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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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