// Implements #553
private TImplementation CreateInstance(Func <TImplementation> instanceCreator)
{
var isCurrentThread = new ThreadLocal <bool> {
Value = true
};
// Create a listener that can spot when an injected stream is iterated during construction.
Action <ServiceCreatedListenerArgs> listener = args =>
{
// Only handle when an inner registration hasn't handled this yet.
if (!args.Handled)
{
// Only handle when the call originates from the same thread, as calls from different
// threads mean the listener is not triggered from this specific instanceCreator.
if (isCurrentThread.Value)
{
args.Handled = true;
var matchingRelationship = this.FindMatchingCollectionRelationship(args.Producer);
var additionalInformation = StringResources.CollectionUsedDuringConstruction(
typeof(TImplementation),
args.Producer,
matchingRelationship);
// At this point, an injected ContainerControlledCollection<T> has notified the
// listener about the creation of one of its elements. This has happened during
// the construction of this (Singleton) instance, which might cause Lifestyle
// Mismatches. That's why this is added as a known relationship. This way
// diagnostics can verify the relationship.
this.AddRelationship(
new KnownRelationship(
implementationType: typeof(TImplementation),
lifestyle: this.Lifestyle,
consumer: matchingRelationship?.Consumer ?? InjectionConsumerInfo.Root,
dependency: args.Producer,
additionalInformation: additionalInformation));
}
}
};
try
{
ControlledCollectionHelper.AddServiceCreatedListener(listener);
return(instanceCreator());
}
finally
{
ControlledCollectionHelper.RemoveServiceCreatedListener(listener);
isCurrentThread.Dispose();
}
}
private Action <ServiceCreatedListenerArgs> CreateCollectionUsedDuringConstructionListener(
ThreadLocal <bool> isCurrentThread)
{
return(args =>
{
// Only handle when an inner registration hasn't handled this yet.
if (!args.Handled)
{
// Only handle when the call originates from the same thread, as calls from different
// threads mean the listener is not triggered from this specific instanceCreator.
if (isCurrentThread.Value)
{
args.Handled = true;
var matchingRelationship = this.FindMatchingCollectionRelationship(args.Producer);
var additionalInformation = StringResources.CollectionUsedDuringConstruction(
this.ImplementationType,
args.Producer,
matchingRelationship);
// At this point, an injected ContainerControlledCollection<T> has notified the
// listener about the creation of one of its elements. This has happened during
// the construction of this (Singleton) instance, which might cause Lifestyle
// Mismatches. That's why this is added as a known relationship. This way
// diagnostics can verify the relationship.
var relationship = new KnownRelationship(
implementationType: this.ImplementationType,
lifestyle: this.Lifestyle,
consumer: matchingRelationship?.Consumer ?? InjectionConsumerInfo.Root,
dependency: args.Producer);
relationship.AddAdditionalInformation(
DiagnosticType.LifestyleMismatch, additionalInformation);
this.AddRelationship(relationship);
}
}
});
}