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Adding ResourceManagerExample, update docs
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Ajay Kannan
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Dec 18, 2015
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gcloud-java-examples/src/main/java/com/google/gcloud/examples/ResourceManagerExample.java
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| /* | ||
| * Copyright 2015 Google Inc. All Rights Reserved. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
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| package com.google.gcloud.examples; | ||
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| import com.google.gcloud.resourcemanager.ProjectInfo; | ||
| import com.google.gcloud.resourcemanager.ResourceManager; | ||
| import com.google.gcloud.resourcemanager.ResourceManagerOptions; | ||
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| import java.util.Arrays; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| /** | ||
| * An example of using the Google Cloud Resource Manager. | ||
| * <p> | ||
| * This example creates, gets, and lists projects. | ||
| * <p> | ||
| * Steps needed for running the example:<ol> | ||
| * <li>login using gcloud SDK - {@code gcloud auth login}.</li> | ||
| * <li>compile using maven - {@code mvn compile}</li> | ||
| * <li>run using maven - {@code mvn exec:java | ||
| * -Dexec.mainClass="com.google.gcloud.examples.ResourceManagerExample" | ||
| * -Dexec.args="[create|get|list projectId]"}</li> | ||
| * </ol> | ||
| */ | ||
| public class ResourceManagerExample { | ||
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| private static final String DEFAULT_ACTION = "list"; | ||
| private static final Map<String, ResourceManagerAction> ACTIONS = new HashMap<>(); | ||
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| private interface ResourceManagerAction { | ||
| void run(ResourceManager resourceManager, String... args); | ||
| String getRequiredParams(); | ||
| } | ||
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| private static class CreateAction implements ResourceManagerAction { | ||
| @Override | ||
| public void run(ResourceManager resourceManager, String... args) { | ||
| if (args.length > 0) { | ||
| String projectId = args[0]; | ||
| ProjectInfo project = resourceManager.create(ProjectInfo.builder(projectId).build()); | ||
| System.out.printf( | ||
| "Successfully created project '%s': %s.%n", projectId, projectDetails(project)); | ||
| } else { | ||
| System.out.println("Error: must supply a globally unique project ID for your new project."); | ||
| } | ||
| } | ||
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| @Override | ||
| public String getRequiredParams() { | ||
| return "projectId"; | ||
| } | ||
| } | ||
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| private static class GetAction implements ResourceManagerAction { | ||
| @Override | ||
| public void run(ResourceManager resourceManager, String... args) { | ||
| if (args.length > 0) { | ||
| String projectId = args[0]; | ||
| ProjectInfo project = resourceManager.get(projectId); | ||
| if (project != null) { | ||
| System.out.printf( | ||
| "Successfully got project '%s': %s.%n", projectId, projectDetails(project)); | ||
| } else { | ||
| System.out.printf("Could not find project '%s'.%n", projectId); | ||
| } | ||
| } else { | ||
| System.out.println( | ||
| "Error: must supply a project ID corresponding to a project for which you have viewing" | ||
| + " permissions. You can create a project and then call get using the same project ID" | ||
| + " if you have no other projects to use in this test."); | ||
| } | ||
| } | ||
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| @Override | ||
| public String getRequiredParams() { | ||
| return "projectId"; | ||
| } | ||
| } | ||
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| private static class ListAction implements ResourceManagerAction { | ||
| @Override | ||
| public void run(ResourceManager resourceManager, String... args) { | ||
| System.out.println("Projects you can view:"); | ||
| for (ProjectInfo project : resourceManager.list().values()) { | ||
| System.out.println(projectDetails(project)); | ||
| } | ||
| } | ||
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| @Override | ||
| public String getRequiredParams() { | ||
| return ""; | ||
| } | ||
| } | ||
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| static { | ||
| ACTIONS.put("create", new CreateAction()); | ||
| ACTIONS.put("get", new GetAction()); | ||
| ACTIONS.put("list", new ListAction()); | ||
| } | ||
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| private static String projectDetails(ProjectInfo project) { | ||
| return "{projectId:" + project.projectId() + ", projectNumber:" + project.projectNumber() | ||
| + ", createTimeMillis:" + project.createTimeMillis() + ", state:" + project.state() + "}"; | ||
| } | ||
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| public static void main(String... args) { | ||
| String actionName = args.length > 0 ? args[0].toLowerCase() : DEFAULT_ACTION; | ||
| ResourceManagerAction action = ACTIONS.get(actionName); | ||
| if (action == null) { | ||
| StringBuilder actionAndParams = new StringBuilder(); | ||
| for (Map.Entry<String, ResourceManagerAction> entry : ACTIONS.entrySet()) { | ||
| actionAndParams.append(entry.getKey()); | ||
| String param = entry.getValue().getRequiredParams(); | ||
| if (param != null && !param.isEmpty()) { | ||
| actionAndParams.append(' ').append(param); | ||
| } | ||
| actionAndParams.append('|'); | ||
| } | ||
| actionAndParams.setLength(actionAndParams.length() - 1); | ||
| System.out.printf( | ||
| "Usage: %s [%s]%n", ResourceManagerExample.class.getSimpleName(), actionAndParams); | ||
| return; | ||
| } | ||
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| // If you want to access a local Resource Manager emulator (after creating and starting the | ||
| // LocalResourceManagerHelper), use the following code instead: | ||
| // ResourceManager resourceManager = LocalResourceManagerHelper.options().service(); | ||
| ResourceManager resourceManager = ResourceManagerOptions.defaultInstance().service(); | ||
| args = args.length > 1 ? Arrays.copyOfRange(args, 1, args.length) : new String[] {}; | ||
| action.run(resourceManager, args); | ||
| } | ||
| } |
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