ESPv2 with Google Cloud Functions upstream request timeout

For anyone else having this issue, in the openapi-functions.yaml under the x-google-backend you should had the attribut deadline and set it to whatever value in seconds you want.

Here is the hidden documentation https://cloud.google.com/endpoints/docs/openapi/openapi-extensions#deadline

Issue related: https://github.com/GoogleCloudPlatform/esp-v2/issues/4

Depending on the documentation you used to secure the endpoints of your Cloud Function’s with ESPv2, this should be possible. If you are using Cloud Run to host your ESPv2, a 504 error is sent when a request exceeds its request timeout limit. The request timeout limit is a setting that specifies the time within which a response must be returned before sending a 504 response. You can change this value by going in your “Cloud Run” tab, selecting your ESPv2 service, selecting “Edit & Deploy new Revision”, scrolling down to the capacity section and setting the time in milliseconds. This is some documentation that could prove helpful when working with the topics discussed.