Gatling vs JMeter vs The Grinder

Issue: BAEL-46

testing-modules/load-testing-comparison/pom.xml

@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>parent-modules</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../../pom.xml</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>load-testing-bakeoff</artifactId>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <encoding>UTF-8</encoding>
+        <scala.version>2.11.12</scala.version> <!--2.11.12 --> <!--2.12.6 -->
+        <gatling.version>2.2.5</gatling.version> <!--2.2.5 --> <!--2.3.1 -->
+        <scala-maven-plugin.version>3.2.2</scala-maven-plugin.version> <!--3.2.2 --> <!--3.3.2 -->
+        <gatling-maven-plugin.version>2.2.1</gatling-maven-plugin.version> <!--2.2.1 --> <!--2.2.4 -->
+        <jmeter.version>5.0</jmeter.version>
+        <grinder.version>3.11</grinder.version>
+        <spring.boot.version>2.0.5.RELEASE</spring.boot.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.gatling</groupId>
+            <artifactId>gatling-app</artifactId>
+            <version>${gatling.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.gatling</groupId>
+            <artifactId>gatling-recorder</artifactId>
+            <version>${gatling.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.gatling.highcharts</groupId>
+            <artifactId>gatling-charts-highcharts</artifactId>
+            <version>${gatling.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-library</artifactId>
+            <version>${scala.version}</version>
+        </dependency>
+        <!--<dependency>-->
+            <!--<groupId>net.sf.grinder</groupId>-->
+            <!--<artifactId>grinder</artifactId>-->
+            <!--<version>${grinder.version}</version>-->
+        <!--</dependency>-->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.9.4</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+            <version>${spring.boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>${spring.boot.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>1.4.197</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.2</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <!--<testSourceDirectory>src/test/scala</testSourceDirectory>-->
+        <!--<pluginManagement>-->
+            <!--<plugins>-->
+                <!--<plugin>-->
+                    <!--<groupId>net.alchim31.maven</groupId>-->
+                    <!--<artifactId>scala-maven-plugin</artifactId>-->
+                    <!--<version>${scala-maven-plugin.version}</version>-->
+                <!--</plugin>-->
+            <!--</plugins>-->
+        <!--</pluginManagement>-->
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <version>2.0.5.RELEASE</version>
+            </plugin>
+            <!--<plugin>-->
+                <!--<groupId>net.alchim31.maven</groupId>-->
+                <!--<artifactId>scala-maven-plugin</artifactId>-->
+                <!--<executions>-->
+                    <!--<execution>-->
+                        <!--<goals>-->
+                            <!--<goal>testCompile</goal>-->
+                        <!--</goals>-->
+                        <!--<configuration>-->
+                            <!--<args>-->
+                                <!--&lt;!&ndash;<arg>-Ybackend:GenBCode</arg> &ndash;&gt;-->
+                                <!--<arg>-Ydelambdafy:method</arg>-->
+                                <!--<arg>-target:jvm-1.8</arg>-->
+                                <!--<arg>-deprecation</arg>-->
+                                <!--<arg>-feature</arg>-->
+                                <!--<arg>-unchecked</arg>-->
+                                <!--<arg>-language:implicitConversions</arg>-->
+                                <!--<arg>-language:postfixOps</arg>-->
+                            <!--</args>-->
+                        <!--</configuration>-->
+                    <!--</execution>-->
+                <!--</executions>-->
+            <!--</plugin>-->
+            <!--<plugin>-->
+                <!--<groupId>io.gatling</groupId>-->
+                <!--<artifactId>gatling-maven-plugin</artifactId>-->
+                <!--<version>${gatling-maven-plugin.version}</version>-->
+                <!--<executions>-->
+                    <!--<execution>-->
+                        <!--<phase>test</phase>-->
+                        <!--<goals>-->
+                            <!--<goal>execute</goal>-->
+                        <!--</goals>-->
+                    <!--</execution>-->
+                <!--</executions>-->
+            <!--</plugin>-->
+        </plugins>
+    </build>
+</project>

