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Add Compute examples and snippets. Add them to READMEs.
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‎README.md‎

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@@ -15,6 +15,7 @@ Java idiomatic client for [Google Cloud Platform][cloud-platform] services.
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This client supports the following Google Cloud Platform services:
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- [Google Cloud BigQuery] (#google-cloud-bigquery-alpha) (Alpha)
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- [Google Cloud Compute] (#google-cloud-compute-alpha) (Alpha)
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- [Google Cloud Datastore] (#google-cloud-datastore)
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- [Google Cloud Resource Manager] (#google-cloud-resource-manager-alpha) (Alpha)
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- [Google Cloud Storage] (#google-cloud-storage)
@@ -46,6 +47,8 @@ Example Applications
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- [`BigQueryExample`](./gcloud-java-examples/src/main/java/com/google/gcloud/examples/bigquery/BigQueryExample.java) - A simple command line interface providing some of Cloud BigQuery's functionality
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- Read more about using this application on the [`gcloud-java-examples` docs page](http://googlecloudplatform.github.io/gcloud-java/apidocs/?com/google/gcloud/examples/BigQueryExample.html).
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- [`ComputeExample`](./gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/ComputeExample.java) - A simple command line interface providing some of Cloud Compute's functionality
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- Read more about using this application on the [`gcloud-java-examples` docs page](http://googlecloudplatform.github.io/gcloud-java/apidocs/?com/google/gcloud/examples/compute/ComputeExample.html).
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- [`Bookshelf`](https://github.com/GoogleCloudPlatform/getting-started-java/tree/master/bookshelf) - An App Engine app that manages a virtual bookshelf.
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- This app uses `gcloud-java` to interface with Cloud Datastore and Cloud Storage. It also uses Cloud SQL, another Google Cloud Platform service.
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- [`DatastoreExample`](./gcloud-java-examples/src/main/java/com/google/gcloud/examples/datastore/DatastoreExample.java) - A simple command line interface for the Cloud Datastore
@@ -161,6 +164,78 @@ if (loadJob.status().error() != null) {
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}
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```
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Google Cloud Compute (Alpha)
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----------------------
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- [API Documentation][compute-api]
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- [Official Documentation][cloud-compute-docs]
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#### Preview
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Here are two code snippets showing simple usage examples from within Compute/App Engine. Note that
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you must [supply credentials](#authentication) and a project ID if running this snippet elsewhere.
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The first snippet shows how to create a snapshot from an existing disk. Complete source code can be
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found at
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[CreateSnapshot.java](./gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/snippets/CreateSnapshot.java).
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```java
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import com.google.gcloud.compute.Compute;
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import com.google.gcloud.compute.ComputeOptions;
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import com.google.gcloud.compute.Disk;
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import com.google.gcloud.compute.DiskId;
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import com.google.gcloud.compute.Operation;
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import com.google.gcloud.compute.Snapshot;
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Compute compute = ComputeOptions.defaultInstance().service();
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DiskId diskId = DiskId.of("us-central1-a", "disk-name");
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Disk disk = compute.getDisk(diskId, Compute.DiskOption.fields());
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if (disk != null) {
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String snapshotName = "disk-name-snapshot";
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Operation operation = disk.createSnapshot(snapshotName);
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while (!operation.isDone()) {
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Thread.sleep(1000L);
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}
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if (operation.errors() == null) {
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// use snapshot
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Snapshot snapshot = compute.getSnapshot("disk-name-snapshot");
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}
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}
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```
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The second snippet shows how to create a virtual machine instance. Complete source code can be found
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at
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[CreateInstance.java](./gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/snippets/CreateInstance.java).
