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/*
* ============LICENSE_START=========================================================
* dcae-analytics
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.openecomp.dcae.analytics.dmaap.service.publisher;
import org.openecomp.dcae.analytics.common.exception.DCAEAnalyticsRuntimeException;
import org.openecomp.dcae.analytics.dmaap.domain.config.DMaaPMRPublisherConfig;
import org.openecomp.dcae.analytics.dmaap.domain.response.DMaaPMRPublisherResponse;
import java.util.Date;
import java.util.List;
/**
* <p>
* DMaaP MR Publisher can be used to publish messages to DMaaP MR Topics.
* <p>
*
* @author Rajiv Singla. Creation Date: 10/13/2016.
*/
public interface DMaaPMRPublisher extends AutoCloseable {
/**
* <p>
* Adds collection of messages to DMaaP MR Topic Publishing Queue.
* <p>
* Note: Invoking this method may or may not cause publishing immediately
* as publishing in done is batch mode by default. Parameter maxBatchSize
* in {@link DMaaPMRPublisherConfig} is used to determine max batch queue size.
* If the maxBatchSize is reached all message will be published automatically
* during subsequent call.
* </p>
*
* @param messages messages to publish to DMaaP MR Publisher
* @return response which may contain Http Response code 202 (Accepted) as publishing
* will proceed when max batch size is reached
*
* @throws DCAEAnalyticsRuntimeException DCAEAnalyticsRuntimeException
*/
DMaaPMRPublisherResponse publish(List<String> messages) throws DCAEAnalyticsRuntimeException;
/**
* <p>
* Forces publishing of messages to DMaaP MR Topic and returns {@link DMaaPMRPublisherResponse}
* which can be inspected for HTTP status code of publishing call to DMaaP MR Topic.
* </p>
*
* @param messages messages to publish to DMaaP MR Publisher
* @return DMaaP Message Router Publisher Response
*
* @throws DCAEAnalyticsRuntimeException DCAEAnalyticsRuntimeException
*/
DMaaPMRPublisherResponse forcePublish(List<String> messages) throws DCAEAnalyticsRuntimeException;
/**
* <p>
* Forces publishing of messages in Publisher queue to DMaaP MR Topic and returns
* {@link DMaaPMRPublisherResponse}.If there are no messages were in the queue to
* be flushed response code 304 (Not Modified) will be returned
* </p>
*
* @return DMaaP Message Router Publisher Response
*/
DMaaPMRPublisherResponse flush();
/**
* <p>
* Returns the creation time when Publisher instance was created.
* <p>
*
* @return creation time of Subscriber instance
*/
Date getPublisherCreationTime();
}
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