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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.client.impl.protocol;
import java.io.IOException;
import java.util.List;
interface Consumer {
/**
* Gets a batch of messages from the topic. Defaults to 1000 messages with 15s wait for messages if empty.
*
* @return A list of strings representing the messages pulled from the topic.
* @throws IOException
*/
List<String> fetch() throws IOException;
/**
* Gets a batch of messages from the topic.
*
* @param limit The amount of messages to fetch
* @return A list of strings representing the messages pulled from the topic.
* @throws IOException
*/
List<String> fetch(int limit) throws IOException;
/**
* Send dummy fetch request to register client to be able to fetch messages
* @throws IOException
*/
void registerForRead() throws IOException;
void close();
}
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