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```java
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import com.google.gcloud.compute.AttachedDisk;
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import com.google.gcloud.compute.Compute;
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import com.google.gcloud.compute.ComputeOptions;
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import com.google.gcloud.compute.ImageId;
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import com.google.gcloud.compute.Instance;
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import com.google.gcloud.compute.InstanceId;
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import com.google.gcloud.compute.InstanceInfo;
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import com.google.gcloud.compute.MachineTypeId;
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import com.google.gcloud.compute.NetworkId;
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import com.google.gcloud.compute.NetworkInterface;
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import com.google.gcloud.compute.Operation;
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Compute compute = ComputeOptions.defaultInstance().service();
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ImageId imageId = ImageId.of("debian-cloud", "debian-8-jessie-v20160329");
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NetworkId networkId = NetworkId.of("default");
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AttachedDisk attachedDisk = AttachedDisk.of(AttachedDisk.CreateDiskConfiguration.of(imageId));
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NetworkInterface networkInterface = NetworkInterface.of(networkId);
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InstanceId instanceId = InstanceId.of("us-central1-a", "instance-name");
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MachineTypeId machineTypeId = MachineTypeId.of("us-central1-a", "n1-standard-1");
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Operation operation =
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compute.create(InstanceInfo.of(instanceId, machineTypeId, attachedDisk, networkInterface));
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while (!operation.isDone()) {
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Thread.sleep(1000L);
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}
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if (operation.errors() == null) {
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// use instance
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Instance instance = compute.getInstance(instanceId);
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}
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```
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Google Cloud Datastore
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----------------------
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@@ -374,3 +449,7 @@ Apache 2.0 - See [LICENSE] for more information.
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[cloud-bigquery]: https://cloud.google.com/bigquery/
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[cloud-bigquery-docs]: https://cloud.google.com/bigquery/docs/overview
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[bigquery-api]: http://googlecloudplatform.github.io/gcloud-java/apidocs/index.html?com/google/gcloud/bigquery/package-summary.html
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[cloud-compute]: https://cloud.google.com/compute/
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[cloud-compute-docs]: https://cloud.google.com/compute/docs/overview
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[compute-api]: http://googlecloudplatform.github.io/gcloud-java/apidocs/index.html?com/google/gcloud/compute/package-summary.html

‎gcloud-java-compute/README.md‎

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Google Cloud Java Client for Compute (Alpha)
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====================================
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Java idiomatic client for [Google Cloud Compute] (https://cloud.google.com/compute).
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Java idiomatic client for [Google Cloud Compute](https://cloud.google.com/compute).
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[![Build Status](https://travis-ci.org/GoogleCloudPlatform/gcloud-java.svg?branch=master)](https://travis-ci.org/GoogleCloudPlatform/gcloud-java)
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[![Coverage Status](https://coveralls.io/repos/GoogleCloudPlatform/gcloud-java/badge.svg?branch=master)](https://coveralls.io/r/GoogleCloudPlatform/gcloud-java?branch=master)
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<!-- TODO(mziccard): add in the maven shield once the artifact is pushed to maven -->
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[![Maven](https://img.shields.io/maven-central/v/com.google.cloud/gcloud-java-compute.svg)]( https://img.shields.io/maven-central/v/com.google.cloud/gcloud-java-compute.svg)
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[![Codacy Badge](https://api.codacy.com/project/badge/grade/9da006ad7c3a4fe1abd142e77c003917)](https://www.codacy.com/app/mziccard/gcloud-java)
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[![Dependency Status](https://www.versioneye.com/user/projects/56bd8ee72a29ed002d2b0969/badge.svg?style=flat)](https://www.versioneye.com/user/projects/56bd8ee72a29ed002d2b0969)
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- [Homepage] (https://googlecloudplatform.github.io/gcloud-java/)
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<!-- TODO(mziccard): add link to API documentation -->
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- [Homepage](https://googlecloudplatform.github.io/gcloud-java/)
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- [API Documentation](http://googlecloudplatform.github.io/gcloud-java/apidocs/index.html?com/google/gcloud/compute/package-summary.html)
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> Note: This client is a work-in-progress, and may occasionally
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> make backwards-incompatible changes.
