Examples with ConcurrentHashMap java.util.concurrent.ConcurrentHashMap used on opensource projects

Example 56 with ConcurrentHashMap

use of java.util.concurrent.ConcurrentHashMap in project mapdb by jankotek.

the class ConcurrentHashMap8Test method testCompute2.

/**
     * compute adds when the given key is not present
     */
public void testCompute2() {
    ConcurrentHashMap map = map5();
    assertEquals("Z", map.compute(six, (x, y) -> "Z"));
}

Example 57 with ConcurrentHashMap

use of java.util.concurrent.ConcurrentHashMap in project mapdb by jankotek.

the class ConcurrentHashMap8Test method map5.

/**
     * Returns a new map from Integers 1-5 to Strings "A"-"E".
     */
private static ConcurrentHashMap map5() {
    ConcurrentHashMap map = new ConcurrentHashMap(5);
    assertTrue(map.isEmpty());
    map.put(one, "A");
    map.put(two, "B");
    map.put(three, "C");
    map.put(four, "D");
    map.put(five, "E");
    assertFalse(map.isEmpty());
    assertEquals(5, map.size());
    return map;
}

Example 58 with ConcurrentHashMap

use of java.util.concurrent.ConcurrentHashMap in project jersey by jersey.

the class ManagedAsyncResourceTest method testChatResource.

@Test
public void testChatResource() throws InterruptedException {
    final WebTarget resourceTarget = target().path("chat");
    final int MAX_MESSAGES = 100;
    final int LATCH_WAIT_TIMEOUT = 10 * getAsyncTimeoutMultiplier();
    final boolean debugMode = false;
    final boolean sequentialGet = false;
    final boolean sequentialPost = false;
    final Object sequentialGetLock = new Object();
    final Object sequentialPostLock = new Object();
    final ExecutorService executor = Executors.newCachedThreadPool(new ThreadFactoryBuilder().setNameFormat("async-resource-test-%d").setUncaughtExceptionHandler(new JerseyProcessingUncaughtExceptionHandler()).build());
    final Map<Integer, Integer> postResponses = new ConcurrentHashMap<Integer, Integer>();
    final Map<Integer, Message> getResponses = new ConcurrentHashMap<Integer, Message>();
    final CountDownLatch postRequestLatch = new CountDownLatch(MAX_MESSAGES);
    final CountDownLatch getRequestLatch = new CountDownLatch(MAX_MESSAGES);
    try {
        for (int i = 0; i < MAX_MESSAGES; i++) {
            final int requestId = i;
            executor.submit(new Runnable() {

                @Override
                public void run() {
                    if (debugMode || sequentialPost) {
                        synchronized (sequentialPostLock) {
                            post();
                        }
                    } else {
                        post();
                    }
                }

                private void post() {
                    try {
                        int attemptCounter = 0;
                        while (true) {
                            attemptCounter++;
                            try {
                                final Response response = resourceTarget.request().post(Entity.json(new Message("" + requestId, "" + requestId)));
                                postResponses.put(requestId, response.getStatus());
                                break;
                            } catch (Throwable t) {
                                LOGGER.log(Level.WARNING, String.format("Error POSTING message <%s> for %d. time.", requestId, attemptCounter), t);
                            }
                            if (attemptCounter > 3) {
                                break;
                            }
                            Thread.sleep(10);
                        }
                    } catch (InterruptedException ignored) {
                        LOGGER.log(Level.WARNING, String.format("Error POSTING message <%s>: Interrupted", requestId), ignored);
                    } finally {
                        postRequestLatch.countDown();
                    }
                }
            });
            executor.submit(new Runnable() {

                @Override
                public void run() {
                    if (debugMode || sequentialGet) {
                        synchronized (sequentialGetLock) {
                            get();
                        }
                    } else {
                        get();
                    }
                }

