Gatling login example and showing how to pull out the HTTP authorization header into a variable

login_test.scala

package test

import scala.concurrent.duration._

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import io.gatling.jdbc.Predef._

class LoginTest extends Simulation {

  val sessionHeaders = Map("Authorization" -> "Bearer ${authToken}",
                           "Content-Type" -> "application/json")

	val httpProtocol = http
		.baseURL("http://xx.xx.xx.xx:3000")
		
	val scn = scenario("login_test")
		// LogIn
		.exec(http("login")
			.post("/api/login")
			.formParam("organization_id", "4666")
			.formParam("email", "jdoe@example.com")
			.formParam("password", "put_password_here")
      .check(jsonPath("$..token").exists.saveAs("authToken"))
      )
    .exec(http("get_alerts")
      .get("/api/alerts")
      .headers(sessionHeaders)
      )
    .exec(http("create_widget")
      .post("/api/widgets")
      .headers(sessionHeaders)
      .body(StringBody("""{"description":"This is just a sample description.","name":"Junk"}"""))
      .check(jsonPath("$..id").exists.saveAs("newWidgetId"))
      )

	setUp(scn.inject(atOnceUsers(1))).protocols(httpProtocol)
}