How to use Data Proxy for custom datasource locally

I wonder if I can ask for help as I’m trying to use Grafana Data Proxy to make some authenticated calls, but failing miserable to do so.

I can provide the whole source code, but generally, I’m following a new Grafana 7 data source tutorial.
I’ve created a new plugin using:

npx @grafana/toolkit plugin:create my-plugin

My plugin.json:

  "routes": [
      "path": "testdatasourcecall",
      "method": "GET",
      "url": ""

My intention is to call
just to confirm that it’s working.

In my DataSource.ts:

import { getBackendSrv } from '@grafana/runtime';

export class DataSource extends DataSourceApi<MyQuery, MyDataSourceOptions> {
  // ...
  async query(options: DataQueryRequest<MyQuery>): Promise<DataQueryResponse> {
    // ...
    const res = await getBackendSrv().datasourceRequest({
      url: "testdatasourcecall/todos/1",
      method: "GET",

  // ...

Now what I’m getting is HTLM response with:

headers: {X-Grafana-Org-Id: 1}
method: "GET"
retry: 0
url: "testdatasourcecall/todos/1"
__proto__: Object
data: {HTLM BODY, pasted below}
headers: Headers {}
ok: true
redirected: false
status: 200
statusText: "OK"
type: "basic"
url: "http://localhost:3000/testdatasourcecall/todos/1"


      <div class="preloader__text preloader__text--fail">
          <strong>If you're seeing this Grafana has failed to load its application files</strong>
          <br />
          <br />
          1. This could be caused by your reverse proxy settings.<br /><br />
          2. If you host grafana under subpath make sure your grafana.ini root_url setting includes subpath<br />
          <br />
          3. If you have a local dev build make sure you build frontend using: yarn start, yarn start:hot, or yarn
          build<br />
          <br />
          4. Sometimes restarting grafana-server can help<br />

I’m running grafana locally:

docker run -d -p 3000:3000 -e GF_DATAPROXY_LOGGING=true -e GF_LOG_LEVEL=debug -v C:\DevOps\grafana\grafana-plugins:/var/lib/grafana/plugins --name=grafana grafana/grafana:7.0.2

I’ve been trying to read source code for SDK and grafana, but can’t figure out what’s wrong.
My questions:

  • does this feature work locally? maybe I need to set some additional config?
  • am I using the code correctly?
  • is there any way to debug this issue better? I’ve tried GF_DATAPROXY_LOGGING but I can’t see any useful logs to be honest…

I’ll really appreciate some help, can provide more code if needed. If you have some working examples I’d be also grateful! Thanks

did you find a soulution?