Java Configuration类代码示例

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
/**
 * @param args
 */
public static void main(String[] args) {
	Configuration config = new Configuration();
	//config.addEventType("BasicEvent", BasicEvent.class);
	config.addEventType("PerfEvent", PerfEvent.class);

	/* If we gonna use custom timestamps - use this
	ConfigurationEventTypeLegacy cetl = new  ConfigurationEventTypeLegacy();
	cetl.setStartTimestampPropertyName("timestamp");
	cetl.setEndTimestampPropertyName("timestamp");
	config.addEventType("PerfEvent", PerfEvent.class.getName(), cetl);
	*/
	// Get engine instance
	EPServiceProvider epService = EPServiceProviderManager.getDefaultProvider(config);

	String stmt = "insert into OpsEvent select ciId, 'cpu' as name, 'open' as state, 'count:' || cast(count(1),string) as cnt from PerfEvent.win:time(1 min) where metrics('cpu') > 10 group by ciId having count(1) > 0 output first every 3 minutes";
	
	EPStatement statement = epService.getEPAdministrator().createEPL(stmt, "test");
	assertTrue(statement != null);		

}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
@Test
public void testTimestamp() {
	final Configuration cepConfig = new Configuration();
	cepConfig.addEventType("Event", EapEvent.class.getName());
	final EPServiceProvider cep = EPServiceProviderManager.getProvider("myCEPEngine", cepConfig);
	final EPRuntime cepRT = cep.getEPRuntime();
	final EPAdministrator cepAdm = cep.getEPAdministrator();

	// create statement
	final EPStatement timeStatement = cepAdm.createEPL("select count(*) from Event.win:time(1 hour)");
	timeStatement.addListener(new CEPListener());

	// create events
	final List<EapEvent> ratingEvents = this.createRatingEvents();
	this.sortEventListByDate(ratingEvents);

	// pass events to Esper engine
	for (final EapEvent event : ratingEvents) {
		cepRT.sendEvent(new TimerControlEvent(TimerControlEvent.ClockType.CLOCK_EXTERNAL));
		// System.out.println(new
		// CurrentTimeEvent(event.getTimestamp().getTime()).toString());
		cepRT.sendEvent(new CurrentTimeEvent(event.getTimestamp().getTime()));
		cepRT.sendEvent(event);
	}
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
/**
 * initialize all the variables from the Configuration
 */
private void initVariables(String strategyName, Configuration configuration) {

	try {
		Map<String, ConfigurationVariable> variables = configuration.getVariables();
		for (Map.Entry<String, ConfigurationVariable> entry : variables.entrySet()) {
			String key = entry.getKey().replace("_", ".");
			String obj = ConfigurationUtil.getStrategyConfig(strategyName).getString(key);
			if (obj != null) {
				Class<?> clazz = Class.forName(entry.getValue().getType());
				Object castedObj = JavaClassHelper.parse(clazz, obj);
				entry.getValue().setInitializationValue(castedObj);
			}
		}
	} catch (ClassNotFoundException e) {
		throw new RuleServiceException(e);
	}
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
public void testIt() {
    URL url = FileUtil.class.getClassLoader().getResource("esper-kafka-sample-config.xml");
    assertNotNull("Failed to find sample config file", url);

    Configuration configuration = new Configuration();
    configuration.configure(url);

    ConfigurationPluginLoader config = configuration.getPluginLoaders().get(0);
    assertEquals(EsperIOKafkaInputAdapterPlugin.class.getName(), config.getClassName());

    Properties props = config.getConfigProperties();
    assertEquals(DEV_BOOTSTRAP_SERVER, props.getProperty(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG));
    assertEquals(org.apache.kafka.common.serialization.StringDeserializer.class.getName(), props.getProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG));
    assertEquals("com.mycompany.MyCustomDeserializer", props.getProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG));
    assertEquals("my_group_id", props.getProperty(ConsumerConfig.GROUP_ID_CONFIG));

    assertEquals("my_topic", props.get(EsperIOKafkaConfig.TOPICS_CONFIG));
    assertEquals(EsperIOKafkaInputProcessorDefault.class.getName(), props.get(EsperIOKafkaConfig.INPUT_PROCESSOR_CONFIG));
    assertEquals(EsperIOKafkaInputSubscriberByTopicList.class.getName(), props.get(EsperIOKafkaConfig.INPUT_SUBSCRIBER_CONFIG));
    assertEquals(EsperIOKafkaInputTimestampExtractorConsumerRecord.class.getName(), props.get(EsperIOKafkaConfig.INPUT_TIMESTAMPEXTRACTOR_CONFIG));
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
public void setUp() {
    Configuration configuration = new Configuration();
    configuration.getEngineDefaults().getThreading().setInternalTimerEnabled(false);
    configuration.addEventType("MarketDataEvent", MarketDataEvent.class.getName());