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Example Application
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-------------------
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<!-- TODO(mziccard): add example application -->
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[`ComputeExample`](../gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/ComputeExample.java)
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is a simple command line interface that provides some of Google Cloud Compute Engine's
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functionality. Read more about using the application on the
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[`ComputeExample` docs page](http://googlecloudplatform.github.io/gcloud-java/apidocs/?com/google/gcloud/examples/compute/ComputeExample.html).
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Authentication
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--------------
@@ -51,7 +54,160 @@ with Google Cloud Compute using this Client Library.
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Getting Started
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---------------
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<!-- TODO(mziccard): add code snippet -->
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#### Prerequisites
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For this tutorial, you will need a [Google Developers Console](https://console.developers.google.com/)
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project with the Compute Engine API enabled. You will need to [enable billing](https://support.google.com/cloud/answer/6158867?hl=en)
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to use Google Cloud DNS. [Follow these instructions](https://cloud.google.com/docs/authentication#preparation)
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to get your project set up. You will also need to set up the local development environment by
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[installing the Google Cloud SDK](https://cloud.google.com/sdk/) and running the following commands
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in command line: `gcloud auth login` and `gcloud config set project [YOUR PROJECT ID]`.
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#### Installation and setup
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You'll need to obtain the `gcloud-java-compute` library. See the [Quickstart](#quickstart) section
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to add `gcloud-java-compute` as a dependency in your code.
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#### Creating an authorized service object
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To make authenticated requests to Google Cloud Compute Engine, you must create a service object with
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credentials. You can then make API calls by calling methods on the Compute service object. The
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simplest way to authenticate is to use [Application Default Credentials](https://developers.google.com/identity/protocols/application-default-credentials).
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These credentials are automatically inferred from your environment, so you only need the following
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code to create your service object:
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```java
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import com.google.gcloud.compute.Compute;
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import com.google.gcloud.compute.ComputeOptions;
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Compute compute = ComputeOptions.defaultInstance().service();
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```
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For other authentication options, see the [Authentication](https://github.com/GoogleCloudPlatform/gcloud-java#authentication)
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page.
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#### Creating a region IP address
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An external region IP address can be associated to a Google Compute Engine instance to communicate
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with instances in different regions or to communicate with the instance from ouside of Compute
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Engine. In this code snippet, we will create a new external region address.
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Add the following imports at the top of your file:
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```java
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import com.google.gcloud.compute.AddressInfo;
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import com.google.gcloud.compute.Operation;
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import com.google.gcloud.compute.RegionAddressId;
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```
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Then add the following code to create an address. Most Compute Engine calls return an `Operation`
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object that can be used to wait for operation completion and to check whether operation failed or
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succeeded:
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```java
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RegionAddressId addressId = RegionAddressId.of("us-central1", "test-address");
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Operation operation = compute.create(AddressInfo.of(addressId));
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while (!operation.isDone()) {
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Thread.sleep(1000L);
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}
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operation = operation.reload();
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if (operation.errors() == null) {
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System.out.println("Address " + addressId + " was successfully created");
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} else {
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// inspect operation.errors()
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throw new RuntimeException("Address creation failed");
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}
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```
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#### Creating a persistent disk
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A persistent disk can be used as primary storage for your virtual machine instances. Persistent
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disks can be created empty, from a disk image or from a disk snapshot. Compute Engine offers
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[publicly-available images](https://cloud.google.com/compute/docs/operating-systems/) of certain
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operating systems that you can use. In this code snippet, we will create a new persistent disk from
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a publicly-available image.
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Add the following imports at the top of your file:
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```java
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import com.google.gcloud.compute.DiskInfo;
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import com.google.gcloud.compute.DiskId;
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import com.google.gcloud.compute.ImageDiskConfiguration;
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import com.google.gcloud.compute.ImageId;
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```
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Then add the following code to create a disk and wait for disk creation to terminate.
