#pragma warning disable 612,618
internal static PlacementStrategy GetPlacementStrategy(Type grainClass)
{
PlacementStrategy placement;
if (GetPlacementStrategy <StatelessWorkerAttribute>(
grainClass,
(StatelessWorkerAttribute attr) =>
{
return(new StatelessWorkerPlacement(attr.MaxLocalWorkers));
},
out placement))
{
return(placement);
}
if (GetPlacementStrategy <PlacementAttribute>(
grainClass,
a => a.PlacementStrategy,
out placement))
{
return(placement);
}
return(PlacementStrategy.GetDefault());
}
public ActivationData(ActivationAddress addr, string genericArguments, PlacementStrategy placedUsing, IActivationCollector collector, TimeSpan ageLimit)
{
if (null == addr)
{
throw new ArgumentNullException("addr");
}
if (null == placedUsing)
{
throw new ArgumentNullException("placedUsing");
}
if (null == collector)
{
throw new ArgumentNullException("collector");
}
logger = TraceLogger.GetLogger("ActivationData", TraceLogger.LoggerType.Runtime);
ResetKeepAliveRequest();
Address = addr;
State = ActivationState.Create;
PlacedUsing = placedUsing;
if (!Grain.IsSystemTarget && !Constants.IsSystemGrain(Grain))
{
this.collector = collector;
}
CollectionAgeLimit = ageLimit;
GrainReference = GrainReference.FromGrainId(addr.Grain, genericArguments,
Grain.IsSystemTarget ? addr.Silo : null);
}
public GrainTypeManager(
ILocalSiloDetails siloDetails,
ApplicationPartManager applicationPartManager,
DefaultPlacementStrategy defaultPlacementStrategy,
SerializationManager serializationManager,
MultiClusterRegistrationStrategyManager multiClusterRegistrationStrategyManager,
LoggerWrapper <GrainTypeManager> logger,
IOptions <GrainClassOptions> grainClassOptions)
{
var localTestMode = siloDetails.SiloAddress.Endpoint.Address.Equals(IPAddress.Loopback);
this.logger = logger;
this.defaultPlacementStrategy = defaultPlacementStrategy.PlacementStrategy;
this.serializationManager = serializationManager;
this.multiClusterRegistrationStrategyManager = multiClusterRegistrationStrategyManager;
grainInterfaceMap = new GrainInterfaceMap(localTestMode, this.defaultPlacementStrategy);
ClusterGrainInterfaceMap = grainInterfaceMap;
grainInterfaceMapsBySilo = new Dictionary <SiloAddress, GrainInterfaceMap>();
var grainClassFeature = applicationPartManager.CreateAndPopulateFeature <GrainClassFeature>();
this.grainTypes = CreateGrainTypeMap(grainClassFeature, grainClassOptions.Value);
var grainInterfaceFeature = applicationPartManager.CreateAndPopulateFeature <GrainInterfaceFeature>();
this.invokers = CreateInvokerMap(grainInterfaceFeature);
this.InitializeInterfaceMap();
}
public static PlacementResult SpecifyCreation(
SiloAddress silo,
ActivationId activationId,
PlacementStrategy placement,
string grainType)
{
if (silo == null)
{
throw new ArgumentNullException(nameof(silo));
}
if (activationId == null)
{
throw new ArgumentNullException(nameof(activationId));
}
if (placement == null)
{
throw new ArgumentNullException(nameof(placement));
}
if (string.IsNullOrWhiteSpace(grainType))
{
throw new ArgumentException("'grainType' must contain a valid type name.", nameof(grainType));
}
return(new PlacementResult
{
Activation = activationId,
Silo = silo,
PlacementStrategy = placement,
GrainType = grainType
});
}
public GrainTypeManager(
ILocalSiloDetails siloDetails,
IApplicationPartManager applicationPartManager,
PlacementStrategy defaultPlacementStrategy,
SerializationManager serializationManager,
ILogger <GrainTypeManager> logger,
IOptions <GrainClassOptions> grainClassOptions)
{
this.logger = logger;
this.defaultPlacementStrategy = defaultPlacementStrategy;
this.serializationManager = serializationManager;
grainInterfaceMap = new GrainInterfaceMap(this.defaultPlacementStrategy);
ClusterGrainInterfaceMap = grainInterfaceMap;
