Authenticating the jclouds Java SDK with OpenStack or Rackspace and listing servers in all regions

A_README.md

List Servers with OpenStack or Rackspace

Make a directory and copy all of the files below into it then run the following commands.

mvn dependency:copy-dependencies "-DoutputDirectory=./lib"

javac -classpath ".:lib/*" ListServersRackspace.java
java -classpath ".:lib/*" ListServersRackspace $RS_USERNAME $RS_API_KEY

javac -classpath ".:lib/*" ListServersOpenStack.java
java -classpath ".:lib/*" ListServersOpenStack $OS_AUTH_URL $OS_PROJECT_NAME $OS_USERNAME $OS_PASSWORD

An example OS_AUTH_URL looks like http://xxx.xxx.xxx.xxx:5000/v2.0/

ListServersOpenStack.java

import com.google.common.collect.ImmutableSet;
import com.google.common.io.Closeables;
import com.google.inject.Module;
import org.jclouds.ContextBuilder;
import org.jclouds.logging.slf4j.config.SLF4JLoggingModule;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.domain.Server;
import org.jclouds.openstack.nova.v2_0.features.ServerApi;

import java.io.Closeable;
import java.io.IOException;
import java.util.Set;

public class ListServersOpenStack implements Closeable {
    private final NovaApi novaApi;
    private final Set<String> regions;

   /**
    * The first argument (args[0]) must be your OpenStack endpoint
    * The second argument (args[1]) must be your project
    * The third argument (args[2]) must be your username
    * The fourth argument (args[3]) must be your password
    */
    public static void main(String[] args) throws IOException {
        String endpoint = args[0];
        String project = args[1];
        String username = args[2];
        String password = args[3];

        ListServersOpenStack listServersOpenStack = new ListServersOpenStack(endpoint, project, username, password);

        try {
            listServersOpenStack.listServers();
            listServersOpenStack.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            listServersOpenStack.close();
        }
    }

    public ListServersOpenStack(String endpoint, String project, String username, String password) {
        Iterable<Module> modules = ImmutableSet.<Module>of(new SLF4JLoggingModule());

       novaApi = ContextBuilder.newBuilder("openstack-nova")
                .endpoint(endpoint)
                .credentials(project + ":" + username, password)
                .modules(modules)
                .buildApi(NovaApi.class);

        regions = novaApi.getConfiguredRegions();
    }

    private void listServers() {
        for (String region : regions) {
            ServerApi serverApi = novaApi.getServerApi(region);

            System.out.println("Servers in " + region);

            for (Server server : serverApi.listInDetail().concat()) {
                System.out.println("  " + server);
            }
        }
    }

    public void close() throws IOException {
        Closeables.close(novaApi, true);
    }
}

ListServersRackspace.java

import com.google.common.collect.ImmutableSet;
import com.google.common.io.Closeables;
import com.google.inject.Module;
import org.jclouds.ContextBuilder;
import org.jclouds.logging.slf4j.config.SLF4JLoggingModule;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.domain.Server;
import org.jclouds.openstack.nova.v2_0.features.ServerApi;

import java.io.Closeable;
import java.io.IOException;
import java.util.Set;

public class ListServersRackspace implements Closeable {
    private final NovaApi novaApi;
    private final Set<String> regions;

   /**
    * The first argument (args[0]) must be your username
    * The second argument (args[1]) must be your API key
    */
    public static void main(String[] args) throws IOException {
        String username = args[0];
        String apiKey = args[1];

        ListServersRackspace listServersRackspace = new ListServersRackspace(username, apiKey);

        try {
            listServersRackspace.listServers();
            listServersRackspace.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            listServersRackspace.close();
        }
    }

    public ListServersRackspace(String username, String apiKey) {
        Iterable<Module> modules = ImmutableSet.<Module>of(new SLF4JLoggingModule());

        novaApi = ContextBuilder.newBuilder("rackspace-cloudservers-us")
            .credentials(username, apiKey)
            .modules(modules)
            .buildApi(NovaApi.class);

        regions = novaApi.getConfiguredRegions();
    }

    private void listServers() {
        for (String region : regions) {
            ServerApi serverApi = novaApi.getServerApi(region);

            System.out.println("Servers in " + region);

            for (Server server : serverApi.listInDetail().concat()) {
                System.out.println("  " + server);
            }
        }
    }

    public void close() throws IOException {
        Closeables.close(novaApi, true);
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--

    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
    The ASF licenses this file to You under the Apache License, Version 2.0
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

-->
<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>
  <groupId>org.apache.jclouds.examples</groupId>
  <artifactId>rackspace-examples</artifactId>
  <version>1.9.1</version>
  <name>rackspace-examples</name>

  <properties>
    <jclouds.version>1.9.1</jclouds.version>
  </properties>

  <dependencies>
    <!-- jclouds dependencies -->
    <dependency>
      <groupId>org.apache.jclouds.driver</groupId>
      <artifactId>jclouds-slf4j</artifactId>
      <version>${jclouds.version}</version>
    </dependency>
    <dependency>
      <groupId>org.apache.jclouds.driver</groupId>
      <artifactId>jclouds-sshj</artifactId>
      <version>${jclouds.version}</version>
    </dependency>
    <!-- Rackspace US dependencies -->
    <dependency>
      <groupId>org.apache.jclouds.provider</groupId>
      <artifactId>rackspace-cloudservers-us</artifactId>
      <version>${jclouds.version}</version>
    </dependency>
    <!-- 3rd party dependencies -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.0.13</version>
    </dependency>
    <dependency>
      <groupId>com.google.auto.service</groupId>
      <artifactId>auto-service</artifactId>
      <version>1.0-rc2</version>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version>
        <configuration>
          <encoding>${project.build.sourceEncoding}</encoding>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>