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/Application.java

@@ -0,0 +1,12 @@
+package com.baeldung.loadtesting;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/RewardsController.java

@@ -0,0 +1,51 @@
+package com.baeldung.loadtesting;
+
+import com.baeldung.loadtesting.model.CustomerRewardsAccount;
+import com.baeldung.loadtesting.model.Transaction;
+import com.baeldung.loadtesting.repository.CustomerRewardsRepository;
+import com.baeldung.loadtesting.repository.TransactionRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Calendar;
+import java.util.List;
+import java.util.Optional;
+
+@RestController
+public class RewardsController {
+
+    @Autowired
+    private CustomerRewardsRepository customerRewardsRepository;
+
+    @Autowired
+    private TransactionRepository transactionRepository;
+
+    @PostMapping(path="/transactions/add")
+    public @ResponseBody Transaction saveTransactions(@RequestBody Transaction trnsctn){
+        trnsctn.setTransactionDate(Calendar.getInstance().getTime());
+        Transaction result = transactionRepository.save(trnsctn);
+        return result;
+    }
+
+    @GetMapping(path="/transactions/findAll/{rewardId}")
+    public @ResponseBody Iterable<Transaction> getTransactions(@PathVariable Integer rewardId){
+        return transactionRepository.findByCustomerRewardsId(rewardId);
+    }
+
+    @PostMapping(path="/rewards/add")
+    public @ResponseBody CustomerRewardsAccount addRewardsAcount(@RequestBody CustomerRewardsAccount body) {
+        Optional<CustomerRewardsAccount> acct = customerRewardsRepository.findByCustomerId(body.getCustomerId());
+        return !acct.isPresent() ? customerRewardsRepository.save(body) : acct.get();
+    }
+
+    @GetMapping(path="/rewards/find/{customerId}")
+    public @ResponseBody
+    Optional<CustomerRewardsAccount> find(@PathVariable Integer customerId) {
+        return customerRewardsRepository.findByCustomerId(customerId);
+    }
+
+    @GetMapping(path="/rewards/all")
+    public @ResponseBody List<CustomerRewardsAccount> findAll() {
+        return customerRewardsRepository.findAll();
+    }
+}

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/TransactionController.java

@@ -0,0 +1,26 @@
+package com.baeldung.loadtesting;
+
+import com.baeldung.loadtesting.model.Transaction;
+import com.baeldung.loadtesting.repository.TransactionRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@Deprecated
+public class TransactionController {
+
+    @Autowired
+    private TransactionRepository transactionRepository;
+
+    @PostMapping(path="/addTransaction")
+    public @ResponseBody
+    String saveTransactions(@RequestBody Transaction trnsctn){
+        transactionRepository.save(trnsctn);
+        return "Saved Transaction.";
+    }
+
+    @GetMapping(path="/findAll/{rewardId}")
+    public @ResponseBody Iterable<Transaction> getTransactions(@RequestParam Integer id){
+        return transactionRepository.findByCustomerRewardsId(id);
+    }
+}

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/model/CustomerRewardsAccount.java

@@ -0,0 +1,22 @@
+package com.baeldung.loadtesting.model;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+import lombok.Data;
+
+@Entity
+@Data
+public class CustomerRewardsAccount {
+
+    @Id
+    @GeneratedValue(strategy= GenerationType.AUTO)
+    private Integer id;
+    private Integer customerId;
+
+    public Integer getCustomerId(){
+        return this.customerId;
+    }
+}