GrainTypeResolver = grainInterfaceMap.GetGrainTypeResolver();
grainInterfaceMapsBySilo = new Dictionary <SiloAddress, GrainInterfaceMap>();
var grainClassFeature = applicationPartManager.CreateAndPopulateFeature <GrainClassFeature>();
this.grainTypes = CreateGrainTypeMap(grainClassFeature, grainClassOptions.Value);
var grainInterfaceFeature = applicationPartManager.CreateAndPopulateFeature <GrainInterfaceFeature>();
this.invokers = CreateInvokerMap(grainInterfaceFeature);
this.InitializeInterfaceMap();
}
public override string ToString()
{
var placementStr = IsNewPlacement ? PlacementStrategy.ToString() : "*not-new*";
return(String.Format("PlacementResult({0}, {1}, {2}, {3})",
Silo, Activation, placementStr, GrainType));
}
SpecifyCreation(
SiloAddress silo,
PlacementStrategy placement,
string grainType)
{
if (silo == null)
{
throw new ArgumentNullException("silo");
}
if (placement == null)
{
throw new ArgumentNullException("placement");
}
if (string.IsNullOrWhiteSpace(grainType))
{
throw new ArgumentException("'grainType' must contain a valid typename.");
}
return
(new PlacementResult
{
Activation = ActivationId.NewId(),
Silo = silo,
PlacementStrategy = placement,
GrainType = grainType
});
}
public static PlacementResult SpecifyCreation(
SiloAddress silo,
ActivationId activationId,
PlacementStrategy placement)
{
if (silo == null)
{
throw new ArgumentNullException(nameof(silo));
}
if (activationId == null)
{
throw new ArgumentNullException(nameof(activationId));
}
if (placement == null)
{
throw new ArgumentNullException(nameof(placement));
}
return(new PlacementResult
{
Activation = activationId,
Silo = silo,
PlacementStrategy = placement
});
}
internal void GetTypeInfo(int typeCode, out string grainClass, out PlacementStrategy placement, out MultiClusterRegistrationStrategy activationStrategy, string genericArguments = null)
{
if (!ClusterGrainInterfaceMap.TryGetTypeInfo(typeCode, out grainClass, out placement, out activationStrategy, genericArguments))
{
throw new OrleansException(String.Format("Unexpected: Cannot find an implementation class for grain interface {0}", typeCode));
}
}
internal GrainClassData(int grainTypeCode, string grainClass, GrainInterfaceData interfaceData, PlacementStrategy placement)
{
GrainTypeCode = grainTypeCode;
GrainClass = grainClass;
this.interfaceData = interfaceData;
genericClassNames = new Dictionary <string, string>(); // TODO: initialize only for generic classes
placementStrategy = placement ?? PlacementStrategy.GetDefault();
}
internal static void InitDefaultGrainStrategies()
{
RandomPlacement = Orleans.Runtime.RandomPlacement.Singleton;
PreferLocalPlacement = Orleans.Runtime.PreferLocalPlacement.Singleton;
ActivationCountBasedPlacement = Orleans.Runtime.ActivationCountBasedPlacement.Singleton;
}
internal GrainClassData(int grainTypeCode, string grainClass, bool isGeneric, GrainInterfaceMap.GrainInterfaceData interfaceData, PlacementStrategy placement, MultiClusterRegistrationStrategy registrationStrategy)
{
GrainTypeCode = grainTypeCode;
GrainClass = grainClass;
this.isGeneric = isGeneric;
this.interfaceData = interfaceData;
genericClassNames = new Dictionary <string, string>(); // TODO: initialize only for generic classes
placementStrategy = placement;
this.registrationStrategy = registrationStrategy;
}
public GrainTypeManager(bool localTestMode, SiloAssemblyLoader loader, DefaultPlacementStrategy defaultPlacementStrategy, SerializationManager serializationManager, MultiClusterRegistrationStrategyManager multiClusterRegistrationStrategyManager)
{
this.defaultPlacementStrategy = defaultPlacementStrategy.PlacementStrategy;
this.loader = loader;
this.serializationManager = serializationManager;
this.multiClusterRegistrationStrategyManager = multiClusterRegistrationStrategyManager;
