static proxy with stub data doesnt work with yaml config

[drmaples]

Describe the bug
I am trying to create an endpoint with static/stub data. When I use a yaml config file, the endpoint does not work.

➜  ~  ☞  curl -v http://localhost:8888/health
*   Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 8888 (#0)
> GET /health HTTP/1.1
> Host: localhost:8888
> User-Agent: curl/7.64.1
> Accept: */*
>
< HTTP/1.1 500 Internal Server Error
< X-Krakend: Version 1.1.0
< X-Krakend-Completed: false
< Date: Mon, 09 Mar 2020 01:08:43 GMT
< Content-Length: 0
<
* Connection #0 to host localhost left intact
* Closing connection 0

[GIN] 2020/03/09 - 01:03:06 | 500 |      3.0527ms |      172.17.0.1 | GET      /health
Error #01: Get "http://fake-backend/": dial tcp: lookup fake-backend on 192.168.65.1:53: no such host

However, if I use a json config file it works as expected. I mostly followed the example here: https://www.krakend.io/docs/endpoints/health/

I tried experimenting with output_encoding: string and using a string in data: 'hello there' with no success.

Your configuration file

{
    "version": 2,
    "port": 8888,
    "endpoints": [
        {
            "endpoint": "/health",
            "extra_config": {
                "github.com/devopsfaith/krakend/proxy": {
                    "static": {
                        "data": {
                            "status": "OK"
                        },
                        "strategy": "always"
                    }
                }
            },
            "backend": [
                {
                    "url_pattern": "/",
                    "host": [
                        "http://fake-backend"
                    ]
                }
            ]
        }
    ]
}

version: 2
port: 8888
endpoints:
- endpoint: "/health"
  extra_config:
    github.com/devopsfaith/krakend/proxy:
      static:
        data:
          status: OK
        strategy: always
  backend:
  - url_pattern: "/"
    host:
    - http://fake-backend

Commands used
How did you start the software?

 docker run -p 8888:8888 -v "${PWD}:/etc/krakend/" devopsfaith/krakend run -d -c /etc/krakend/krakend.yaml

Expected behavior
A json config file should work the same as a yaml config file. I should be able to create a static proxy endpoint.

Thanks for your help and thanks for the amazing product, I really enjoy using KrakendD.

[myusri]

It seems like using YAML format is a lot of trouble. I have an issue with extra_config for the krakend-martian module. Config snippet below:

    backend:
      - host:
          - https://api.wit.ai
        url_pattern: "/message"
        extra_config:
          github.com/devopsfaith/krakend/http:
            return_error_details: wit.ai

          github.com/devopsfaith/krakend-martian:
            header.Modifier:
              scope:
                - request
              name: Authorization
              value: Bearer XXXX

Error in the log output:

[XXXXXX] 2020/06/22 - 11:33:09.408 ▶ ERROR {<nil> marshalling the extra config for the martian module} map[github.com/devopsfaith/krakend-martian:map[header.Modifier:map[name:Authorization scope:[request] value:Bearer XXXX]] github.com/devopsfaith/krakend/http:map[return_error_details:wit.ai]]

[kpacha]

yaml support has some caveats with the extra_config sections (as pointed out in this issue).

we do not recommend using YAML with complex configurations because of that and due it's incompatibility with the flexible-config module.

[github-actions]

This issue was marked as resolved a long time ago and now has been automatically locked as there has not been any recent activity after it. You can still open a new issue and reference this link.