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/model/Transaction.java

@@ -0,0 +1,30 @@
+package com.baeldung.loadtesting.model;
+
+import lombok.Data;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import java.util.Date;
+import java.util.Calendar;
+
+@Entity
+@Data
+public class Transaction {
+
+    @Id
+    @GeneratedValue(strategy= GenerationType.AUTO)
+    private Integer id;
+    private Integer customerRewardsId;
+    private Integer customerId;
+    private Date transactionDate;
+
+    public Transaction(){
+        transactionDate = Calendar.getInstance().getTime();
+    }
+
+    public void setTransactionDate(Date transactionDate){
+        this.transactionDate = transactionDate;
+    }
+}

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/repository/CustomerRewardsRepository.java

@@ -0,0 +1,11 @@
+package com.baeldung.loadtesting.repository;
+
+import com.baeldung.loadtesting.model.CustomerRewardsAccount;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+
+public interface CustomerRewardsRepository extends JpaRepository<CustomerRewardsAccount, Integer> {
+
+    Optional<CustomerRewardsAccount> findByCustomerId(Integer customerId);
+}

testing-modules/load-testing-comparison/src/main/java/com/baeldung/loadtesting/repository/TransactionRepository.java

@@ -0,0 +1,11 @@
+package com.baeldung.loadtesting.repository;
+
+import com.baeldung.loadtesting.model.Transaction;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface TransactionRepository extends JpaRepository<Transaction, Integer> {
+
+    List<Transaction> findByCustomerRewardsId(Integer rewardsId);
+}

testing-modules/load-testing-comparison/src/main/resources/scripts/Gatling/GatlingScenario.scala

@@ -0,0 +1,52 @@
+package com.baeldung
+
+import scala.util._
+import io.gatling.core.Predef._
+import io.gatling.http.Predef._
+import scala.concurrent.duration._
+
+class RewardsScenario extends Simulation {
+
+  def randCustId() = Random.nextInt(99)
+  
+  val httpProtocol = http.baseUrl("http://localhost:8080")
+					    .acceptHeader("text/html,application/json;q=0.9,*/*;q=0.8")
+						.doNotTrackHeader("1")
+						.acceptLanguageHeader("en-US,en;q=0.5")
+						.acceptEncodingHeader("gzip, deflate")
+						.userAgentHeader("Mozilla/5.0 (Windows NT 5.1; rv:31.0) Gecko/20100101 Firefox/31.0")
+  
+  val scn = scenario("RewardsScenario")
+	.repeat(10){
+		exec(http("transactions_add")
+		  .post("/transactions/add/")
+		  .body(StringBody("""{ "customerRewardsId":null,"customerId":""""+ randCustId() + """","transactionDate":null }""")).asJson
+		.check(jsonPath("$.id").saveAs("txnId"))
+		.check(jsonPath("$.transactionDate").saveAs("txtDate"))
+		.check(jsonPath("$.customerId").saveAs("custId")))
+		.pause(1)
+		
+		.exec(http("get_reward")
+		  .get("/rewards/find/${custId}")
+		  .check(jsonPath("$.id").saveAs("rwdId")))
+		.pause(1)
+		
+		.doIf("${rwdId.isUndefined()}"){
+			exec(http("rewards_add")
+			  .post("/rewards/add")
+			  .body(StringBody("""{ "customerId": "${custId}" }""")).asJson
+			.check(jsonPath("$.id").saveAs("rwdId")))
+		}
+		
+		.exec(http("transactions_add")
+		  .post("/transactions/add/")
+		  .body(StringBody("""{ "customerRewardsId":"${rwdId}","customerId":"${custId}","transactionDate":"${txtDate}" }""")).asJson)
+		.pause(1)
+		
+		.exec(http("get_reward")
+		  .get("/transactions/findAll/${rwdId}"))
+	}
+  setUp(
+    scn.inject(atOnceUsers(100))
+  ).protocols(httpProtocol)
+}

testing-modules/load-testing-comparison/src/main/resources/scripts/JMeter/Test Plan.jmx