grainInterfaceMap = new GrainInterfaceMap(localTestMode, this.defaultPlacementStrategy);
ClusterGrainInterfaceMap = grainInterfaceMap;
grainInterfaceMapsBySilo = new Dictionary <SiloAddress, GrainInterfaceMap>();
}
internal void AddEntry(int interfaceId, Type iface, int grainTypeCode, string grainInterface, string grainClass, string assembly,
PlacementStrategy placement, bool primaryImplementation = false)
{
lock (this)
{
GrainInterfaceData grainInterfaceData;
if (table.ContainsKey(interfaceId))
{
grainInterfaceData = table[interfaceId];
}
else
{
grainInterfaceData = new GrainInterfaceData(interfaceId, iface, grainInterface);
table[interfaceId] = grainInterfaceData;
if (iface.IsGenericType)
{
iface = iface.GetGenericTypeDefinition();
}
var key = iface.AssemblyQualifiedName;
typeToInterfaceData[key] = grainInterfaceData;
}
var implementation = new GrainClassData(grainTypeCode, grainClass, grainInterfaceData, placement);
if (!implementationIndex.ContainsKey(grainTypeCode))
{
implementationIndex.Add(grainTypeCode, implementation);
}
grainInterfaceData.AddImplementation(implementation, primaryImplementation);
if (primaryImplementation)
{
primaryImplementations[grainInterface] = grainClass;
}
else
{
if (!primaryImplementations.ContainsKey(grainInterface))
{
primaryImplementations.Add(grainInterface, grainClass);
}
}
if (localTestMode)
{
if (!loadedGrainAsemblies.Contains(assembly))
{
loadedGrainAsemblies.Add(assembly);
}
}
}
}
public GrainInterfaceMap(PlacementStrategy defaultPlacementStrategy)
{
table = new Dictionary <int, GrainInterfaceData>();
typeToInterfaceData = new Dictionary <string, GrainInterfaceData>();
primaryImplementations = new Dictionary <string, string>();
implementationIndex = new Dictionary <int, GrainClassData>();
placementStrategiesIndex = new Dictionary <int, PlacementStrategy>();
directoriesIndex = new Dictionary <int, string>();
unordered = new HashSet <int>();
this.defaultPlacementStrategy = defaultPlacementStrategy;
}
public GrainTypeManager(ILocalSiloDetails siloDetails, SiloAssemblyLoader loader, DefaultPlacementStrategy defaultPlacementStrategy, SerializationManager serializationManager, MultiClusterRegistrationStrategyManager multiClusterRegistrationStrategyManager)
{
var localTestMode = siloDetails.SiloAddress.Endpoint.Address.Equals(IPAddress.Loopback);
this.defaultPlacementStrategy = defaultPlacementStrategy.PlacementStrategy;
this.loader = loader;
this.serializationManager = serializationManager;
this.multiClusterRegistrationStrategyManager = multiClusterRegistrationStrategyManager;
grainInterfaceMap = new GrainInterfaceMap(localTestMode, this.defaultPlacementStrategy);
ClusterGrainInterfaceMap = grainInterfaceMap;
grainInterfaceMapsBySilo = new Dictionary <SiloAddress, GrainInterfaceMap>();
}
public ActivationData(
ActivationAddress addr,
PlacementStrategy placedUsing,
IActivationCollector collector,
TimeSpan ageLimit,
IOptions <SiloMessagingOptions> messagingOptions,
TimeSpan maxWarningRequestProcessingTime,
TimeSpan maxRequestProcessingTime,
ILoggerFactory loggerFactory,
IServiceProvider applicationServices,
IGrainRuntime grainRuntime,
GrainReferenceActivator referenceActivator,
GrainTypeComponents sharedComponents,
ActivationMessageScheduler messageScheduler)
{
if (null == addr)
{
throw new ArgumentNullException(nameof(addr));
}
if (null == placedUsing)
{
throw new ArgumentNullException(nameof(placedUsing));
}
if (null == collector)
{
throw new ArgumentNullException(nameof(collector));
}
_receiveMessageInScheduler = state => this.ReceiveMessageInScheduler(state);
_shared = sharedComponents;
_messageScheduler = messageScheduler;
logger = loggerFactory.CreateLogger <ActivationData>();
this.lifecycle = new GrainLifecycle(loggerFactory.CreateLogger <LifecycleSubject>());
