Blazemeter - How to make an asynchronous call in YAML?

Question

So, I have 2 API's, one POST and one GET call. I send some json data in the POST request and it generates an id as response. Then I have to use the id to make a GET request. I am testing for large data, so I need to wait until the id has been generated.

Here is my YAML script-

---
execution:
- concurrency: 30
  ramp-up: 1m
  hold-for: 10m
  scenario: 5K_Export Excel
scenarios:
  5K_Export Excel:
    store-cache: false
    store-cookie: false
    use-dns-cache-mgr: false
    variables:
      calcEngineId: ${calcEngineId}
      url: ${url}
    data-sources:
      # path of .csv files for ${calcEngineId}, ${url} and ${bearerToken}
    requests:
      - label: Post Pivot Data
        url: ${url}/${calcEngineId}/exportPivotDataToExcel
        follow-redirects: true
        method: POST
        headers:
          Content-Type: application/json
          User-Agent: ApacheJMeter
          Authorization: Bearer ${bearerToken1}
        content-encoding: UTF-8
        think-time: 30s
        timeout: 2m
        extract-jsonpath:
          jobId: $.id
        body:
          # body of POST request
      - label: Export To Excel
        url: ${url}/${calcEngineId}/exportPivotDataToExcel/${jobId}
        follow-redirects: true
        method: GET
        headers:
          Content-Type: application/octet-stream
          User-Agent: ApacheJMeter
          Authorization: Bearer ${bearerToken1}
        content-encoding: UTF-8
        think-time: 1m
        timeout: 2m

I am extracting the id and storing it in a variable called jobId through this-

extract-jsonpath:
          jobId: $.id

And then I am using this jobId in the url of the GET request as seen above.

When I run this in blazemeter, the GET call shows Bad Request probably due to jobId not being generated yet while making the GET call.

I tried adding a think-time of 60s in between the POST and GET calls but it didn't work.

- label: Think for 1 Minute
        think-time: 60000

How do I achieve this? Is there any other way to make an async call in YAML?

I would also like to mention that it is working fine when I have a relatively small data in the body of the POST call. The problem arises when the data is large, lets say 10k-15k lines.

Answer 1

In BlazeMeter's Logs Report there should be error.jtl file

It contains request and response data and headers for failing samplers, so you can check what is being send and what is the response.

Additionally you can:

1. Create an Assertion to ensure that your POST request is doing what it supposed to be doing especially when it comes to "large" requests. If it fails - you will be able to see its details in error.jtl file
2. Amend JMeter Test Log configuration so it would save everything, this way you will be able to debug your test.