@@ -0,0 +1,293 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.0 r1840935">
+  <hashTree>
+    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Test Plan" enabled="true">
+      <stringProp name="TestPlan.comments"></stringProp>
+      <boolProp name="TestPlan.functional_mode">false</boolProp>
+      <boolProp name="TestPlan.tearDown_on_shutdown">true</boolProp>
+      <boolProp name="TestPlan.serialize_threadgroups">false</boolProp>
+      <elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+        <collectionProp name="Arguments.arguments"/>
+      </elementProp>
+      <stringProp name="TestPlan.user_define_classpath"></stringProp>
+    </TestPlan>
+    <hashTree>
+      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group" enabled="true">
+        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
+        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
+          <boolProp name="LoopController.continue_forever">false</boolProp>
+          <stringProp name="LoopController.loops">10</stringProp>
+        </elementProp>
+        <stringProp name="ThreadGroup.num_threads">100</stringProp>
+        <stringProp name="ThreadGroup.ramp_time">0</stringProp>
+        <boolProp name="ThreadGroup.scheduler">false</boolProp>
+        <stringProp name="ThreadGroup.duration"></stringProp>
+        <stringProp name="ThreadGroup.delay"></stringProp>
+      </ThreadGroup>
+      <hashTree>
+        <LoopController guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
+          <boolProp name="LoopController.continue_forever">true</boolProp>
+          <stringProp name="LoopController.loops">1</stringProp>
+        </LoopController>
+        <hashTree>
+          <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="HTTP Header Manager" enabled="true">
+            <collectionProp name="HeaderManager.headers">
+              <elementProp name="" elementType="Header">
+                <stringProp name="Header.name">Content-Type</stringProp>
+                <stringProp name="Header.value">application/json</stringProp>
+              </elementProp>
+            </collectionProp>
+          </HeaderManager>
+          <hashTree/>
+          <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Add Transaction" enabled="true">
+            <boolProp name="HTTPSampler.postBodyRaw">true</boolProp>
+            <elementProp name="HTTPsampler.Arguments" elementType="Arguments">
+              <collectionProp name="Arguments.arguments">
+                <elementProp name="" elementType="HTTPArgument">
+                  <boolProp name="HTTPArgument.always_encode">false</boolProp>
+                  <stringProp name="Argument.value">{&quot;customerRewardsId&quot;:null,&quot;customerId&quot;:${random},&quot;transactionDate&quot;:null}</stringProp>
+                  <stringProp name="Argument.metadata">=</stringProp>
+                </elementProp>
+              </collectionProp>
+            </elementProp>
+            <stringProp name="HTTPSampler.domain">localhost</stringProp>
+            <stringProp name="HTTPSampler.port">8080</stringProp>
+            <stringProp name="HTTPSampler.protocol">http</stringProp>
+            <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+            <stringProp name="HTTPSampler.path">/transactions/add</stringProp>
+            <stringProp name="HTTPSampler.method">POST</stringProp>
+            <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+            <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+            <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+            <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+            <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+            <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+            <stringProp name="HTTPSampler.response_timeout"></stringProp>
+          </HTTPSamplerProxy>
+          <hashTree>
+            <JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="Transaction Id Extractor" enabled="true">
+              <stringProp name="JSONPostProcessor.referenceNames">txnId</stringProp>
+              <stringProp name="JSONPostProcessor.jsonPathExprs">$.id</stringProp>
+              <stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
+              <stringProp name="Sample.scope">all</stringProp>
+              <stringProp name="JSONPostProcessor.defaultValues">foo</stringProp>
+            </JSONPostProcessor>
+            <hashTree/>
+            <JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="Transaction Date Extractor" enabled="true">
+              <stringProp name="JSONPostProcessor.referenceNames">txnDate</stringProp>
+              <stringProp name="JSONPostProcessor.jsonPathExprs">$.transactionDate</stringProp>
+              <stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
+              <stringProp name="JSONPostProcessor.defaultValues">Never</stringProp>
+            </JSONPostProcessor>
+            <hashTree/>
+            <JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="Customer Id Extractor" enabled="true">
+              <stringProp name="JSONPostProcessor.referenceNames">custId</stringProp>
+              <stringProp name="JSONPostProcessor.jsonPathExprs">$.customerId</stringProp>
+              <stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
+              <stringProp name="Sample.scope">all</stringProp>
+              <stringProp name="JSONPostProcessor.defaultValues">bob</stringProp>
+            </JSONPostProcessor>
+            <hashTree/>
+          </hashTree>
+          <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Find Reward Account" enabled="true">
