Select random value from the response json with a validation - jmeter

Question

When I send a request to an api end point, the following json is coming in my response.
{
"entities": {
"practitioners": {
"f1d26a4b-c489-493d-bccf-7b9c8b92ecac": {
"fullAvatarUrl": null,
"id": "f1d26a4b-c489-493d-bccf-7b9c8b92ecac",
"accountId": "ef757dba-f0d5-4464-a338-4a810e02bf47",
"pmsId": "1",
"type": "Dentist",
"isActive": true,
"isHidden": false
},
"ee87642d-c9a6-4a9d-b99a-a96501f27a7b": {
"fullAvatarUrl": null,
"id": "ee87642d-c9a6-4a9d-b99a-a96501f27a7b",
"accountId": "ef757dba-f0d5-4464-a338-4a810e02bf47",
"pmsId": "2",
"type": "Hygienist",
"isActive": true,
"isHidden": false
},
"d0aeb9eb-f267-45ad-8cdf-eada1155c274": {
"fullAvatarUrl": null,
"id": "d0aeb9eb-f267-45ad-8cdf-eada1155c274",
"accountId": "ef757dba-f0d5-4464-a338-4a810e02bf47",
"pmsId": "3",
"type": "Dentist",
"isActive": true,
"isHidden": false
},
"2f641e8e-c5d6-4fdf-8fbe-f99fe837f441": {
"fullAvatarUrl": null,
"id": "2f641e8e-c5d6-4fdf-8fbe-f99fe837f441",
"accountId": "ef757dba-f0d5-4464-a338-4a810e02bf47",
"pmsId": "4",
"type": "Hygienist",
"isActive": true,
"isHidden": false
}
}
},
"result": [
"f1d26a4b-c489-493d-bccf-7b9c8b92ecac",
"ee87642d-c9a6-4a9d-b99a-a96501f27a7b",
"d0aeb9eb-f267-45ad-8cdf-eada1155c274",
"2f641e8e-c5d6-4fdf-8fbe-f99fe837f441"
]
}
problem statement: I want to select any one from the above 4 random value(want to select the practitioners id and which are sitting at the first element under practitioners) with a validation that isActive should be true and isHidden should be false.
I have tried using the JSON extractor using the expression $.entities.practitioners and match number 0
But it is not selecting the any one rather it select all.

Answer 1

Add JSR223 PostProcessor as a child of the request which returns this JSON
Put the following code into "Script" area:
def json = new groovy.json.JsonSlurper().parse(prev.getResponseData())
def ids = []
json.entities.practitioners.each { practitioner ->
if (practitioner.value.isActive && !practitioner.value.isHidden) {
ids.add(practitioner.key)
}
}
def randomId = ids.get(org.apache.commons.lang3.RandomUtils.nextInt(0, ids.size()))
vars.put('randomId', randomId)
That's it, you should be able to access the random ID as ${randomId} where required.
More information:
Apache Groovy - Parsing and producing JSON
Apache Groovy - Why and How You Should Use It

Answer 2

I guess this approach can help you,
add a JSR223 PostProcessor to your http request and after that please add the following groovy script to the PostProcessor
Note: this is only to select the random PractitionersId for the validation just use the similar logic.
import groovy.json.*
def response = prev.responseDataAsString ;
def json = new JsonSlurper().parseText(response) ;
def sizeResultPractitioners = json.result.size();
Random rnd = new Random()
def randomResultPractitioners = rnd.nextInt(sizeResultPractitioners);
log.info("---------->"+randomResultPractitioners);
log.info("---------->"+json.result[randomResultPractitioners]);