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/*
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* Copyright (C) 2019 Nokia. All rights reserved.s
* ================================================================================
* 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 com.google.common.reflect.TypeToken;
import com.google.gson.Gson;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Type;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import org.json.JSONArray;
import org.json.JSONObject;
import org.onap.dcae.ApplicationException;
import org.onap.dcae.ApplicationSettings;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EventUpdater {
private static final String EVENT_LIST = "eventList";
private static final String EVENT = "event";
private static final String VES_UNIQUE_ID = "VESuniqueId";
private static final String VES_VERSION = "VESversion";
private static final String COULD_NOT_FIND_FILE = "Couldn't find file ./etc/eventTransform.json";
private static final Type EVENT_LIST_TYPE = new TypeToken<List<Event>>() {}.getType();
private static final Logger log = LoggerFactory.getLogger(EventSender.class);
private static final String EVENT_LITERAL = "event";
private static final String COMMON_EVENT_HEADER = "commonEventHeader";
private static final String EVENT_TRANSFORM = "./etc/eventTransform.json";
private ApplicationSettings settings;
private final SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z");
public EventUpdater(ApplicationSettings settings) {
this.settings = settings;
}
public JSONArray convert(JSONObject jsonObject, String version, UUID uuid, String type){
if(type.equalsIgnoreCase(EVENT_LIST)){
return convertEvents(jsonObject, uuid.toString(), version);
}
else {
return convertEvent(jsonObject, uuid.toString(), version);
}
}
private JSONArray convertEvents(JSONObject jsonObject,
String uuid, String version) {
JSONArray asArrayEvents = new JSONArray();
JSONArray events = jsonObject.getJSONArray(EVENT_LIST);
for (int i = 0; i < events.length(); i++) {
JSONObject event = new JSONObject().put(EVENT, events.getJSONObject(i));
event.put(VES_UNIQUE_ID, uuid + "-" + i);
event.put(VES_VERSION, version);
asArrayEvents.put(overrideEvent(event));
}
return asArrayEvents;
}
private JSONArray convertEvent(JSONObject jsonObject, String uuid, String version) {
jsonObject.put(VES_UNIQUE_ID, uuid);
jsonObject.put(VES_VERSION, version);
return new JSONArray().put(overrideEvent(jsonObject));
}
private JSONObject overrideEvent(JSONObject event) {
JSONObject jsonObject = addCurrentTimeToEvent(event);
if (settings.eventTransformingEnabled()) {
try (FileReader fr = new FileReader(EVENT_TRANSFORM)) {
log.info("parse " + EVENT_TRANSFORM + " file");
List<Event> events = new Gson().fromJson(fr, EVENT_LIST_TYPE);
parseEventsJson(events, new ConfigProcessorAdapter(new ConfigProcessors(jsonObject)));
} catch (IOException e) {
log.error(COULD_NOT_FIND_FILE, e);
throw new ApplicationException(COULD_NOT_FIND_FILE, e);
}
}
if (jsonObject.has(VES_VERSION))
jsonObject.remove(VES_VERSION);
log.debug("Modified event:" + jsonObject);
return jsonObject;
}
private JSONObject addCurrentTimeToEvent(JSONObject event) {
final Date currentTime = new Date();
JSONObject collectorTimeStamp = new JSONObject().put("collectorTimeStamp", dateFormat.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);
return event;
}
private void parseEventsJson(List<Event> eventsTransform, ConfigProcessorAdapter configProcessorAdapter) {
for (Event eventTransform : eventsTransform) {
JSONObject filterObj = new JSONObject(eventTransform.filter.toString());
if (configProcessorAdapter.isFilterMet(filterObj)) {
callProcessorsMethod(configProcessorAdapter, eventTransform.processors);
}
}
}
private void callProcessorsMethod(ConfigProcessorAdapter configProcessorAdapter, List<Processor> processors) {
for (Processor processor : processors) {
//TODO try to remove refection
final String functionName = processor.functionName;
final JSONObject args = new JSONObject(processor.args.toString());
log.info(String.format("functionName==%s | args==%s", functionName, args));
try {
configProcessorAdapter.runConfigProcessorFunctionByName(functionName, args);
} catch (ReflectiveOperationException e) {
log.error("EventProcessor Exception" + e.getMessage() + e + e.getCause());
}
}
}
}
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