public EPServicesContext createServicesContext(
EPServiceProvider epServiceProvider, ConfigurationInformation configSnapshot) {
// JNDI context for binding resources
EngineEnvContext jndiContext = new EngineEnvContext();
EventTypeIdGenerator eventTypeIdGenerator;
if (configSnapshot.getEngineDefaults().getAlternativeContext() == null
|| configSnapshot
.getEngineDefaults()
.getAlternativeContext()
.getEventTypeIdGeneratorFactory()
== null) {
eventTypeIdGenerator = new EventTypeIdGeneratorImpl();
} else {
EventTypeIdGeneratorFactory eventTypeIdGeneratorFactory =
(EventTypeIdGeneratorFactory)
JavaClassHelper.instantiate(
EventTypeIdGeneratorFactory.class,
configSnapshot
.getEngineDefaults()
.getAlternativeContext()
.getEventTypeIdGeneratorFactory());
eventTypeIdGenerator =
eventTypeIdGeneratorFactory.create(
new EventTypeIdGeneratorContext(epServiceProvider.getURI()));
}
// Make services that depend on snapshot config entries
EventAdapterServiceImpl eventAdapterService =
new EventAdapterServiceImpl(
eventTypeIdGenerator,
configSnapshot.getEngineDefaults().getEventMeta().getAnonymousCacheSize());
init(eventAdapterService, configSnapshot);
// New read-write lock for concurrent event processing
ManagedReadWriteLock eventProcessingRWLock = new ManagedReadWriteLock("EventProcLock", false);
TimeSourceService timeSourceService = makeTimeSource(configSnapshot);
SchedulingServiceSPI schedulingService =
SchedulingServiceProvider.newService(timeSourceService);
SchedulingMgmtService schedulingMgmtService = new SchedulingMgmtServiceImpl();
EngineImportService engineImportService = makeEngineImportService(configSnapshot);
EngineSettingsService engineSettingsService =
new EngineSettingsService(
configSnapshot.getEngineDefaults(), configSnapshot.getPlugInEventTypeResolutionURIs());
DatabaseConfigService databaseConfigService =
makeDatabaseRefService(configSnapshot, schedulingService, schedulingMgmtService);
PluggableObjectCollection plugInViews = new PluggableObjectCollection();
plugInViews.addViews(
configSnapshot.getPlugInViews(), configSnapshot.getPlugInVirtualDataWindows());
PluggableObjectCollection plugInPatternObj = new PluggableObjectCollection();
plugInPatternObj.addPatternObjects(configSnapshot.getPlugInPatternObjects());
// exception handling
ExceptionHandlingService exceptionHandlingService =
initExceptionHandling(
epServiceProvider.getURI(),
configSnapshot.getEngineDefaults().getExceptionHandling(),
configSnapshot.getEngineDefaults().getConditionHandling());
// Statement context factory
Class systemVirtualDWViewFactory = null;
if (configSnapshot.getEngineDefaults().getAlternativeContext().getVirtualDataWindowViewFactory()
!= null) {
try {
systemVirtualDWViewFactory =
Class.forName(
configSnapshot
.getEngineDefaults()
.getAlternativeContext()
.getVirtualDataWindowViewFactory());
if (!JavaClassHelper.isImplementsInterface(
systemVirtualDWViewFactory, VirtualDataWindowFactory.class)) {
throw new ConfigurationException(
"Class "
+ systemVirtualDWViewFactory.getName()
+ " does not implement the interface "
+ VirtualDataWindowFactory.class.getName());
}
} catch (ClassNotFoundException e) {
throw new ConfigurationException("Failed to look up class " + systemVirtualDWViewFactory);
}
}
StatementContextFactory statementContextFactory =
new StatementContextFactoryDefault(
plugInViews, plugInPatternObj, systemVirtualDWViewFactory);
long msecTimerResolution =
configSnapshot.getEngineDefaults().getThreading().getInternalTimerMsecResolution();
if (msecTimerResolution <= 0) {
throw new ConfigurationException(
"Timer resolution configuration not set to a valid value, expecting a non-zero value");
}
TimerService timerService =
new TimerServiceImpl(epServiceProvider.getURI(), msecTimerResolution);
VariableService variableService =
new VariableServiceImpl(
configSnapshot.getEngineDefaults().getVariables().getMsecVersionRelease(),
schedulingService,
eventAdapterService,
null);
initVariables(variableService, configSnapshot.getVariables(), engineImportService);
TableService tableService = new TableServiceImpl();
StatementLockFactory statementLockFactory =
new StatementLockFactoryImpl(
configSnapshot.getEngineDefaults().getExecution().isFairlock(),
configSnapshot.getEngineDefaults().getExecution().isDisableLocking());
StreamFactoryService streamFactoryService =
StreamFactoryServiceProvider.newService(
epServiceProvider.getURI(),
configSnapshot.getEngineDefaults().getViewResources().isShareViews());
FilterServiceSPI filterService =
FilterServiceProvider.newService(
