public EPServiceProviderIsolated GetIsolationUnit(string name, int?optionalUnitId)
{
var serviceProviderIsolated = _isolatedProviders.Get(name);
if (serviceProviderIsolated != null)
{
return(serviceProviderIsolated);
}
FilterServiceSPI filterService = FilterServiceProvider.NewService(
_epServicesContext.LockManager,
_epServicesContext.RWLockManager,
_epServicesContext.ConfigSnapshot.EngineDefaults.Execution.FilterServiceProfile,
true);
var scheduleService = new SchedulingServiceImpl(
_epServicesContext.TimeSource,
_epServicesContext.LockManager);
var services = new EPIsolationUnitServices(name, currentUnitId, filterService, scheduleService);
serviceProviderIsolated = new EPServiceProviderIsolatedImpl(
name, services, _epServicesContext, _isolatedProviders);
_isolatedProviders.Put(name, serviceProviderIsolated);
return(serviceProviderIsolated);
}
/// <summary>Ctor. </summary>
/// <param name="isolatedServiceName">name of the isolated service</param>
/// <param name="services">isolated services</param>
/// <param name="unisolatedServices">engine services</param>
/// <param name="isolatedRuntime">the runtime for this isolated service</param>
public EPAdministratorIsolatedImpl(string isolatedServiceName, EPIsolationUnitServices services, EPServicesContext unisolatedServices, EPRuntimeIsolatedSPI isolatedRuntime)
{
_isolatedServiceName = isolatedServiceName;
_services = services;
_unisolatedServices = unisolatedServices;
_isolatedRuntime = isolatedRuntime;
}
/// <summary>Ctor. </summary>
/// <param name="svc">isolated services</param>
/// <param name="unisolatedSvc">engine services</param>
public EPRuntimeIsolatedImpl(EPIsolationUnitServices svc, EPServicesContext unisolatedSvc)
{
_services = svc;
_unisolatedServices = unisolatedSvc;
_threadWorkQueue = new ThreadWorkQueue();
_isSubselectPreeval = unisolatedSvc.EngineSettingsService.EngineSettings.Expression.IsSelfSubselectPreeval;
_isPrioritized = unisolatedSvc.EngineSettingsService.EngineSettings.Execution.IsPrioritized;
_isLatchStatementInsertStream = unisolatedSvc.EngineSettingsService.EngineSettings.Threading.IsInsertIntoDispatchPreserveOrder;
_threadLocalData = ThreadLocalManager.Create(CreateLocalData);
}
/// <summary>Ctor. </summary>
/// <param name="name">name of isolated service</param>
/// <param name="isolatedServices">filter and scheduling service isolated</param>
/// <param name="unisolatedSvc">engine services</param>
/// <param name="providers">names and isolated service providers</param>
public EPServiceProviderIsolatedImpl(String name,
EPIsolationUnitServices isolatedServices,
EPServicesContext unisolatedSvc,
IDictionary <String, EPServiceProviderIsolatedImpl> providers)
{
_name = name;
_providers = providers;
_isolatedServices = isolatedServices;
_runtime = new EPRuntimeIsolatedImpl(isolatedServices, unisolatedSvc);
_admin = new EPAdministratorIsolatedImpl(name, isolatedServices, unisolatedSvc, _runtime);
}
public StatementContext MakeContext(
int statementId,
string statementName,
string expression,
StatementType statementType,
EPServicesContext engineServices,
IDictionary <string, object> optAdditionalContext,
bool isFireAndForget,
Attribute[] annotations,
EPIsolationUnitServices isolationUnitServices,
bool stateless,
StatementSpecRaw statementSpecRaw,
IList <ExprSubselectNode> subselectNodes,
bool writesToTables,
object statementUserObject)
{
// Allocate the statement's schedule bucket which stays constant over it's lifetime.
