Esempio n. 1
0
  /**
   * Test concurrent reader and writer (GH-458).
   *
   * <p><b>Test case:</b>
   *
   * <ol>
   *   <li/>start a long running reader;
   *   <li/>try to start a writer: it should time out;
   *   <li/>stop the reader;
   *   <li/>start the writer again: it should succeed.
   * </ol>
   *
   * @throws Exception error during request execution
   */
  @Test
  @Ignore("There is no way to stop a query on the server!")
  public void testReaderWriter() throws Exception {
    final String readerQuery = "?query=(1%20to%20100000000000000)%5b.=1%5d";
    final String writerQuery = "/test.xml";
    final byte[] content = Token.token("<a/>");

    final Get readerAction = new Get(readerQuery);
    final Put writerAction = new Put(writerQuery, content);

    final ExecutorService exec = Executors.newFixedThreadPool(2);

    // start reader
    exec.submit(readerAction);
    Performance.sleep(TIMEOUT); // delay in order to be sure that the reader has started
    // start writer
    Future<HTTPResponse> writer = exec.submit(writerAction);

    try {
      final HTTPResponse result = writer.get(TIMEOUT, TimeUnit.MILLISECONDS);

      if (result.status.isSuccess()) fail("Database modified while a reader is running");
      throw new Exception(result.toString());
    } catch (final TimeoutException e) {
      // writer is blocked by the reader: stop it
      writerAction.stop = true;
    }

    // stop reader
    readerAction.stop = true;

    // start the writer again
    writer = exec.submit(writerAction);
    assertEquals(HTTPCode.CREATED, writer.get().status);
  }
Esempio n. 2
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  /**
   * Test 2 concurrent readers (GH-458).
   *
   * <p><b>Test case:</b>
   *
   * <ol>
   *   <li/>start a long running reader;
   *   <li/>start a fast reader: it should succeed.
   * </ol>
   *
   * @throws Exception error during request execution
   */
  @Test
  public void testMultipleReaders() throws Exception {
    final String number = "63177";
    final String slowQuery = "?query=(1%20to%20100000000000000)%5b.=1%5d";
    final String fastQuery = "?query=" + number;

    final Get slowAction = new Get(slowQuery);
    final Get fastAction = new Get(fastQuery);

    final ExecutorService exec = Executors.newFixedThreadPool(2);

    exec.submit(slowAction);
    Performance.sleep(TIMEOUT); // delay in order to be sure that the reader has started
    final Future<HTTPResponse> fast = exec.submit(fastAction);

    try {
      final HTTPResponse result = fast.get(TIMEOUT, TimeUnit.MILLISECONDS);
      assertEquals(HTTPCode.OK, result.status);
      assertEquals(number, result.data);
    } finally {
      slowAction.stop = true;
    }
  }
Esempio n. 3
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 private Future sendDataUdp(final InetSocketAddress clientLocation, final String employee) {
   return executor.submit(
       new Runnable() {
         public void run() {
           try {
             Thread.sleep(SECONDS.toMillis(1));
             DatagramSocket clientSocket = new DatagramSocket();
             byte[] sendDataServer = serialize((String) employee);
             DatagramPacket pongPacket =
                 new DatagramPacket(sendDataServer, sendDataServer.length, clientLocation);
             clientSocket.send(pongPacket);
             clientSocket.close();
           } catch (IOException e) {
             e.printStackTrace();
           } catch (InterruptedException e) {
             e.printStackTrace();
           }
         }
       });
 }
Esempio n. 4
0
  /**
   * Test concurrent writers (GH-458).
   *
   * <p><b>Test case:</b>
   *
   * <ol>
   *   <li/>start several writers one after another;
   *   <li/>all writers should succeed.
   * </ol>
   *
   * @throws Exception error during request execution
   */
  @Test
  public void testMultipleWriters() throws Exception {
    final int count = 10;
    final String template =
        "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
            + "<command xmlns=\"http://basex.org/rest\"><text><![CDATA["
            + "ADD TO %1$d <node id=\"%1$d\"/>"
            + "]]></text></command>";

    @SuppressWarnings("unchecked")
    final Future<HTTPResponse>[] tasks = new Future[count];
    final ExecutorService exec = Executors.newFixedThreadPool(count);