                private void get() {
                    try {
                        int attemptCounter = 0;
                        while (true) {
                            attemptCounter++;
                            try {
                                final Message response = resourceTarget.request("application/json").get(Message.class);
                                getResponses.put(requestId, response);
                                break;
                            } catch (Throwable t) {
                                LOGGER.log(Level.SEVERE, String.format("Error sending GET request <%s> for %d. time.", requestId, attemptCounter), t);
                            }
                            if (attemptCounter > 3) {
                                break;
                            }
                            Thread.sleep(10);
                        }
                    } catch (InterruptedException ignored) {
                        LOGGER.log(Level.WARNING, String.format("Error sending GET message <%s>: Interrupted", requestId), ignored);
                    } finally {
                        getRequestLatch.countDown();
                    }
                }
            });
        }
        if (debugMode) {
            postRequestLatch.await();
            getRequestLatch.await();
        } else {
            if (!postRequestLatch.await(LATCH_WAIT_TIMEOUT, TimeUnit.SECONDS)) {
                LOGGER.log(Level.SEVERE, "Waiting for all POST requests to complete has timed out.");
            }
            if (!getRequestLatch.await(LATCH_WAIT_TIMEOUT, TimeUnit.SECONDS)) {
                LOGGER.log(Level.SEVERE, "Waiting for all GET requests to complete has timed out.");
            }
        }
    } finally {
        executor.shutdownNow();
    }
    StringBuilder messageBuilder = new StringBuilder("POST responses received: ").append(postResponses.size()).append("\n");
    for (Map.Entry<Integer, Integer> postResponseEntry : postResponses.entrySet()) {
        messageBuilder.append("POST response for message ").append(postResponseEntry.getKey()).append(": ").append(postResponseEntry.getValue()).append('\n');
    }
    messageBuilder.append('\n');
    messageBuilder.append("GET responses received: ").append(getResponses.size()).append("\n");
    for (Map.Entry<Integer, Message> getResponseEntry : getResponses.entrySet()) {
        messageBuilder.append("GET response for message ").append(getResponseEntry.getKey()).append(": ").append(getResponseEntry.getValue()).append('\n');
    }
    LOGGER.info(messageBuilder.toString());
    for (Map.Entry<Integer, Integer> postResponseEntry : postResponses.entrySet()) {
        assertEquals("Unexpected POST notification response for message " + postResponseEntry.getKey(), 200, postResponseEntry.getValue().intValue());
    }
    final List<Integer> lost = new LinkedList<Integer>();
    final Collection<Message> getResponseValues = getResponses.values();
    for (int i = 0; i < MAX_MESSAGES; i++) {
        if (!getResponseValues.contains(new Message("" + i, "" + i))) {
            lost.add(i);
        }
    }
    if (!lost.isEmpty()) {
        fail("Detected a posted message loss(es): " + lost.toString());
    }
    assertEquals(MAX_MESSAGES, postResponses.size());
    assertEquals(MAX_MESSAGES, getResponses.size());
}

Example 59 with ConcurrentHashMap

use of java.util.concurrent.ConcurrentHashMap in project jersey by jersey.

the class ManagedAsyncResourceTest method testLongRunningResource.

@Test
public void testLongRunningResource() throws InterruptedException {
    final WebTarget resourceTarget = target().path(App.ASYNC_LONG_RUNNING_MANAGED_OP_PATH);
    final String expectedResponse = SimpleJerseyExecutorManagedLongRunningResource.NOTIFICATION_RESPONSE;
    final int MAX_MESSAGES = 100;
    final int LATCH_WAIT_TIMEOUT = 10 * getAsyncTimeoutMultiplier();
    final boolean debugMode = false;
    final boolean sequentialGet = false;
    final Object sequentialGetLock = new Object();
    final ExecutorService executor = Executors.newCachedThreadPool(new ThreadFactoryBuilder().setNameFormat("async-resource-test-%d").setUncaughtExceptionHandler(new JerseyProcessingUncaughtExceptionHandler()).build());
    final Map<Integer, String> getResponses = new ConcurrentHashMap<Integer, String>();
    final CountDownLatch getRequestLatch = new CountDownLatch(MAX_MESSAGES);
    try {
        for (int i = 0; i < MAX_MESSAGES; i++) {
            final int requestId = i;
            executor.submit(new Runnable() {

                @Override
                public void run() {
                    if (debugMode || sequentialGet) {
                        synchronized (sequentialGetLock) {
                            get();
                        }
                    } else {
                        get();
                    }
                }

                private void get() {
                    try {
                        int attemptCounter = 0;
                        while (true) {
                            attemptCounter++;
                            try {
                                final String response = resourceTarget.queryParam("id", requestId).request().get(String.class);
                                getResponses.put(requestId, response);
                                break;
                            } catch (Throwable t) {
                                LOGGER.log(Level.SEVERE, String.format("Error sending GET request <%s> for %d. time.", requestId, attemptCounter), t);
                            }
                            if (attemptCounter > 3) {
                                break;
                            }
                            Thread.sleep(10);
                        }
                    } catch (InterruptedException ignored) {
                        LOGGER.log(Level.WARNING, String.format("Error sending GET message <%s>: Interrupted", requestId), ignored);
                    } finally {
                        getRequestLatch.countDown();
                    }
                }
            });
        }
        if (debugMode) {
            getRequestLatch.await();
        } else {
            if (!getRequestLatch.await(LATCH_WAIT_TIMEOUT, TimeUnit.SECONDS)) {
                LOGGER.log(Level.SEVERE, "Waiting for all GET requests to complete has timed out.");
            }
        }
    } finally {
        executor.shutdownNow();
    }
    StringBuilder messageBuilder = new StringBuilder("GET responses received: ").append(getResponses.size()).append("\n");
    for (Map.Entry<Integer, String> getResponseEntry : getResponses.entrySet()) {
        messageBuilder.append("GET response for message ").append(getResponseEntry.getKey()).append(": ").append(getResponseEntry.getValue()).append('\n');
    }
    LOGGER.info(messageBuilder.toString());
    for (Map.Entry<Integer, String> entry : getResponses.entrySet()) {
        assertTrue("Unexpected GET notification response for message " + entry.getKey(), entry.getValue().contains(expectedResponse));
    }
    assertEquals(MAX_MESSAGES, getResponses.size());
}

