Class InstancesClient (2.4.0) 

public class InstancesClient implements BackgroundResource

Service Description: Manages instances of a version.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   GetInstanceRequest request = GetInstanceRequest.newBuilder().setName("name3373707").build();
   Instance response = instancesClient.getInstance(request);
 }

Note: close() needs to be called on the InstancesClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

  1. A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
  2. A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
  3. A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of InstancesSettings to create(). For example:

To customize credentials:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 InstancesSettings instancesSettings =
     InstancesSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 InstancesClient instancesClient = InstancesClient.create(instancesSettings);

To customize the endpoint:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 InstancesSettings instancesSettings =
     InstancesSettings.newBuilder().setEndpoint(myEndpoint).build();
 InstancesClient instancesClient = InstancesClient.create(instancesSettings);

To use REST (HTTP1.1/JSON) transport (instead of gRPC) for sending and receiving requests over the wire:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 InstancesSettings instancesSettings =
     InstancesSettings.newBuilder()
         .setTransportChannelProvider(
             InstancesSettings.defaultHttpJsonTransportProviderBuilder().build())
         .build();
 InstancesClient instancesClient = InstancesClient.create(instancesSettings);

Please refer to the GitHub repository's samples for more quickstart code snippets.

Inheritance

java.lang.Object > InstancesClient

Implements

BackgroundResource

Static Methods

create()

public static final InstancesClient create()

Constructs an instance of InstancesClient with default settings.

Returns
TypeDescription
InstancesClient
Exceptions
TypeDescription
IOException

create(InstancesSettings settings)

public static final InstancesClient create(InstancesSettings settings)

Constructs an instance of InstancesClient, using the given settings. The channels are created based on the settings passed in, or defaults for any settings that are not set.

Parameter
NameDescription
settingsInstancesSettings
Returns
TypeDescription
InstancesClient
Exceptions
TypeDescription
IOException

create(InstancesStub stub)

public static final InstancesClient create(InstancesStub stub)

Constructs an instance of InstancesClient, using the given stub for making calls. This is for advanced usage - prefer using create(InstancesSettings).

Parameter
NameDescription
stubInstancesStub
Returns
TypeDescription
InstancesClient

Constructors

InstancesClient(InstancesSettings settings)

protected InstancesClient(InstancesSettings settings)

Constructs an instance of InstancesClient, using the given settings. This is protected so that it is easy to make a subclass, but otherwise, the static factory methods should be preferred.

Parameter
NameDescription
settingsInstancesSettings

InstancesClient(InstancesStub stub)

protected InstancesClient(InstancesStub stub)
Parameter
NameDescription
stubInstancesStub

Methods

awaitTermination(long duration, TimeUnit unit)

public boolean awaitTermination(long duration, TimeUnit unit)
Parameters
NameDescription
durationlong
unitTimeUnit
Returns
TypeDescription
boolean
Exceptions
TypeDescription
InterruptedException

close()

public final void close()

debugInstanceAsync(DebugInstanceRequest request)

public final OperationFuture<Instance,OperationMetadataV1> debugInstanceAsync(DebugInstanceRequest request)

Enables debugging on a VM instance. This allows you to use the SSH command to connect to the virtual machine where the instance lives. While in "debug mode", the instance continues to serve live traffic. You should delete the instance when you are done debugging and then allow the system to take over and determine if another instance should be started.

Only applicable for instances in App Engine flexible environment.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   DebugInstanceRequest request =
       DebugInstanceRequest.newBuilder()
           .setName("name3373707")
           .setSshKey("sshKey-893236425")
           .build();
   Instance response = instancesClient.debugInstanceAsync(request).get();
 }
Parameter
NameDescription
requestDebugInstanceRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
OperationFuture<Instance,OperationMetadataV1>

debugInstanceCallable()

public final UnaryCallable<DebugInstanceRequest,Operation> debugInstanceCallable()

Enables debugging on a VM instance. This allows you to use the SSH command to connect to the virtual machine where the instance lives. While in "debug mode", the instance continues to serve live traffic. You should delete the instance when you are done debugging and then allow the system to take over and determine if another instance should be started.

