Class SubscriberServiceClient (1.15.0)

Service Description: The service that a subscriber client application uses to receive messages from subscriptions.

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 (SubscriberServiceClient subscriberServiceClient = SubscriberServiceClient.create()) {
   BidiStream<SubscribeRequest, SubscribeResponse> bidiStream =
       subscriberServiceClient.subscribeCallable().call();
   SubscribeRequest request = SubscribeRequest.newBuilder().build();
   bidiStream.send(request);
   for (SubscribeResponse response : bidiStream) {
     // Do something when a response is received.
   }
 }

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

Methods
Method	Description	Method Variants
Subscribe	Establishes a stream with the server for receiving messages.	Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service. subscribeCallable()

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 SubscriberServiceSettings 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
 SubscriberServiceSettings subscriberServiceSettings =
     SubscriberServiceSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 SubscriberServiceClient subscriberServiceClient =
     SubscriberServiceClient.create(subscriberServiceSettings);

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
 SubscriberServiceSettings subscriberServiceSettings =
     SubscriberServiceSettings.newBuilder().setEndpoint(myEndpoint).build();
 SubscriberServiceClient subscriberServiceClient =
     SubscriberServiceClient.create(subscriberServiceSettings);

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

Inheritance

java.lang.Object > SubscriberServiceClient

Static Methods

create()

public static final SubscriberServiceClient create()

Constructs an instance of SubscriberServiceClient with default settings.

Returns
Type	Description
`SubscriberServiceClient`

Exceptions
Type	Description
`IOException`

create(SubscriberServiceSettings settings)

public static final SubscriberServiceClient create(SubscriberServiceSettings settings)

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

Parameter
Name	Description
`settings`	`SubscriberServiceSettings`

Returns
Type	Description
`SubscriberServiceClient`

Exceptions
Type	Description
`IOException`

create(SubscriberServiceStub stub)

public static final SubscriberServiceClient create(SubscriberServiceStub stub)

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

Parameter
Name	Description
`stub`	`SubscriberServiceStub`

Returns
Type	Description
`SubscriberServiceClient`

Constructors

SubscriberServiceClient(SubscriberServiceSettings settings)

protected SubscriberServiceClient(SubscriberServiceSettings settings)

Constructs an instance of SubscriberServiceClient, 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
Name	Description
`settings`	`SubscriberServiceSettings`

SubscriberServiceClient(SubscriberServiceStub stub)

protected SubscriberServiceClient(SubscriberServiceStub stub)

Parameter
Name	Description
`stub`	`SubscriberServiceStub`

Methods

awaitTermination(long duration, TimeUnit unit)

public boolean awaitTermination(long duration, TimeUnit unit)

Parameters
Name	Description
`duration`	`long`
`unit`	`TimeUnit`

Returns
Type	Description
`boolean`

Exceptions
Type	Description
`InterruptedException`

close()

public final void close()

getSettings()

public final SubscriberServiceSettings getSettings()

Returns
Type	Description
`SubscriberServiceSettings`

getStub()

public SubscriberServiceStub getStub()

Returns
Type	Description
`SubscriberServiceStub`

isShutdown()

public boolean isShutdown()

Returns
Type	Description
`boolean`

isTerminated()

public boolean isTerminated()

Returns
Type	Description
`boolean`

shutdown()

public void shutdown()

shutdownNow()

public void shutdownNow()

subscribeCallable()

public final BidiStreamingCallable<SubscribeRequest,SubscribeResponse> subscribeCallable()

Establishes a stream with the server for receiving messages.

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 (SubscriberServiceClient subscriberServiceClient = SubscriberServiceClient.create()) {
   BidiStream<SubscribeRequest, SubscribeResponse> bidiStream =
       subscriberServiceClient.subscribeCallable().call();
   SubscribeRequest request = SubscribeRequest.newBuilder().build();
   bidiStream.send(request);
   for (SubscribeResponse response : bidiStream) {
     // Do something when a response is received.
   }
 }

Returns
Type	Description
`BidiStreamingCallable<SubscribeRequest,SubscribeResponse>`