configSnapshot.getEngineDefaults().getExecution().getFilterServiceProfile(),
configSnapshot.getEngineDefaults().getExecution().isAllowIsolatedService());
MetricReportingServiceImpl metricsReporting =
new MetricReportingServiceImpl(
configSnapshot.getEngineDefaults().getMetricsReporting(), epServiceProvider.getURI());
NamedWindowService namedWindowService =
new NamedWindowServiceImpl(
schedulingService,
variableService,
tableService,
engineSettingsService.getEngineSettings().getExecution().isPrioritized(),
eventProcessingRWLock,
exceptionHandlingService,
configSnapshot.getEngineDefaults().getLogging().isEnableQueryPlan(),
metricsReporting);
ValueAddEventService valueAddEventService = new ValueAddEventServiceImpl();
valueAddEventService.init(
configSnapshot.getRevisionEventTypes(),
configSnapshot.getVariantStreams(),
eventAdapterService,
eventTypeIdGenerator);
StatementEventTypeRef statementEventTypeRef = new StatementEventTypeRefImpl();
StatementVariableRef statementVariableRef =
new StatementVariableRefImpl(variableService, tableService);
ThreadingService threadingService =
new ThreadingServiceImpl(configSnapshot.getEngineDefaults().getThreading());
InternalEventRouterImpl internalEventRouterImpl = new InternalEventRouterImpl();
StatementIsolationServiceImpl statementIsolationService = new StatementIsolationServiceImpl();
DeploymentStateService deploymentStateService = new DeploymentStateServiceImpl();
StatementMetadataFactory stmtMetadataFactory;
if (configSnapshot.getEngineDefaults().getAlternativeContext().getStatementMetadataFactory()
== null) {
stmtMetadataFactory = new StatementMetadataFactoryDefault();
} else {
stmtMetadataFactory =
(StatementMetadataFactory)
JavaClassHelper.instantiate(
StatementMetadataFactory.class,
configSnapshot
.getEngineDefaults()
.getAlternativeContext()
.getStatementMetadataFactory());
}
ContextManagementService contextManagementService = new ContextManagementServiceImpl();
SchedulableAgentInstanceDirectory schedulableAgentInstanceDirectory =
null; // not required for Non-HA.
PatternSubexpressionPoolEngineSvc patternSubexpressionPoolSvc = null;
if (configSnapshot.getEngineDefaults().getPatterns().getMaxSubexpressions() != null) {
patternSubexpressionPoolSvc =
new PatternSubexpressionPoolEngineSvc(
configSnapshot.getEngineDefaults().getPatterns().getMaxSubexpressions(),
configSnapshot.getEngineDefaults().getPatterns().isMaxSubexpressionPreventStart());
}
MatchRecognizeStatePoolEngineSvc matchRecognizeStatePoolEngineSvc = null;
if (configSnapshot.getEngineDefaults().getMatchRecognize().getMaxStates() != null) {
matchRecognizeStatePoolEngineSvc =
new MatchRecognizeStatePoolEngineSvc(
configSnapshot.getEngineDefaults().getMatchRecognize().getMaxStates(),
configSnapshot.getEngineDefaults().getMatchRecognize().isMaxStatesPreventStart());
}
// New services context
EPServicesContext services =
new EPServicesContext(
epServiceProvider.getURI(),
schedulingService,
eventAdapterService,
engineImportService,
engineSettingsService,
databaseConfigService,
plugInViews,
statementLockFactory,
eventProcessingRWLock,
null,
jndiContext,
statementContextFactory,
plugInPatternObj,
timerService,
filterService,
streamFactoryService,
namedWindowService,
variableService,
tableService,
timeSourceService,
valueAddEventService,
metricsReporting,
statementEventTypeRef,
statementVariableRef,
configSnapshot,
threadingService,
internalEventRouterImpl,
statementIsolationService,
schedulingMgmtService,
deploymentStateService,
exceptionHandlingService,
new PatternNodeFactoryImpl(),
eventTypeIdGenerator,
stmtMetadataFactory,
contextManagementService,
schedulableAgentInstanceDirectory,
patternSubexpressionPoolSvc,
matchRecognizeStatePoolEngineSvc,
new DataFlowServiceImpl(epServiceProvider, new DataFlowConfigurationStateServiceImpl()),
new ExprDeclaredServiceImpl(),
new ContextControllerFactoryFactorySvcImpl(),
new ContextManagerFactoryServiceImpl(),
new EPStatementFactoryDefault(),
new RegexHandlerFactoryDefault(),
new ViewableActivatorFactoryDefault() {});
// Engine services subset available to statements
statementContextFactory.setStmtEngineServices(services);
// Circular dependency
StatementLifecycleSvc statementLifecycleSvc =
new StatementLifecycleSvcImpl(epServiceProvider, services);
services.setStatementLifecycleSvc(statementLifecycleSvc);
// Observers to statement events
statementLifecycleSvc.addObserver(metricsReporting);
// Circular dependency
statementIsolationService.setEpServicesContext(services);
return services;
}