// The bucket allows callbacks for the same time to be ordered (within and across statements) and thus deterministic.
var scheduleBucket = engineServices.SchedulingMgmtService.AllocateBucket();
// Create a lock for the statement
IReaderWriterLock defaultStatementAgentInstanceLock;
// For on-delete statements, use the create-named-window statement lock
var optCreateWindowDesc = statementSpecRaw.CreateWindowDesc;
var optOnTriggerDesc = statementSpecRaw.OnTriggerDesc;
if ((optOnTriggerDesc != null) && (optOnTriggerDesc is OnTriggerWindowDesc))
{
var windowName = ((OnTriggerWindowDesc)optOnTriggerDesc).WindowName;
if (engineServices.TableService.GetTableMetadata(windowName) == null)
{
defaultStatementAgentInstanceLock = engineServices.NamedWindowMgmtService.GetNamedWindowLock(windowName);
if (defaultStatementAgentInstanceLock == null)
{
throw new EPStatementException("Named window or table '" + windowName + "' has not been declared", expression);
}
}
else
{
defaultStatementAgentInstanceLock = engineServices.StatementLockFactory.GetStatementLock(statementName, annotations, stateless);
}
}
// For creating a named window, save the lock for use with on-delete/on-merge/on-Update etc. statements
else if (optCreateWindowDesc != null)
{
defaultStatementAgentInstanceLock =
engineServices.NamedWindowMgmtService.GetNamedWindowLock(optCreateWindowDesc.WindowName);
if (defaultStatementAgentInstanceLock == null)
{
defaultStatementAgentInstanceLock = engineServices.StatementLockFactory.GetStatementLock(
statementName, annotations, false);
engineServices.NamedWindowMgmtService.AddNamedWindowLock(
optCreateWindowDesc.WindowName, defaultStatementAgentInstanceLock, statementName);
}
}
else
{
defaultStatementAgentInstanceLock = engineServices.StatementLockFactory.GetStatementLock(
statementName, annotations, stateless);
}
StatementMetricHandle stmtMetric = null;
if (!isFireAndForget)
{
stmtMetric = engineServices.MetricsReportingService.GetStatementHandle(statementId, statementName);
}
var annotationData = AnnotationAnalysisResult.AnalyzeAnnotations(annotations);
var hasVariables = statementSpecRaw.HasVariables || (statementSpecRaw.CreateContextDesc != null);
var hasTableAccess = StatementContextFactoryUtil.DetermineHasTableAccess(subselectNodes, statementSpecRaw, engineServices);
var epStatementHandle = new EPStatementHandle(
statementId, statementName, expression, statementType, expression,
hasVariables, stmtMetric,
annotationData.Priority,
annotationData.IsPremptive,
hasTableAccess,
engineServices.MultiMatchHandlerFactory.GetDefaultHandler());
var patternContextFactory = new PatternContextFactoryDefault();
var optionalCreateNamedWindowName = statementSpecRaw.CreateWindowDesc != null
? statementSpecRaw.CreateWindowDesc.WindowName
: null;
var viewResolutionService = new ViewResolutionServiceImpl(
_viewRegistry, optionalCreateNamedWindowName, _systemVirtualDwViewFactory);
var patternResolutionService =
new PatternObjectResolutionServiceImpl(_patternObjectClasses);
var schedulingService = engineServices.SchedulingService;
var filterService = engineServices.FilterService;
if (isolationUnitServices != null)
{
filterService = isolationUnitServices.FilterService;
schedulingService = isolationUnitServices.SchedulingService;
}
var scheduleAudit = AuditEnum.SCHEDULE.GetAudit(annotations);
if (scheduleAudit != null)
{
schedulingService = new SchedulingServiceAudit(
engineServices.EngineURI, statementName, schedulingService);
}
StatementAIResourceRegistry statementAgentInstanceRegistry = null;
