First Commit

.gitignore

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+i### Gradle template
+.gradle/
+build/
+
+### Java template
+*.class
+.settings
+.classpath
+.project
+
+# Package Files #
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio
+
+## File-based project format:
+*.ipr
+*.iws
+*.iml
+
+## Directory-based project format:
+.idea/
+
+## Plugin-specific files:
+
+# IntelliJ
+/out/
+
+.app-src/tmp/
+bower_components/
+dist/
+node_modules/
+.tmp/
+*.log

Dockerfile

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+FROM tomcat:8.0.20-jre8
+# Dummy text to test 
+COPY target/java-web-app*.war /usr/local/tomcat/webapps/java-web-app.war

jenkins_ci_cd_docker_pipeline

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+node{
+
+    stage('SCM Checkout'){
+        git url: 'https://github.com/devopstrainingbanglore/gradle-web-app.git',branch: 'master'
+    }
+
+    stage(" Maven Clean Package"){
+      def mavenHome =  tool name: "Maven-3.5.6", type: "maven"
+      def mavenCMD = "${mavenHome}/bin/mvn"
+      sh "${mavenCMD} clean package"
+
+    } 
+
+
+    stage('Build Docker Image'){
+        sh 'docker build -t dockerhandson/java-web-app .'
+    }
+
+    stage('Push Docker Image'){
+        withCredentials([string(credentialsId: 'Docker_Hub_Pwd', variable: 'Docker_Hub_Pwd')]) {
+          sh "docker login -u dockerhandson -p ${Docker_Hub_Pwd}"
+        }
+        sh 'docker push dockerhandson/java-web-app'
+     }
+
+      stage('Run Docker Image In Dev Server'){
+
+        def dockerRun = ' docker run  -d -p 8080:8080 --name java-web-app dockerhandson/java-web-app'
+
+         sshagent(['DOCKER_SERVER']) {
+          sh 'ssh -o StrictHostKeyChecking=no [email protected] docker stop java-web-app || true'
+          sh 'ssh  [email protected] docker rm java-web-app || true'
+          sh 'ssh  [email protected] docker rmi -f  $(docker images -q) || true'
+          sh "ssh  [email protected] ${dockerRun}"
+       }
+
+    }
+
+
+}

pom.xml

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+<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/maven-v4_0_0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.mt</groupId>
+	<artifactId>java-web-app</artifactId>
+	<packaging>war</packaging>
+	<version>1.0</version>
+
+	<name>Maven Web Application</name>
+	<url>http://mithuntechnologies.com</url>
+
+	<description>Maven Web Project</description>
+
+	<organization>
+		<name>Mithun Technologies</name>
+		<url>http://mithuntechnologies.com/</url>
+	</organization>
+
+	<properties>
+		<!-- versions -->
+
+		<spring.version>5.0.2.RELEASE</spring.version>
+		<junit.version>4.12</junit.version>
+		<log4j.version>1.2.17</log4j.version>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+	</properties>
+
+	<dependencies>
+
+		<!-- test dependencies -->
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>${junit.version}</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-test</artifactId>
+			<version>3.2.3.RELEASE</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.mockito</groupId>
+			<artifactId>mockito-core</artifactId>
+			<version>1.9.5</version>
+			<scope>test</scope>
+		</dependency>
+
+		<!-- compile dependencies -->
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-core</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-web</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-webmvc</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-context</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+
+		<!-- provided dependencies -->
+
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>javax.servlet-api</artifactId>
+			<version>3.1.0</version>
+			<scope>provided</scope>
+		</dependency>
+
+		<dependency>
+		    <groupId>javax.servlet</groupId>
+		    <artifactId>jstl</artifactId>
+		    <version>1.2</version>
+		</dependency>
+
+		<!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
+		<dependency>
+		    <groupId>ch.qos.logback</groupId>
+		    <artifactId>logback-classic</artifactId>
+		    <version>1.2.3</version>
+		</dependency>
+
+	</dependencies>
+
+	<!-- <distributionManagement>
+	    <repository>
+	      <id>nexus</id>
+	      <name>Mithun Technologies Releases Nexus Repository</name>
+	      <url>http://13.235.8.113:8081/repository/flipkart-release/</url>
+	    </repository>
+	    <snapshotRepository>
+	      <id>nexus</id>
+	      <name>Mithun Technologies Snapshot Nexus Repository </name>
+	      <url>http://13.235.8.113:8081/repository/flipkart-snapshot/</url>
+	    </snapshotRepository>
+	</distributionManagement> -->
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>2.5.1</version>
+				<inherited>true</inherited>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>

