/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds 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.cloudloadbalancers;
import static com.google.common.io.Closeables.closeQuietly;
import java.util.Set;
import java.util.concurrent.TimeoutException;
import org.jclouds.ContextBuilder;
import org.jclouds.rackspace.cloudloadbalancers.v1.CloudLoadBalancersApi;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.AddNode;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.LoadBalancer;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.Node;
import org.jclouds.rackspace.cloudloadbalancers.v1.features.LoadBalancerApi;
import org.jclouds.rackspace.cloudloadbalancers.v1.features.NodeApi;
import org.jclouds.rackspace.cloudloadbalancers.v1.predicates.LoadBalancerPredicates;
import com.google.common.collect.Sets;
/**
* This example adds a Node to a Load Balancer.
*
* @author Everett Toews
*/
public class AddNodes {
private CloudLoadBalancersApi clb;
private LoadBalancerApi lbApi;
/**
* 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
*/
public static void main(String[] args) {
AddNodes addNodes = new AddNodes();
try {
addNodes.init(args);
LoadBalancer loadBalancer = addNodes.getLoadBalancer();
Set<AddNode> addNodeSet = addNodes.createAddNodes();
addNodes.addNodesToLoadBalancer(addNodeSet, loadBalancer);
}
catch (Exception e) {
e.printStackTrace();
}
finally {
addNodes.close();
}
}
private void init(String[] args) {
// The provider configures jclouds To use the Rackspace Cloud (US)
// To use the Rackspace Cloud (UK) set the provider to "rackspace-cloudloadbalancers-uk"
String provider = "rackspace-cloudloadbalancers-us";
String username = args[0];
String apiKey = args[1];
clb = ContextBuilder.newBuilder(provider)
.credentials(username, apiKey)
.buildApi(CloudLoadBalancersApi.class);
lbApi = clb.getLoadBalancerApiForZone(Constants.ZONE);
}
private LoadBalancer getLoadBalancer() {
for (LoadBalancer loadBalancer: lbApi.list().concat()) {
if (loadBalancer.getName().startsWith(Constants.NAME)) {
return loadBalancer;
}
}
throw new RuntimeException(Constants.NAME + " not found. Run a CreateLoadBalancer* example first.");
}
/**
* AddNodes are the nodes (Cloud Servers) that receive requests sent from the Load Balancer.
*
* The IPv4 addresses in the AddNodes below are only *examples* of addresses that you would use when creating
* a Load Balancer. You would do this if you had existing Cloud Servers and stored their IPv4
* addresses as configuration data.
*/
private Set<AddNode> createAddNodes() {
AddNode addNode11 = AddNode.builder()
.address("10.180.1.1")
.condition(Node.Condition.DISABLED)
.port(80)
.weight(20)
.build();
AddNode addNode12 = AddNode.builder()
.address("10.180.1.2")
.condition(Node.Condition.ENABLED)
.port(80)
.weight(20)
.build();
return Sets.newHashSet(addNode11, addNode12);
}
/**
* If you try to visit the IPv4 address of the Load Balancer itself, you will see a "Service Unavailable" message
* because the nodes from the createNodeRequests() don't really exist.
*
* To see an example of creating Cloud Servers and a Load Balancer at the same time see
* CreateLoadBalancerWithNewServers.
*/
private void addNodesToLoadBalancer(Set<AddNode> addNodes, LoadBalancer loadBalancer) throws TimeoutException {
System.out.println("Add Nodes");
NodeApi nodeApi = clb.getNodeApiForZoneAndLoadBalancer(Constants.ZONE, loadBalancer.getId());
Set<Node> nodes = nodeApi.add(addNodes);
// Wait for the Load Balancer to become Active before moving on
// 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
if (!LoadBalancerPredicates.awaitAvailable(lbApi).apply(loadBalancer)) {
throw new TimeoutException("Timeout on loadBalancer: " + loadBalancer);
}
for (Node node: nodes) {
System.out.println(" " + node);
}
}
/**
* Always close your service when you're done with it.
*/
public void close() {
closeQuietly(clb);
}
}