Class PublisherClient (0.55.0)

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GitHub Repository

Product Reference

REST Documentation

RPC Documentation

Service Description: Eventarc processes events generated by an event provider and delivers them to a subscriber.

An event provider is a software-as-a-service (SaaS) system or product that can generate and deliver events through Eventarc.

A third-party event provider is an event provider from outside of Google.

A partner is a third-party event provider that is integrated with Eventarc.

A subscriber is a GCP customer interested in receiving events.

Channel is a first-class Eventarc resource that is created and managed by the subscriber in their GCP project. A Channel represents a subscriber's intent to receive events from an event provider. A Channel is associated with exactly one event provider.

ChannelConnection is a first-class Eventarc resource that is created and managed by the partner in their GCP project. A ChannelConnection represents a connection between a partner and a subscriber's Channel. A ChannelConnection has a one-to-one mapping with a Channel.

Publisher allows an event provider to publish events to Eventarc.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishChannelConnectionEventsRequest request =
       PublishChannelConnectionEventsRequest.newBuilder()
           .setChannelConnection("channelConnection-1932021695")
           .addAllEvents(new ArrayList<Any>())
           .addAllTextEvents(new ArrayList<String>())
           .build();
   PublishChannelConnectionEventsResponse response =
       publisherClient.publishChannelConnectionEvents(request);
 }
 

Note: close() needs to be called on the PublisherClient 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
PublishChannelConnectionEvents	Publish events to a ChannelConnection in a partner's project.	Request object method variants only take one parameter, a request object, which must be constructed before the call. publishChannelConnectionEvents(PublishChannelConnectionEventsRequest request) Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service. publishChannelConnectionEventsCallable()
PublishEvents	Publish events to a subscriber's channel.	Request object method variants only take one parameter, a request object, which must be constructed before the call. publishEvents(PublishEventsRequest request) Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service. publishEventsCallable()
Publish	Publish events to a message bus.	Request object method variants only take one parameter, a request object, which must be constructed before the call. publish(PublishRequest request) Callable method variants take no parameters and return an immutable API callable object, which can be used to initiate calls to the service. publishCallable()

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 PublisherSettings 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
 PublisherSettings publisherSettings =
     PublisherSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 PublisherClient publisherClient = PublisherClient.create(publisherSettings);
 

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
 PublisherSettings publisherSettings =
     PublisherSettings.newBuilder().setEndpoint(myEndpoint).build();
 PublisherClient publisherClient = PublisherClient.create(publisherSettings);
 

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
 PublisherSettings publisherSettings = PublisherSettings.newHttpJsonBuilder().build();
 PublisherClient publisherClient = PublisherClient.create(publisherSettings);
 

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

Inheritance

java.lang.Object > PublisherClient

Static Methods

create()

public static final PublisherClient create()

Constructs an instance of PublisherClient with default settings.

Returns
Type	Description
PublisherClient

Exceptions
Type	Description
IOException

create(PublisherSettings settings)

public static final PublisherClient create(PublisherSettings settings)

Constructs an instance of PublisherClient, 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	PublisherSettings

Returns
Type	Description
PublisherClient

Exceptions
Type	Description
IOException

create(PublisherStub stub)

public static final PublisherClient create(PublisherStub stub)

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

Parameter
Name	Description
stub	PublisherStub

Returns
Type	Description
PublisherClient

Constructors

PublisherClient(PublisherSettings settings)

protected PublisherClient(PublisherSettings settings)

Constructs an instance of PublisherClient, 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	PublisherSettings

PublisherClient(PublisherStub stub)

protected PublisherClient(PublisherStub stub)

Parameter
Name	Description
stub	PublisherStub

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 PublisherSettings getSettings()

Returns
Type	Description
PublisherSettings

getStub()

public PublisherStub getStub()

Returns
Type	Description
PublisherStub

isShutdown()

public boolean isShutdown()

Returns
Type	Description
boolean

isTerminated()

public boolean isTerminated()

Returns
Type	Description
boolean

publish(PublishRequest request)

public final PublishResponse publish(PublishRequest request)

Publish events to a message bus.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishRequest request =
       PublishRequest.newBuilder().setMessageBus("messageBus-1690749703").build();
   PublishResponse response = publisherClient.publish(request);
 }
 

Parameter
Name	Description
request	PublishRequest The request object containing all of the parameters for the API call.

