Connect Firebase Hosting to cloud function in "europe-west1"

Programming
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1

I’m trying to set up a “friendly” domain name for my API, hosted on Google Cloud Functions in the europe-west1 region. I have updated the firebase.json file according to Googles documentation, but I get an error 403 when accessing the API via the “friendly” domain name. The following rewrites are included in my firebase.json file:

  "hosting": {
    "public": "public",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "/api/**",
        "function": "api"
      },
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }

I’m getting the following error message:

Error: Forbidden
Your client does not have permission to get URL /api/api/ical.ics from this server.

I’m likely overlooking something basic, but I’m not sure what. Can someone help me troubleshoot?

2

The issue is caused by the rewrites in the firebase.json file. Specifically, the "source": "/api/**" rewrite is causing the API to redirect to /api/api/ical.ics, resulting in the 403 error. To fix this, remove the extra /api from the rewrite source, like so:

"rewrites": [
  {
    "source": "/**",
    "function": "api"
  },
  {
    "source": "**",
    "destination": "/index.html"
  }
]

This should allow the API to be accessed via the “friendly” domain name without encountering the 403 error.