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```java
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ImageId imageId = ImageId.of("debian-cloud", "debian-8-jessie-v20160329");
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DiskId diskId = DiskId.of("us-central1-a", "test-disk");
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ImageDiskConfiguration diskConfiguration = ImageDiskConfiguration.of(imageId);
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DiskInfo disk = DiskInfo.of(diskId, diskConfiguration);
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Operation operation = compute.create(disk);
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while (!operation.isDone()) {
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Thread.sleep(1000L);
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}
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operation = operation.reload();
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if (operation.errors() == null) {
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System.out.println("Disk " + diskId + " was successfully created");
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} else {
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// inspect operation.errors()
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throw new RuntimeException("Disk creation failed");
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}
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```
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#### Creating a virtual machine instance
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An Google Compute Engine instance is a virtual machine (VM) hosted on Google's infrastructure. An
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instance can be created given it's identity, a machine type, one boot disk and a network interface.
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In this code snippet, we will create a virtual machine instance in the default network using as a
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boot disk the disk we have just created and assigning to it the just created IP address.
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Add the following imports at the top of your file:
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```java
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import com.google.gcloud.compute.AttachedDisk;
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import com.google.gcloud.compute.AttachedDisk.PersistentDiskConfiguration;
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import com.google.gcloud.compute.InstanceId;
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import com.google.gcloud.compute.InstanceInfo;
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import com.google.gcloud.compute.MachineTypeId;
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import com.google.gcloud.compute.NetworkConfiguration;
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import com.google.gcloud.compute.NetworkConfiguration.AccessConfig;
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import com.google.gcloud.compute.NetworkId;
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import com.google.gcloud.compute.NetworkInterface;
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```
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Then add the following code to create an instance and wait for instance creation to terminate.
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```java
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Address externalIp = compute.getAddress(addressId);
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InstanceId instanceId = InstanceId.of("us-central1-a", "test-instance");
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NetworkId networkId = NetworkId.of("default");
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PersistentDiskConfiguration attachConfiguration =
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PersistentDiskConfiguration.builder(diskId).boot(true).build();
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AttachedDisk attachedDisk = AttachedDisk.of("dev0", attachConfiguration);
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NetworkInterface networkInterface = NetworkInterface.builder(networkId)
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.accessConfigurations(AccessConfig.of(externalIp.address()))
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.build();
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MachineTypeId machineTypeId = MachineTypeId.of("us-central1-a", "n1-standard-1");
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InstanceInfo instance =
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InstanceInfo.of(instanceId, machineTypeId, attachedDisk, networkInterface);
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Operation operation = compute.create(instance);
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while (!operation.isDone()) {
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Thread.sleep(1000L);
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}
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operation = operation.reload();
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if (operation.errors() == null) {
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System.out.println("Instance " + instanceId + " was successfully created");
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} else {
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// inspect operation.errors()
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throw new RuntimeException("Instance creation failed");
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}
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```
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#### Complete source code
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In
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[CreateAddressDiskAndInstance.java](../gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/snippets/CreateAddressDiskAndInstance.java)
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we put together all the code shown above into one program. The program assumes that you are
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running on Compute Engine or from your own desktop. To run the example on App Engine, simply move
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the code from the main method to your application's servlet class and change the print statements to
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display on your webpage.
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Troubleshooting
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---------------
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Versioning
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----------
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This library follows [Semantic Versioning] (http://semver.org/).
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This library follows [Semantic Versioning](http://semver.org/).
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It is currently in major version zero (``0.y.z``), which means that anything
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may change at any time and the public API should not be considered

‎gcloud-java-compute/src/main/java/com/google/gcloud/compute/package-info.java‎

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/*
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* Copyright 2016 Google Inc. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* A client to Google Cloud Compute.