ContextDescriptor contextDescriptor = null;
var optionalContextName = statementSpecRaw.OptionalContextName;
if (optionalContextName != null)
{
contextDescriptor = engineServices.ContextManagementService.GetContextDescriptor(optionalContextName);
// allocate a per-instance registry of aggregations and prev/prior/subselect
if (contextDescriptor != null)
{
statementAgentInstanceRegistry = contextDescriptor.AiResourceRegistryFactory.Invoke();
}
}
var countSubexpressions = engineServices.ConfigSnapshot.EngineDefaults.PatternsConfig.MaxSubexpressions != null;
PatternSubexpressionPoolStmtSvc patternSubexpressionPoolStmtSvc = null;
if (countSubexpressions)
{
var stmtCounter = new PatternSubexpressionPoolStmtHandler();
patternSubexpressionPoolStmtSvc =
new PatternSubexpressionPoolStmtSvc(engineServices.PatternSubexpressionPoolSvc, stmtCounter);
engineServices.PatternSubexpressionPoolSvc.AddPatternContext(statementName, stmtCounter);
}
var countMatchRecogStates = engineServices.ConfigSnapshot.EngineDefaults.MatchRecognizeConfig.MaxStates != null;
MatchRecognizeStatePoolStmtSvc matchRecognizeStatePoolStmtSvc = null;
if (countMatchRecogStates && statementSpecRaw.MatchRecognizeSpec != null)
{
var stmtCounter = new MatchRecognizeStatePoolStmtHandler();
matchRecognizeStatePoolStmtSvc = new MatchRecognizeStatePoolStmtSvc(engineServices.MatchRecognizeStatePoolEngineSvc, stmtCounter);
engineServices.MatchRecognizeStatePoolEngineSvc.AddPatternContext(statementName, stmtCounter);
}
AgentInstanceScriptContext defaultAgentInstanceScriptContext = null;
if (statementSpecRaw.ScriptExpressions != null && !statementSpecRaw.ScriptExpressions.IsEmpty())
{
defaultAgentInstanceScriptContext = new AgentInstanceScriptContext();
}
// allow a special context controller factory for testing
var contextControllerFactoryService =
GetContextControllerFactoryService(annotations);
// may use resource tracking
var statementResourceService = new StatementResourceService(optionalContextName != null);
StatementExtensionSvcContext extensionSvcContext = new ProxyStatementExtensionSvcContext
{
ProcStmtResources = () => statementResourceService,
ProcExtractStatementResourceHolder = resultOfStart => StatementResourceHolderUtil.PopulateHolder(resultOfStart)
};
// Create statement context
return(new StatementContext(
_stmtEngineServices,
schedulingService,
scheduleBucket,
epStatementHandle,
viewResolutionService,
patternResolutionService,
extensionSvcContext,
new StatementStopServiceImpl(),
patternContextFactory,
filterService,
new StatementResultServiceImpl(
statementName,
engineServices.StatementLifecycleSvc,
engineServices.MetricsReportingService,
engineServices.ThreadingService),
engineServices.InternalEventEngineRouteDest,
annotations,
statementAgentInstanceRegistry,
defaultStatementAgentInstanceLock,
contextDescriptor,
patternSubexpressionPoolStmtSvc,
matchRecognizeStatePoolStmtSvc,
stateless,
contextControllerFactoryService,
defaultAgentInstanceScriptContext,
AggregationServiceFactoryServiceImpl.DEFAULT_FACTORY,
engineServices.ScriptingService,
writesToTables,
statementUserObject,
StatementSemiAnonymousTypeRegistryImpl.INSTANCE,
annotationData.Priority));
}
/// <summary>
/// Dispose for destroying an engine instance: sets references to null and clears thread-locals
/// </summary>
public void Dispose()
{
_services = null;
_threadLocalData = null;
}
public void NewStatement(int stmtId, string stmtName, EPIsolationUnitServices isolatedServices)
{
Log.Info("New statement '" + stmtName + "' unit " + isolatedServices.Name);
}