Returns
Type	Description
PublishResponse

publishCallable()

public final UnaryCallable<PublishRequest,PublishResponse> publishCallable()

Publish events to a message bus.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishRequest request =
       PublishRequest.newBuilder().setMessageBus("messageBus-1690749703").build();
   ApiFuture<PublishResponse> future = publisherClient.publishCallable().futureCall(request);
   // Do something.
   PublishResponse response = future.get();
 }
 

Returns
Type	Description
UnaryCallable<PublishRequest,PublishResponse>

publishChannelConnectionEvents(PublishChannelConnectionEventsRequest request)

public final PublishChannelConnectionEventsResponse publishChannelConnectionEvents(PublishChannelConnectionEventsRequest request)

Publish events to a ChannelConnection in a partner's project.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishChannelConnectionEventsRequest request =
       PublishChannelConnectionEventsRequest.newBuilder()
           .setChannelConnection("channelConnection-1932021695")
           .addAllEvents(new ArrayList<Any>())
           .addAllTextEvents(new ArrayList<String>())
           .build();
   PublishChannelConnectionEventsResponse response =
       publisherClient.publishChannelConnectionEvents(request);
 }
 

Parameter
Name	Description
request	PublishChannelConnectionEventsRequest The request object containing all of the parameters for the API call.

Returns
Type	Description
PublishChannelConnectionEventsResponse

publishChannelConnectionEventsCallable()

public final UnaryCallable<PublishChannelConnectionEventsRequest,PublishChannelConnectionEventsResponse> publishChannelConnectionEventsCallable()

Publish events to a ChannelConnection in a partner's project.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishChannelConnectionEventsRequest request =
       PublishChannelConnectionEventsRequest.newBuilder()
           .setChannelConnection("channelConnection-1932021695")
           .addAllEvents(new ArrayList<Any>())
           .addAllTextEvents(new ArrayList<String>())
           .build();
   ApiFuture<PublishChannelConnectionEventsResponse> future =
       publisherClient.publishChannelConnectionEventsCallable().futureCall(request);
   // Do something.
   PublishChannelConnectionEventsResponse response = future.get();
 }
 

Returns
Type	Description
UnaryCallable<PublishChannelConnectionEventsRequest,PublishChannelConnectionEventsResponse>

publishEvents(PublishEventsRequest request)

public final PublishEventsResponse publishEvents(PublishEventsRequest request)

Publish events to a subscriber's channel.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishEventsRequest request =
       PublishEventsRequest.newBuilder()
           .setChannel("channel738950403")
           .addAllEvents(new ArrayList<Any>())
           .addAllTextEvents(new ArrayList<String>())
           .build();
   PublishEventsResponse response = publisherClient.publishEvents(request);
 }
 

Parameter
Name	Description
request	PublishEventsRequest The request object containing all of the parameters for the API call.

Returns
Type	Description
PublishEventsResponse

publishEventsCallable()

public final UnaryCallable<PublishEventsRequest,PublishEventsResponse> publishEventsCallable()

Publish events to a subscriber's channel.

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 (PublisherClient publisherClient = PublisherClient.create()) {
   PublishEventsRequest request =
       PublishEventsRequest.newBuilder()
           .setChannel("channel738950403")
           .addAllEvents(new ArrayList<Any>())
           .addAllTextEvents(new ArrayList<String>())
           .build();
   ApiFuture<PublishEventsResponse> future =
       publisherClient.publishEventsCallable().futureCall(request);
   // Do something.
   PublishEventsResponse response = future.get();
 }
 

Returns
Type	Description
UnaryCallable<PublishEventsRequest,PublishEventsResponse>

shutdown()

public void shutdown()

shutdownNow()

public void shutdownNow()