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package com.wordpress.salaboy.services;
import com.wordpress.salaboy.model.Call;
import com.wordpress.salaboy.model.ProcedureCompleted;
import com.wordpress.salaboy.model.events.AllProceduresEndedEvent;
import com.wordpress.salaboy.services.workitemhandlers.AsyncStartProcedureWorkItemHandler;
import com.wordpress.salaboy.workitemhandlers.MyReportingWorkItemHandler;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.io.IOUtils;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseConfiguration;
import org.drools.KnowledgeBaseFactoryService;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderError;
import org.drools.builder.KnowledgeBuilderErrors;
import org.drools.builder.KnowledgeBuilderFactoryService;
import org.drools.builder.ResourceType;
import org.drools.conf.EventProcessingOption;
import org.drools.grid.ConnectionFactoryService;
import org.drools.grid.GridConnection;
import org.drools.grid.GridNode;
import org.drools.grid.GridServiceDescription;
import org.drools.grid.conf.GridPeerServiceConfiguration;
import org.drools.grid.conf.impl.GridPeerConfiguration;
import org.drools.grid.impl.GridImpl;
import org.drools.grid.service.directory.Address;
import org.drools.grid.service.directory.WhitePages;
import org.drools.grid.service.directory.impl.CoreServicesLookupConfiguration;
import org.drools.grid.service.directory.impl.GridServiceDescriptionImpl;
import org.drools.grid.service.directory.impl.WhitePagesRemoteConfiguration;
import org.drools.io.impl.ByteArrayResource;
import org.drools.io.impl.ClassPathResource;
import org.drools.runtime.StatefulKnowledgeSession;
import org.drools.runtime.rule.WorkingMemoryEntryPoint;
import org.jbpm.task.service.hornetq.CommandBasedHornetQWSHumanTaskHandler;
/**
*
* @author salaboy
*/
public class GenericEmergencyProcedureImpl implements GenericEmergencyProcedure {
private static GenericEmergencyProcedureImpl instance;
private StatefulKnowledgeSession genericEmergencySession;
private GenericEmergencyProcedureImpl() {
configure();
setWorkItemHandlers();
}
public static GenericEmergencyProcedureImpl getInstance(){
if(instance == null){
instance = new GenericEmergencyProcedureImpl();
}
return instance;
}
private WorkingMemoryEntryPoint getPhoneCallsEntryPoint(){
return genericEmergencySession.getWorkingMemoryEntryPoint("phoneCalls stream");
}
@Override
public void newPhoneCall(Call call){
//Track new call
getPhoneCallsEntryPoint().insert(call);
}
private StatefulKnowledgeSession createGenericEmergencyServiceSession() throws IOException{
Map<String, GridServiceDescription> coreServicesMap = new HashMap<String, GridServiceDescription>();
GridServiceDescriptionImpl gsd = new GridServiceDescriptionImpl(WhitePages.class.getName());
Address addr = gsd.addAddress("socket");
addr.setObject(new InetSocketAddress[]{new InetSocketAddress("localhost", 8000)});
coreServicesMap.put(WhitePages.class.getCanonicalName(), gsd);
GridImpl grid = new GridImpl(new ConcurrentHashMap<String, Object>());
GridPeerConfiguration conf = new GridPeerConfiguration();
GridPeerServiceConfiguration coreSeviceConf = new CoreServicesLookupConfiguration(coreServicesMap);
conf.addConfiguration(coreSeviceConf);
GridPeerServiceConfiguration wprConf = new WhitePagesRemoteConfiguration();
conf.addConfiguration(wprConf);
conf.configure(grid);
GridServiceDescription<GridNode> n1Gsd = grid.get(WhitePages.class).lookup("n1");
GridConnection<GridNode> conn = grid.get(ConnectionFactoryService.class).createConnection(n1Gsd);
GridNode remoteN1 = conn.connect();
KnowledgeBuilder kbuilder = remoteN1.get(KnowledgeBuilderFactoryService.class).newKnowledgeBuilder();
kbuilder.add(new ByteArrayResource(IOUtils.toByteArray(new ClassPathResource("processes/procedures/GenericEmergencyProcedure.bpmn").getInputStream())), ResourceType.BPMN2);
kbuilder.add(new ByteArrayResource(IOUtils.toByteArray(new ClassPathResource("rules/phoneCallsManagement.drl").getInputStream())), ResourceType.DRL);
kbuilder.add(new ByteArrayResource(IOUtils.toByteArray(new ClassPathResource("rules/procedureSuggestions.drl").getInputStream())), ResourceType.DRL);
kbuilder.add(new ByteArrayResource(IOUtils.toByteArray(new ClassPathResource("rules/emergencyLifeCycle.drl").getInputStream())), ResourceType.DRL);
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors != null && errors.size() > 0) {
for (KnowledgeBuilderError error : errors) {
if (error == null){
System.out.println(">>>>>>> Error: Unkown error!");
}else{
System.out.println(">>>>>>> Error: " + error.getMessage());
}
}
throw new IllegalStateException("Failed to parse knowledge!");
}
KnowledgeBaseConfiguration kbaseConf = remoteN1.get(KnowledgeBaseFactoryService.class).newKnowledgeBaseConfiguration();
kbaseConf.setOption(EventProcessingOption.STREAM);
KnowledgeBase kbase = remoteN1.get(KnowledgeBaseFactoryService.class).newKnowledgeBase(kbaseConf);
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession();
remoteN1.set("phoneCallsManagementSession", session);
return session;
}
private void setWorkItemHandlers() {
genericEmergencySession.getWorkItemManager().registerWorkItemHandler("Human Task", new CommandBasedHornetQWSHumanTaskHandler(genericEmergencySession));
genericEmergencySession.getWorkItemManager().registerWorkItemHandler("Start Procedure", new AsyncStartProcedureWorkItemHandler());
genericEmergencySession.getWorkItemManager().registerWorkItemHandler("Reporting", new MyReportingWorkItemHandler());
}
@Override
public void allProceduresEnededNotification(AllProceduresEndedEvent event) {
genericEmergencySession.signalEvent("com.wordpress.salaboy.model.events.AllProceduresEndedEvent", event);
}
public void configure() {
System.out.println(">>> Initializing Generic Emergency Procedure Service ...");
try {
genericEmergencySession = createGenericEmergencyServiceSession();
} catch (IOException ex) {
Logger.getLogger(GenericEmergencyProcedureImpl.class.getName()).log(Level.SEVERE, null, ex);
}
new Thread(new Runnable(){
@Override
public void run() {
genericEmergencySession.fireUntilHalt();
}
}).start();
System.out.println(">>> Initializing Generic Emergency Procedure Service Running ...");
}
@Override
public void procedureCompletedNotification(String emergencyId, String procedureId) {
genericEmergencySession.insert(new ProcedureCompleted(emergencyId, procedureId));
}
}