XMPPAuctionHouse.java

package auctionsniper.xmpp;

import java.util.logging.FileHandler;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;

import org.apache.commons.io.FilenameUtils;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;

import auctionsniper.Auction;
import auctionsniper.AuctionHouse;
import auctionsniper.UserRequestListener.Item;

public class XMPPAuctionHouse implements AuctionHouse {
  private static final String LOGGER_NAME = "auction-sniper";
  public static final String LOG_FILE_NAME = "auction-sniper.log";
  public static final String ITEM_ID_AS_LOGIN = "auction-%s"; 
  public static final String AUCTION_ID_FORMAT = ITEM_ID_AS_LOGIN + "@%s/" + XMPPAuctionHouse.AUCTION_RESOURCE;
  public static final String AUCTION_RESOURCE = "Auction";
  
  private final XMPPConnection connection;
  private final LoggingXMPPFailureReporter failureReporter;
  
  public XMPPAuctionHouse(XMPPConnection connection) throws XMPPAuctionException {
    this.connection = connection;
    this.failureReporter = new LoggingXMPPFailureReporter(makeLogger());
  }

  public Auction auctionFor(Item item) {
    return new XMPPAuction(connection, auctionId(item.identifier, connection), failureReporter);
  }

  public void disconnect() {
    connection.disconnect();
  }

  public static XMPPAuctionHouse connect(String hostname, String username, String password) throws XMPPAuctionException {
    XMPPConnection connection = new XMPPConnection(hostname); 
    try {
      connection.connect(); 
      connection.login(username, password, AUCTION_RESOURCE); 
      return new XMPPAuctionHouse(connection);
    } catch (XMPPException xmppe) {
        throw new XMPPAuctionException("Could not connect to auction: " + connection, xmppe);
    }
  }
  
  private static String auctionId(String itemId, XMPPConnection connection) { 
    return String.format(AUCTION_ID_FORMAT, itemId, connection.getServiceName());
  }
  
  private Logger makeLogger() throws XMPPAuctionException { 
    Logger logger = Logger.getLogger(LOGGER_NAME); 
    logger.setUseParentHandlers(false); 
    logger.addHandler(simpleFileHandler()); 
    return logger; 
  }
  
  private FileHandler simpleFileHandler() throws XMPPAuctionException { 
    try { 
      FileHandler handler = new FileHandler(LOG_FILE_NAME); 
      handler.setFormatter(new SimpleFormatter()); 
      return handler; 
    } catch (Exception e) { 
      throw new XMPPAuctionException("Could not create logger FileHandler " 
                                   + FilenameUtils.getFullPath(LOG_FILE_NAME), e); 
    } 
  } 

}