/*
    * Copyright (c) 2012-2014, Dienst Landelijk Gebied - Ministerie van Economische Zaken
    * 
    * Gepubliceerd onder de BSD 2-clause licentie, 
    * zie https://github.com/MinELenI/CBSviewer/blob/master/LICENSE.md voor de volledige licentie.
    */
   package nl.mineleni.cbsviewer.servlet;
   
   import javax.servlet.ServletConfig;
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Gedeelde basis servlet.
   * 
   * @author mprins
   * 
   */
  public abstract class AbstractBaseServlet extends HttpServlet {
  
  	/** sleutel voor user id. {@value} */
  	public static final String USER_ID = "user_id";
  
  	/** sleutel voor password. {@value} */
  	public static final String USER_PASSWORD = "user_password";
  
  	/** default serialVersionUID. */
  	private static final long serialVersionUID = 1L;
  
  	/** logger. */
  	private static final Logger LOGGER = LoggerFactory
  			.getLogger(AbstractBaseServlet.class);
  	/** proxyserver address for the this service. */
  	private transient String proxyHost;
  
  	/** proxyserver port for the this service. */
  	private transient int proxyPort = -1;
  
  	/** user id voor bijv. authenticatie. @see #USER_ID */
  	private transient String userID;
  
  	/** password voor bijv. authenticatie. @see #USER_PASSWORD */
  	private transient String passID;
  
  	/**
  	 * Gets the proxy host.
  	 * 
  	 * @return the proxyHost
  	 */
  	public String getProxyHost() {
  		return this.proxyHost;
  	}
  
  	/**
  	 * Gets the proxy port.
  	 * 
  	 * @return the proxyPort
  	 */
  	public int getProxyPort() {
  		return this.proxyPort;
  	}
  
  	/**
  	 * Gets the user id.
  	 * 
  	 * @return the userID
  	 */
  	public String getUserID() {
  		return this.userID;
  	}
  
  	/**
  	 * Gets the pass id.
  	 * 
  	 * @return the passID
  	 */
  	public String getPassID() {
  		return this.passID;
  	}
  
  	/**
  	 * Leest de config opties uit de web.xml in; het gaat om {@link #USER_ID} en
  	 * {@link #USER_PASSWORD}. Daarnaast wordt expliciet de init van de super
  	 * klasse aangeroepen.
  	 * 
  	 * @param config
  	 *            the <code>ServletConfig</code> object that contains
  	 *            configutation information for this servlet
  	 * @throws ServletException
  	 *             if an exception occurs that interrupts the servlet's normal
  	 *             operation
  	 * @see javax.servlet.GenericServlet#init(javax.servlet.ServletConfig)
  	 */
  	@Override
  	public void init(final ServletConfig config) throws ServletException {
  		super.init(config);
 
 		// netwerk data/parameters
 		this.proxyHost = System.getProperty("http.proxyHost");
 		try {
 			this.proxyPort = Integer.valueOf(System
 					.getProperty("http.proxyPort"));
 		} catch (final NumberFormatException e) {
 			LOGGER.debug("Geen proxy poort gedefinieerd.");
 		}
 		LOGGER.info("Instellen van proxy config: " + this.proxyHost + ":"
 				+ this.proxyPort);
 
 		// user data/parameters
 		this.userID = config.getInitParameter(USER_ID);
 		this.passID = config.getInitParameter(USER_PASSWORD);
 		if (LOGGER.isDebugEnabled()) {
 			LOGGER.debug("User ID is: " + this.userID
 					+ "; User password lengte is: "
 					+ (null != this.passID ? this.passID.length() : "0"));
 		}
 	}
 }