DaGeRe

This little tutorial defines how to reproduce the Kieker demo for the TeaStore that was presented for the Chemnitzer Linuxtage. It shows how the architecture can be restructed and how a regression can be spotted.

Prerequisites

Please make sure you install the following tools:

• Make sure you got JDK 11 installed and $JAVA_HOME set correctly.
• Make sure you got JMeter installed and $JMETER_HOME pointing to its folder.
• Make sure you got Kieker (https://github.com/kieker-monitoring/kieker) downloaded (e.g. git clone https://github.com/kieker-monitoring/kieker.git) and built via ./gradlew assemble -x test -x check -x apidoc (we use the current 2.0.0-SNAPSHOT - please file an issue if you have a problem with this steps in a newer version). Set $KIEKER_HOME to the root folder of your built Kieker.
• My fork of the TeaStore: https://github.com/DaGeRe/TeaStore (git clone https://github.com/DaGeRe/TeaStore.git)
• GraphViz (For Ubuntu: sudo apt install graphviz)
• docker (For Ubuntu: `sudo apt insta

DaGeRe

package checkers;

import java.util.Stack;

class Solution {
   final int row, col;

   public Solution(int row, int col) {
      this.row = row;
      this.col = col;

DaGeRe

/**
 * Compilation fails in Java 8 because "UncompilableComparable.java:[16,10] variable entry might not have been initialized", but works in Java 11
*/
public class UncompilableComparable implements Comparable<UncompilableComparable> {

   private Comparator<UncompilableComparable> comparator = Comparator.comparingInt(entry -> System.identityHashCode(entry));

   private final int typ;

   public UncompilableComparable(final int typ) {

DaGeRe

pipeline {
    agent any


    stages {
        stage('checkout') {
            steps{
                dir('kopeme') {
                    git branch: 'develop', url: 'https://github.com/DaGeRe/KoPeMe.git'
                }

DaGeRe

wget https://archive.apache.org/dist/tomcat/tomcat-6/v6.0.9/bin/apache-tomcat-6.0.9.tar.gz
wget https://www-eu.apache.org/dist/tomcat/tomcat-9/v9.0.16/bin/apache-tomcat-9.0.16.tar.gz
tar -xvf apache-tomcat-6.0.9.tar.gz
tar -xvf apache-tomcat-9.0.16.tar.gz

rm apache-tomcat-9.0.16/webapps/ROOT/* -rf
cp -r apache-tomcat-6.0.9/webapps/ROOT/* apache-tomcat-9.0.16/webapps/ROOT/

path=$(pwd)
for tomcat in "apache-tomcat-9.0.16" "apache-tomcat-6.0.9"