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/*
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* Copyright (C) 2018 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 io.vavr.collection.Map;
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 org.json.JSONObject;
import org.onap.dcae.ApplicationSettings;
import org.onap.dcae.common.publishing.EventPublisher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EventSender {
private Map<String, String[]> streamidHash;
private ApplicationSettings properties;
private EventPublisher eventPublisher;
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 final SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z");
public EventSender( EventPublisher eventPublisher, ApplicationSettings properties) {
this.eventPublisher = eventPublisher;
this.streamidHash = properties.dMaaPStreamsMapping();
this.properties = properties;
}
public void send(JSONObject event) {
streamidHash.get(getDomain(event))
.onEmpty(() -> log.error("No StreamID defined for publish - Message dropped" + event))
.forEach(streamIds -> sendEventsToStreams(event, streamIds));
}
public static String getDomain(JSONObject event) {
return event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER).getString("domain");
}
private void sendEventsToStreams(JSONObject event, String[] streamIdList) {
for (String aStreamIdList : streamIdList) {
log.info("Invoking publisher for streamId:" + aStreamIdList);
eventPublisher.sendEvent(overrideEvent(event), aStreamIdList);
}
}
private JSONObject overrideEvent(JSONObject event) {
JSONObject jsonObject = addCurrentTimeToEvent(event);
if (properties.eventTransformingEnabled()) {
try (FileReader fr = new FileReader("./etc/eventTransform.json")) {
log.info("parse eventTransform.json");
List<Event> events = new Gson().fromJson(fr, EVENT_LIST_TYPE);
parseEventsJson(events, new ConfigProcessorAdapter(new ConfigProcessors(jsonObject)));
} catch (IOException e) {
log.error("Couldn't find file ./etc/eventTransform.json" + e.toString());
}
}
if (jsonObject.has("VESversion"))
jsonObject.remove("VESversion");
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) {
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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