ConfigReaderFactory

package it.sensorsystem.core.config;

import java.util.ArrayList;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.felix.dm.Component;
import org.apache.felix.dm.DependencyManager;
import org.osgi.framework.FrameworkUtil;
import org.osgi.service.cm.ConfigurationException;
import org.osgi.service.cm.ManagedServiceFactory;
import org.osgi.service.component.annotations.ConfigurationPolicy;
import org.osgi.service.component.annotations.Reference;

import it.sensorsystem.core.camel.CamelService;
import it.sensorsystem.core.camel_processor.CSVProcessor;
import it.sensorsystem.core.camel_processor.Constants;
import it.sensorsystem.core.camel_processor.Processor;
import it.sensorsystem.core.converter.TypeConverter;
import it.sensorsystem.core.utils.Config;
import it.sensorsystem.core.utils.Utils;
import it.sensorsystem.events.EventPublisher;

@org.osgi.service.component.annotations.Component(name="factory", property="service.pid=it.sensorsystem.core.config.factory", configurationPolicy=ConfigurationPolicy.IGNORE)
public class ConfigReaderFactory implements ManagedServiceFactory{
	private static final String DELETE_CONDITIONS = "noop=true&delete=true";
	//private static final String DELETE_CONDITIONS = "readLock=changed&idempotent=false&noop=true";
	private static final String NON_DELETE_CONDITIONS = "noop=true";

	private volatile DependencyManager dependencyManager;
	private final Map<String, Component> components = new HashMap<>();
	private String url;
	private String name;
	private int confLine;
	private String endpointType;
	private String ip;
	private String username;
	private String password;
	private String folder;
	private boolean delete;
	private CamelService camel;
	private TypeConverter converter;
	private EventPublisher publisher;

	@Reference(service=TypeConverter.class)
	public void setTypeConverter(TypeConverter converter) {
		this.converter = converter;
	}
	public void unsetTypeConverter(TypeConverter converter) {
		this.converter = null;
	}

	@Reference(service=EventPublisher.class)
	public void setEventPublisher(EventPublisher publisher) {
		this.publisher = publisher;
	}
	public void unsetEventPublisher(EventPublisher publisher) {
		this.publisher = null;
	}
	@Reference(service=CamelService.class)
	public void setCamelService(CamelService camel) {
		this.camel=camel;
	}
	public void unsetCamelService(CamelService camel) {
		this.camel=null;
	}

	@Override
	public String getName() {
		return this.getClass().getName();
	}

	@Override
	public void updated(String pid, @SuppressWarnings("rawtypes") Dictionary props) throws ConfigurationException {
		if(components.containsKey(pid)) {
			return;
		}
		if(props!=null){
			List<String> attributes = new ArrayList<>();
			List<String> csvTypes = new ArrayList<>();

			int count=1;
			String configurationLine;
			while((configurationLine = (String) props.get(Integer.toString(count++))) !=null){
				List<String> values = Utils.getValuesFromLine(configurationLine);
				attributes.add(values.size()>=1 ? values.get(0) : TypeConverter.NAMELESS);
				csvTypes.add(values.size()>=2 ? values.get(1) : TypeConverter.NAMELESS);
			}
			confLine = Integer.parseInt((String) props.get(Config.CONFIG_LINE));
			name = (String) props.get(Config.NAME);

			initConfigParameters(props);
			buildURL();
			System.out.println("[URL] "+url);

			try {
				Map<String, Object> params = new HashMap<>();
				params.put(Constants.ATTRIBUTES, attributes);
				params.put(Constants.TYPES, csvTypes);
				params.put(Constants.CONF_LINE, confLine);
				params.put(Constants.NAME, name);
				params.put(Constants.PUBLISHER, publisher);
				params.put(Constants.CONVERTER, converter);
				Processor processor = new CSVProcessor(params);
				camel.start(FrameworkUtil.getBundle(this.getClass()).getBundleContext(), processor, url);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	@Override
	public void deleted(String pid) {
		Component component = components.remove(pid);
		dependencyManager.remove(component);
		component.stop();
	}
	private void buildURL() {
		url = "";
		if(endpointType.equals("ftp")) {
			url += "ftp";
		} else if(endpointType.equals("file")) {
			url += "file";
		}
		url += "://"+username+"@"+ip+"/"+folder+"?";
		if(!password.equals("")) {
			url+="password="+password+"&";
		}
		if(delete) {
			url += DELETE_CONDITIONS;
		} else {
			url += NON_DELETE_CONDITIONS;
		}
	}
	private void initConfigParameters(@SuppressWarnings("rawtypes") Dictionary props) {
		confLine = Integer.parseInt((String) props.get(Config.CONFIG_LINE));
		name = (String) props.get(Config.NAME);
		endpointType = (String) props.get(Config.ENDPOINT_TYPE);
		ip = (String) props.get(Config.IP_ADDRESS);
		username = (String) props.get(Config.USERNAME);
		password = (String) props.get(Config.PASSWORD);
		folder = (String) props.get(Config.FOLDER);
		delete = ((String) props.get(Config.DELETE)).equals("true");
		printParameters();
	}
	private void printParameters() {
		System.out.println("\nStarting camel with parameters:");
		System.out.println("[sensor_name]::"+name);
		System.out.println("[endpoint_type]::"+endpointType);
		System.out.println("[ip_address]::"+ip);
		System.out.println("[user]::"+username);
		System.out.println("[password]::"+password);
		System.out.println("[folder]::"+folder);
		System.out.println("[delete]::"+delete);
	}
}