public override Task <ListTopicSubscriptionsResponse> ListTopicSubscriptions(Empty request, ServerCallContext context)
{
var result = new ListTopicSubscriptionsResponse();
result.Subscriptions.Add(new TopicSubscription()
{
PubsubName = "pubsub",
Topic = "exampletopic"
});
return(Task.FromResult(result));
}
/// <summary>
/// implement ListTopicSubscriptions to register deposit and withdraw subscriber
/// </summary>
/// <param name="request"></param>
/// <param name="context"></param>
/// <returns></returns>
public override Task <ListTopicSubscriptionsResponse> ListTopicSubscriptions(Empty request, ServerCallContext context)
{
var result = new ListTopicSubscriptionsResponse();
//result.Subscriptions.Add(new TopicSubscription
//{
// PubsubName = "pubsub",
// Topic = "orders"
//});
//result.Subscriptions.Add(new TopicSubscription
//{
// PubsubName = "pubsub",
// Topic = "withdraw"
//});
return(Task.FromResult(result));
}
// FYI Here where ServiceB tells Dapr which Pubsub subscriptions it can handle.
public override Task <ListTopicSubscriptionsResponse> ListTopicSubscriptions(Empty request, ServerCallContext context)
{
var result = new ListTopicSubscriptionsResponse();
try
{
TopicSubscription subscr;
subscr = new TopicSubscription
{
PubsubName = NamesOfQueuesNPubSubs.PubSubAzServiceBusComponent,
Topic = NamesOfQueuesNPubSubs.ServiceADemoEvent1Topic
};
result.Subscriptions.Add(subscr);
// For display in a running demo.
Console.WriteLine($" ** ServiceB: Subscribed to Topic={subscr.Topic} for PubsubName={subscr.PubsubName}");
// For Dapr default Redis pubsub component. Also needs event processing code in OnTopicEvent() below.
subscr = new TopicSubscription()
{
PubsubName = NamesOfQueuesNPubSubs.PubSubDefaultDaprComponent,
Topic = NamesOfQueuesNPubSubs.ServiceADemoEvent1Topic
};
result.Subscriptions.Add(subscr);
// For display in a running demo.
Console.WriteLine($" ** ServiceB: Subscribed to Topic={subscr.Topic} for PubsubName={subscr.PubsubName}");
}
catch (Exception ex)
{
m_Logger.LogError($"** ServiceB.ListTopicSubscriptions() threw exception ex={ex}");
throw;
}
// TODO If required, add subscription for NamesOfQueuesNPubSubs.ServiceADemoEvents2Topic
return(Task.FromResult(result));
}
protected override void ProcessRecord()
{
if (Subscription != null)
{
Subscription = Subscription.Select(item => GetProjectPrefixForSubscription(item, Project)).ToArray();
}
// Handles the case where user wants to list all subscriptions in a particular topic.
// In this case, we will have to make a call to get the name of all the subscriptions in that topic
// before calling get request on each subscription.
if (Topic != null)
{
Topic = GetProjectPrefixForTopic(Topic, Project);
ProjectsResource.TopicsResource.SubscriptionsResource.ListRequest listRequest =
Service.Projects.Topics.Subscriptions.List(Topic);
do
{
ListTopicSubscriptionsResponse response = null;
try
{
response = listRequest.Execute();
}
catch (GoogleApiException ex) when(ex.HttpStatusCode == HttpStatusCode.NotFound)
{
WriteResourceMissingError(
exceptionMessage: $"Topic '{Topic}' does not exist in project '{Project}'.",
errorId: "TopicNotFound",
targetObject: Topic);
}
if (response?.Subscriptions != null)
{
// If user gives us a list of subscriptions to search for, we have to make sure that
// those subscriptions belong to the topic.
if (Subscription != null)
{
IEnumerable <string> selectedSubscriptions = response.Subscriptions
.Where(sub => Subscription.Contains(sub, System.StringComparer.OrdinalIgnoreCase));
GetSubscriptions(selectedSubscriptions);
}
else
{
GetSubscriptions(response.Subscriptions);
}
}
listRequest.PageToken = response.NextPageToken;
}while (!Stopping && listRequest.PageToken != null);
return;
}
// If no topic is given, then we are left with 2 cases:
// 1. User gives us a list of subscriptions: we just find those subscriptions and returned.
// 2. User does not give us any subscriptions: we just return all subscriptions in the project.
if (Subscription != null && Subscription.Length > 0)
{
GetSubscriptions(Subscription.Select(item => GetProjectPrefixForSubscription(item, Project)));
}
else
{
ProjectsResource.SubscriptionsResource.ListRequest listRequest =
Service.Projects.Subscriptions.List($"projects/{Project}");
do
{
ListSubscriptionsResponse response = listRequest.Execute();
if (response.Subscriptions != null)
{
WriteObject(response.Subscriptions, true);
}
listRequest.PageToken = response.NextPageToken;
}while (!Stopping && listRequest.PageToken != null);
}
}
