public Subscription UpdateDeadLetterPolicy(string projectId, string topicId, string subscriptionId, string deadLetterTopicId)
{
SubscriberServiceApiClient subscriber = SubscriberServiceApiClient.Create();
// This is an existing topic that the subscription with dead letter policy is attached to.
TopicName topicName = TopicName.FromProjectTopic(projectId, topicId);
// This is an existing subscription with a dead letter policy.
SubscriptionName subscriptionName = SubscriptionName.FromProjectSubscription(projectId, subscriptionId);
// This is an existing dead letter topic that the subscription with dead letter policy forwards
// dead letter messages to.
var deadLetterTopic = TopicName.FromProjectTopic(projectId, deadLetterTopicId).ToString();
// Construct the subscription with the dead letter policy you expect to have after the update.
// Here, values in the required fields (name, topic) help identify the subscription.
var subscription = new Subscription
{
SubscriptionName = subscriptionName,
TopicAsTopicName = topicName,
DeadLetterPolicy = new DeadLetterPolicy
{
DeadLetterTopic = deadLetterTopic,
MaxDeliveryAttempts = 20,
}
};
var request = new UpdateSubscriptionRequest
{
Subscription = subscription,
// Construct a field mask to indicate which field to update in the subscription.
UpdateMask = new FieldMask { Paths = { "dead_letter_policy" } }
};
var updatedSubscription = subscriber.UpdateSubscription(request);
return updatedSubscription;
}
public Subscription RemoveDeadLetterPolicy(string projectId, string topicId, string subscriptionId)
{
SubscriberServiceApiClient subscriber = SubscriberServiceApiClient.Create();
// This is an existing topic that the subscription with dead letter policy is attached to.
TopicName topicName = TopicName.FromProjectTopic(projectId, topicId);
// This is an existing subscription with dead letter policy.
SubscriptionName subscriptionName = SubscriptionName.FromProjectSubscription(projectId, subscriptionId);
var subscription = new Subscription()
{
SubscriptionName = subscriptionName,
TopicAsTopicName = topicName,
DeadLetterPolicy = null
};
var request = new UpdateSubscriptionRequest
{
Subscription = subscription,
UpdateMask = new FieldMask {
Paths = { "dead_letter_policy" }
}
};
var updatedSubscription = subscriber.UpdateSubscription(request);
return(updatedSubscription);
}