How can I use session variable inside jsonpath ?

[dg dg10]

Hi, 

I need use session variable inside jsonpath but it's giving me type -error. Looks like I need to tell jsonpath this is session variable, though I tried with "session =>" syntax but no luck. 

Can someone please help me in this ?. Also , how can I convert my "session variable" to a variable, which can be used directly in jsonpath  ?.

Code : 

import scala.concurrent.duration._

import io.gatling.core.Predef._

import io.gatling.http.Predef._

import io.gatling.jdbc.Predef._

class RecordedSimulation extends Simulation {

val httpProtocol = http

.baseURL("http://api.test.local")

.inferHtmlResources()

.acceptHeader("application/json, text/javascript, */*; q=0.01")

.acceptEncodingHeader("gzip, deflate")

.acceptLanguageHeader("en-US,en;q=0.5")

.userAgentHeader("Mozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0")

    val uri1 = "http://api.test.local/api/v1/services"

val count = new java.util.concurrent.atomic.AtomicInteger(1)

var test = "\"platform-qa-test-service-1-0-0-test-1\""

val scn = scenario("Test")

   .exec(session => session.set("s_count", count.getAndIncrement))

.exec(session => session.set("qaservice", "platform-qa-test-service-1-0-0-test-" + session("s_count").as[String]))

.exec(http("GetService")

.get(uri1)

.header("Content-Type", "application/json")

.check(status is 200)

.check(jsonPath("$..[?(@.Permalink== " +test+ ")].ID").saveAs("loadID"))      // With test variable it's working

    

setUp(scn.inject(rampUsers(2) over(20 seconds))).protocols(httpProtocol)

} 

---------------------------------------------------------------------------

When I tried with "test" variable then it's working but with session("qaservice")  it's giving me error.

Thanks in advance!

[dg dg10]

I forgot to mention that I can solved this by another way i.e using "("$..[?(@.Permalink== "+"\"" +test+count.getAndIncrement+"\""+ ")].ID")" but  I would like understand expert solution on above problem. 

[dg dg10]

Any pointer on above will be helpful.  

On Wednesday, July 19, 2017 at 7:07:22 PM UTC+5:30, dg dg10 wrote:

[Barry Perez]

Hi,

Check the documentation for Session API:

http://gatling.io/docs/current/session/session_api/

Specifically:

Warning

session("foo") doesn’t return the value, but a wrapper.

Cheers,

Barry

[dg dg10]

Thanks Barry for the reply. I tried  "check(jsonPath("$..[?(@.Permalink=="+"\"" + session("qaservice").asOption[String] +"\""+ ")].ID").saveAs("reloadid"))) " earlier as well  but it's giving me error "not found: value session" . Looks like, JsonPath not identified the session variable. Also tried with "session =>" but still getting error. Does I missed something or any other way around to pass session variable inside jsonpath ? . 

[Barry Perez]

Hi,

OK - this might help:

http://gatling.io/docs/current/session/expression_el/#expression-language

Barry

[Vu Nguyen]

My comment is likely a shot in the dark (since I haven't implemented this):

This is my understanding of jsonPath from http://gatling.io/docs/current/http/http_check/#http-response-body:

jsonPath(expression) where expression can be a plain String, a String using Gatling EL or an Expression[String]

I believe you can try this:

jsonPath(session => session("qaservice").validate[String].map(value => s"""$..[?(@.Permalink=="${value}")].ID"""))

Hope that works!

[dg dg10]

Thanks Vu and Barry. 

@Vu, yes you're right, I tried with ".check(jsonPath( session => "$..[?(@.Permalink=="+ session("qaservice").as[String] + ")].ID").saveAs("ID")))" and it's working.  Thanks again.