Java tutorial
/* * 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.autoscale; import static org.jclouds.examples.rackspace.autoscale.Constants.PROVIDER; import static org.jclouds.examples.rackspace.autoscale.Constants.REGION; import java.io.Closeable; import java.io.IOException; import java.util.concurrent.TimeUnit; import org.jclouds.ContextBuilder; import org.jclouds.rackspace.autoscale.v1.AutoscaleApi; import org.jclouds.rackspace.autoscale.v1.domain.Webhook; import org.jclouds.rackspace.autoscale.v1.features.GroupApi; import org.jclouds.rackspace.autoscale.v1.features.PolicyApi; import org.jclouds.rackspace.autoscale.v1.features.WebhookApi; import org.jclouds.rackspace.autoscale.v1.utils.AutoscaleUtils; import com.google.common.io.Closeables; import com.google.common.util.concurrent.Uninterruptibles; /** * This example executes a scaling policy in two ways: * - Authenticated API call using jclouds. * - Anonymously using just the webhook URL. */ public class ExecuteWebhook implements Closeable { private final AutoscaleApi autoscaleApi; private final PolicyApi policyApi; private final WebhookApi webhookApi; /** * To get a username and API key see * http://jclouds.apache.org/guides/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 { ExecuteWebhook executeWebhook = new ExecuteWebhook(args[0], args[1]); try { executeWebhook.executeWebhook(); } catch (Exception e) { e.printStackTrace(); } finally { executeWebhook.close(); } } public ExecuteWebhook(String username, String apiKey) { autoscaleApi = ContextBuilder.newBuilder(PROVIDER).credentials(username, apiKey) .buildApi(AutoscaleApi.class); GroupApi groupApi = autoscaleApi.getGroupApi(REGION); String groupId = Utils.getGroupId(groupApi); policyApi = autoscaleApi.getPolicyApi(REGION, groupId); String policyId = Utils.getPolicyId(policyApi); webhookApi = autoscaleApi.getWebhookApi(REGION, groupId, policyId); } private void executeWebhook() { System.out.format("Execute Webhook%n"); String policyId = Utils.getPolicyId(policyApi); Uninterruptibles.sleepUninterruptibly(10, TimeUnit.SECONDS); boolean result = policyApi.execute(policyId); System.out.format(" %s%n", result); System.out.format("Execute Webhook - again, anonymously%n"); Webhook webhook = webhookApi.list().first().get(); try { result = AutoscaleUtils.execute(webhook.getAnonymousExecutionURI().get()); } catch (IOException e) { e.printStackTrace(); } System.out.format(" %s%n", result); } /** * 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(autoscaleApi, true); } }