public void run()

in src/main/java/org/apache/log4j/receivers/net/XMLSocketNode.java [106:207]
77 lines of code
18 McCabe index (conditional complexity)

  public void run() {
    Logger remoteLogger;
    Exception listenerException = null;
    InputStream is = null;

    if ((this.receiver == null) || (this.decoder == null)) {
      is = null;
      listenerException =
        new Exception(
          "No receiver or decoder provided.  Cannot process xml socket events");
      getLogger().error(
        "Exception constructing XML Socket Receiver", listenerException);
    }

    try {
      is = socket.getInputStream();
    } catch (Exception e) {
      is = null;
      listenerException = e;
      getLogger().error("Exception opening ObjectInputStream to " + socket, e);
    }

    if (is != null) {
        String hostName = socket.getInetAddress().getHostName();
        String remoteInfo = hostName + ":" + socket.getPort();
    	
      try {
        //read data from the socket
        //it's up to the individual decoder to handle incomplete event data
        while (true) {
          byte[] b = new byte[1024];
          int length = is.read(b);
          if (length == -1) {
            getLogger().info(
              "no bytes read from stream - closing connection.");
            break;
          }
          List v = decoder.decodeEvents(new String(b, 0, length));

          if (v != null) {
            Iterator iter = v.iterator();

            while (iter.hasNext()) {
              LoggingEvent e = (LoggingEvent) iter.next();
              e.setProperty(Constants.HOSTNAME_KEY, hostName);

              // store the known remote info in an event property
              e.setProperty("log4j.remoteSourceInfo", remoteInfo);

              // if configured with a receiver, tell it to post the event
              if (receiver != null) {
                receiver.doPost(e);

                // else post it via the hierarchy
              } else {
                // get a logger from the hierarchy. The name of the logger
                // is taken to be the name contained in the event.
                remoteLogger = repository.getLogger(e.getLoggerName());

                //event.logger = remoteLogger;
                // apply the logger-level filter
                if (
                  e.getLevel().isGreaterOrEqual(
                      remoteLogger.getEffectiveLevel())) {
                  // finally log the event as if was generated locally
                  remoteLogger.callAppenders(e);
                }
              }
            }
          }
        }
      } catch (java.io.EOFException e) {
        getLogger().info("Caught java.io.EOFException closing connection.");
        listenerException = e;
      } catch (java.net.SocketException e) {
        getLogger().info(
          "Caught java.net.SocketException closing connection.");
        listenerException = e;
      } catch (IOException e) {
        getLogger().info("Caught java.io.IOException: " + e);
        getLogger().info("Closing connection.");
        listenerException = e;
      } catch (Exception e) {
        getLogger().error("Unexpected exception. Closing connection.", e);
        listenerException = e;
      }
    }

    // close the socket
    try {
      if (is != null) {
        is.close();
      }
    } catch (Exception e) {
      //logger.info("Could not close connection.", e);
    }

    // send event to listener, if configured
    if (listener != null) {
      listener.socketClosedEvent(listenerException);
    }
  }