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/*-
* ============LICENSE_START=======================================================
* org.onap.dcaegen2.collectors.restconf
* ================================================================================
* Copyright (C) 2018-2019 Huawei. 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=========================================================
*/
package org.onap.dcae.common;
import org.glassfish.jersey.media.sse.EventListener;
import org.glassfish.jersey.media.sse.InboundEvent;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.onap.dcae.RestConfCollector;
import org.onap.dcae.controller.PersistentEventConnection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DataChangeEventListener implements EventListener {
private static final Logger log = LoggerFactory.getLogger(DataChangeEventListener.class);
private PersistentEventConnection conn;
public DataChangeEventListener(PersistentEventConnection conn) {
this.conn = conn;
}
@Override
public void onEvent(InboundEvent event) {
try {
log.info("SSE Event is received");
String s = event.readData();
jsonType type = isJSONValid(s);
if (type == jsonType.OBJECT) {
JSONObject jsonObj = new JSONObject(s);
EventData ev = new EventData(this.conn, jsonObj);
log.info("SSE Event in json " + jsonObj.toString());
RestConfCollector.handleEvents(ev);
} else if (type == jsonType.ARRAY) {
JSONArray jsonArr = new JSONArray(s);
for (int j = 0; j < jsonArr.length(); j++) {
JSONObject jsonObj = jsonArr.getJSONObject(j);
EventData ev = new EventData(this.conn, jsonObj);
log.info("SSE Event in json " + jsonObj.toString());
RestConfCollector.handleEvents(ev);
}
} else {
log.info("Received heart beat ");
}
} catch (Exception e) {
e.printStackTrace();
}
}
private enum jsonType {
OBJECT, ARRAY, NONE;
}
public jsonType isJSONValid(String test) {
try {
new JSONObject(test);
log.info("Received a Json object");
} catch (JSONException ex) {
try {
new JSONArray(test);
return jsonType.ARRAY;
} catch (JSONException ex1) {
return jsonType.NONE;
}
}
return jsonType.OBJECT;
}
}
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