Trying to get gatling working

.github/workflows/gatling.yml

@@ -0,0 +1,23 @@
+name: Gatling Load Test
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up JDK
+      uses: actions/setup-java@v4
+      with:
+        distribution: 'zulu'
+        java-version: '21'
+
+    - name: Load Test
+      run: ./mvnw gatling:test

pom.xml

@@ -23,6 +23,8 @@
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<start-class>jasper.JasperApplication</start-class>
 		<argLine>-Djava.security.egd=file:/dev/./urandom -Xmx256m</argLine>
+		<gatling-maven-plugin.version>4.6.0</gatling-maven-plugin.version>
+		<gatling.version>3.9.5</gatling.version>
 		<jhipster-framework.version>7.7.0</jhipster-framework.version>
 		<lombok.version>1.18.30</lombok.version>
 		<testcontainers.version>1.19.7</testcontainers.version>
@@ -363,6 +365,12 @@
 			<artifactId>postgresql</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>io.gatling.highcharts</groupId>
+			<artifactId>gatling-charts-highcharts</artifactId>
+			<version>${gatling.version}</version>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>com.tngtech.archunit</groupId>
 			<artifactId>archunit-junit5-api</artifactId>
@@ -430,6 +438,28 @@
 					</includes>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>io.gatling</groupId>
+				<artifactId>gatling-maven-plugin</artifactId>
+			</plugin>
 		</plugins>
+		<pluginManagement>
+			<plugins>
+				<plugin>
+					<groupId>io.gatling</groupId>
+					<artifactId>gatling-maven-plugin</artifactId>
+					<version>${gatling-maven-plugin.version}</version>
+					<configuration>
+						<runMultipleSimulations>true</runMultipleSimulations>
+						<configFolder>${project.basedir}/src/test/gatling/conf</configFolder>
+						<resourcesFolder>${project.basedir}/src/test/resources/gatling</resourcesFolder>
+						<simulationsFolder>${project.basedir}src/test/java/simulations/computerdatabase</simulationsFolder>
+						<includes>
+							<include>simulations.computerdatabase.ComputerDatabaseSimulation</include>
+						</includes>
+					</configuration>
+				</plugin>
+			</plugins>
+		</pluginManagement>
 	</build>
 </project>

src/test/java/simulations/computerdatabase/ComputerDatabaseSimulation.java

@@ -0,0 +1,89 @@
+package simulations.computerdatabase;
+
+import static io.gatling.javaapi.core.CoreDsl.*;
+import static io.gatling.javaapi.http.HttpDsl.*;
+
+import io.gatling.javaapi.core.*;
+import io.gatling.javaapi.http.*;
+
+import java.util.concurrent.ThreadLocalRandom;
+
+/**
+ * This sample is based on our official tutorials:
+ * <ul>
+ *   <li><a href="https://gatling.io/docs/gatling/tutorials/quickstart">Gatling quickstart tutorial</a>
+ *   <li><a href="https://gatling.io/docs/gatling/tutorials/advanced">Gatling advanced tutorial</a>
+ * </ul>
+ */
+public class ComputerDatabaseSimulation extends Simulation {
+
+    HttpProtocolBuilder httpProtocol =
+            http.baseUrl("https://computer-database.gatling.io")
+                    .acceptHeader("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
+                    .acceptLanguageHeader("en-US,en;q=0.5")
+                    .acceptEncodingHeader("gzip, deflate")
+                    .userAgentHeader(
+                            "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0");
+
+    FeederBuilder<String> feeder = csv("search.csv").random();
+
+    ChainBuilder search =
+            // Execute actions sequentially
+            exec(
+                    http("Home").get("/"),
+                    pause(1),
+                    feed(feeder),
+                    http("Search")
+                            .get("/computers?f=#{searchCriterion}")
+                            .check(css("a:contains('#{searchComputerName}')", "href").saveAs("computerUrl")),
+                    pause(1),
+                    http("Select").get("#{computerUrl}").check(status().is(200)),
+                    pause(1)
+            );
+
+    // Repeat is a loop resolved at RUNTIME
+    ChainBuilder browse =
+            // Note how we force the counter name, so we can reuse it
+            repeat(4, "i").on(
+                    http("Page #{i}").get("/computers?p=#{i}"),
+                    pause(1)
+            );
+
+    // Note we should be using a feeder here
+    // Let's demonstrate how we can retry: let's make the request fail randomly and retry a given
+    // number of times
+    ChainBuilder edit =
+            // Let's try at max 2 times
+            tryMax(2)
+                    .on(
+                            http("Form").get("/computers/new"),
+                            pause(1),
+                            http("Post")
+                                    .post("/computers")
+                                    .formParam("name", "Beautiful Computer")
+                                    .formParam("introduced", "2012-05-30")
+                                    .formParam("discontinued", "")
+                                    .formParam("company", "37")
+                                    .check(
+                                            status()
+                                                    .is(
+                                                            // We do a check on a condition that's been customized with
+                                                            // a lambda. It will be evaluated every time a user executes
+                                                            // the request.
+                                                            session -> 200 + ThreadLocalRandom.current().nextInt(2)
+                                                    )
+                                    )
+                    )
+                    // If the chain didn't finally succeed, have the user exit the whole scenario
+                    .exitHereIfFailed();
+
+    ScenarioBuilder users = scenario("Users").exec(search, browse);
+    ScenarioBuilder admins = scenario("Admins").exec(search, browse, edit);
+
+    {
+        setUp(
+                users.injectOpen(rampUsers(10).during(10)),
+                admins.injectOpen(rampUsers(2).during(10))
+        ).protocols(httpProtocol);
+    }
+}

src/test/resources/gatling/search.csv

@@ -0,0 +1,3 @@
+searchCriterion,searchComputerName
+Macbook,MacBook Pro
+eee,ASUS Eee PC 1005PE