Merge pull request #4096 from markusgulden/master

BAEL-1369

spring-cloud/pom.xml

@@ -22,6 +22,7 @@
         <module>spring-cloud-consul</module>
         <module>spring-cloud-zuul-eureka-integration</module>
         <module>spring-cloud-contract</module>
+        <module>spring-cloud-kubernetes</module>
     </modules>
     <packaging>pom</packaging>
 

spring-cloud/spring-cloud-kubernetes/demo-backend/.gitignore

@@ -0,0 +1,24 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+.nb-gradle/

spring-cloud/spring-cloud-kubernetes/demo-backend/Dockerfile

@@ -0,0 +1,5 @@
+FROM openjdk:8-jdk-alpine
+VOLUME /tmp
+COPY target/demo-backend-1.0-SNAPSHOT.jar app.jar
+ENV JAVA_OPTS=""
+ENTRYPOINT exec java -jar /app.jar --debug

spring-cloud/spring-cloud-kubernetes/demo-backend/pom.xml

@@ -0,0 +1,43 @@
+<?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">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>com.baeldung.spring.cloud</groupId>
+		<artifactId>spring-cloud-kubernetes</artifactId>
+		<version>1.0-SNAPSHOT</version>
+	</parent>
+	<artifactId>demo-backend</artifactId>
+
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>

spring-cloud/spring-cloud-kubernetes/demo-backend/src/main/java/com/baeldung/spring/cloud/kubernetes/backend/KubernetesBackendApplication.java

@@ -0,0 +1,24 @@
+package com.baeldung.spring.cloud.kubernetes.backend;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+@SpringBootApplication
+@RestController
+public class KubernetesBackendApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(KubernetesBackendApplication.class, args);
+	}
+
+	@GetMapping("")
+    public String helloWorld() throws UnknownHostException {
+
+	    return "Hello from " + InetAddress.getLocalHost().getHostName();
+    }
+}

spring-cloud/spring-cloud-kubernetes/demo-backend/src/main/resources/application.properties

@@ -0,0 +1 @@
+server.port=8080

spring-cloud/spring-cloud-kubernetes/demo-backend/src/test/java/com/baeldung/spring/cloud/kubernetes/backend/KubernetesBackendApplicationTests.java

@@ -0,0 +1,16 @@
+package com.baeldung.spring.cloud.kubernetes.backend;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class KubernetesBackendApplicationTests {
+
+	@Test
+	public void contextLoads() {
+	}
+
+}

spring-cloud/spring-cloud-kubernetes/demo-frontend/.gitignore

@@ -0,0 +1,24 @@
+target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+.nb-gradle/

spring-cloud/spring-cloud-kubernetes/demo-frontend/Dockerfile

@@ -0,0 +1,5 @@
+FROM openjdk:8-jdk-alpine
+VOLUME /tmp
+COPY target/demo-frontend-1.0-SNAPSHOT.jar app.jar
+ENV JAVA_OPTS=""
+ENTRYPOINT exec java -jar /app.jar

spring-cloud/spring-cloud-kubernetes/demo-frontend/pom.xml

@@ -0,0 +1,43 @@
+<?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">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-kubernetes</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>demo-frontend</artifactId>
+
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>

spring-cloud/spring-cloud-kubernetes/demo-frontend/src/main/java/com/baeldung/spring/cloud/kubernetes/frontend/KubernetesFrontendApplication.java

@@ -0,0 +1,30 @@
+package com.baeldung.spring.cloud.kubernetes.frontend;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
+
+import java.net.UnknownHostException;
+
+@RestController
+@SpringBootApplication
+public class KubernetesFrontendApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(KubernetesFrontendApplication.class, args);
+	}
+
+	@GetMapping
+	public String helloWorld() throws UnknownHostException {
+
+		RestTemplate restTemplate = new RestTemplate();
+		String resourceUrl
+				= "http://demo-backend:8080";
+		ResponseEntity<String> response
+				= restTemplate.getForEntity(resourceUrl, String.class);
+		return "Message from backend is: " + response.getBody();
+	}
+}

spring-cloud/spring-cloud-kubernetes/demo-frontend/src/main/resources/application.properties

@@ -0,0 +1 @@
+server.port=8081

spring-cloud/spring-cloud-kubernetes/demo-frontend/src/test/java/com/baeldung/spring/cloud/kubernetes/frontend/KubernetesFrontendApplicationTests.java

@@ -0,0 +1,16 @@
+package com.baeldung.spring.cloud.kubernetes.frontend;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class KubernetesFrontendApplicationTests {
+
+	@Test
+	public void contextLoads() {
+	}
+
+}

spring-cloud/spring-cloud-kubernetes/object-configurations/backend-deployment.yaml

@@ -0,0 +1,36 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: demo-backend
+spec:
+  selector:
+    app: demo-backend
+    tier: backend
+  ports:
+  - protocol: TCP
+    port: 8080
+  type: ClusterIP
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: demo-backend
+spec:
+  selector:
+      matchLabels:
+        app: demo-backend
+        tier: backend
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        app: demo-backend
+        tier: backend
+    spec:
+      containers:
+        - name: demo-backend
+          image: demo-backend:latest
+          imagePullPolicy: Never
+          ports:
+            - containerPort: 8080
+

spring-cloud/spring-cloud-kubernetes/object-configurations/frontend-deployment.yaml

@@ -0,0 +1,34 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: demo-frontend
+spec:
+  selector:
+    app: demo-frontend
+  ports:
+  - protocol: TCP
+    port: 8081
+    nodePort: 30001
+  type: NodePort
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: demo-frontend
+spec:
+  selector:
+      matchLabels:
+        app: demo-frontend
+  replicas: 3
+  template:
+    metadata:
+      labels:
+        app: demo-frontend
+    spec:
+      containers:
+        - name: demo-frontend
+          image: demo-frontend:latest
+          imagePullPolicy: Never
+          ports:
+            - containerPort: 8081
+

spring-cloud/spring-cloud-kubernetes/pom.xml

@@ -0,0 +1,26 @@
+<?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">
+
+    <groupId>com.baeldung.spring.cloud</groupId>
+    <artifactId>spring-cloud-kubernetes</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>demo-frontend</module>
+        <module>demo-backend</module>
+    </modules>
+
+    <parent>
+        <artifactId>parent-boot-5</artifactId>
+        <groupId>com.baeldung</groupId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-5</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+
+
+</project>