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StartInstance.java
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StartInstance.java
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/*
* Copyright 2021 Google LLC
*
* 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.
*/
package compute;
// [START compute_start_instance]
import com.google.api.gax.longrunning.OperationFuture;
import com.google.cloud.compute.v1.InstancesClient;
import com.google.cloud.compute.v1.Operation;
import com.google.cloud.compute.v1.Operation.Status;
import com.google.cloud.compute.v1.StartInstanceRequest;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
public class StartInstance {
public static void main(String[] args)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
// TODO(developer): Replace these variables before running the sample.
/* project: project ID or project number of the Cloud project your instance belongs to.
zone: name of the zone your instance belongs to.
instanceName: name of the instance your want to start. */
String project = "your-project-id";
String zone = "zone-name";
String instanceName = "instance-name";
startInstance(project, zone, instanceName);
}
// Starts a stopped Google Compute Engine instance (with unencrypted disks).
public static void startInstance(String project, String zone, String instanceName)
throws IOException, ExecutionException, InterruptedException, TimeoutException {
/* Initialize client that will be used to send requests. This client only needs to be created
once, and can be reused for multiple requests. After completing all of your requests, call
the `instancesClient.close()` method on the client to safely
clean up any remaining background resources. */
try (InstancesClient instancesClient = InstancesClient.create()) {
// Create the request.
StartInstanceRequest startInstanceRequest = StartInstanceRequest.newBuilder()
.setProject(project)
.setZone(zone)
.setInstance(instanceName)
.build();
OperationFuture<Operation, Operation> operation = instancesClient.startAsync(
startInstanceRequest);
// Wait for the operation to complete.
Operation response = operation.get(3, TimeUnit.MINUTES);
if (response.getStatus() == Status.DONE) {
System.out.println("Instance started successfully ! ");
}
}
}
}
// [END compute_start_instance]