    // start all writers (not at the same time, but still in parallel)
    for (int i = 0; i < count; i++) {
      final String command = String.format(template, i);
      tasks[i] = exec.submit(new Post("", Token.token(command)));
    }

    // check if all have finished successfully
    for (final Future<HTTPResponse> task : tasks) {
      assertEquals(HTTPCode.OK, task.get(TIMEOUT, TimeUnit.MILLISECONDS).status);
    }
  }
 /**
  * Discover WS device on the local network
  *
  * @return list of unique devices access strings which might be URLs in most cases
  */
 public static Collection<String> discoverWsDevices() {
   final Collection<String> addresses = new ConcurrentSkipListSet<>();
   final CountDownLatch serverStarted = new CountDownLatch(1);
   final CountDownLatch serverFinished = new CountDownLatch(1);
   final Collection<InetAddress> addressList = new ArrayList<>();
   try {
     final Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
     if (interfaces != null) {
       while (interfaces.hasMoreElements()) {
         NetworkInterface anInterface = interfaces.nextElement();
         if (!anInterface.isLoopback()) {
           final List<InterfaceAddress> interfaceAddresses = anInterface.getInterfaceAddresses();
           for (InterfaceAddress address : interfaceAddresses) {
             addressList.add(address.getAddress());
           }
         }
       }
     }
   } catch (SocketException e) {
     e.printStackTrace();
   }
   ExecutorService executorService = Executors.newCachedThreadPool();
   for (final InetAddress address : addressList) {
     Runnable runnable =
         new Runnable() {
           public void run() {
             try {
               final String uuid = UUID.randomUUID().toString();
               final String probe =
                   WS_DISCOVERY_PROBE_MESSAGE.replaceAll(
                       "<wsa:MessageID>urn:uuid:.*</wsa:MessageID>",
                       "<wsa:MessageID>urn:uuid:" + uuid + "</wsa:MessageID>");
               final int port = random.nextInt(20000) + 40000;
               @SuppressWarnings("SocketOpenedButNotSafelyClosed")
               final DatagramSocket server = new DatagramSocket(port, address);
               new Thread() {
                 public void run() {
                   try {
                     final DatagramPacket packet = new DatagramPacket(new byte[4096], 4096);
                     server.setSoTimeout(WS_DISCOVERY_TIMEOUT);
                     long timerStarted = System.currentTimeMillis();
                     while (System.currentTimeMillis() - timerStarted < (WS_DISCOVERY_TIMEOUT)) {
                       serverStarted.countDown();
                       server.receive(packet);
                       final Collection<String> collection =
                           parseSoapResponseForUrls(
                               Arrays.copyOf(packet.getData(), packet.getLength()));
                       for (String key : collection) {
                         addresses.add(key);
                       }
                     }
                   } catch (SocketTimeoutException ignored) {
                   } catch (Exception e) {
                     e.printStackTrace();
                   } finally {
                     serverFinished.countDown();
                     server.close();
                   }
                 }
               }.start();
               try {
                 serverStarted.await(1000, TimeUnit.MILLISECONDS);
               } catch (InterruptedException e) {
                 e.printStackTrace();
               }
               if (address instanceof Inet4Address) {
                 server.send(
                     new DatagramPacket(
                         probe.getBytes(),
                         probe.length(),
                         InetAddress.getByName(WS_DISCOVERY_ADDRESS_IPv4),
                         WS_DISCOVERY_PORT));
               } else {
                 server.send(
                     new DatagramPacket(
                         probe.getBytes(),
                         probe.length(),
                         InetAddress.getByName(WS_DISCOVERY_ADDRESS_IPv6),
                         WS_DISCOVERY_PORT));
               }
             } catch (Exception e) {
               e.printStackTrace();
             }
             try {
               serverFinished.await((WS_DISCOVERY_TIMEOUT), TimeUnit.MILLISECONDS);
             } catch (InterruptedException e) {
               e.printStackTrace();
             }
           }
         };
     executorService.submit(runnable);
   }
   try {
     executorService.shutdown();
     executorService.awaitTermination(WS_DISCOVERY_TIMEOUT + 2000, TimeUnit.MILLISECONDS);
   } catch (InterruptedException ignored) {
   }
   return addresses;
 }