Example 60 with ConcurrentHashMap

use of java.util.concurrent.ConcurrentHashMap in project jersey by jersey.

the class AsyncResourceTest method testLongRunningResource.

@Test
public void testLongRunningResource() throws InterruptedException {
    final WebTarget resourceTarget = target().path(App.ASYNC_LONG_RUNNING_OP_PATH);
    final String expectedResponse = SimpleLongRunningResource.NOTIFICATION_RESPONSE;
    final int MAX_MESSAGES = 100;
    final int LATCH_WAIT_TIMEOUT = 25 * getAsyncTimeoutMultiplier();
    final boolean debugMode = false;
    final boolean sequentialGet = false;
    final Object sequentialGetLock = new Object();
    final ExecutorService executor = Executors.newCachedThreadPool(new ThreadFactoryBuilder().setNameFormat("async-resource-test-%02d").setUncaughtExceptionHandler(new JerseyProcessingUncaughtExceptionHandler()).build());
    final Map<Integer, String> getResponses = new ConcurrentHashMap<Integer, String>();
    final CountDownLatch getRequestLatch = new CountDownLatch(MAX_MESSAGES);
    try {
        for (int i = 0; i < MAX_MESSAGES; i++) {
            final int requestId = i;
            executor.submit(new Runnable() {

                @Override
                public void run() {
                    if (debugMode || sequentialGet) {
                        synchronized (sequentialGetLock) {
                            get();
                        }
                    } else {
                        get();
                    }
                }

                private void get() {
                    try {
                        int attemptCounter = 0;
                        while (true) {
                            attemptCounter++;
                            try {
                                final String response = resourceTarget.request().get(String.class);
                                getResponses.put(requestId, response);
                                break;
                            } catch (Throwable t) {
                                LOGGER.log(Level.SEVERE, String.format("Error sending GET request <%s> for %d. time.", requestId, attemptCounter), t);
                            }
                            if (attemptCounter > 3) {
                                break;
                            }
                            Thread.sleep(10);
                        }
                    } catch (InterruptedException ignored) {
                        LOGGER.log(Level.WARNING, String.format("Error sending GET message <%s>: Interrupted", requestId), ignored);
                    } finally {
                        getRequestLatch.countDown();
                    }
                }
            });
        }
        if (debugMode) {
            getRequestLatch.await();
        } else {
            if (!getRequestLatch.await(LATCH_WAIT_TIMEOUT, TimeUnit.SECONDS)) {
                LOGGER.log(Level.SEVERE, "Waiting for all GET requests to complete has timed out.");
            }
        }
    } finally {
        executor.shutdownNow();
    }
    final ArrayList<Map.Entry<Integer, String>> responseEntryList = new ArrayList<Map.Entry<Integer, String>>(getResponses.entrySet());
    Collections.sort(responseEntryList, new Comparator<Map.Entry<Integer, String>>() {

        @Override
        public int compare(Map.Entry<Integer, String> o1, Map.Entry<Integer, String> o2) {
            return o1.getKey().compareTo(o2.getKey());
        }
    });
    StringBuilder messageBuilder = new StringBuilder("GET responses received: ").append(responseEntryList.size()).append("\n");
    for (Map.Entry<Integer, String> getResponseEntry : responseEntryList) {
        messageBuilder.append(String.format("GET response for message %02d: ", getResponseEntry.getKey())).append(getResponseEntry.getValue()).append('\n');
    }
    LOGGER.info(messageBuilder.toString());
    for (Map.Entry<Integer, String> entry : responseEntryList) {
        assertEquals(String.format("Unexpected GET notification response for message %02d", entry.getKey()), expectedResponse, entry.getValue());
    }
    assertEquals(MAX_MESSAGES, getResponses.size());
}