled() {
            }

        });
        queue.add(future);
    }

    while (!queue.isEmpty()) {
        Future<Content> future = queue.remove();
        try {
            future.get();
        } catch (ExecutionException ex) {
        }
    }
    System.out.println("Done");
    threadpool.shutdown();
}

---

From source file:com.mycompany.asyncreq.MainApp.java

public static void main(String[] args) throws InterruptedException, ExecutionException, IOException {
    URIBuilder builder = new URIBuilder();
    builder.setScheme("http").setHost("comtrade.un.org").setPath("/api/get").setParameter("max", "50000")
            .setParameter("type", "C").setParameter("freq", "M").setParameter("px", "HS")
            .setParameter("ps", "2014").setParameter("r", "804").setParameter("p", "112")
            .setParameter("rg", "All").setParameter("cc", "All").setParameter("fmt", "json");
    URI requestURL = null;/*from www.  j a  v a2  s .c  om*/
    try {
        requestURL = builder.build();
    } catch (URISyntaxException use) {
    }

    ExecutorService threadpool = Executors.newFixedThreadPool(2);
    Async async = Async.newInstance().use(threadpool);
    final Request request = Request.Get(requestURL);

    try {
        Future<Content> future = async.execute(request, new FutureCallback<Content>() {
            @Override
            public void failed(final Exception e) {
                System.out.println(e.getMessage() + ": " + request);
            }

            @Override
            public void completed(final Content content) {
                System.out.println("Request completed: " + request);
                System.out.println("Response:\n" + content.asString());
            }

            @Override
            public void cancelled() {
            }
        });
    } catch (Exception e) {
        System.out.println("Job threw exception: " + e.getCause());
    }

}

---

From source file:com.lxf.spider.client.ClientWithRequestFuture.java

public static void main(String[] args) throws Exception {
    // the simplest way to create a HttpAsyncClientWithFuture
    HttpClient httpclient = HttpClientBuilder.create().setMaxConnPerRoute(5).setMaxConnTotal(5).build();
    ExecutorService execService = Executors.newFixedThreadPool(5);
    FutureRequestExecutionService requestExecService = new FutureRequestExecutionService(httpclient,
            execService);/* ww  w  .  j av  a  2s  . c om*/
    try {
        // Because things are asynchronous, you must provide a ResponseHandler
        ResponseHandler<Boolean> handler = new ResponseHandler<Boolean>() {
            public Boolean handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
                // simply return true if the status was OK
                return response.getStatusLine().getStatusCode() == 200;
            }
        };

        // Simple request ...
        HttpGet request1 = new HttpGet("http://google.com");
        HttpRequestFutureTask<Boolean> futureTask1 = requestExecService.execute(request1,
                HttpClientContext.create(), handler);
        Boolean wasItOk1 = futureTask1.get();
        System.out.println("It was ok? " + wasItOk1);

        // Cancel a request
        try {
            HttpGet request2 = new HttpGet("http://google.com");
            HttpRequestFutureTask<Boolean> futureTask2 = requestExecService.execute(request2,
                    HttpClientContext.create(), handler);
            futureTask2.cancel(true);
            Boolean wasItOk2 = futureTask2.get();
            System.out.println("It was cancelled so it should never print this: " + wasItOk2);
        } catch (CancellationException e) {
            System.out.println("We cancelled it, so this is expected");
        }

        // Request with a timeout
        HttpGet request3 = new HttpGet("http://google.com");
        HttpRequestFutureTask<Boolean> futureTask3 = requestExecService.execute(request3,
                HttpClientContext.create(), handler);
        Boolean wasItOk3 = futureTask3.get(10, TimeUnit.SECONDS);
        System.out.println("It was ok? " + wasItOk3);

        FutureCallback<Boolean> callback = new FutureCallback<Boolean>() {
            public void completed(Boolean result) {
                System.out.println("completed with " + result);
            }

            public void failed(Exception ex) {
                System.out.println("failed with " + ex.getMessage());
            }

            public void cancelled() {
                System.out.println("cancelled");
            }
        };

        // Simple request with a callback
        HttpGet request4 = new HttpGet("http://google.com");
        // using a null HttpContext here since it is optional
        // the callback will be called when the task completes, fails, or is cancelled
        HttpRequestFutureTask<Boolean> futureTask4 = requestExecService.execute(request4,
                HttpClientContext.create(), handler, callback);
        Boolean wasItOk4 = futureTask4.get(10, TimeUnit.SECONDS);
        System.out.println("It was ok? " + wasItOk4);
    } finally {
        requestExecService.close();
    }
}

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