Example usage for java.util.concurrent ConcurrentMap size

Introduction

In this page you can find the example usage for java.util.concurrent ConcurrentMap size.

Prototype

int size();

Source Link

Document

Returns the number of key-value mappings in this map.

Usage

From source file:org.silverpeas.core.viewer.service.ViewServiceConcurrencyDemonstrationTest.java

@Test
public void demonstrateConcurrencyManagementWithTwoDifferentConversionsAtSameTime() throws Exception {
    if (canPerformViewConversionTest()) {
        final List<Throwable> throwables = new ArrayList<>();

        final ConcurrentMap serviceCache = (ConcurrentMap) FieldUtils.readField(viewService, "cache", true);
        assertThat(serviceCache.size(), is(0));

        final int NB_VIEW_CALLS = 100;

        for (int i = 0; i < NB_VIEW_CALLS; i++) {
            SubThreadManager.addAndStart(new Thread(new Runnable() {
                @Override//from  w w  w.j  a  v a2  s . c  om
                public void run() {
                    try {
                        viewService.getDocumentView(ViewerContext.from(getSimpleDocumentNamed("file.odp")));
                    } catch (Exception ignore) {
                    }
                }
            }));
            SubThreadManager.addAndStart(new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        viewService.getDocumentView(ViewerContext.from(getSimpleDocumentNamed("file.pdf")));
                    } catch (Exception ignore) {
                    }
                }
            }));
        }

        SubThreadManager.addAndStart(new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(500);

                    // Technical verification
                    assertThat(getTemporaryPath().listFiles(), arrayWithSize(4));

                } catch (Throwable e) {
                    throwables.add(e);
                    SubThreadManager.killAll();
                }
            }
        }));

        // Waiting for all thread ends
        SubThreadManager.joinAll(60000);

        for (Throwable throwable : throwables) {
            throw new RuntimeException(throwable);
        }

        assertThat(serviceCache.size(), is(0));
        assertThat(getTemporaryPath().listFiles(), arrayWithSize(4));
    }
}

From source file:org.wso2.carbon.stream.processor.core.persistence.PersistenceManager.java

private void persistAndSendControlMessage() {
    ConcurrentMap<String, SiddhiAppRuntime> siddhiAppRuntimeMap = StreamProcessorDataHolder.getSiddhiManager()
            .getSiddhiAppRuntimeMap();//from   w w  w . j  ava2  s  .c o m
    String[] siddhiRevisionArray = new String[siddhiAppRuntimeMap.size()];
    int siddhiAppCount = 0;
    for (SiddhiAppRuntime siddhiAppRuntime : siddhiAppRuntimeMap.values()) {
        PersistenceReference persistenceReference = siddhiAppRuntime.persist();
        Future fullStateFuture = persistenceReference.getFullStateFuture();
        try {
            if (fullStateFuture != null) {
                fullStateFuture.get(60000, TimeUnit.MILLISECONDS);
            } else {
                for (Future future : persistenceReference.getIncrementalStateFuture()) {
                    future.get(60000, TimeUnit.MILLISECONDS);
                }
            }
        } catch (Throwable e) {
            log.error(
                    "Active Node: Persisting of Siddhi app is not successful. Check if app deployed properly");
        }
        siddhiRevisionArray[siddhiAppCount] = sequenceIDGenerator.incrementAndGet()
                + HAConstants.PERSISTED_APP_SPLIT_DELIMITER + persistenceReference.getRevision();
        siddhiAppCount++;
        if (log.isDebugEnabled()) {
            log.debug("Revision " + persistenceReference.getRevision() + " of siddhi App "
                    + siddhiAppRuntime.getName() + " persisted successfully");
        }
    }
    if (haManager != null && haManager.isActiveNode() && haManager.isPassiveNodeAdded()) {
        if (log.isDebugEnabled()) {
            log.debug("Control Message is sent to the passive node - " + Arrays.toString(siddhiRevisionArray));
        }
        sendControlMessageToPassiveNode(siddhiRevisionArray);
    }
    if (StreamProcessorDataHolder.getNodeInfo() != null) {
        StreamProcessorDataHolder.getNodeInfo().setLastPersistedTimestamp(System.currentTimeMillis());
    }
    log.info("siddhi Apps are persisted successfully");
}