    epService = EPServiceProviderManager.getProvider("TestTicksPerSecondStatement", configuration);
    epService.initialize();
    epService.getEPRuntime().sendEvent(new CurrentTimeEvent(0));

    new TicksPerSecondStatement(epService.getEPAdministrator());
    TicksFalloffStatement stmt = new TicksFalloffStatement(epService.getEPAdministrator());
    listener = new SupportUpdateListener();
    stmt.addListener(listener);

    // Use external clocking for the test
    epService.getEPRuntime().sendEvent(new TimerControlEvent(TimerControlEvent.ClockType.CLOCK_EXTERNAL));
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
/**
 * {@inheritDoc}
 *
 * @param map
 * @param tc
 * @param oc
 */
@Override
public void prepare(@SuppressWarnings("rawtypes") Map map, TopologyContext tc, OutputCollector oc) {
    this.collector = oc;
    Configuration cepConfig = new Configuration();
    if (this.eventTypes == null || (this.objectStatements == null && this.statements == null)) {
        throw new FailedException("Event types cannot be null and at least one type of statement has to be not null");
    }
    for (Map.Entry<GlobalStreamId, Grouping> a : tc.getThisSources().entrySet()) {
        Fields f = tc.getComponentOutputFields(a.getKey());
        if (!this.eventTypes.keySet().containsAll(f.toList())) {
            throw new FailedException("Event types and fields from source streams do not match: Event Types="
                    + Arrays.toString(this.eventTypes.keySet().toArray())
                    + " Stream Fields=" + Arrays.toString(f.toList().toArray()));
        }
        cepConfig.addEventType(a.getKey().get_componentId() + "_" + a.getKey().get_streamId(), this.eventTypes);
    }
    this.epService = EPServiceProviderManager.getDefaultProvider(cepConfig);
    this.epService.initialize();
    if (!processStatemens()) {
        throw new FailedException("At least one type of statement has to be not empty");
    }
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
public void setUp() throws Exception {
    AgentInstanceContext agentInstanceContext = SupportStatementContextFactory.makeAgentInstanceContext();

    SelectExprEventTypeRegistry selectExprEventTypeRegistry = new SelectExprEventTypeRegistry("abc", new StatementEventTypeRefImpl());
    SelectExprProcessorHelper selectFactory = new SelectExprProcessorHelper(Collections.<Integer>emptyList(), SupportSelectExprFactory.makeSelectListFromIdent("theString", "s0"),
            Collections.<SelectExprStreamDesc>emptyList(), null, null, false, new SupportStreamTypeSvc1Stream(), SupportEventAdapterService.getService(), null, selectExprEventTypeRegistry, agentInstanceContext.getEngineImportService(), 1, "stmtname", null, new Configuration(), null, new TableServiceImpl(), null);
    SelectExprProcessorForge selectForge = selectFactory.getForge();
    supportAggregationService = new SupportAggregationService();

    ExprNode[] groupKeyNodes = new ExprNode[2];
    groupKeyNodes[0] = SupportExprNodeFactory.makeIdentNode("intPrimitive", "s0");
    groupKeyNodes[1] = SupportExprNodeFactory.makeIdentNode("intBoxed", "s0");

    ResultSetProcessorRowPerGroupForge forge = new ResultSetProcessorRowPerGroupForge(selectForge.getResultEventType(), selectForge, groupKeyNodes, null, true, false, null, false, false, false, false, null, null, 1, null);
    ResultSetProcessorFactory factory = forge.getResultSetProcessorFactory(agentInstanceContext.getStatementContext(), false);
    processor = (ResultSetProcessorRowPerGroup) factory.instantiate(null, supportAggregationService, agentInstanceContext);
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
public void configure(Configuration configuration) throws Exception {
    applyMetricsConfig(configuration, -1, 7000, true);

    ConfigurationMetricsReporting.StmtGroupMetrics groupOne = new ConfigurationMetricsReporting.StmtGroupMetrics();
    groupOne.setInterval(8000);
    groupOne.addIncludeLike("%GroupOne%");
    groupOne.setReportInactive(true);
    configuration.getEngineDefaults().getMetricsReporting().addStmtGroup("GroupOneStatements", groupOne);

