public SessionContract(TalkCompositionHost source, ISession session, object[] localServiceInstances, object[] remoteServiceInstances)
{
this.Session = session;
this.RemoteServices = remoteServiceInstances;
this.LocalServices = localServiceInstances;
this.source = source;
}
internal void CheckOutParamsSubscriptions(object instance, object[] outParams, TalkCompositionHost host, Type targetInterface)
{
if (outParams != null)
{
// todo: subscribe action
foreach (var outParam in outParams)
{
if (outParam is Delegate)
{
Delegate sessionDelegate = (Delegate)outParam;
var method = sessionDelegate.Method;
string methodName = method.Name;
var parameters = method.GetParameters();
Type serviceDelegateType = null;
foreach (var p in parameters)
{
if (p.ParameterType != typeof(int) && p.ParameterType != typeof(string))
{
serviceDelegateType = p.ParameterType;
break;
}
}
if (methodName.EndsWith("Created", false, CultureInfo.InvariantCulture))
{
SessionChangeSubscription subscription;
if (!sessionCreatedSubscriptions.TryGetValue(serviceDelegateType, out subscription))
{
subscription = new SessionChangeSubscription(serviceDelegateType);
sessionCreatedSubscriptions.Add(serviceDelegateType, subscription);
if (!CheckIfSubscriptionInterfaceIsRegistered(serviceDelegateType))
{
throw new InvalidOperationException($"Cannot subscribe session events for {serviceDelegateType.FullName}! No registration was found in the assigned container hosts. Are you missing a RegisterRemoteService<{serviceDelegateType.Name}>()?");
}
}
if (host != null && host.IsSessionInstance(targetInterface, out ISession session))
{
subscription.AddDelegate(sessionDelegate, parameters, session);
}
else
{
subscription.AddDelegate(sessionDelegate, parameters, null);
}
}
else if (methodName.EndsWith("Terminated", false, CultureInfo.InvariantCulture))
{
SessionChangeSubscription subscription;
if (!sessionTerminatedSubscriptions.TryGetValue(serviceDelegateType, out subscription))
{
subscription = new SessionChangeSubscription(serviceDelegateType);
sessionTerminatedSubscriptions.Add(serviceDelegateType, subscription);
if (!CheckIfSubscriptionInterfaceIsRegistered(serviceDelegateType))
{
throw new InvalidOperationException($"Cannot subscribe session events for {serviceDelegateType.FullName}! No registration was found in the assigned container hosts. Are you missing a RegisterRemoteService<{serviceDelegateType.Name}>()?");
}
}
if (host != null && host.IsSessionInstance(targetInterface, out ISession session))
{
subscription.AddDelegate(sessionDelegate, parameters, session);
}
else
{
subscription.AddDelegate(sessionDelegate, parameters, null);
}
}
else
{
throw new NotSupportedException($"The Action subscription method name \"{methodName}\" is not supported! Method name must end either with \"Created\" or \"Terminated\".");
}
}
else
{
throw new InvalidOperationException($"Unexpected out parameter in \"{instance.GetType().FullName}\" constructor! Only delegate types (e.g. Action<IMyService>) are allowed.");
}
}
}
}
internal IEnumerable CollectLocalMultiImports(TalkCompositionHost host, Type type, Type injectTargetType, List <Type> pendingCreateList)
{
// multiple imports
// 1. determine generic target interface type
// 2. create concreate target collection instance
// 3. add one instance of all local implementations
Type genericCollectionInterface = type.GetInterface("IEnumerable`1");
if (type.IsGenericType ||
genericCollectionInterface != null)
{
Type enumerableClassType = null;
Type[] genericTypes = type.GetGenericArguments();
if (genericTypes.Length == 1)
{
Type listType = typeof(List <>);
enumerableClassType = listType.MakeGenericType(genericTypes);
}
else if (genericTypes.Length == 0 &&
genericCollectionInterface != null)
{
genericTypes = genericCollectionInterface.GetGenericArguments();
Type listType = typeof(List <>);
enumerableClassType = listType.MakeGenericType(genericTypes);
}
if (enumerableClassType != null && genericTypes.Length == 1)
{
Type targetInterfaceType = genericTypes[0];
bool isShared = IsMultiShared(targetInterfaceType);
IList targetCollection = null;
if (isShared)
{
targetCollection = GetLocalSharedMultipleInstances(targetInterfaceType);
}
if (targetCollection == null)
{
targetCollection = (IList)TypeService.CreateInstance(enumerableClassType);
// create new instances
HashSet <Type> createdTypes = new HashSet <Type>();
foreach (Type implType in this.FindInterfaceImplementations(targetInterfaceType, injectTargetType))
{
if (!createdTypes.Contains(implType) && injectTargetType != implType)
{
object[] outParams;
ParameterInfo[] outParamsInfo;
object itemInstance;
if (host != null)
{
itemInstance = TypeService.CreateInstance(implType, host.DetermineConstructorImportInstance, pendingCreateList, out outParams, out outParamsInfo);
}
else
{
itemInstance = TypeService.CreateInstance(implType, this.DetermineConstructorImportInstance, pendingCreateList, out outParams, out outParamsInfo);
}
CheckOutParamsSubscriptions(itemInstance, outParams, host, targetInterfaceType);
targetCollection.Add(itemInstance);
RegisterSharedConstructorInstances(targetInterfaceType, itemInstance, outParams, outParamsInfo);
createdTypes.Add(implType);
}
}
if (isShared)
{
if (localSharedMultipleInterfaceInstances == null)
{
localSharedMultipleInterfaceInstances = new Dictionary <Type, IList>();
}
// add to shared dictionary
localSharedMultipleInterfaceInstances.Add(targetInterfaceType, targetCollection);
}
}
if (type.IsArray)
{
Type arrayItemType = type.GetElementType();
Array targetArray = Array.CreateInstance(arrayItemType, targetCollection.Count);
for (int i = 0; i < targetCollection.Count; i++)
{
targetArray.SetValue(targetCollection[i], i);
}
return(targetArray);
}
else
{
return(targetCollection);
}
}
}
return(null);
}
internal bool TryRaiseInMemorySessionCreated(Type serviceType, object serviceInstance, TalkCompositionHost host, IGenericCommunicationService communicationService)
{
SessionChangeSubscription subscr;
if (sessionCreatedSubscriptions.TryGetValue(serviceType, out subscr))
{
if (inMemorySession == null)
{
inMemorySession = new Session(communicationService, 0, "In-Memory Session");
inMemorySessionContract = new SessionContract(host, inMemorySession, new object[0], new object[0]);
}
subscr.Invoke(serviceInstance, inMemorySessionContract, inMemorySession);
return(true);
}
else
{
return(false);
}
}