Capture details from http request and response in jmeter - jmeter

Question

I am setting up a jmeter test plan for http requests and I want to create a table capturing some details from http request and response. I read http request from a file using CSV Data Set Config. My request and response formats are as follows
Http Request Format: {"TYPE":"<type>", "PAYLOAD": [<Array of data>]}
Http Response Format: {"RESPONSE":[<Array of data>]}
Things I want to capture for each request, response are TYPE from HTTP Request, Array Size of RESPONSE (or Array size of PAYLOAD) and Time Taken.
The jmeter version I am using is v5.2.1. Any inputs on how can I set this up?
Edit: My HTTP request is a POST request. I am looking to capture details from Request Body.

Answer 1

If you don't mind using JMeter Plugins you can:
Declare the variables from the CSV file as Sample Variables
Extract the number of matches from the response using JSON Extractor configured like:
Name of created variables: responsarray
JSON Path expressions: $.RESPONSE.*
Match Nr.: -1
the variable value you need to declare in the Sample Variables will be responsearray_matchNr
The above Sample Variables can be saved into a file using Flexible File Writer
If you cannot use the plugin you still can achieve the same using JSR223 Listener and the following Groovy code:
def result = new File('result.txt')
def request = new groovy.json.JsonSlurper().parseText(sampler.getArguments().getArgument(0).getValue())
def requestType = request.TYPE
def requestArray = request.PAYLOAD.size()
def response = new groovy.json.JsonSlurper().parse(prev.getResponseData())
def responseArray = response.RESPONSE.size()
def timeTaken = prev.getTime()
result << requestType << ',' << requestArray << ',' << responseArray << ',' << timeTaken << System.getProperty('line.separator')