src/main/java/com/rst/helloworld/service/HelloWorldService.java

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+package com.rst.helloworld.service;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+
+@Service
+public class HelloWorldService {
+
+	private static final Logger logger = LoggerFactory.getLogger(HelloWorldService.class);
+
+	public String getDesc() {
+
+		logger.debug("getDesc() is executed!");
+
+		return "Maven + Spring MVC + Jenkins + Docker Hello World Example";
+
+	}
+
+	public String getTitle(String name) {
+
+		logger.debug("getTitle() is executed! $name : {}", name);
+
+		if(StringUtils.isEmpty(name)){
+			return "Hello World";
+		}else{
+			return "Hello " + name;
+		}
+
+	}
+
+}

src/main/java/com/rst/helloworld/web/WelcomeController.java

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+package com.rst.helloworld.web;
+
+import java.util.Map;
+
+import com.rst.helloworld.service.HelloWorldService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.servlet.ModelAndView;
+
+@Controller
+public class WelcomeController {
+
+	private final Logger logger = LoggerFactory.getLogger(WelcomeController.class);
+	private final HelloWorldService helloWorldService;
+
+	@Autowired
+	public WelcomeController(HelloWorldService helloWorldService) {
+		this.helloWorldService = helloWorldService;
+	}
+
+	@RequestMapping(value = "/", method = RequestMethod.GET)
+	public String index(Map<String, Object> model) {
+
+		logger.debug("index() is executed!");
+
+		model.put("title", helloWorldService.getTitle(""));
+		model.put("msg", helloWorldService.getDesc());
+
+		return "index";
+	}
+
+	@RequestMapping(value = "/hello/{name:.+}", method = RequestMethod.GET)
+	public ModelAndView hello(@PathVariable("name") String name) {
+
+		logger.debug("hello() is executed - $name {}", name);
+
+		ModelAndView model = new ModelAndView();
+		model.setViewName("index");
+
+		model.addObject("title", helloWorldService.getTitle(name));
+		model.addObject("msg", helloWorldService.getDesc());
+
+		return model;
+
+	}
+
+}

src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+
+	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+		<layout class="ch.qos.logback.classic.PatternLayout">
+
+			<Pattern>
+				%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
+			</Pattern>
+
+		</layout>
+	</appender>
+
+	<logger name="org.springframework" level="debug" additivity="false">
+		<appender-ref ref="STDOUT" />
+	</logger>
+
+	<logger name="com.rst.helloworld" level="debug" additivity="false">
+		<appender-ref ref="STDOUT" />
+	</logger>
+
+	<root level="debug">
+		<appender-ref ref="STDOUT" />
+	</root>
+
+</configuration>

src/main/webapp/WEB-INF/spring-core-config.xml

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+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:context="http://www.springframework.org/schema/context"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:mvc="http://www.springframework.org/schema/mvc"
+	xsi:schemaLocation="
+        http://www.springframework.org/schema/beans     
+        http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/context 
+        http://www.springframework.org/schema/context/spring-context.xsd ">
+
+	<context:component-scan base-package="com.rst.helloworld.service" />
+
+</beans>

src/main/webapp/WEB-INF/spring-mvc-config.xml

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+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:context="http://www.springframework.org/schema/context"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:mvc="http://www.springframework.org/schema/mvc"
+	xsi:schemaLocation="
+        http://www.springframework.org/schema/beans     
+        http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/mvc 
+        http://www.springframework.org/schema/mvc/spring-mvc.xsd
+        http://www.springframework.org/schema/context 
+        http://www.springframework.org/schema/context/spring-context.xsd ">
+
+	<context:component-scan base-package="com.rst.helloworld.web" />
+
+	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
+		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
+		<property name="prefix" value="/WEB-INF/views/jsp/" />
+		<property name="suffix" value=".jsp" />
+	</bean>
+
+	<mvc:resources mapping="/resources/**" location="/resources/" />
+
+	<mvc:annotation-driven />
+
+</beans>