    ConfigurationMetricsReporting.StmtGroupMetrics groupTwo = new ConfigurationMetricsReporting.StmtGroupMetrics();
    groupTwo.setInterval(6000);
    groupTwo.setDefaultInclude(true);
    groupTwo.addExcludeLike("%Default%");
    groupTwo.addExcludeLike("%Metrics%");
    configuration.getEngineDefaults().getMetricsReporting().addStmtGroup("GroupTwoNonDefaultStatements", groupTwo);

    ConfigurationMetricsReporting.StmtGroupMetrics groupThree = new ConfigurationMetricsReporting.StmtGroupMetrics();
    groupThree.setInterval(-1);
    groupThree.addIncludeLike("%Metrics%");
    configuration.getEngineDefaults().getMetricsReporting().addStmtGroup("MetricsStatements", groupThree);
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
public void run(EPServiceProvider defaultEPService) throws Exception {
    assertNoEngineJMX();

    Configuration configuration = SupportConfigFactory.getConfiguration();
    configuration.getEngineDefaults().getMetricsReporting().setJmxEngineMetrics(true);
    EPServiceProvider epService = EPServiceProviderManager.getProvider(ENGINE_NAME, configuration);

    epService.getEPRuntime().sendEvent(new CurrentTimeEvent(DateTime.parseDefaultMSec("2002-05-1T08:00:00.000")));
    epService.getEPAdministrator().getConfiguration().addEventType(SupportBean.class);

    epService.getEPAdministrator().createEPL("select * from pattern [every a=SupportBean(theString like 'A%') -> b=SupportBean(theString like 'B') where timer:within(a.intPrimitive)]");
    epService.getEPRuntime().sendEvent(new SupportBean("A1", 10));
    epService.getEPRuntime().sendEvent(new SupportBean("A2", 60));

    assertEngineJMX();

    epService.destroy();

    assertNoEngineJMX();
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
/**
 * Configure the Esper Service Provider to create the appropriate Esper
 * Runtime.
 * 
 * @throws IOException
 * @throws EPException
 */
private void configureEPServiceProvider() throws EPException, IOException {
	if (LOG.isDebugEnabled()) {
		LOG.debug("Configuring the Esper Service Provider with name: " + providerURI);
	}
	if (this.configuration != null && this.configuration.exists()) {
		Configuration esperConfiguration = new Configuration();
		esperConfiguration = esperConfiguration.configure(this.configuration.getFile());
		epServiceProvider = EPServiceProviderManager.getProvider(providerURI, esperConfiguration);
		LOG.info("Esper configured with a user-provided configuration", esperConfiguration);
	} else {
		epServiceProvider = EPServiceProviderManager.getProvider(providerURI);
	}
	if (LOG.isDebugEnabled()) {
		LOG.debug("Completed configuring the Esper Service Provider with name: " + providerURI);
	}
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
private EPServiceProvider getServiceProvider(String context) throws IOException {
    EPServiceProvider serviceProvider = engineState.value();
    if (serviceProvider != null) {
        return serviceProvider;
    }
    synchronized (lock) {
        serviceProvider = engineState.value();
        if (serviceProvider == null) {
            Configuration configuration = new Configuration();
            configuration.getEngineDefaults().getThreading().setInternalTimerEnabled(false);
            serviceProvider = EPServiceProviderManager.getProvider(context, configuration);
            serviceProvider.getEPAdministrator().getConfiguration().addEventType(inputType.getTypeClass());
            serviceProvider.getEPRuntime().sendEvent(new CurrentTimeEvent(0));
            EPStatement statement = query.createStatement(serviceProvider.getEPAdministrator());

            statement.addListener((newData, oldData) -> {
                for (EventBean event : newData) {
                    EsperSelectFunction<OUT> userFunction = getUserFunction();
                    try {
                        output.collect(new StreamRecord<>((userFunction.select(event))));
                    } catch (Exception e) {
                        throw new RuntimeException(e);
                    }
                }
            });
            this.engineState.update(serviceProvider);
            return serviceProvider;

        } else {
            return engineState.value();
        }
    }
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
/**
 * Initalizes the Sensor
 *
 * @param instanceId instance id where the sensor running
 * @param poolSize   sensor poolsize value
 * @throws Exception throws if any error while initializing sensor.
 */
public void init(int instanceId, int poolSize) throws Exception {
    long start = System.currentTimeMillis();
    logger.info(">>> Sensor initialization started.");

    this.instanceId = instanceId - 1;
    this.poolSize = poolSize;

