Examples with PersistenceReference org.wso2.siddhi.core.util.snapshot.PersistenceReference used on opensource projects

Example 1 with PersistenceReference

use of org.wso2.siddhi.core.util.snapshot.PersistenceReference in project siddhi by wso2.

the class SiddhiAppRuntime method persist.

public PersistenceReference persist() {
    try {
        // first, pause all the event sources
        sourceMap.values().forEach(list -> list.forEach(Source::pause));
        // take snapshots of execution units
        byte[] snapshots = siddhiAppContext.getSnapshotService().snapshot();
        // start the snapshot persisting task asynchronously
        AsyncSnapshotPersistor asyncSnapshotPersistor = new AsyncSnapshotPersistor(snapshots, siddhiAppContext.getSiddhiContext().getPersistenceStore(), siddhiAppContext.getName());
        String revision = asyncSnapshotPersistor.getRevision();
        Future future = siddhiAppContext.getExecutorService().submit(asyncSnapshotPersistor);
        return new PersistenceReference(future, revision);
    } finally {
        // at the end, resume the event sources
        sourceMap.values().forEach(list -> list.forEach(Source::resume));
    }
}

Example 2 with PersistenceReference

use of org.wso2.siddhi.core.util.snapshot.PersistenceReference in project siddhi by wso2.

the class PersistenceTestCase method persistenceTest3.

@Test(expectedExceptions = NoPersistenceStoreException.class, dependsOnMethods = "persistenceTest2")
public void persistenceTest3() throws Exception {
    log.info("persistence test 3 - no store defined");
    SiddhiManager siddhiManager = new SiddhiManager();
    String siddhiApp = "" + "@app:name('Test') " + "" + "define stream Stream1 (symbol string, price float, volume int); " + "define stream Stream2 (symbol string, price float, volume int); " + "" + "@info(name = 'query1') " + "from e1=Stream1[price>20] <2:5> -> e2=Stream2[price>20] " + "select e1[0].price as price1_0, e1[1].price as price1_1, e1[2].price as price1_2, " + "   e1[3].price as price1_3, e2.price as price2 " + "insert into OutputStream ;";
    QueryCallback queryCallback = new QueryCallback() {

        @Override
        public void receive(long timestamp, Event[] inEvents, Event[] removeEvents) {
            EventPrinter.print(timestamp, inEvents, removeEvents);
            eventArrived = true;
            for (Event inEvent : inEvents) {
                count++;
                AssertJUnit.assertArrayEquals(new Object[] { 25.6f, 47.6f, null, null, 45.7f }, inEvent.getData());
            }
        }
    };
    SiddhiAppRuntime siddhiAppRuntime = siddhiManager.createSiddhiAppRuntime(siddhiApp);
    siddhiAppRuntime.addCallback("query1", queryCallback);
    InputHandler stream1 = siddhiAppRuntime.getInputHandler("Stream1");
    InputHandler stream2 = siddhiAppRuntime.getInputHandler("Stream2");
    siddhiAppRuntime.start();
    stream1.send(new Object[] { "WSO2", 25.6f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "GOOG", 47.6f, 100 });
    Thread.sleep(100);
    stream1.send(new Object[] { "GOOG", 13.7f, 100 });
    Thread.sleep(100);
    AssertJUnit.assertEquals("Number of success events", 0, count);
    AssertJUnit.assertEquals("Event arrived", false, eventArrived);
    // persisting
    Thread.sleep(500);
    PersistenceReference persistenceReference = siddhiAppRuntime.persist();
    try {
        persistenceReference.getFuture().get();
    } catch (ExecutionException e) {
        throw e.getCause() instanceof NoPersistenceStoreException ? new NoPersistenceStoreException() : e;
    }
    // restarting siddhi app
    Thread.sleep(500);
    siddhiAppRuntime.shutdown();
}