Package com.google.appengine.v1

Class InstancesClient

  • All Implemented Interfaces:
    com.google.api.gax.core.BackgroundResource, AutoCloseable
    @Generated("by gapic-generator-java")
public class InstancesClient
extends Object
implements com.google.api.gax.core.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.newHttpJsonBuilder().build();
 InstancesClient instancesClient = InstancesClient.create(instancesSettings);

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

    • Constructor Detail

      • InstancesClient

        protected InstancesClient​(InstancesSettings settings)
                   throws IOException
        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.
        Throws:
        IOException

      • InstancesClient

        protected InstancesClient​(InstancesStub stub)

    • Method Detail

      • create

        public static final InstancesClient create​(InstancesSettings settings)
                                    throws IOException
        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.
        Throws:
        IOException

      • create

        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).

      • getOperationsClient

        public final com.google.longrunning.OperationsClient getOperationsClient()
        Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

      • getHttpJsonOperationsClient

        @BetaApi
public final com.google.api.gax.httpjson.longrunning.OperationsClient getHttpJsonOperationsClient()
        Returns the OperationsClient that can be used to query the status of a long-running operation returned by another API method call.

      • listInstances

        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](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).

        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);
   }
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • listInstancesPagedCallable

        public final com.google.api.gax.rpc.UnaryCallable<ListInstancesRequest,​InstancesClient.ListInstancesPagedResponse> listInstancesPagedCallable()
        Lists the instances of a version.

        Tip: To aggregate details about instances over time, see the [Stackdriver Monitoring API](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).

        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);
   }
 }

      • listInstancesCallable

        public final com.google.api.gax.rpc.UnaryCallable<ListInstancesRequest,​ListInstancesResponse> listInstancesCallable()
        Lists the instances of a version.

        Tip: To aggregate details about instances over time, see the [Stackdriver Monitoring API](https://cloud.google.com/monitoring/api/ref_v3/rest/v3/projects.timeSeries/list).

        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;
     }
   }
 }

      • getInstance

        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);
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • getInstanceCallable

        public final com.google.api.gax.rpc.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();
 }

      • deleteInstanceAsync

        public final com.google.api.gax.longrunning.OperationFuture<com.google.protobuf.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](https://cloud.google.com/appengine/docs/standard/python/how-instances-are-managed) | [flexible environment](https://cloud.google.com/appengine/docs/flexible/python/how-instances-are-managed)).

        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`](https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1/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();
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • deleteInstanceOperationCallable

        public final com.google.api.gax.rpc.OperationCallable<DeleteInstanceRequest,​com.google.protobuf.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](https://cloud.google.com/appengine/docs/standard/python/how-instances-are-managed) | [flexible environment](https://cloud.google.com/appengine/docs/flexible/python/how-instances-are-managed)).

        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`](https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1/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();
 }

      • deleteInstanceCallable

        public final com.google.api.gax.rpc.UnaryCallable<DeleteInstanceRequest,​com.google.longrunning.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](https://cloud.google.com/appengine/docs/standard/python/how-instances-are-managed) | [flexible environment](https://cloud.google.com/appengine/docs/flexible/python/how-instances-are-managed)).

        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`](https://cloud.google.com/appengine/docs/admin-api/reference/rest/v1/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();
 }

      • debugInstanceAsync

        public final com.google.api.gax.longrunning.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();
 }
        Parameters:
        request - The request object containing all of the parameters for the API call.
        Throws:
        com.google.api.gax.rpc.ApiException - if the remote call fails

      • debugInstanceOperationCallable

        public final com.google.api.gax.rpc.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();
 }

      • debugInstanceCallable

        public final com.google.api.gax.rpc.UnaryCallable<DebugInstanceRequest,​com.google.longrunning.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();
 }

      • shutdown

        public void shutdown()
        Specified by:
        shutdown in interface com.google.api.gax.core.BackgroundResource

      • isShutdown

        public boolean isShutdown()
        Specified by:
        isShutdown in interface com.google.api.gax.core.BackgroundResource

      • isTerminated

        public boolean isTerminated()
        Specified by:
        isTerminated in interface com.google.api.gax.core.BackgroundResource

      • shutdownNow

        public void shutdownNow()
        Specified by:
        shutdownNow in interface com.google.api.gax.core.BackgroundResource