Enhance simulation to:

1. GET sample instances
2. check response time for sample API interactions are less than 100ms

sample-webapp/src/main/resources/simulations/OutstandingRequestLimitingFilterSimulation.scala

@@ -8,6 +8,7 @@ class OutstandingRequestLimitingFilterSimulation extends Simulation {
   def apply = {
 
     val urlBase = "http://localhost:8080"
+    val NUM_SAMPLES = 100
 
     val httpConf = httpConfig.baseURL(urlBase)
       .requestInfoExtractor((request: Request) => {
@@ -30,7 +31,7 @@ class OutstandingRequestLimitingFilterSimulation extends Simulation {
       "Host" -> "localhost:8080")
 
     val setupScenario = scenario("Setup")
-      .repeat(10) {
+      .repeat(NUM_SAMPLES) {
       chain
         .exec(
         http("examples - create")
@@ -40,27 +41,57 @@ class OutstandingRequestLimitingFilterSimulation extends Simulation {
       )
     }
 
+    val randomIntegerFeeder = new Feeder {
+
+      import scala.util.Random
+
+      private val RNG = new Random
+
+      // always return true as this feeder can be polled infinitely
+      override def hasNext = true
+
+      override def next: Map[String, String] = {
+        Map("randomInt" -> (RNG.nextInt(NUM_SAMPLES) + 1).toString)
+      }
+    }
+
+    val expectedStatuses: List[Int] = List(200, 503)
     val overloadScenario = scenario("Request overload")
       .loop(
       chain
         .exec(
         http("homepage")
           .get("/sample-webapp/")
           .headers(headers_standard)
-          .check(status.in(List(200, 503))))
-        /* .pause(0, 50, MILLISECONDS) */
-        .pauseExp(100 milliseconds)
+          .check(status.in(expectedStatuses)))
 
         .exec(
         http("examples - list")
           .get("/sample-webapp/examples/")
           .headers(headers_json)
-          .check(status.in(List(200, 503))))
-    ).during(1, MINUTES)
+          .check(status.in(expectedStatuses))
+          .check(responseTimeInMillis.lessThan(100)))
+
+        .feed(randomIntegerFeeder)
+
+        .loop(
+        chain
+          .exec(
+          http("examples - get")
+            .get("/sample-webapp/examples/${randomInt}")
+            .headers(headers_json)
+            .check(status.in(expectedStatuses))
+            .check(responseTimeInMillis.lessThan(100))
+          )
+        ).times(3)
+
+        .pauseExp(100 milliseconds)
+
+    ).during(60, SECONDS)
 
     List(
-      setupScenario.configure.users(1).ramp(1).protocolConfig(httpConf)
-      , overloadScenario.configure.users(100).ramp(10).protocolConfig(httpConf)
+      setupScenario.configure.users(1).protocolConfig(httpConf)
+      , overloadScenario.configure.users(100).ramp(10).protocolConfig(httpConf).delay(10, SECONDS)
     )
   }
 }