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/*
* ============LICENSE_START=======================================================
* ONAP : DCAE
* ================================================================================
* Copyright 2018 TechMahindra
*=================================================================================
* 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.universalvesadapter.service;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import javax.annotation.Resource;
import org.milyn.io.FileUtils;
import org.onap.universalvesadapter.adapter.GenericAdapter;
import org.onap.universalvesadapter.exception.ConfigFileReadException;
import org.onap.universalvesadapter.exception.ConfigFileSmooksConversionException;
import org.onap.universalvesadapter.exception.DMaapException;
import org.onap.universalvesadapter.exception.MapperConfigException;
import org.onap.universalvesadapter.exception.VesException;
import org.onap.universalvesadapter.utils.MapperConfigUtils;
import org.onap.universalvesadapter.utils.ParallelTasks;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.stereotype.Component;
import org.springframework.util.FileCopyUtils;
/**
* Service that starts the universal ves adapter module to listen for events
*
* @author kmalbari
*
*/
@Component
public class VesService {
private final Logger LOGGER = LoggerFactory.getLogger(this.getClass());
private boolean isRunning = true;
@Autowired
private ConfigurableApplicationContext ctx;
@Autowired
private DMaapService dmaapService;
@Autowired
private AdapterService adapterService;
@Resource(name = "universalEventAdapter")
private GenericAdapter eventAdapter;
@Value("${messagesInBatch}")
private int messagesInBatch;
@Value("${messagesInTimeInterval}")
private long messagesInTimeInverval;
@Value("${mapperConfig.file}")
private String mapperConfigFile;
/*public void start(){
String incomingJsonString = dmaapService.consume();
if(!"".equals(incomingJsonString)){
GenericAdapter eventAdapter = adapterService.identifyIncomingJsonFormatAndReturnAdapter();
String outgoingJsonString = eventAdapter.transform(incomingJsonString);
System.out.println(outgoingJsonString);
}
}*/
/**
* method triggers universal ves adapter module.
*/
public void start() {
try {
String mappingConfigFileData = FileCopyUtils.copyToString(new FileReader(mapperConfigFile));
MapperConfigUtils.readMapperConfigFile(mappingConfigFileData);
ParallelTasks parallelTasks = new ParallelTasks();
while (isRunning) {
int processingNumberOfMessage = 0;
long start = System.currentTimeMillis();
for (String incomingJsonString : dmaapService.consumeFromDMaap()) {
parallelTasks.add(() -> processReceivedJson(incomingJsonString));
processingNumberOfMessage++;
if (processingNumberOfMessage == messagesInBatch
|| (System.currentTimeMillis() - start) > messagesInTimeInverval) {
processingNumberOfMessage = 0;
start = System.currentTimeMillis();
try {
parallelTasks.startParallelTasks();
} catch (InterruptedException exception) {
LOGGER.error("Processing was interrupted due to :" + exception.getMessage());
}
parallelTasks = new ParallelTasks();
}
}
try {
parallelTasks.startParallelTasks();
} catch (InterruptedException exception) {
LOGGER.error("Processing was interrupted due to :" + exception.getMessage());
}
parallelTasks = new ParallelTasks();
}
/*String incomingJsonString = "";
incomingJsonString = dmaapService.consume();
processReceivedJson(incomingJsonString);*/
} catch (Exception exception) {
LOGGER.error("Reported exception : " + exception.getMessage(), exception);
}
}
/**
* It finds mapping file for received json, transforms json to VES format
* and publishes it to outgoing DMaap MR Topic
*
* @param incomingJsonString
*/
private void processReceivedJson(String incomingJsonString){
LOGGER.debug("Received incoming message : " + incomingJsonString);
if (!"".equals(incomingJsonString)) {
String eventType;
try {
eventType = adapterService.identifyEventTypeFromIncomingJson(incomingJsonString);
LOGGER.debug("Event identified as " + eventType);
String outgoingJsonString;
outgoingJsonString = eventAdapter.transform(incomingJsonString, eventType);
LOGGER.debug("Output VES json to be sent " + outgoingJsonString);
// dmaapService.addMessageInOutgoingQueue(outgoingJsonString);
// LOGGER.debug("Added message in outgoing Queue ");
dmaapService.publishToDMaap(outgoingJsonString);
LOGGER.debug("Sent message in outgoing Queue ");
} catch (VesException exception) {
LOGGER.error("Received exception : " + exception.getMessage(), exception);
//TODO KKM : Do we wish to continue the application with same exception in every thread??
LOGGER.error("APPLICATION WILL BE SHUTDOWN UNTIL ABOVE ISSUE IS RESOLVED.");
ctx.close();
}
}
}
/**
* method stops universal ves adapter module
*/
public void stop() {
isRunning = false;
}
}
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