Update Jenkinsfile

.gitignore

@@ -1 +1,2 @@
 .idea/*
+target

Dockerfile

@@ -0,0 +1,8 @@
+FROM openjdk:8-jre-alpine
+
+EXPOSE 8080
+
+COPY ./target/java-maven-app-1.0-SNAPSHOT.jar /usr/app/
+WORKDIR /usr/app
+
+ENTRYPOINT ["java", "-jar", "java-maven-app-1.0-SNAPSHOT.jar"]

Jenkinsfile

@@ -1,37 +1,51 @@
+#!/usr/bin/env groovy
+
+library identifier: 'jenkins-shared-library@master', retriever: modernSCM(
+    [$class: 'GitSCMSource',
+     remote: 'https://gitlab.com/nanuchi/jenkins-shared-library.git',
+     credentialsId: 'gitlab-credentials'
+    ]
+)
+
 pipeline {
     agent any
+    tools {
+        maven 'Maven'
+    }
     environment {
-        ANSIBLE_SERVER = "167.99.136.157"
+        IMAGE_NAME = 'nanajanashia/demo-app:java-maven-2.0'
     }
     stages {
-        stage("copy files to ansible server") {
+        stage('build app') {
             steps {
                script {
-                    echo "copying all neccessary files to ansible control node"
+                  echo 'building application jar...'
-                    sshagent(['ansible-server-key']) {
+                  buildJar()
-                        sh "scp -o StrictHostKeyChecking=no ansible/* root@${ANSIBLE_SERVER}:/root"
-
-                        withCredentials([sshUserPrivateKey(credentialsId: 'ec2-server-key', keyFileVariable: 'keyfile', usernameVariable: 'user')]) {
-                            sh 'scp $keyfile root@$ANSIBLE_SERVER:/root/ssh-key.pem'
                }
             }
         }
-            }
+        stage('build image') {
-        }
-        stage("execute ansible playbook") {
             steps {
                 script {
-                    echo "calling ansible playbook to configure ec2 instances"
+                   echo 'building docker image...'
-                    def remote = [:]
+                   buildImage(env.IMAGE_NAME)
-                    remote.name = "ansible-server"
+                   dockerLogin()
-                    remote.host = ANSIBLE_SERVER
+                   dockerPush(env.IMAGE_NAME)
-                    remote.allowAnyHosts = true
+                }
+            }
+        }
+        stage('deploy') {
+            steps {
+                script {
+                   echo 'deploying docker image to EC2...'
 
-                    withCredentials([sshUserPrivateKey(credentialsId: 'ansible-server-key', keyFileVariable: 'keyfile', usernameVariable: 'user')]){
+                   def shellCmd = "bash ./server-cmds.sh ${IMAGE_NAME}"
-                        remote.user = user
+                   def ec2Instance = "ec2-user@35.180.251.121"
-                        remote.identityFile = keyfile
+
-                        sshScript remote: remote, script: "prepare-ansible-server.sh"
+                   sshagent(['ec2-server-key']) {
-                        sshCommand remote: remote, command: "ansible-playbook my-playbook.yaml"
+                       sh "scp -o StrictHostKeyChecking=no server-cmds.sh ${ec2Instance}:/home/ec2-user"
+                       sh "scp -o StrictHostKeyChecking=no docker-compose.yaml ${ec2Instance}:/home/ec2-user"
+                       sh "ssh -o StrictHostKeyChecking=no ${ec2Instance} ${shellCmd}"
                    }
                 }
             }

ansible/ansible.cfg

@@ -1,9 +0,0 @@
-[defaults]
-host_key_checking = False
-inventory = inventory_aws_ec2.yaml
-
-interpreter_python = /usr/bin/python3
-enable_plugins = aws_ec2
-
-remote_user = ec2-user
-private_key_file = ~/ssh-key.pem

ansible/inventory_aws_ec2.yaml

@@ -1,9 +0,0 @@
----
-plugin: aws_ec2
-regions: 
-  - eu-west-3
-keyed_groups:
-  - key: tags
-    prefix: tag
-  - key: instance_type
-    prefix: instance_type

ansible/my-playbook.yaml

@@ -1,29 +0,0 @@
----
-- name: Install python3, docker, docker-compose
-  hosts: all
-  become: yes
-  gather_facts: False
-  tasks:
-    - name: Install python3 and docker
-      vars:
-        ansible_python_interpreter: /usr/bin/python
-      yum:
-        name:
-          - python3
-          - docker
-        update_cache: yes
-        state: present
-    - name: Install Docker-compose
-      get_url: 
-        url: https://github.com/docker/compose/releases/download/1.27.4/docker-compose-Linux-{{lookup('pipe', 'uname -m')}}
-        dest: /usr/local/bin/docker-compose
-        mode: +x
-    - name: Start docker daemon
-      systemd:
-        name: docker
-        state: started
-    - name: Install docker python module
-      pip:
-        name: 
-          - docker
-          - docker-compose

docker-compose.yaml

@@ -0,0 +1,12 @@
+version: '3.8'
+services:
+    java-maven-app:
+      image: ${IMAGE}
+      ports:
+        - 8080:8080
+    postgres:
+      image: postgres:13
+      ports:
+        - 5432:5432
+      environment:
+        - POSTGRES_PASSWORD=my-pwd

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.example</groupId>
     <artifactId>java-maven-app</artifactId>
-    <version>1.1.0-SNAPSHOT</version>
+    <version>1.0-SNAPSHOT</version>
 
     <build>
         <plugins>
@@ -22,20 +22,13 @@
                     </execution>
                 </executions>
             </plugin>
-
-            <!-- to handle any Java version mismatch, add the following configuration for maven-compiler-plugin -->
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.0</version>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
-
+    <properties>
+        <java.version>1.8</java.version>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+    </properties>
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>

prepare-ansible-server.sh

@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-
-apt update
-apt install ansible -y
-apt install python3-pip -y
-pip3 install boto3 botocore

script.groovy

@@ -1,19 +0,0 @@
-def buildJar() {
-    echo "building the application..."
-    sh 'mvn package'
-} 
-
-def buildImage() {
-    echo "building the docker image..."
-    withCredentials([usernamePassword(credentialsId: 'docker-hub-repo', passwordVariable: 'PASS', usernameVariable: 'USER')]) {
-        sh 'docker build -t nanajanashia/demo-app:jma-2.0 .'
-        sh "echo $PASS | docker login -u $USER --password-stdin"
-        sh 'docker push nanajanashia/demo-app:jma-2.0'
-    }
-} 
-
-def deployApp() {
-    echo 'deploying the application...'
-} 
-
-return this

server-cmds.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+export IMAGE=$1
+docker-compose -f docker-compose.yaml up --detach
+echo "success"

src/main/resources/static/index.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>MyApp</title>
+</head>
+<body>
+<h1>Welcome to Java Maven Application</h1>
+<!-- add image here  <img src="" width="" /> -->
+</body>
+</html>

src/test/java/AppTest.java

@@ -0,0 +1,16 @@
+import com.example.Application;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class AppTest {
+
+    @Test
+    public void testApp() {
+        Application myApp = new Application();
+
+        String result = myApp.getStatus();
+
+        assertEquals("OK", result);
+    }
+
+}