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* 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.
*/
package org.jclouds.examples.rackspace.cloudservers;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Closeables;
import com.google.common.net.HostAndPort;
import com.google.inject.Module;
import org.jclouds.ContextBuilder;
import org.jclouds.compute.ComputeService;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.RunNodesException;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.domain.Template;
import org.jclouds.compute.options.RunScriptOptions;
import org.jclouds.openstack.nova.v2_0.domain.zonescoped.ZoneAndId;
import org.jclouds.predicates.SocketOpen;
import org.jclouds.scriptbuilder.ScriptBuilder;
import org.jclouds.scriptbuilder.domain.OsFamily;
import org.jclouds.sshj.config.SshjSshClientModule;
import java.io.Closeable;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.TimeoutException;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.jclouds.compute.config.ComputeServiceProperties.POLL_INITIAL_PERIOD;
import static org.jclouds.compute.config.ComputeServiceProperties.POLL_MAX_PERIOD;
import static org.jclouds.examples.rackspace.cloudservers.Constants.*;
import static org.jclouds.scriptbuilder.domain.Statements.exec;
import static org.jclouds.util.Predicates2.retry;
/**
* This example creates a server, start a web server on it, and publish a page on the internet!
*/
public class CloudServersPublish implements Closeable {
private final ComputeService computeService;
private final int numServers;
/**
* To get a username and API key see
* http://www.jclouds.org/documentation/quickstart/rackspace/
*
* The first argument (args[0]) must be your username
* The second argument (args[1]) must be your API key
* The optional third argument (args[2]) is the number of Cloud Servers to start
*/
public static void main(String[] args) throws IOException {
getPublishedCloudServers(Arrays.asList(args));
}
public static Set<? extends NodeMetadata> getPublishedCloudServers(List<String> args) throws IOException {
CloudServersPublish cloudServersPublish = new CloudServersPublish(args);
Set<? extends NodeMetadata> nodes = null;
try {
nodes = cloudServersPublish.createServer();
cloudServersPublish.configureAndStartWebserver(nodes);
return nodes;
}
catch (Exception e) {
e.printStackTrace();
}
finally {
cloudServersPublish.close();
}
return nodes;
}
public CloudServersPublish(List<String> args) {
String username = args.get(0);
String apiKey = args.get(1);
numServers = args.size() == 3 ? Integer.valueOf(args.get(2)) : 1;
Iterable<Module> modules = ImmutableSet.<Module> of(new SshjSshClientModule());
// These properties control how often jclouds polls for a status update
Properties overrides = new Properties();
overrides.setProperty(POLL_INITIAL_PERIOD, POLL_PERIOD_TWENTY_SECONDS);
overrides.setProperty(POLL_MAX_PERIOD, POLL_PERIOD_TWENTY_SECONDS);
ComputeServiceContext context = ContextBuilder.newBuilder(PROVIDER)
.credentials(username, apiKey)
.overrides(overrides)
.modules(modules)
.buildView(ComputeServiceContext.class);
computeService = context.getComputeService();
}
private Set<? extends NodeMetadata> createServer() throws RunNodesException, TimeoutException {
System.out.format("Create Server%n");
ZoneAndId zoneAndId = ZoneAndId.fromZoneAndId(ZONE, "performance1-1");
Template template = computeService.templateBuilder()
.locationId(ZONE)
.osDescriptionMatches(".*Ubuntu 12.04.*")
.hardwareId(zoneAndId.slashEncode())
.build();
// This method will continue to poll for the server status and won't return until this server is ACTIVE
// If you want to know what's happening during the polling, enable logging.
// See /jclouds-example/rackspace/src/main/java/org/jclouds/examples/rackspace/Logging.java
Set<? extends NodeMetadata> nodes = computeService.createNodesInGroup(NAME, numServers, template);
for (NodeMetadata nodeMetadata: nodes) {
System.out.format(" %s%n", nodeMetadata);
}
return nodes;
}
private void configureAndStartWebserver(Set<? extends NodeMetadata> nodes) throws TimeoutException {
for (NodeMetadata nodeMetadata: nodes) {
String publicAddress = nodeMetadata.getPublicAddresses().iterator().next();
String privateAddress = nodeMetadata.getPrivateAddresses().iterator().next();
System.out.format(" Configure And Start Webserver%n");
awaitSsh(publicAddress);
String message = new StringBuilder()
.append("Hello from ").append(nodeMetadata.getHostname())
.append(" @ ").append(publicAddress).append("/").append(privateAddress)
.append(" in ").append(nodeMetadata.getLocation().getParent().getId())
.toString();
String script = new ScriptBuilder()
.addStatement(exec("apt-get -q -y update"))
.addStatement(exec("apt-get -q -y install apache2"))
.addStatement(exec("echo '" + message + "' > /var/www/index.html"))
.render(OsFamily.UNIX);
RunScriptOptions options = RunScriptOptions.Builder.blockOnComplete(true);
computeService.runScriptOnNode(nodeMetadata.getId(), script, options);
System.out.format(" Login: ssh %s@%s%n", nodeMetadata.getCredentials().getUser(), publicAddress);
System.out.format(" Password: %s%n", nodeMetadata.getCredentials().getOptionalPassword().get());
System.out.format(" Go to http://%s%n", publicAddress);
}
}
private void awaitSsh(String ip) throws TimeoutException {
SocketOpen socketOpen = computeService.getContext().utils().injector().getInstance(SocketOpen.class);
Predicate<HostAndPort> socketTester = retry(socketOpen, 300, 5, 5, SECONDS);
socketTester.apply(HostAndPort.fromParts(ip, 22));
}
/**
* Always close your service when you're done with it.
*/
public void close() throws IOException {
Closeables.close(computeService.getContext(), true);
}
}