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/*
* ============LICENSE_START=======================================================
* ONAP : DCAE
* ================================================================================
* Copyright 2018 TechMahindra
*=================================================================================
* 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.universalvesadapter.service;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
import org.onap.universalvesadapter.configs.DMaapMrUrlConfiguration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
//import com.att.nsa.mr.client.MRBatchingPublisher;
//import com.att.nsa.mr.client.MRClientFactory;
//import com.att.nsa.mr.client.MRConsumer;
/**
*
* This service will handle all the communication with the DMaap MR API
*
*
* @author kmalbari
*
*/
@Component
public class DMaapService {
@Autowired
private DMaapMrUrlConfiguration dmaapMrUrlObject;
// private MRConsumer cc;
//
// private MRBatchingPublisher pub;
/**
* reads the messages on DMaap MR Topic
*
* @return iterable of messages that will be received on DMaap MR Topic
*
* @throws DMaapException
*/
/*public Iterable<String> consumeFromDMaap() throws DMaapException{
if(null == cc){
try {
cc = MRClientFactory.createConsumer (dmaapMrUrlObject.getConsumerProperties());
} catch (IOException exception) {
throw new DMaapException("Problem creating consumer \nReason : " + exception.getMessage());
}
try {
return cc.fetch();
} catch (Exception exception) {
throw new DMaapException("Problem while fetching messaged from consumer \nReason : " + exception.getMessage());
}
}
return () -> Collections.emptyIterator();
}*/
/**
* sends the messages to DMaap MR Topic
*
*
* @throws DMaapException
*/
/*public void publishToDMaap() throws DMaapException{
if(null == cc){
try {
pub = MRClientFactory.createBatchingPublisher (dmaapMrUrlObject.getPublisherProperties());
} catch (IOException exception) {
throw new DMaapException("Problem creating consumer \nReason : " + exception.getMessage());
}
}
}*/
/**
* @return
*/
public String consume(){
URL url;
StringBuffer incomingJson = null;
incomingJson = new StringBuffer();
try {
url = new URL(dmaapMrUrlObject.getUrl());
//open the connection to the above URL.
URLConnection urlcon = url.openConnection();
Map<String, List<String>> header = urlcon.getHeaderFields();
//print all the fields along with their value.
for (Map.Entry<String, List<String>> mp : header.entrySet())
{
System.out.print(mp.getKey() + " : ");
System.out.println(mp.getValue().toString());
}
System.out.println();
System.out.println("Complete source code of the URL is-");
System.out.println("---------------------------------");
//get the inputstream of the open connection.
BufferedReader br = new BufferedReader(new InputStreamReader
(urlcon.getInputStream()));
String tempString;
//print the source code line by line.
while ((tempString = br.readLine()) != null)
{
System.out.println(tempString);
incomingJson.append(tempString);
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return incomingJson.toString();
}
}
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