    Configuration cfg = new Configuration();
    cfg.addEventType("PerfEvent", PerfEvent.class.getName());
    cfg.addEventType("DelayedPerfEvent", DelayedPerfEvent.class.getName());
    cfg.addEventType("OpsEvent", OpsEvent.class.getName());
    cfg.addEventType("OpsCloseEvent", OpsCloseEvent.class.getName());
    cfg.addEventType("ChannelDownEvent", ChannelDownEvent.class.getName());

    ConfigurationEngineDefaults.Threading ct = cfg.getEngineDefaults().getThreading();
    ct.setThreadPoolInbound(true);
    ct.setThreadPoolInboundNumThreads(ESPER_INBOUND_THREADS);
    ct.setThreadPoolOutbound(true);
    ct.setThreadPoolOutboundNumThreads(ESPER_OUTBOUND_THREADS);
    ct.setThreadPoolRouteExec(true);
    ct.setThreadPoolRouteExecNumThreads(ESPER_ROUTE_EXEC_THREADS);
    ct.setThreadPoolTimerExec(true);
    ct.setThreadPoolTimerExecNumThreads(ESPER_TIMER_THREADS);

    this.epService = EPServiceProviderManager.getDefaultProvider(cfg);
    loadAllStatements();
    this.isInited = true;

    long tt = TimeUnit.SECONDS.convert((System.currentTimeMillis() - start), TimeUnit.MILLISECONDS);
    logger.info(">>> Sensor initialization completed. Took " + tt + " seconds!!!");
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
public EsperOperation() {
	Configuration cepConfig = new Configuration();
	cepConfig.addEventType("StockTick", Stock.class.getName());
	EPServiceProvider cep = EPServiceProviderManager.getProvider(
			"myCEPEngine", cepConfig);
	cepRT = cep.getEPRuntime();

	EPAdministrator cepAdm = cep.getEPAdministrator();
	EPStatement cepStatement = cepAdm
			.createEPL("select sum(price),product from "
					+ "StockTick.win:time_batch(5 sec) "
					+ "group by product");

	cepStatement.addListener(new CEPListener());
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
@Test
public void testContextQuery() {
	final Configuration cepConfig = new Configuration();
	cepConfig.addEventType("Event", EapEvent.class.getName());
	final EPServiceProvider cep = EPServiceProviderManager.getProvider("myCEPEngine", cepConfig);
	final EPRuntime cepRT = cep.getEPRuntime();

	final EPAdministrator cepAdm = cep.getEPAdministrator();

	cepAdm.createEPL("" + "CREATE CONTEXT NestedContext " + "CONTEXT SegmentedByLocation PARTITION BY values('Location') FROM Event, " + "CONTEXT SegmentedByTime INITIATED BY Event(values('Action')='Ende') TERMINATED AFTER 1 hour, " + "CONTEXT SegmentedByRating PARTITION BY values('Rating') FROM Event");

	final EPStatement transformationStatement = cepAdm.createEPL("" + "CONTEXT NestedContext " + "SELECT ID, values('Location'), values('Rating'), count(*) " + "FROM Event " + "GROUP BY values('Location'), values('Rating') " + "OUTPUT LAST EVERY 30 minute");

	transformationStatement.addListener(new CEPListener());

	final List<EapEvent> events = new ArrayList<EapEvent>();
	events.addAll(this.createRatingEvents());
	events.addAll(this.createKinoEvents());
	this.sortEventListByDate(events);

	for (final EapEvent event : events) {
		cepRT.sendEvent(new TimerControlEvent(TimerControlEvent.ClockType.CLOCK_EXTERNAL));
		cepRT.sendEvent(new CurrentTimeEvent(event.getTimestamp().getTime()));
		cepRT.sendEvent(event);
	}

	cepRT.sendEvent(new TimerControlEvent(TimerControlEvent.ClockType.CLOCK_INTERNAL));
}
 

import com.espertech.esper.client.Configuration; //导入依赖的package包/类
/**
 * Method in which we start the CEP engine
 * 
 */
private void startCEPEngine() {
	Configuration cepConfig = new Configuration();
	this.epService = EPServiceProviderManager.getProvider("CityPulse Event Detection engine", cepConfig);
	logger.info("EventDetection: CEP engine started.");

}