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/*******************************************************************************
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*
*******************************************************************************/
package org.onap.dmaap.mr.dmaapMMAgent;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.log4j.Logger;
import com.google.gson.Gson;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
public class TopicUtil {
static final Logger logger = Logger.getLogger(TopicUtil.class);
public String publishTopic(String topicURL, String topicname, String mechid, String password, String message) {
try {
String requestURL = topicURL + "/events/" + topicname;
String authString = mechid + ":" + password;
String authStringEnc = Base64.encode(authString.getBytes());
URL url = new URL(requestURL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("Content-Length", Integer.toString(message.length()));
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.write(message.getBytes());
InputStream content = (InputStream) connection.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(content));
String line;
String response = "";
while ((line = in.readLine()) != null) {
response = response + line;
}
return response;
} catch (Exception e) {
logger.error(" Exception Occered " + e);
return "ERROR:" + e.getLocalizedMessage();
}
}
public String subscribeTopic(String topicURL, String topicname, String timeout, String mechid, String password) {
String response = "";
try {
String requestURL = topicURL + "/events/" + topicname + "/mirrormakeragent/1?timeout=" + timeout
+ "&limit=1";
String authString = mechid + ":" + password;
String authStringEnc = Base64.encode(authString.getBytes());
URL url = new URL(requestURL);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
connection.setRequestProperty("Content-Type", "application/json");
InputStream content = (InputStream) connection.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = in.readLine()) != null) {
response = response + line;
}
Gson g = new Gson();
// get message as JSON String Array
String[] topicMessage = g.fromJson(response, String[].class);
if (topicMessage.length != 0) {
return topicMessage[0];
}
} catch (Exception e) {
logger.error(" Exception Occered " + e);
return "ERROR:" + e.getMessage() + " Server Response is:" + response;
}
return null;
}
}
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