Cloud function external pub sub topic

[Navirash]

Hello,

I would like to trigger a cloud function when a message is publish in a pub/sub topic. However, the pub/sub topic is located on another project different from where the cloud function will be deployed.

What solution can I consider please ? 

Navirash 

[DamianS]

Hello @Navirash  ,Welcome on Google Cloud Community.

Under the project, where you have pub/sub topic, you must create PUSH subscription and provide Cloud Function URL as Endpoint URL. 
https://cloud.google.com/pubsub/docs/create-push-subscription

Stackoverflow topic about kind similar question:
https://stackoverflow.com/questions/51093792/can-i-use-google-cloud-pub-sub-across-different-google-...

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cheers,
DamianS
LinkedIn medium.com Cloudskillsboost

[ihssanS]

Hello @DamianS 

The solution is not working when the Ingress parameter of the Cloud Run function is set to Internal. Do you have any other suggestions for a solution?

Best regards,

Ihssan