2 * ===============================LICENSE_START======================================
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4 * ================================================================================
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5 * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
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6 * ================================================================================
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7 * Licensed under the Apache License, Version 2.0 (the "License");
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8 * you may not use this file except in compliance with the License.
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9 * You may obtain a copy of the License at
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11 * http://www.apache.org/licenses/LICENSE-2.0
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13 * Unless required by applicable law or agreed to in writing, software
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 * See the License for the specific language governing permissions and
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17 * limitations under the License.
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18 * ============================LICENSE_END===========================================
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21 package org.openecomp.dcae.apod.analytics.dmaap.service.subscriber;
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23 import org.openecomp.dcae.apod.analytics.dmaap.domain.config.DMaaPMRPublisherConfig;
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24 import org.openecomp.dcae.apod.analytics.dmaap.domain.response.DMaaPMRSubscriberResponse;
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26 import java.util.Date;
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30 * DMaaP MR Subscriber can be used to subscribe messages from DMaaP MR Topics.
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33 * @author Rajiv Singla . Creation Date: 10/13/2016.
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35 public interface DMaaPMRSubscriber extends AutoCloseable {
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38 * Fetches Messages from DMaaP MR Topic. {@link DMaaPMRPublisherConfig} settings parameters
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39 * for messageLimit and message timeout are used
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41 * @return DMaaP Message Router Subscriber Response
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43 DMaaPMRSubscriberResponse fetchMessages();
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47 * Returns the Subscriber instance creation time
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49 * NOTE: Due to DMaaP API Design - Subscribers can only fetch messages which
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50 * are published to the topic after the creation of the Subscriber.
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52 * @return creation time of Subscriber instance
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54 Date getSubscriberCreationTime();
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