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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.adapter.message;
import java.util.List;
public 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.
*/
List<String> fetch();
/**
* Gets a batch of messages from the topic.
*
* @param waitMs
* The amount of time to wait in milliseconds if the topic is empty for data to be written. Should be no
* less than 15000ms to prevent too many requests
* @param limit
* The amount of messages to fetch
* @return A list of strings representing the messages pulled from the topic.
*/
List<String> fetch(int waitMs, int limit);
/**
* Updates the api credentials for making authenticated requests.
*
* @param apiKey
* The public key to authenticate with
* @param apiSecret
* The secret key to authenticate with
*/
void updateCredentials(String apiKey, String apiSecret);
/**
* Creates a dmaap client using a https connection
*
* @param yes
* True if https should be used, false otherwise.
*/
default void useHttps(boolean yes) {}
/**
* Closes the dmaap client https connection.
*/
default void close() {}
}
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