Why won't gatling post an auth token from a POST return body to a GET header - scala

Question

I tried all the suggestions I found from other examples on this site and I still cannot get my Gatling test to pass the authentication token from a POST to the following GETs. The token is taken from the return body of the POST and passed in as a header to the GET
Initially the login was in BaseSimulationTest but I put it in GetDealsTests for troubleshooting
Steps I have tried:
I added this:
//println(" Token value" + session("accessToken").as[String])
And I was able to see that I got a string back in the terminal that seemed to indicate accessToken was a null value
I tried declaring var accessValue and var accessToken both in the method and globally. No change.
I tried checking the header value on the GET after passing the token in but .check(header.is(expected = ${accessToken})) seems to just error out
I have put the login POST and GET in the same method, different methods etc
I have tried passing in the username and password from .formParam instead of in the body of the request statement
Do I need to do the headers as a map? Is this a scope thing? Do I need to declare variables differently? The tests are running with an "expected 200 but received 401" type result. I think the POST doesn't even see the token being passed to it.
class GetDealsTests extends BaseSimulationTest {
def logIn2() = {
exec(http("Log in")
.post(getUrl() + "login")
.header("Content-Type", "application/json")
.body(ElFileBody("bodies/Login.json")).asJson
.check(status.is(200))
.check(jsonPath("$.access_token").saveAs("accessToken")))
exec(
session=>{
accessValue = session("accessToken").as[String]
session
})
}
def getAllDeals() = {
exec(_.set("accessToken", accessValue))
.exec(
http("Get all deals")
.get("deals/all")
.header("Authorization", "Bearer" + "${accessToken}")
.check(status.is(200))
)
}
val scnGetAllDeals = scenario("Get All Deals endpoint tests")
.forever() {
exec(logIn2())
exec(getAllDeals())
}
setUp(
scnGetAllDeals.inject(
nothingFor(5 seconds),
atOnceUsers(users))
).protocols(httpConf.inferHtmlResources())
.maxDuration(FiniteDuration(duration.toLong, MINUTES))
}
I looked at the following: Gatling won't save access token, Gatling Scala:Unable to send auth token to the method using session variable, Gatling - Setting Authorization header as part of request and don't see what I'm doing wrong

Answer 1

Lots of things:
Both logIn2 and getAllDeals are missing dots to properly chain the different method calls. As an example, here's what your logIn2 is actually doing (properly formatting helps):
def logIn2() = {
val discardedResult = exec(http("Log in")
.post(getUrl() + "login")
.header("Content-Type", "application/json")
.body(ElFileBody("bodies/Login.json")).asJson
.check(status.is(200))
.check(jsonPath("$.access_token").saveAs("accessToken")))
return exec(
session => {
accessValue = session("accessToken").as[String]
session
})
}
You probably shouldn't be using a global var. You don't need it and such construct is not threadsafe, so under load, virtual users will be updating and reading from this reference concurrently and result will be a mess.
You're missing a space in your Authorization header, between Bearer and the actual value.
asJson is merely a shortcut for .header("Content-Type", "application/json"), so you setting this header twice.
class GetDealsTests extends BaseSimulationTest {
val logIn2 =
exec(http("Log in")
.post(getUrl() + "login")
.body(ElFileBody("bodies/Login.json")).asJson
.check(status.is(200))
.check(jsonPath("$.access_token").saveAs("accessToken")))
val getAllDeals =
exec(
http("Get all deals")
.get("deals/all")
.header("Authorization", "Bearer ${accessToken}")
.check(status.is(200))
)
val scnGetAllDeals = scenario("Get All Deals endpoint tests")
.forever {
exec(logIn2)
.exec(getAllDeals)
}
setUp(
scnGetAllDeals.inject(
nothingFor(5 seconds),
atOnceUsers(users))
).protocols(httpConf.inferHtmlResources())
.maxDuration(FiniteDuration(duration.toLong, MINUTES))
}