Stop Sending Requests By Checking the Response Body in JMeter - json

Question

I want to keep calling to a REST API until the Response Body contains a 100 elements.
Here is the example:
request : someurl/get/data
response :
1st API call : (2elements included)
{
"items" : [
{
"name": "abc",
"id" : "ajdiw123"
},
{
"name": "abc",
"id" : "ajdiw123345"
}
]
}
2nd API call : (4 elements)
{
"items" : [
{
"name": "abc",
"id" : "ajdiw123"
},
{
"name": "def",
"id" : "ajdiw145"
},
{
"name": "afc",
"id" : "ajdiw113"
},
{
"name": "bbc",
"id" : "ajdiw199"
}
]
}
like this response body included elements can changed. At some point it will return 100 elements with 100 different ids there. How I can identified that and stop sending the requests to the endpoint using JMeter.

Answer 1

It can be achieved in multiple ways depending on your test plan.
Add a JSON Extractor and a JSR223 Assertion to your request.
JSON Extractor Settings will be like:
JSR223 Assertion code will be like:
String totalIDs = vars.get("id_matchNr");
Integer result = Integer.valueOf(totalIDs);
if (result == 100){
AssertionResult.setFailure(true);
}
After that, just add a Result Status Action Handler to that request so it will stop the execution for the specific thread:

Answer 2

Try this:
Add a post processor in your request. A JSON Extractor to extract any of the unique array attribute say ID. JSON extractor should have a match number field set to -1 and name set as requestid and expression as $..id
Debug sampler
All this should be inside a While Controller which will have a condition
${__jexl3(${requestid_matchNr} != 100)}. "requestid_matchNr" will come from Debug Sampler response.