this.maxRequestProcessingTime = maxRequestProcessingTime;
this.maxWarningRequestProcessingTime = maxWarningRequestProcessingTime;
this.messagingOptions = messagingOptions.Value;
ResetKeepAliveRequest();
Address = addr;
State = ActivationState.Create;
PlacedUsing = placedUsing;
if (!this.GrainId.IsSystemTarget())
{
this.collector = collector;
}
CollectionAgeLimit = ageLimit;
this.GrainReference = referenceActivator.CreateReference(addr.Grain, default);
this.serviceScope = applicationServices.CreateScope();
this.Runtime = grainRuntime;
}
#pragma warning disable 612,618
internal static PlacementStrategy GetPlacementStrategy(Type grainClass, PlacementStrategy defaultPlacement)
{
PlacementStrategy placement;
if (GetPlacementStrategy <PlacementAttribute>(
grainClass,
a => a.PlacementStrategy,
out placement))
{
return(placement);
}
return(defaultPlacement);
}
public GrainInterfaceMap(bool localTestMode, PlacementStrategy defaultPlacementStrategy)
{
table = new Dictionary <int, GrainInterfaceData>();
typeToInterfaceData = new Dictionary <string, GrainInterfaceData>();
primaryImplementations = new Dictionary <string, string>();
implementationIndex = new Dictionary <int, GrainClassData>();
unordered = new HashSet <int>();
this.localTestMode = localTestMode;
this.defaultPlacementStrategy = defaultPlacementStrategy;
if (localTestMode) // if we are running in test mode, we'll build a list of loaded grain assemblies to help with troubleshooting deployment issue
{
loadedGrainAsemblies = new HashSet <string>();
}
}
public GrainTypeManager(bool localTestMode, SiloAssemblyLoader loader, DefaultPlacementStrategy defaultPlacementStrategy)
{
this.defaultPlacementStrategy = defaultPlacementStrategy.PlacementStrategy;
this.loader = loader;
grainInterfaceMap = new GrainInterfaceMap(localTestMode, this.defaultPlacementStrategy);
lock (lockable)
{
if (Instance != null)
{
throw new InvalidOperationException("An attempt to create a second insance of GrainTypeManager.");
}
Instance = this;
}
}
internal void AddEntry(int interfaceId, Type iface, int grainTypeCode, string grainInterface, string grainClass, string assembly,
bool isGenericGrainClass, PlacementStrategy placement, MultiClusterRegistrationStrategy registrationStrategy, bool primaryImplementation = false)
{
lock (this)
{
GrainInterfaceData grainInterfaceData;
if (table.ContainsKey(interfaceId))
{
grainInterfaceData = table[interfaceId];
}
else
{
grainInterfaceData = new GrainInterfaceData(interfaceId, iface, grainInterface);
table[interfaceId] = grainInterfaceData;
var interfaceTypeKey = GetTypeKey(iface, isGenericGrainClass);
typeToInterfaceData[interfaceTypeKey] = grainInterfaceData;
}
var implementation = new GrainClassData(grainTypeCode, grainClass, isGenericGrainClass, grainInterfaceData, placement, registrationStrategy);
if (!implementationIndex.ContainsKey(grainTypeCode))
{
implementationIndex.Add(grainTypeCode, implementation);
}
grainInterfaceData.AddImplementation(implementation, primaryImplementation);
if (primaryImplementation)
{
primaryImplementations[grainInterface] = grainClass;
}
else
{
if (!primaryImplementations.ContainsKey(grainInterface))
{
primaryImplementations.Add(grainInterface, grainClass);
}
}
if (localTestMode)
{
if (!loadedGrainAsemblies.Contains(assembly))
{
loadedGrainAsemblies.Add(assembly);
}
}
}
}
internal void AddEntry(Type iface, Type grain, PlacementStrategy placement, MultiClusterRegistrationStrategy registrationStrategy, bool primaryImplementation)
{
lock (this)
{
var grainTypeInfo = grain.GetTypeInfo();
var grainName = TypeUtils.GetFullName(grainTypeInfo);
var isGenericGrainClass = grainTypeInfo.ContainsGenericParameters;
var grainTypeCode = GrainInterfaceUtils.GetGrainClassTypeCode(grain);