Only applicable for instances in App Engine flexible environment.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   DebugInstanceRequest request =
       DebugInstanceRequest.newBuilder()
           .setName("name3373707")
           .setSshKey("sshKey-893236425")
           .build();
   ApiFuture<Operation> future = instancesClient.debugInstanceCallable().futureCall(request);
   // Do something.
   Operation response = future.get();
 }
Returns
TypeDescription
UnaryCallable<DebugInstanceRequest,Operation>

debugInstanceOperationCallable()

public final OperationCallable<DebugInstanceRequest,Instance,OperationMetadataV1> debugInstanceOperationCallable()

Enables debugging on a VM instance. This allows you to use the SSH command to connect to the virtual machine where the instance lives. While in "debug mode", the instance continues to serve live traffic. You should delete the instance when you are done debugging and then allow the system to take over and determine if another instance should be started.

Only applicable for instances in App Engine flexible environment.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   DebugInstanceRequest request =
       DebugInstanceRequest.newBuilder()
           .setName("name3373707")
           .setSshKey("sshKey-893236425")
           .build();
   OperationFuture<Instance, OperationMetadataV1> future =
       instancesClient.debugInstanceOperationCallable().futureCall(request);
   // Do something.
   Instance response = future.get();
 }
Returns
TypeDescription
OperationCallable<DebugInstanceRequest,Instance,OperationMetadataV1>

deleteInstanceAsync(DeleteInstanceRequest request)

public final OperationFuture<Empty,OperationMetadataV1> deleteInstanceAsync(DeleteInstanceRequest request)

Stops a running instance.

The instance might be automatically recreated based on the scaling settings of the version. For more information, see "How Instances are Managed" (standard environment | flexible environment).

To ensure that instances are not re-created and avoid getting billed, you can stop all instances within the target version by changing the serving status of the version to STOPPED with the apps.services.versions.patch method.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   DeleteInstanceRequest request =
       DeleteInstanceRequest.newBuilder().setName("name3373707").build();
   instancesClient.deleteInstanceAsync(request).get();
 }
Parameter
NameDescription
requestDeleteInstanceRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
OperationFuture<Empty,OperationMetadataV1>

deleteInstanceCallable()

public final UnaryCallable<DeleteInstanceRequest,Operation> deleteInstanceCallable()

Stops a running instance.

The instance might be automatically recreated based on the scaling settings of the version. For more information, see "How Instances are Managed" (standard environment | flexible environment).

To ensure that instances are not re-created and avoid getting billed, you can stop all instances within the target version by changing the serving status of the version to STOPPED with the apps.services.versions.patch method.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   DeleteInstanceRequest request =
       DeleteInstanceRequest.newBuilder().setName("name3373707").build();
   ApiFuture<Operation> future = instancesClient.deleteInstanceCallable().futureCall(request);
   // Do something.
   future.get();
 }
Returns
TypeDescription
UnaryCallable<DeleteInstanceRequest,Operation>

deleteInstanceOperationCallable()

public final OperationCallable<DeleteInstanceRequest,Empty,OperationMetadataV1> deleteInstanceOperationCallable()

Stops a running instance.

The instance might be automatically recreated based on the scaling settings of the version. For more information, see "How Instances are Managed" (standard environment | flexible environment).

To ensure that instances are not re-created and avoid getting billed, you can stop all instances within the target version by changing the serving status of the version to STOPPED with the apps.services.versions.patch method.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   DeleteInstanceRequest request =
       DeleteInstanceRequest.newBuilder().setName("name3373707").build();
   OperationFuture<Empty, OperationMetadataV1> future =
       instancesClient.deleteInstanceOperationCallable().futureCall(request);
   // Do something.
   future.get();
 }
Returns
TypeDescription
OperationCallable<DeleteInstanceRequest,Empty,OperationMetadataV1>

getHttpJsonOperationsClient()

public final OperationsClient getHttpJsonOperationsClient()

Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

Returns
TypeDescription
OperationsClient

getInstance(GetInstanceRequest request)

public final Instance getInstance(GetInstanceRequest request)

Gets instance information.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   GetInstanceRequest request = GetInstanceRequest.newBuilder().setName("name3373707").build();
   Instance response = instancesClient.getInstance(request);
 }
Parameter
NameDescription
requestGetInstanceRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
Instance

getInstanceCallable()

public final UnaryCallable<GetInstanceRequest,Instance> getInstanceCallable()

Gets instance information.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   GetInstanceRequest request = GetInstanceRequest.newBuilder().setName("name3373707").build();
   ApiFuture<Instance> future = instancesClient.getInstanceCallable().futureCall(request);
   // Do something.
   Instance response = future.get();
 }
Returns
TypeDescription
UnaryCallable<GetInstanceRequest,Instance>

getOperationsClient()

public final OperationsClient getOperationsClient()

Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

Returns
TypeDescription
OperationsClient

getSettings()

public final InstancesSettings getSettings()
Returns
TypeDescription
InstancesSettings

getStub()

public InstancesStub getStub()
Returns
TypeDescription
InstancesStub

isShutdown()

public boolean isShutdown()
Returns
TypeDescription
boolean

isTerminated()

public boolean isTerminated()
Returns
TypeDescription
boolean

listInstances(ListInstancesRequest request)

public final InstancesClient.ListInstancesPagedResponse listInstances(ListInstancesRequest request)

Lists the instances of a version.

Tip: To aggregate details about instances over time, see the Stackdriver Monitoring API.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   ListInstancesRequest request =
       ListInstancesRequest.newBuilder()
           .setParent("parent-995424086")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   for (Instance element : instancesClient.listInstances(request).iterateAll()) {
     // doThingsWith(element);
   }
 }
Parameter
NameDescription
requestListInstancesRequest

The request object containing all of the parameters for the API call.

Returns
TypeDescription
InstancesClient.ListInstancesPagedResponse

listInstancesCallable()

public final UnaryCallable<ListInstancesRequest,ListInstancesResponse> listInstancesCallable()

Lists the instances of a version.

Tip: To aggregate details about instances over time, see the Stackdriver Monitoring API.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   ListInstancesRequest request =
       ListInstancesRequest.newBuilder()
           .setParent("parent-995424086")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   while (true) {
     ListInstancesResponse response = instancesClient.listInstancesCallable().call(request);
     for (Instance element : response.getInstancesList()) {
       // doThingsWith(element);
     }
     String nextPageToken = response.getNextPageToken();
     if (!Strings.isNullOrEmpty(nextPageToken)) {
       request = request.toBuilder().setPageToken(nextPageToken).build();
     } else {
       break;
     }
   }
 }
Returns
TypeDescription
UnaryCallable<ListInstancesRequest,ListInstancesResponse>

listInstancesPagedCallable()

public final UnaryCallable<ListInstancesRequest,InstancesClient.ListInstancesPagedResponse> listInstancesPagedCallable()

Lists the instances of a version.

Tip: To aggregate details about instances over time, see the Stackdriver Monitoring API.

Sample code:


 // This snippet has been automatically generated and should be regarded as a code template only.
 // It will require modifications to work:
 // - It may require correct/in-range values for request initialization.
 // - It may require specifying regional endpoints when creating the service client as shown in
 // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
 try (InstancesClient instancesClient = InstancesClient.create()) {
   ListInstancesRequest request =
       ListInstancesRequest.newBuilder()
           .setParent("parent-995424086")
           .setPageSize(883849137)
           .setPageToken("pageToken873572522")
           .build();
   ApiFuture<Instance> future = instancesClient.listInstancesPagedCallable().futureCall(request);
   // Do something.
   for (Instance element : future.get().iterateAll()) {
     // doThingsWith(element);
   }
 }
Returns
TypeDescription
UnaryCallable<ListInstancesRequest,ListInstancesPagedResponse>

shutdown()

public void shutdown()

shutdownNow()

public void shutdownNow()