@SdkInternalApi
    final EventSubscription executeCreateEventSubscription(CreateEventSubscriptionRequest createEventSubscriptionRequest) {

        ExecutionContext executionContext = createExecutionContext(createEventSubscriptionRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<CreateEventSubscriptionRequest> request = null;
        Response<EventSubscription> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new CreateEventSubscriptionRequestMarshaller().marshall(super.beforeMarshalling(createEventSubscriptionRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.CLIENT_ENDPOINT, endpoint);
                request.addHandlerContext(HandlerContextKey.ENDPOINT_OVERRIDDEN, isEndpointOverridden());
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "RDS");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "CreateEventSubscription");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            StaxResponseHandler<EventSubscription> responseHandler = new StaxResponseHandler<EventSubscription>(new EventSubscriptionStaxUnmarshaller());

            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }
<p>
Creates an RDS event notification subscription. This operation requires a topic Amazon Resource Name (ARN)
created by either the RDS console, the SNS console, or the SNS API. To obtain an ARN with SNS, you must create a
topic in Amazon SNS and subscribe to the topic. The ARN is displayed in the SNS console.
</p>
<p>
You can specify the type of source (<code>SourceType</code>) that you want to be notified of and provide a list
of RDS sources (<code>SourceIds</code>) that triggers the events. You can also provide a list of event categories
(<code>EventCategories</code>) for events that you want to be notified of. For example, you can specify
<code>SourceType</code> = <code>db-instance</code>, <code>SourceIds</code> = <code>mydbinstance1</code>,
<code>mydbinstance2</code> and <code>EventCategories</code> = <code>Availability</code>, <code>Backup</code>.
</p>
<p>
If you specify both the <code>SourceType</code> and <code>SourceIds</code>, such as <code>SourceType</code> =
<code>db-instance</code> and <code>SourceIds</code> = <code>myDBInstance1</code>, you are notified of all the
<code>db-instance</code> events for the specified source. If you specify a <code>SourceType</code> but do not
specify <code>SourceIds</code>, you receive notice of the events for that source type for all your RDS sources.
If you don't specify either the SourceType or the <code>SourceIds</code>, you are notified of events generated
from all RDS sources belonging to your customer account.
</p>
<p>
For more information about subscribing to an event for RDS DB engines, see <a
href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Events.Subscribing.html"> Subscribing to Amazon
RDS event notification</a> in the <i>Amazon RDS User Guide</i>.
</p>
<p>
For more information about subscribing to an event for Aurora DB engines, see <a
href="https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/USER_Events.Subscribing.html"> Subscribing to
Amazon RDS event notification</a> in the <i>Amazon Aurora User Guide</i>.
</p>

@param createEventSubscriptionRequest
@return Result of the CreateEventSubscription operation returned by the service.
@throws EventSubscriptionQuotaExceededException
        You have reached the maximum number of event subscriptions.
@throws SubscriptionAlreadyExistException
        The supplied subscription name already exists.
@throws SNSInvalidTopicException
        SNS has responded that there is a problem with the SNS topic specified.
@throws SNSNoAuthorizationException
        You do not have permission to publish to the SNS topic ARN.
@throws SNSTopicArnNotFoundException
        The SNS topic ARN does not exist.
@throws SubscriptionCategoryNotFoundException
        The supplied category does not exist.
@throws SourceNotFoundException
        The requested source could not be found.
@sample AmazonRDS.CreateEventSubscription
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/CreateEventSubscription" target="_top">AWS
     API Documentation</a>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/AmazonRDSClient.java