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/*-
* ============LICENSE_START=======================================================
* PolicyEngineUtils
* ================================================================================
* Copyright (C) 2017, 2019 AT&T Intellectual Property. All rights reserved.
* Modifications copyright (c) 2019 Nokia
* ================================================================================
* 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.onap.policy.utils;
import java.net.MalformedURLException;
import java.util.List;
import java.util.Properties;
import org.onap.dmaap.mr.client.MRClient.MRApiException;
import org.onap.dmaap.mr.client.impl.MRConsumerImpl;
import org.onap.dmaap.mr.test.clients.ProtocolTypeConstants;
public interface BusConsumer {
/**
* fetch messages.
*
* @return list of messages
* @throws MRApiException when error encountered by underlying libraries
*/
Iterable<String> fetch() throws MRApiException;
/**
* close underlying library consumer.
*/
void close();
/**
* MR based consumer.
*/
class DmaapConsumerWrapper implements BusConsumer {
/**
* MR Consumer.
*/
protected MRConsumerImpl consumer;
/**
* MR Consumer Wrapper.
*
* @param servers messaging bus hosts
* @param topic topic
* @param apiKey API Key
* @param apiSecret API Secret
* @param aafLogin AAF Login
* @param aafPassword AAF Password
* @param consumerGroup Consumer Group
* @param consumerInstance Consumer Instance
* @param fetchTimeout Fetch Timeout
* @param fetchLimit Fetch Limit
*/
public DmaapConsumerWrapper(List<String> servers, String topic, String aafLogin, String aafPassword,
String consumerGroup, String consumerInstance, int fetchTimeout, int fetchLimit)
throws MalformedURLException {
this(new MRConsumerImpl(servers, topic, consumerGroup, consumerInstance, fetchTimeout, fetchLimit, null,
aafLogin, aafPassword), aafLogin, aafPassword, servers.get(0));
}
DmaapConsumerWrapper(MRConsumerImpl consumer, String aafLogin, String aafPassword, String host) {
this.consumer = consumer;
this.consumer.setUsername(aafLogin);
this.consumer.setPassword(aafPassword);
this.consumer.setProtocolFlag(ProtocolTypeConstants.AAF_AUTH.getValue());
this.consumer.setHost(host + ":3904");
Properties props = new Properties();
props.setProperty("Protocol", "http");
this.consumer.setProps(props);
}
/**
* {@inheritDoc}
*/
@Override
public Iterable<String> fetch() throws MRApiException {
try {
return consumer.fetch();
} catch (Exception e) {
throw new MRApiException("Error during MR consumer Fetch ", e);
}
}
/**
* {@inheritDoc}
*/
@Override
public void close() {
this.consumer.close();
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("DmaapConsumerWrapper [").append("consumer.getAuthDate()=").append(consumer.getAuthDate())
.append(", consumer.getAuthKey()=").append(consumer.getAuthKey()).append(", consumer.getHost()=")
.append(consumer.getHost()).append(", consumer.getProtocolFlag()=")
.append(consumer.getProtocolFlag()).append(", consumer.getUsername()=")
.append(consumer.getUsername()).append("]");
return builder.toString();
}
}
}
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