+            <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+              <collectionProp name="Arguments.arguments"/>
+            </elementProp>
+            <stringProp name="HTTPSampler.domain">localhost</stringProp>
+            <stringProp name="HTTPSampler.port">8080</stringProp>
+            <stringProp name="HTTPSampler.protocol"></stringProp>
+            <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+            <stringProp name="HTTPSampler.path">/rewards/find/${custId}</stringProp>
+            <stringProp name="HTTPSampler.method">GET</stringProp>
+            <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+            <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+            <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+            <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+            <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+            <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+            <stringProp name="HTTPSampler.response_timeout"></stringProp>
+          </HTTPSamplerProxy>
+          <hashTree>
+            <JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="JSON Extractor" enabled="true">
+              <stringProp name="JSONPostProcessor.referenceNames">rwdId</stringProp>
+              <stringProp name="JSONPostProcessor.jsonPathExprs">$.id</stringProp>
+              <stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
+              <stringProp name="JSONPostProcessor.defaultValues">0</stringProp>
+              <stringProp name="Sample.scope">all</stringProp>
+            </JSONPostProcessor>
+            <hashTree/>
+          </hashTree>
+          <IfController guiclass="IfControllerPanel" testclass="IfController" testname="If Reward Account Does Not Exist" enabled="true">
+            <stringProp name="IfController.condition">${rwdId} == 0</stringProp>
+            <boolProp name="IfController.evaluateAll">true</boolProp>
+          </IfController>
+          <hashTree>
+            <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Add Reward" enabled="true">
+              <boolProp name="HTTPSampler.postBodyRaw">true</boolProp>
+              <elementProp name="HTTPsampler.Arguments" elementType="Arguments">
+                <collectionProp name="Arguments.arguments">
+                  <elementProp name="" elementType="HTTPArgument">
+                    <boolProp name="HTTPArgument.always_encode">false</boolProp>
+                    <stringProp name="Argument.value">{&quot;customerId&quot;:${custId}}</stringProp>
+                    <stringProp name="Argument.metadata">=</stringProp>
+                  </elementProp>
+                </collectionProp>
+              </elementProp>
+              <stringProp name="HTTPSampler.domain">localhost</stringProp>
+              <stringProp name="HTTPSampler.port">8080</stringProp>
+              <stringProp name="HTTPSampler.protocol"></stringProp>
+              <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+              <stringProp name="HTTPSampler.path">/rewards/add</stringProp>
+              <stringProp name="HTTPSampler.method">POST</stringProp>
+              <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+              <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+              <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+              <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+              <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+              <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+              <stringProp name="HTTPSampler.response_timeout"></stringProp>
+            </HTTPSamplerProxy>
+            <hashTree>
+              <JSONPostProcessor guiclass="JSONPostProcessorGui" testclass="JSONPostProcessor" testname="JSON Extractor" enabled="true">
+                <stringProp name="JSONPostProcessor.referenceNames">rwdId</stringProp>
+                <stringProp name="JSONPostProcessor.jsonPathExprs">$.id</stringProp>
+                <stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
+                <stringProp name="JSONPostProcessor.defaultValues">bar</stringProp>
+                <stringProp name="Sample.scope">all</stringProp>
+              </JSONPostProcessor>
+              <hashTree/>
+            </hashTree>
+          </hashTree>
+          <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Update Transaction" enabled="true">
+            <boolProp name="HTTPSampler.postBodyRaw">true</boolProp>
+            <elementProp name="HTTPsampler.Arguments" elementType="Arguments">
+              <collectionProp name="Arguments.arguments">
+                <elementProp name="" elementType="HTTPArgument">
+                  <boolProp name="HTTPArgument.always_encode">false</boolProp>
+                  <stringProp name="Argument.value">{&quot;id&quot;:${txnId},&quot;customerRewardsId&quot;:${rwdId},&quot;customerId&quot;:${custId},&quot;transactionDate&quot;:&quot;${txnDate}&quot;}</stringProp>
+                  <stringProp name="Argument.metadata">=</stringProp>
+                </elementProp>
+              </collectionProp>
+            </elementProp>
+            <stringProp name="HTTPSampler.domain">localhost</stringProp>
+            <stringProp name="HTTPSampler.port">8080</stringProp>
+            <stringProp name="HTTPSampler.protocol"></stringProp>
+            <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+            <stringProp name="HTTPSampler.path">/transactions/add</stringProp>
+            <stringProp name="HTTPSampler.method">POST</stringProp>
