| /* |
| * 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.cloudloadbalancers; |
| |
| import com.google.common.collect.Sets; |
| import com.google.common.io.Closeables; |
| import org.jclouds.ContextBuilder; |
| import org.jclouds.rackspace.cloudloadbalancers.v1.CloudLoadBalancersApi; |
| import org.jclouds.rackspace.cloudloadbalancers.v1.domain.*; |
| import org.jclouds.rackspace.cloudloadbalancers.v1.features.LoadBalancerApi; |
| import org.jclouds.rackspace.cloudloadbalancers.v1.predicates.LoadBalancerPredicates; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.concurrent.TimeoutException; |
| |
| import static org.jclouds.examples.rackspace.cloudloadbalancers.Constants.NAME; |
| import static org.jclouds.examples.rackspace.cloudloadbalancers.Constants.PROVIDER; |
| import static org.jclouds.examples.rackspace.cloudloadbalancers.Constants.ZONE; |
| import static org.jclouds.rackspace.cloudloadbalancers.v1.domain.VirtualIP.Type.PUBLIC; |
| import static org.jclouds.rackspace.cloudloadbalancers.v1.domain.internal.BaseLoadBalancer.Algorithm.WEIGHTED_LEAST_CONNECTIONS; |
| import static org.jclouds.rackspace.cloudloadbalancers.v1.domain.internal.BaseNode.Condition.ENABLED; |
| |
| /** |
| * This example creates a Load Balancer with existing Cloud Servers on the Rackspace Cloud. |
| * |
| */ |
| public class CreateLoadBalancerWithExistingServers implements Closeable { |
| private final CloudLoadBalancersApi clbApi; |
| private final 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) throws IOException { |
| CreateLoadBalancerWithExistingServers createLoadBalancer = new CreateLoadBalancerWithExistingServers(args[0], args[1]); |
| |
| try { |
| Set<AddNode> addNodes = createLoadBalancer.createNodeRequests(); |
| createLoadBalancer.createLoadBalancer(addNodes); |
| } |
| catch (Exception e) { |
| e.printStackTrace(); |
| } |
| finally { |
| createLoadBalancer.close(); |
| } |
| } |
| |
| public CreateLoadBalancerWithExistingServers(String username, String apiKey) { |
| clbApi = ContextBuilder.newBuilder(PROVIDER) |
| .credentials(username, apiKey) |
| .buildApi(CloudLoadBalancersApi.class); |
| lbApi = clbApi.getLoadBalancerApiForZone(ZONE); |
| } |
| |
| /** |
| * AddNodes specify the nodes (Cloud Servers) that requests will be sent to by the Load Balancer. |
| * |
| * The IPv4 addresses in the NodeRequests 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> createNodeRequests() { |
| AddNode addNode01 = AddNode.builder() |
| .address("10.180.0.1") |
| .condition(ENABLED) |
| .port(80) |
| .weight(20) |
| .build(); |
| |
| AddNode addNode02 = AddNode.builder() |
| .address("10.180.0.2") |
| .condition(ENABLED) |
| .port(80) |
| .weight(10) |
| .build(); |
| |
| return Sets.newHashSet(addNode01, addNode02); |
| } |
| |
| /** |
| * 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 createLoadBalancer(Set<AddNode> addNodes) throws TimeoutException { |
| System.out.format("Create Cloud Load Balancer%n"); |
| |
| CreateLoadBalancer createLB = CreateLoadBalancer.builder() |
| .name(NAME) |
| .protocol("HTTP") |
| .port(80) |
| .algorithm(WEIGHTED_LEAST_CONNECTIONS) |
| .nodes(addNodes) |
| .virtualIPType(PUBLIC) |
| .build(); |
| |
| LoadBalancer loadBalancer = lbApi.create(createLB); |
| |
| // 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); |
| } |
| |
| System.out.format(" %s%n", loadBalancer); |
| System.out.format(" Go to http://%s%n", getVirtualIPv4(loadBalancer.getVirtualIPs())); |
| } |
| |
| private String getVirtualIPv4(Set<VirtualIPWithId> set) { |
| for (VirtualIPWithId virtualIP: set) { |
| if (virtualIP.getType().equals(PUBLIC) && |
| virtualIP.getIpVersion().equals(VirtualIP.IPVersion.IPV4)) { |
| return virtualIP.getAddress(); |
| } |
| } |
| |
| throw new RuntimeException("Public IPv4 address not found."); |
| } |
| |
| /** |
| * Always close your service when you're done with it. |
| * |
| * Note that closing quietly like this is not necessary in Java 7. |
| * You would use try-with-resources in the main method instead. |
| */ |
| public void close() throws IOException { |
| Closeables.close(clbApi, true); |
| } |
| } |