├── .gitignore
├── pom.xml
├── readme.adoc
└── src
    └── main
        ├── java
            └── org
            │   └── example
            │       └── webapp
            │           ├── Database.java
            │           └── Main.java
        └── webapp
            ├── WEB-INF
                └── beans.xml
            └── index.jsp


/.gitignore:
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1 | nb-configuration.xml
2 | /target/
3 | 


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/pom.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <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">
 3 |     <modelVersion>4.0.0</modelVersion>
 4 |     <groupId>org.sample</groupId>
 5 |     <artifactId>kubernetes-maven-sample</artifactId>
 6 |     <version>1.0-SNAPSHOT</version>
 7 |     <packaging>jar</packaging>
 8 |     <name>kubernetes-maven-sample</name>
 9 |     <properties>
10 |         <java.version>1.8</java.version>
11 |         <fabric8.generator.name>arungupta/${project.artifactId}</fabric8.generator.name>
12 |     </properties>
13 |     <dependencies>
14 |         <dependency>
15 |             <groupId>com.couchbase.client</groupId>
16 |             <artifactId>java-client</artifactId>
17 |             <version>2.4.0</version>
18 |         </dependency>
19 |     </dependencies>
20 |     <build>
21 |         <finalName>${project.name}</finalName>
22 |         <plugins>
23 |             <plugin>
24 |                 <groupId>org.apache.maven.plugins</groupId>
25 |                 <artifactId>maven-shade-plugin</artifactId>
26 |                 <version>2.3</version>
27 |                 <configuration>
28 |                     <createDependencyReducedPom>false</createDependencyReducedPom>
29 |                 </configuration>
30 |                 <executions>
31 |                     <execution>
32 |                         <phase>package</phase>
33 |                         <goals>
34 |                             <goal>shade</goal>
35 |                         </goals>
36 |                     </execution>
37 |                 </executions>
38 |             </plugin>
39 |             <plugin>
40 |                 <groupId>io.fabric8</groupId>
41 |                 <artifactId>fabric8-maven-plugin</artifactId>
42 |                 <version>3.2.14</version>
43 |                 <executions>
44 |                     <execution>
45 |                         <goals>
46 |                             <goal>resource</goal>
47 |                             <goal>build</goal>
48 |                         </goals>
49 |                     </execution>
50 |                 </executions>
51 |             </plugin>
52 |             <plugin>
53 |                 <groupId>org.codehaus.mojo</groupId>
54 |                 <artifactId>exec-maven-plugin</artifactId>
55 |                 <version>1.5.0</version>
56 |                 <executions>
57 |                     <execution>
58 |                         <goals>
59 |                             <goal>java</goal>
60 |                         </goals>
61 |                     </execution>
62 |                 </executions>
63 |                 <configuration>
64 |                     <mainClass>org.example.webapp.Main</mainClass>
65 |                 </configuration>
66 |             </plugin>
67 |         </plugins>
68 |     </build>
69 | </project>
70 | 


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/readme.adoc:
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 1 | = Kubernetes Maven Sample
 2 | 
 3 | This example will show how to deploy a Java application to a Kubernetes cluster using Maven. It requires to run a http://developer.couchbase.com/server[Couchbase server] that can be easily started on https://github.com/couchbase-guides/couchbase-amazon-cli[AWS] or using https://github.com/couchbase-guides/couchbase-docker[Docker].
 4 | 
 5 | == Main Targets
 6 | 
 7 | . `package`: Builds the WAR file
 8 | . `install`: Builds the WAR and Docker image using it
 9 | . `exec:java`: Runs the application with a Couchbase server running on `localhost`
10 | . `fabric8:apply`: Deploys the application to Kubernetes, require `install` target to be invoked first
11 | .. By default, the Kubernetes cluster is `localhost`. Set KUBERNETES_MASTER environment variable to point to Kubernetes master.
12 | 
13 | == Additional Targets
14 | 
15 | . `fabric8:build`: Builds the Docker image and generated Kubernetes resources
16 | . `fabric8:resource`: Generates the Kubernetes configuration file in `target/classes/META-INF/fabric8` directory
17 | . `fabric8:cluster-start`: Bootstrap a Kubernetes cluster using minikube (download, install and run)
18 | 
19 | More content on deploying your Java applications with Kubernetes at https://github.com/arun-gupta/kubernetes-java-sample/.
20 | 
21 | 


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/src/main/java/org/example/webapp/Database.java:
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 1 | package org.example.webapp;
 2 | 
 3 | import com.couchbase.client.java.Bucket;
 4 | import com.couchbase.client.java.CouchbaseCluster;
 5 | import java.util.concurrent.TimeUnit;
 6 | 
 7 | /**
 8 |  * @author arungupta
 9 |  */
10 | public class Database {
11 | 
12 |     static CouchbaseCluster cluster;
13 |     static Bucket bucket;
14 | 
15 |     public static final CouchbaseCluster getCluster() {
16 |         if (null == cluster) {
17 |             System.out.println(System.getenv());
18 |             String host = System.getenv("DB_URI");
19 |             if (null == host) {
20 |                 host = "localhost";
21 |                 System.out.println("Invalid host, setting to " + host);
22 |             }
23 |             System.out.println("Using host: " + host);
24 |             cluster = CouchbaseCluster.create(host);
25 |         }
26 |         return cluster;
27 |     }
28 | 
29 |     public static Bucket getBucket(String bucketName) {
30 |         if (null == bucket) {
31 |             bucket = getCluster().openBucket(bucketName, 30, TimeUnit.SECONDS);
32 |         }
33 |         return bucket;
34 |     }
35 | }
36 | 


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/src/main/java/org/example/webapp/Main.java:
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 1 | package org.example.webapp;
 2 | 
 3 | import com.couchbase.client.java.Bucket;
 4 | import com.couchbase.client.java.document.JsonDocument;
 5 | import com.couchbase.client.java.document.json.JsonObject;
 6 | 
 7 | /**
 8 |  * @arungupta
 9 |  */
10 | public class Main {
11 | 
12 |     public static void main(String[] args) {
13 |         Bucket bucket = Database.getBucket("books");
14 | 
15 |         JsonObject jsonObject = JsonObject.create();
16 |         jsonObject.put("isbn", "978-1-4919-1889-0");
17 |         jsonObject.put("name", "Minecraft Modding with Forge");
18 |         jsonObject.put("cost", "29.99");
19 |         JsonDocument document = JsonDocument.create("minecraft", jsonObject);
20 |         bucket.upsert(document);
21 | 
22 |         JsonDocument doc = bucket.get("minecraft");
23 |         System.out.println(doc.content());
24 |         
25 |         System.out.println("Hello World!");
26 |     }
27 | }
28 | 


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/src/main/webapp/WEB-INF/beans.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
3 |        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 |        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
5 |        bean-discovery-mode="all">
6 | </beans>
7 | 


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/src/main/webapp/index.jsp:
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 1 | <%@page contentType="text/html" pageEncoding="UTF-8"%>
 2 | <!DOCTYPE html>
 3 | <html>
 4 |     <head>
 5 |         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 6 |         <title>Hello Java EE 7 Continuous Delivery!</title>
 7 |     </head>
 8 |     <body>
 9 |         <h1>Hello Java EE 7 Continuous Delivery!</h1>
10 |         
11 |         GET all the <a href="${pageContext.request.contextPath}/resources/persons"/>persons</a>.
12 |     </body>
13 | </html>
14 | 


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