+            <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+            <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+            <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+            <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+            <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+            <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+            <stringProp name="HTTPSampler.response_timeout"></stringProp>
+          </HTTPSamplerProxy>
+          <hashTree/>
+          <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="Find All Transactions" enabled="true">
+            <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+              <collectionProp name="Arguments.arguments"/>
+            </elementProp>
+            <stringProp name="HTTPSampler.domain">localhost</stringProp>
+            <stringProp name="HTTPSampler.port">8080</stringProp>
+            <stringProp name="HTTPSampler.protocol"></stringProp>
+            <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+            <stringProp name="HTTPSampler.path">/transactions/findAll/${rwdId}</stringProp>
+            <stringProp name="HTTPSampler.method">GET</stringProp>
+            <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+            <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+            <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+            <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+            <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+            <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+            <stringProp name="HTTPSampler.response_timeout"></stringProp>
+          </HTTPSamplerProxy>
+          <hashTree/>
+        </hashTree>
+        <RandomVariableConfig guiclass="TestBeanGUI" testclass="RandomVariableConfig" testname="Random Variable" enabled="true">
+          <stringProp name="maximumValue">10000</stringProp>
+          <stringProp name="minimumValue">1</stringProp>
+          <stringProp name="outputFormat"></stringProp>
+          <boolProp name="perThread">false</boolProp>
+          <stringProp name="randomSeed">67</stringProp>
+          <stringProp name="variableName">random</stringProp>
+        </RandomVariableConfig>
+        <hashTree/>
+        <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="true">
+          <boolProp name="ResultCollector.error_logging">false</boolProp>
+          <objProp>
+            <name>saveConfig</name>
+            <value class="SampleSaveConfiguration">
+              <time>true</time>
+              <latency>true</latency>
+              <timestamp>true</timestamp>
+              <success>true</success>
+              <label>true</label>
+              <code>true</code>
+              <message>true</message>
+              <threadName>true</threadName>
+              <dataType>true</dataType>
+              <encoding>false</encoding>
+              <assertions>true</assertions>
+              <subresults>true</subresults>
+              <responseData>false</responseData>
+              <samplerData>false</samplerData>
+              <xml>false</xml>
+              <fieldNames>true</fieldNames>
+              <responseHeaders>false</responseHeaders>
+              <requestHeaders>false</requestHeaders>
+              <responseDataOnError>false</responseDataOnError>
+              <saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
+              <assertionsResultsToSave>0</assertionsResultsToSave>
+              <bytes>true</bytes>
+              <sentBytes>true</sentBytes>
+              <url>true</url>
+              <threadCounts>true</threadCounts>
+              <idleTime>true</idleTime>
+              <connectTime>true</connectTime>
+            </value>
+          </objProp>
+          <stringProp name="filename"></stringProp>
+        </ResultCollector>
+        <hashTree/>
+        <ResultCollector guiclass="SummaryReport" testclass="ResultCollector" testname="Summary Report" enabled="true">
+          <boolProp name="ResultCollector.error_logging">false</boolProp>
+          <objProp>
+            <name>saveConfig</name>
+            <value class="SampleSaveConfiguration">
+              <time>true</time>
+              <latency>true</latency>
+              <timestamp>true</timestamp>
+              <success>true</success>
+              <label>true</label>
+              <code>true</code>
+              <message>true</message>
+              <threadName>true</threadName>
+              <dataType>true</dataType>
+              <encoding>false</encoding>
+              <assertions>true</assertions>
+              <subresults>true</subresults>
+              <responseData>false</responseData>
+              <samplerData>false</samplerData>
+              <xml>false</xml>
+              <fieldNames>true</fieldNames>
+              <responseHeaders>false</responseHeaders>
+              <requestHeaders>false</requestHeaders>
+              <responseDataOnError>false</responseDataOnError>
+              <saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
+              <assertionsResultsToSave>0</assertionsResultsToSave>
+              <bytes>true</bytes>
+              <sentBytes>true</sentBytes>
+              <url>true</url>
+              <threadCounts>true</threadCounts>
+              <idleTime>true</idleTime>
+              <connectTime>true</connectTime>
+            </value>
+          </objProp>
+          <stringProp name="filename"></stringProp>
+        </ResultCollector>
+        <hashTree/>
+      </hashTree>
+    </hashTree>
+  </hashTree>
+</jmeterTestPlan>