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*
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* <p>Here's a simple usage example for using gcloud-java from App/Compute Engine. This example
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* shows how to create a snapshot from an existing disk. For the complete source code see
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* <a href="https://github.com/GoogleCloudPlatform/gcloud-java/tree/master/gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/snippets/CreateSnapshot.java">
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* CreateSnapshot.java</a>.
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* <pre> {@code
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* Compute compute = ComputeOptions.defaultInstance().service();
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* DiskId diskId = DiskId.of("us-central1-a", "disk-name");
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* Disk disk = compute.getDisk(diskId, Compute.DiskOption.fields());
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* if (disk != null) {
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* String snapshotName = "disk-name-snapshot";
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* Operation operation = disk.createSnapshot(snapshotName);
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* while (!operation.isDone()) {
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* Thread.sleep(1000L);
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* }
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* if (operation.errors() == null) {
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* // use snapshot
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* Snapshot snapshot = compute.getSnapshot("disk-name-snapshot");
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* }
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* }}</pre>
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* <p>This second example shows how to create a virtual machine instance. Complete source code can
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* be found at
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* <a href="https://github.com/GoogleCloudPlatform/gcloud-java/tree/master/gcloud-java-examples/src/main/java/com/google/gcloud/examples/compute/snippets/CreateInstance.java">
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* CreateInstance.java</a>.
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* <pre> {@code
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* Compute compute = ComputeOptions.defaultInstance().service();
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* ImageId imageId = ImageId.of("debian-cloud", "debian-8-jessie-v20160329");
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* NetworkId networkId = NetworkId.of("default");
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* AttachedDisk attachedDisk = AttachedDisk.of(AttachedDisk.CreateDiskConfiguration.of(imageId));
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* NetworkInterface networkInterface = NetworkInterface.of(networkId);
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* InstanceId instanceId = InstanceId.of("us-central1-a", "instance-name");
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* MachineTypeId machineTypeId = MachineTypeId.of("us-central1-a", "n1-standard-1");
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* Operation operation =
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* compute.create(InstanceInfo.of(instanceId, machineTypeId, attachedDisk, networkInterface));
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* while (!operation.isDone()) {
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* Thread.sleep(1000L);
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* }
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* if (operation.errors() == null) {
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* // use instance
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* Instance instance = compute.getInstance(instanceId);
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* }}</pre>
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*
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* @see <a href="https://cloud.google.com/compute/">Google Cloud Compute</a>
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*/
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package com.google.gcloud.compute;

‎gcloud-java-examples/README.md‎

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mvn exec:java -Dexec.mainClass="com.google.gcloud.examples.bigquery.BigQueryExample" -Dexec.args="query 'select * from new_dataset_id.new_table_id'"
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```
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* Here's an example run of `ComputeExample`.
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Before running the example, go to the [Google Developers Console][developers-console] to ensure
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that Compute API is enabled.
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```
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mvn exec:java -Dexec.mainClass="com.google.gcloud.examples.compute.ComputeExample" -Dexec.args="create image-disk us-central1-a test-disk debian-cloud debian-8-jessie-v20160329"
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mvn exec:java -Dexec.mainClass="com.google.gcloud.examples.compute.ComputeExample" -Dexec.args="create instance us-central1-a test-instance n1-standard-1 test-disk default"
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mvn exec:java -Dexec.mainClass="com.google.gcloud.examples.compute.ComputeExample" -Dexec.args="add-access-config us-central1-a test-instance nic0 NAT"
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mvn exec:java -Dexec.mainClass="com.google.gcloud.examples.compute.ComputeExample" -Dexec.args="delete instance us-central1-a test-instance"
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mvn exec:java -Dexec.mainClass="com.google.gcloud.examples.compute.ComputeExample" -Dexec.args="delete disk us-central1-a test-disk"
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```
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* Here's an example run of `DatastoreExample`.
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Be sure to change the placeholder project ID "your-project-id" with your own project ID. Also note that you have to enable the Google Cloud Datastore API on the [Google Developers Console][developers-console] before running the following commands.

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