public override void OnUnsubscribing(ISubscribeResult subscription)
{
if (!_byeItem.Equals(default(T)))
{
subscription.WriteAsync(_byeItem, CancellationToken.None);
}
}
public override void OnSubscribed(ISubscribeResult subscription)
{
if (!_welcomeItem.Equals(default(T)))
{
subscription.WriteAsync(_welcomeItem, CancellationToken.None);
}
}
public static SubscriptionResult MapSourceToResponseEventAsync(
IExecutorContext context,
ISubscribeResult subscribeResult,
GraphQLOperationDefinition subscription,
Dictionary <string, object> coercedVariableValues,
Func <Exception, Error> formatError, CancellationToken cancellationToken)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (subscribeResult == null)
{
throw new ArgumentNullException(nameof(subscribeResult));
}
if (subscription == null)
{
throw new ArgumentNullException(nameof(subscription));
}
if (coercedVariableValues == null)
{
throw new ArgumentNullException(nameof(coercedVariableValues));
}
if (formatError == null)
{
throw new ArgumentNullException(nameof(formatError));
}
var responseStream = Channel.CreateUnbounded <ExecutionResult>();
var reader = subscribeResult.Reader;
// execute event
var _ = reader.TransformAndLinkTo(responseStream, item => ExecuteSubscriptionEventAsync(
context,
subscription,
coercedVariableValues,
item,
formatError));
return(new SubscriptionResult(responseStream));
}
public virtual void OnUnsubscribing(ISubscribeResult subscription)
{
}
public virtual void OnSubscribed(ISubscribeResult subscription)
{
}
public override void OnSubscribed(ISubscribeResult subscription)
{
subscription.WriteAsync("value", CancellationToken.None)
.AsTask()
.Wait();
}
