Extraction is not working when requests are part of resource

Gatling (Open-Source)
1

Hi,

I get “No attribute named ‘trackCode’ is defined” when my request is part of the resource group. As shown in the below example.

Is there a way to handle such situation like storing the ‘trackCode’ in session parameter ?

.exec(http("01_Main_Request_Page")
                        .post("/services/app/event/uiClick/json")
                        .headers(headers_0)
                        .body(StringBody("{}"))
                        .resources(http(**"02_Sub_Request**")
                                      .get("/services/app/cme/settings/track/json")
                                      .check(jmesPath("data.trackCode").saveAs("trackCode")),
                                               
                                   http("03_Sub_Request")
                                      .get("/services/app/cme/tracks/json?trackCode=#{trackCode}")
                                      .check(jmesPath("data[0].survey.id").saveAs("surveyId"))
                                         
                                )
                )

Extraction works fine if I take out the sub-requests and place them under new .exec call.

Thanks,
Ashish

2

Any reason why you want to use resources? resources helps emulate parallel fetches. Now if you think about that, parallel fetches that are done subsequent to your 01_Main_Request_Page should not depend on each other. If they do depend, as in your case 02_Sub_Request and 03_Sub_Request, then they cannot be parallel :slight_smile: . If 03_Sub_Request depends on 02_Sub_Request then it is by nature a sequential call.

I think you might be missing a .asJson in 01_Main_Request_Page call

Maybe you intend to do this instead

.exec(http(**"02_Sub_Request**")
       .get("/services/app/cme/settings/track/json")
       .check(jmesPath("data.trackCode").saveAs("trackCode"))
.resources(http("01_Main_Request_Page")
             .post("/services/app/event/uiClick/json")
             .headers(headers_0)
             .body(StringBody("{}"))
             .asJson)
.exec(http("03_Sub_Request")
       .get("/services/app/cme/tracks/json?trackCode=#{trackCode}")
       .check(jmesPath("data[0].survey.id").saveAs("surveyId")))
2 Likes
3

Thanks @shoaib42 . Right, extraction is working in the case when requests are executed sequentially.

To your question- Why I am using resources?. Actually, this is how the recorded HAR file was converted into a Gatling script. But I got what you are saying. Thanks for the explanation.