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/*-
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 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=========================================================
*/
package org.onap.dcae.commonFunction;
import com.att.nsa.clock.SaClock;
import com.att.nsa.logging.LoggingContext;
import com.att.nsa.logging.log4j.EcompFields;
import com.google.gson.JsonArray;
import com.google.gson.JsonParser;
import org.json.JSONArray;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.FileReader;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.TimeZone;
public class EventProcessor implements Runnable {
private static final Logger log = LoggerFactory.getLogger(EventProcessor.class);
private static final String EVENT_LITERAL = "event";
private static final String COMMON_EVENT_HEADER = "commonEventHeader";
private static HashMap<String, String[]> streamidHash = new HashMap<>();
public JSONObject event;
public EventProcessor() {
log.debug("EventProcessor: Default Constructor");
String[] list = CommonStartup.streamid.split("\\|");
for (String aList : list) {
String domain = aList.split("=")[0];
String[] streamIdList = aList.substring(aList.indexOf('=') + 1).split(",");
log.debug(String.format("Domain: %s streamIdList:%s", domain, Arrays.toString(streamIdList)));
streamidHash.put(domain, streamIdList);
}
}
@Override
public void run() {
try {
event = CommonStartup.fProcessingInputQueue.take();
while (event != null) {
// As long as the producer is running we remove elements from
// the queue.
log.info("QueueSize:" + CommonStartup.fProcessingInputQueue.size()+ "\tEventProcessor\tRemoving element: " + event );
String uuid = event.get("VESuniqueId").toString();
LoggingContext localLC = VESLogger.getLoggingContextForThread(uuid);
localLC.put(EcompFields.kBeginTimestampMs, SaClock.now());
log.debug("event.VESuniqueId" + event.get("VESuniqueId") + "event.commonEventHeader.domain:"
+ event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER).getString("domain"));
String[] streamIdList = streamidHash
.get(event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER).getString("domain"));
log.debug("streamIdList:" + streamIdList);
if (streamIdList.length == 0) {
log.error("No StreamID defined for publish - Message dropped" + event);
} else {
for (String aStreamIdList : streamIdList) {
log.info("Invoking publisher for streamId:" + aStreamIdList);
this.overrideEvent();
EventPublisherHash.getInstance().sendEvent(event, aStreamIdList);
}
}
log.debug("Message published" + event);
event = CommonStartup.fProcessingInputQueue.take();
}
} catch (InterruptedException e) {
log.error("EventProcessor InterruptedException" + e.getMessage());
Thread.currentThread().interrupt();
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public void overrideEvent() {
// Set collector timestamp in event payload before publish
final Date currentTime = new Date();
final SimpleDateFormat sdf = new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z");
sdf.setTimeZone(TimeZone.getTimeZone("GMT"));
JSONObject collectorTimeStamp = new JSONObject().put("collectorTimeStamp", sdf.format(currentTime));
JSONObject commonEventHeaderkey = event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER);
commonEventHeaderkey.put("internalHeaderFields", collectorTimeStamp);
event.getJSONObject(EVENT_LITERAL).put(COMMON_EVENT_HEADER, commonEventHeaderkey);
if (CommonStartup.eventTransformFlag == 1) {
// read the mapping json file
final JsonParser parser = new JsonParser();
FileReader fr = null;
try {
fr = new FileReader("./etc/eventTransform.json");
final JsonArray jo = (JsonArray) parser.parse(fr);
log.info("parse eventTransform.json");
// now convert to org.json
final String jsonText = jo.toString();
final JSONArray topLevel = new JSONArray(jsonText);
Class[] paramJSONObject = new Class[1];
paramJSONObject[0] = JSONObject.class;
// load VESProcessors class at runtime
Class cls = Class.forName("org.onap.dcae.commonFunction.ConfigProcessors");
Constructor constr = cls.getConstructor(paramJSONObject);
Object obj = constr.newInstance(event);
for (int j = 0; j < topLevel.length(); j++) {
JSONObject filterObj = topLevel.getJSONObject(j).getJSONObject("filter");
Method method = cls.getDeclaredMethod("isFilterMet", paramJSONObject);
boolean filterMet = (boolean) method.invoke(obj, filterObj);
if (filterMet) {
final JSONArray processors = topLevel.getJSONObject(j).getJSONArray("processors");
// call the processor method
for (int i = 0; i < processors.length(); i++) {
final JSONObject processorList = processors.getJSONObject(i);
final String functionName = processorList.getString("functionName");
final JSONObject args = processorList.getJSONObject("args");
log.info(String.format("functionName==%s | args==%s", functionName, args));
// reflect method call
method = cls.getDeclaredMethod(functionName, paramJSONObject);
method.invoke(obj, args);
}
}
}
} catch (Exception e) {
log.error("EventProcessor Exception" + e.getMessage() + e + e.getCause());
} finally {
// close the file
if (fr != null) {
try {
fr.close();
} catch (IOException e) {
log.error("Error closing file reader stream : " + e.toString());
}
}
}
}
// Remove VESversion from event. This field is for internal use and must
// be removed after use.
if (event.has("VESversion"))
event.remove("VESversion");
log.debug("Modified event:" + event);
}
}
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