JSON in Webhook notification

Configuration
1

I’ve setup a StatPing which has webhook notification functionality. I can successfully trigger a webhook in HA but finding it hard to use the json from the payload in my messages. Here is the payload and my code:

Payload:

{
  "id": "{{.Service.Id}}",
  "online": true
}

Automation:

- id: '1593508230036'
  alias: Statping Test
  description: ''
  trigger:
  - platform: webhook
    webhook_id: ID12345
  condition: []
  action:
  - data_template:
      message: '{{ trigger.json.id }} is {{ trigger.json.online}}'
      title: Test
    service: persistent_notification.create

Error in HA:

Error executing script. Unexpected error for call_service at pos 1: Error rendering data template: UndefinedError: 'dict object' has no attribute 'json'

I’ver followed the templating guide which states the use of trigger.json and using data_template but still get the above error.

Any ideas?

2

The payload has to be posted as JSON. It could also be Form-data. That depends on how the data is pushed. Make sure it’s the correct format.

3

From the information within Statping it does show as JSON.

image
image828×1792 159 KB

4

Now I’m getting the following error:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/webhook/__init__.py", line 97, in async_handle_webhook
    response = await webhook["handler"](hass, webhook_id, request)
  File "/usr/src/homeassistant/homeassistant/components/automation/webhook.py", line 30, in _handle_webhook
    result["json"] = await request.json()
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_request.py", line 584, in json
    return loads(body)
  File "/usr/local/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/usr/local/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/local/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
5

Ok so it looks like whatever Statping is sending its not JSON formatted as I’ve tested in Node-Red (thanks to @Villhellm) and the following flow works:

[{"id":"d3666d4a.9dd568","type":"inject","z":"67140efa.120ab","name":"","topic":"","payload":"{ \"service\": \"Test\",\"status\": \"Online\" }","payloadType":"json","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":450,"y":2020,"wires":[["e2513fc1.ea6d5"]]},{"id":"e2513fc1.ea6d5","type":"http request","z":"67140efa.120ab","name":"webhook","method":"POST","ret":"txt","paytoqs":false,"url":"http://192.168.1.12:8123/api/webhook/ID12345","tls":"","persist":false,"proxy":"","authType":"","x":640,"y":2020,"wires":[[]]}]

I’ll reach out to Statping and see if they can shed some light on the issue.

6

Looking at Statping logs its showing that the correct JSON was sent so not sure what’s going on:

e[36mINFOe[0m[243745] sending body: '{   "service": "Another Test","status": "Online" }' to http://192.168.1.12:8123/api/webhook/ID12345 as a POST request 
e[36mINFOe[0m[243745] /api/notifier/webhook/test (POST) | IP: 192.168.1.12:32813  e[36mload_micro_secondse[0m=7762 e[36mmethode[0m=POST e[36mtypee[0m=handlers e[36murle[0m=/api/notifier/webhook/test