Monitor a Json file at a url for a specific term or value

Configuration
1

Hey guys,

I run a virtual radar server which gets data from a number of ads-b feeders around my state, I want to be able to get TTS notifications when particular flights or aircraft enter range of my network if receivers.

I can get a Json data feed of the currently visible aircraft, but the exact location of the string I want to be notified about may change depending on a number of factors.

Is there any way to search the file for any mention of a specific string ?

I think node red might be my best chance ?

Eg I want a tts notification when a flight with route HND to SYD appears, or a callsign VH-OJA, Etc.

Similar to what this does, but in home assistant.

And here’s the Json:

https://radar.rei.moe/virtualradar/AircraftList.json

Note it may be empty if you’re checking it in USA daytime… Depends how busy the air is here in Sydney.

Thank you!

2

Pull in all the data like this (RESTful - Home Assistant):

rest:
  - resource: https://radar.rei.moe/virtualradar/AircraftList.json
    sensor:
      - name: "Aircraft list"
        value_template: "{{ value_json['stm'] }}"
        json_attributes:
          - acList

image
image890×588 28 KB

Then use template sensors to pick out specifics. For example, a template binary sensor that you can set up in the UI with a state template of:

{{ 'VH-OJA' in state_attr('sensor.aircraft_list', 'acList')|map(attribute='Reg')|list }}

will go true if there is an item listed with Reg (I assume you meant that rather than callsign?) of VH-OJA.

image
image847×325 27 KB

You can then trigger a TTS automation from that binary sensor.

Not used NR before (nor do I intend to), but I’d be surprised if it’s any easier than what I’ve proposed and demonstrated.