var grainInterfaceData = GetOrAddGrainInterfaceData(iface, isGenericGrainClass);
var implementation = new GrainClassData(grainTypeCode, grainName, isGenericGrainClass);
if (!implementationIndex.ContainsKey(grainTypeCode))
{
implementationIndex.Add(grainTypeCode, implementation);
}
if (!placementStrategiesIndex.ContainsKey(grainTypeCode))
{
placementStrategiesIndex.Add(grainTypeCode, placement);
}
if (!registrationStrategiesIndex.ContainsKey(grainTypeCode))
{
registrationStrategiesIndex.Add(grainTypeCode, registrationStrategy);
}
grainInterfaceData.AddImplementation(implementation, primaryImplementation);
if (primaryImplementation)
{
primaryImplementations[grainInterfaceData.GrainInterface] = grainName;
}
else
{
if (!primaryImplementations.ContainsKey(grainInterfaceData.GrainInterface))
{
primaryImplementations.Add(grainInterfaceData.GrainInterface, grainName);
}
}
if (localTestMode)
{
var assembly = grainTypeInfo.Assembly.CodeBase;
if (!loadedGrainAsemblies.Contains(assembly))
{
loadedGrainAsemblies.Add(assembly);
}
}
}
}
internal bool TryGetTypeInfo(int typeCode, out string grainClass, out PlacementStrategy placement, string genericArguments = null)
{
lock (this)
{
grainClass = null;
placement = this.defaultPlacementStrategy;
if (!implementationIndex.TryGetValue(typeCode, out var implementation))
{
return(false);
}
grainClass = implementation.GetClassName(genericArguments);
placement = placementStrategiesIndex[typeCode];
return(true);
}
}
public ActivationData(
ActivationAddress addr,
string genericArguments,
PlacementStrategy placedUsing,
IMultiClusterRegistrationStrategy registrationStrategy,
IActivationCollector collector,
TimeSpan ageLimit,
IOptions <SiloMessagingOptions> messagingOptions,
TimeSpan maxWarningRequestProcessingTime,
TimeSpan maxRequestProcessingTime,
IRuntimeClient runtimeClient,
ILoggerFactory loggerFactory)
{
if (null == addr)
{
throw new ArgumentNullException(nameof(addr));
}
if (null == placedUsing)
{
throw new ArgumentNullException(nameof(placedUsing));
}
if (null == collector)
{
throw new ArgumentNullException(nameof(collector));
}
logger = loggerFactory.CreateLogger <ActivationData>();
this.lifecycle = new GrainLifecycle(loggerFactory.CreateLogger <LifecycleSubject>());
this.maxRequestProcessingTime = maxRequestProcessingTime;
this.maxWarningRequestProcessingTime = maxWarningRequestProcessingTime;
this.messagingOptions = messagingOptions.Value;
ResetKeepAliveRequest();
Address = addr;
State = ActivationState.Create;
PlacedUsing = placedUsing;
RegistrationStrategy = registrationStrategy;
if (!Grain.IsSystemTarget)
{
this.collector = collector;
}
CollectionAgeLimit = ageLimit;
GrainReference = GrainReference.FromGrainId(addr.Grain, runtimeClient.GrainReferenceRuntime, genericArguments, Grain.IsSystemTarget ? addr.Silo : null);
this.SchedulingContext = new SchedulingContext(this);
}
public GrainTypeManager(bool localTestMode, SiloAssemblyLoader loader, DefaultPlacementStrategy defaultPlacementStrategy, SerializationManager serializationManager)
{
this.defaultPlacementStrategy = defaultPlacementStrategy.PlacementStrategy;
this.loader = loader;
this.serializationManager = serializationManager;
grainInterfaceMap = new GrainInterfaceMap(localTestMode, this.defaultPlacementStrategy);
ClusterGrainInterfaceMap = grainInterfaceMap;
grainInterfaceMapsBySilo = new Dictionary <SiloAddress, GrainInterfaceMap>();
lock (lockable)
{
if (Instance != null)
{
throw new InvalidOperationException("An attempt to create a second insance of GrainTypeManager.");
}
Instance = this;
}
}
internal bool TryGetTypeInfo(int typeCode, out string grainClass, out PlacementStrategy placement, string genericArguments = null)
{
lock (this)
{
grainClass = null;
placement = null;
if (!implementationIndex.ContainsKey(typeCode))
