DetalisConfig4store.java

package eu.play_project.dcep.distributedetalis.configurations;

import java.io.IOException;
import java.io.Serializable;

import jpl.PrologException;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.jtalis.core.JtalisContextImpl;

import eu.play_project.dcep.distributedetalis.DistributedEtalis;
import eu.play_project.dcep.distributedetalis.EcConnectionManager4store;
import eu.play_project.dcep.distributedetalis.JtalisInputProvider;
import eu.play_project.dcep.distributedetalis.JtalisOutputProvider;
import eu.play_project.dcep.distributedetalis.PlayJplEngineWrapper;
import eu.play_project.dcep.distributedetalis.PrologSemWebLib;
import eu.play_project.dcep.distributedetalis.api.Configuration;
import eu.play_project.dcep.distributedetalis.api.DEtalisConfigApi;
import eu.play_project.dcep.distributedetalis.api.DistributedEtalisException;
import eu.play_project.dcep.distributedetalis.api.EcConnectionmanagerException;
import eu.play_project.dcep.distributedetalis.configurations.helpers.LoadPrologCode;
import eu.play_project.dcep.distributedetalis.measurement.MeasurementUnit;

public class DetalisConfig4store extends DetalisConfigNet implements Configuration, Serializable{

	private static final long serialVersionUID = 100L;
	private Logger logger;
	private static LoadPrologCode cl;

	@Override
	public void configure(DEtalisConfigApi dEtalisConfigApi) throws DistributedEtalisException {
		
		logger = LoggerFactory.getLogger(this.getClass());
		logger.info("Configuring DistributedEtalis using " + this.getClass().getSimpleName());
		
		cl = new LoadPrologCode();
		
		try {
			// Init ETALIS
			PlayJplEngineWrapper engine = PlayJplEngineWrapper.getPlayJplEngineWrapper();
			JtalisContextImpl etalis = null;
			
			try {
				etalis = new JtalisContextImpl(engine);
				dEtalisConfigApi.setEtalis(etalis);
			} catch (Exception e) {
				logger.error("Error initializing ETALIS", e);
				throw new DistributedEtalisException("Error initializing ETALIS", e);
			}
			
			// Load Semantic Web Library
			PrologSemWebLib semWebLib = new PrologSemWebLib();
			dEtalisConfigApi.setSemWebLib(semWebLib);
			semWebLib.init(etalis);
			
			dEtalisConfigApi.setEventInputProvider(new JtalisInputProvider(semWebLib));
			// Use measurement unit.
			MeasurementUnit measurementUnit = new MeasurementUnit((DistributedEtalis)dEtalisConfigApi, engine, semWebLib);
			
			dEtalisConfigApi.setEcConnectionManager(new EcConnectionManager4store(dEtalisConfigApi.getDistributedEtalis()));
			dEtalisConfigApi.getEventSinks().add(dEtalisConfigApi.getEcConnectionManager());
			dEtalisConfigApi.setEventOutputProvider(new JtalisOutputProvider(
					dEtalisConfigApi.getEventSinks(), dEtalisConfigApi.getRegisteredQueries(),
					dEtalisConfigApi.getEcConnectionManager(), measurementUnit));
	
			dEtalisConfigApi.getEtalis().registerOutputProvider(dEtalisConfigApi.getEventOutputProvider());
			dEtalisConfigApi.getEtalis().registerInputProvider(dEtalisConfigApi.getEventInputProvider());
			
			//Load prolog methods.
			try {
				cl.loadCode("ReferenceCounting.pl", engine);
				cl.loadCode("Aggregatfunktions.pl", engine);
				cl.loadCode("ComplexEventData.pl", engine);
				cl.loadCode("Measurement.pl", engine);
				cl.loadCode("Statistics.pl", engine);
				cl.loadCode("Windows.pl", engine);
				cl.loadCode("Helpers.pl", engine);
				cl.loadCode("Math.pl", engine);
			} catch (IOException e) {
				throw new DistributedEtalisException("It is not possible to load prolog code. IOException. " + e.getMessage());
			}catch(PrologException e){
				throw new DistributedEtalisException("It is not possible to load prolog code. PrologException. " + e.getMessage());
			}

			// Set ETALIS properties.
			etalis.setEtalisFlags("save_ruleId", "on");
			etalis.addEventTrigger("complex/_");
			etalis.addEventTrigger("realtimeResult/2");
			etalis.setEtalisFlags("event_consumption_policy","chronological");
			//etalis.setEtalisFlags("logging","on");
			etalis.setEtalisFlags("store_fired_events_java", "off");
			etalis.setEtalisFlags("garbage_control", "garbage_control");
			etalis.setEtalisFlags("garbage_window", "1");
			etalis.setEtalisFlags("garbage_window_step", "1");
	
			// Instatiate measurement unit.
			// this.measurementUnit = new MeasurementUnit(this,
		} catch (EcConnectionmanagerException e) {
			throw new DistributedEtalisException("Error configuring DistributedEtalis: " + e.getMessage());
		}
	}
}