Strange behavior with GAE service using Pubsub

[Anton Bacaj]

I have a service that runs on google app engine, it is supposed to subscribe to a topic and do some work.

The behavior is very strange, I see the service running from the logs but it does not consume any messages.

When I run the service on my local machine it does consume messages correctly.

Does GAE not support pubsub subscriber services?

[Kenworth (Google Cloud Platform)]

GAE supports PubSub subscriber services. Does it happen on both push and pull subscriptions?

There are calls that gives you some metrics to have a better idea on what is happening, like: 

subscription/num_undelivered_messages

to get the number of unacknowledged messages or

subscription/num_outstanding_messages

to get the number of outstanding push messages.

The full list of calls are listed here. 

[Anton Bacaj]

It is using the default pull configuration. I am using the google-cloud pubsub nodejs client.

What I mean by not consuming, my consume callback function does not get triggered on Google app engine, but locally it does.

On Sep 10, 2017 3:37 PM, "'Kenworth (Google Cloud Platform)' via Google App Engine" <google-a...@googlegroups.com> wrote:

subscription/num_undelivered_messages

1- Does it happen on both push and pull subscriptions?

2- What do you mean consume any messages?

3- What is the result if you 

You can call  to get the number of unacknowledged messages or "suscription/num_outstanding_messages" to get the number of outstanding push messages. The full list of metrics are listed here. This may help you debug the strange behavior.

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[Kenworth (Google Cloud Platform)]

Do they show up on the metrics when you run "pull_ack_message_operation_count", "pull_ack_request_count", "pull_message_operation_count", etc?