testing-modules/load-testing-comparison/src/main/resources/scripts/The Grinder/grinder.properties

@@ -0,0 +1,5 @@
+grinder.script = grinder.py
+grinder.threads = 100
+grinder.processes = 1
+grinder.runs = 10
+grinder.logDirectory = /logs

testing-modules/load-testing-comparison/src/main/resources/scripts/The Grinder/grinder.py

@@ -0,0 +1,40 @@
+import java.util.Random
+from net.grinder.script import Test
+from net.grinder.script.Grinder import grinder
+from net.grinder.plugin.http import HTTPRequest, HTTPPluginControl, HTTPUtilities
+from HTTPClient import NVPair
+
+def parseJsonString(json, element):
+  for x in json.split(","):
+    pc = x.replace('"','').split(":")
+    if pc[0].replace("{","") == element:
+      ele = pc[1].replace("}","")
+      return ele
+    else:
+      return ""
+
+test1 = Test(1, "Request resource")
+request1 = HTTPRequest()
+headers = \
+( NVPair('Content-Type', 'application/json'), )
+request1.setHeaders(headers)
+utilities = HTTPPluginControl.getHTTPUtilities()
+test1.record(request1)
+random=java.util.Random()
+
+class TestRunner:
+    def __call__(self):
+        customerId = str(random.nextInt());
+
+        result = request1.POST("http://localhost:8080/transactions/add", "{"'"customerRewardsId"'":null,"'"customerId"'":"+ customerId + ","'"transactionDate"'":null}")
+        txnId = parseJsonString(result.getText(), "id")
+
+        result = request1.GET("http://localhost:8080/rewards/find/"+ customerId)
+        rwdId = parseJsonString(result.getText(), "id")
+
+        if rwdId == "":
+          result = request1.POST("http://localhost:8080/rewards/add", "{"'"customerId"'":"+ customerId + "}")
+          rwdId = parseJsonString(result.getText(), "id")
+
+        result = request1.POST("http://localhost:8080/transactions/add", "{"'"id"'":" + txnId + ","'"customerRewardsId"'":" + rwdId + ","'"customerId"'":"+ customerId + ","'"transactionDate"'":null}")
+        result = request1.GET("http://localhost:8080/transactions/findAll/" + rwdId)