CODEWITHSUNDEEP
node.jsapiexpressgoogle-cloud-platformgoogle-cloud-api-gateway
Anthony Fasano
Anthony Fasano

Reputation: 71

Google cloud function always receive / from API Gateway

Let's setup the basics: I'm using Google Api Gateway with differents backends like Google Cloud Function.

First, I was parsing the req paramters with a switch statement on a header containing the original request url. (Very messy but working)

So I decided to use an express app instead for my cloud function.

But here is the thing: my functions always receive / from the gateway and generate raging errors like CANNOT GET / when my path is https://mygateway/api/subservice/action

So my question is: can I change the handling of the express app to parse my header containing the original request url and not the default path url?

Here is a part of my config:

{
  "swagger": "2.0",
  "info": {
    "title": "my API",
    "version": "1.0.0"
  },
  "basePath": "/api",
  "host": "mygateway.[REGION].gateway.dev",
  "schemes": [
    "https"
  ],
  "paths": {
    "/subservice/action": {
      "get": {
        "x-google-backend": {
          "address": "https://[REGION]-[ProjectID].cloudfunctions.net/[mycloudfunction]"
        },
        "security": [
          {
            "jwt_security": []
          }
        ],

Upvotes: 0

Views: 622

Answers (1)

Anthony Fasano
Anthony Fasano

Reputation: 71

I found on this question something similar that guided my search of the response possible duplicate here

According Google's explanation of path translation when we use x-google-backend, the backend will only receive the basic request. we have to define with the parameter path_translation the behaviour we expect. In my case, I want to receive the same path so i use APPEND_PATH_TO_ADDRESS

Upvotes: 2

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