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I built few cloud functions like this one:
const addRoom = functions.https.onCall((data, context) => {
It works perfectly but I wanted to change region to europe-west. I followed this stackoverflow: firebase deploy to custom region (eu-central1)
const addRoom = functions.region('europe-west1').https.onCall((data, context) => {
It looks working fine for all functions (triggers) except onCall functions. I got this error when calling addRoom function on client side :
firebase.functions().httpsCallable("addRoom")(data)
Access to fetch at 'https://us-central1-myproject.cloudfunctions.net/addRoom' from origin 'http://localhost:4200/new-room' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.
At this moment I use default region for onCall functions but is there a way to correct that or is that an error from firebase ?
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You can select a region for your function during deployment. If you are using the Google Cloud CLI, you can specify the region by using the --region flag: gcloud functions deploy FUNCTION_NAME --region= REGION ... Where REGION is one of the regions listed above.
onRequest creates a standard API endpoint, and you'll use whatever methods your client-side code normally uses to make. HTTP requests to interact with them. onCall creates a callable. Once you get used to them, onCall is less effort to write, but you don't have all the flexibility you might be used to.
By default each Cloud Run container instance can receive up to 80 requests at the same time; you can increase this to a maximum of 1000.
On the client side, you should specify the desired region at initialization and call the function as follows:
var functions = firebase.app().functions('europe-west1');
....
functions.httpsCallable("addRoom")(data)
See https://firebase.google.com/docs/functions/locations#http_and_client_callable_functions
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