{
return(false);
}
var implementation = implementationIndex[typeCode];
grainClass = implementation.GetClassName(genericArguments);
placement = implementation.PlacementStrategy;
return(true);
}
}
public GrainTypeManager(SiloInitializationParameters silo, SiloAssemblyLoader loader, DefaultPlacementStrategy defaultPlacementStrategy)
{
var localTestMode = silo.SiloAddress.Endpoint.Address.Equals(IPAddress.Loopback);
this.defaultPlacementStrategy = defaultPlacementStrategy.PlacementStrategy;
this.loader = loader;
grainInterfaceMap = new GrainInterfaceMap(localTestMode, this.defaultPlacementStrategy);
ClusterGrainInterfaceMap = grainInterfaceMap;
grainInterfaceMapsBySilo = new Dictionary <SiloAddress, GrainInterfaceMap>();
lock (lockable)
{
if (Instance != null)
{
throw new InvalidOperationException("An attempt to create a second insance of GrainTypeManager.");
}
Instance = this;
}
}
public ActivationData(
ActivationAddress addr,
string genericArguments,
PlacementStrategy placedUsing,
IMultiClusterRegistrationStrategy registrationStrategy,
IActivationCollector collector,
TimeSpan ageLimit,
NodeConfiguration nodeConfiguration,
TimeSpan maxWarningRequestProcessingTime,
TimeSpan maxRequestProcessingTime,
IRuntimeClient runtimeClient)
{
if (null == addr)
{
throw new ArgumentNullException(nameof(addr));
}
if (null == placedUsing)
{
throw new ArgumentNullException(nameof(placedUsing));
}
if (null == collector)
{
throw new ArgumentNullException(nameof(collector));
}
logger = LogManager.GetLogger("ActivationData", LoggerType.Runtime);
this.lifecycle = new GrainLifecycle(logger);
this.maxRequestProcessingTime = maxRequestProcessingTime;
this.maxWarningRequestProcessingTime = maxWarningRequestProcessingTime;
this.nodeConfiguration = nodeConfiguration;
ResetKeepAliveRequest();
Address = addr;
State = ActivationState.Create;
PlacedUsing = placedUsing;
RegistrationStrategy = registrationStrategy;
if (!Grain.IsSystemTarget && !Constants.IsSystemGrain(Grain))
{
this.collector = collector;
}
CollectionAgeLimit = ageLimit;
GrainReference = GrainReference.FromGrainId(addr.Grain, runtimeClient.GrainReferenceRuntime, genericArguments, Grain.IsSystemTarget ? addr.Silo : null);
this.SchedulingContext = new SchedulingContext(this);
}
public ActivationData(
ActivationAddress addr,
string genericArguments,
PlacementStrategy placedUsing,
MultiClusterRegistrationStrategy registrationStrategy,
IActivationCollector collector,
TimeSpan ageLimit,
NodeConfiguration nodeConfiguration,
TimeSpan maxRequestProcessingTime)
{
if (null == addr)
{
throw new ArgumentNullException("addr");
}
if (null == placedUsing)
{
throw new ArgumentNullException("placedUsing");
}
if (null == collector)
{
throw new ArgumentNullException("collector");
}
logger = LogManager.GetLogger("ActivationData", LoggerType.Runtime);
this.maxRequestProcessingTime = maxRequestProcessingTime;
this.nodeConfiguration = nodeConfiguration;
ResetKeepAliveRequest();
Address = addr;
State = ActivationState.Create;
PlacedUsing = placedUsing;
RegistrationStrategy = registrationStrategy;
if (!Grain.IsSystemTarget && !Constants.IsSystemGrain(Grain))
{
this.collector = collector;
}
CollectionAgeLimit = ageLimit;
GrainReference = GrainReference.FromGrainId(addr.Grain, genericArguments, Grain.IsSystemTarget ? addr.Silo : null);
}
#pragma warning disable 612,618
internal static PlacementStrategy GetPlacementStrategy(Type grainClass)
{
PlacementStrategy placement;
if (GetPlacementStrategy <StatelessWorkerAttribute>(
grainClass,
_ => GrainStrategy.StatelessWorkerPlacement,
out placement))
{
return(placement);
}
if (GetPlacementStrategy <PlacementAttribute>(
grainClass,
a => a.PlacementStrategy,
out placement))
{
return(placement);
}
return(PlacementStrategy.GetDefault());
}
