Is it possible to pass through a backend url endpoint that is relative to that url through an Azure Function Proxy or perhaps api management

Question

As of now, from what I see, the only way to use Azure Function Proxy is to re-route an existing api is to call upon that api directly. For example:

Backend URL

https://gateway-api.com/api/getSomething

Route Template

/api

Proxy URL

https://gateway.azurewebsites.net/api

What I want is to have the Backend URL pass through any endpoint relative to the main endpoint.

Effectively this:

Backend URL

https://gateway-api.com/* or i even tried this https://gateway-api.com/{*restOfPath}

This way, any api's that follow the core domain URL will still work as expected.

Here is a re-write of the example above:

Backend URL 2

https://gateway-api.com/*

Route Template 2

/*

Proxy URL 2

https://gateway.azurewebsites.net/api/getSomething

When I do this I can't get it to work or even reach the debuger to log anything.

Is this possible and if not would this be something Azure API Management would be able to accomplish?

Answer 1

Can you provide your configuration file? this is mine:

Proxies.json:

{
  "$schema": "http://json.schemastore.org/proxies",
  "proxies": {
    "proxy1": {
      "matchCondition": {
        "methods": [ "GET" ],
        "route": "/{test}"
      },
      "backendUri": "http://localhost:7071/abc/Function1"
    }
  }
}

host.json:

{
  "version": "2.0",
  "extensions": {
    "http": {
      "routePrefix": "abc"
    }
  },
  "logging": {
    "applicationInsights": {
      "samplingExcludedTypes": "Request",
      "samplingSettings": {
        "isEnabled": true
      }
    }
  }
}

This is the backend url and proxy of my function:

Both of them works fine.

If you change route template, I think the backend url will not have /api unless you give the /api to routePrefix.

Any way, please show the file about how to configure proxy and route template.