How can i validate a json against a template in jq?

Question

I am having a shell script . in my shell script i have a command that returns the following data as a json .

{
  "remoteIds": [
    {
      "remoteId": "[fd00:10:244:1:0:0:0:12]--(http://fd00-10-244-1--12.nspace.pod:8080)",
      "requestsReceived": 1
    }
}

i want to validate the above output with a json template. in my json template i can provide the port, nspace , protocol (http) & requestsReceived . How can i design a json template and validate against the json data . i can use jq and bash script

The following will be a template in my mind

{
  "remoteIds": [
    {
      "remoteId": "[*]--(http://*.nspace.pod:8080)",
      "requestsReceived": 1
    }
}

thank you

Answer 1

If you don't want to tangle with a full-fledged generic schema definition ecosystem and don't mind "rolling your own" validation engine, you might wish to consider the following illustration:

< input.json jq --slurpfile template template.json '
  def validate($template):
    ($template | .remoteIds[0] | keys) as $keys
    | (type == "object") and
      (.remoteIds | type) == "array" and
      all(.remoteIds[]; keys == $keys) and
      all(.remoteIds[].remoteId; 
          test("^\\[.*\\]--[(]http://.*[.]nspace[.]pod:8080[)]$") )
  ;

validate($template[0])
'

This incidentally works with all three of the major jq implementations: the standard C-based implementation; gojq; and jaq.