001/*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020package org.crsh.shell.impl.remoting;
021
022import org.crsh.shell.ShellProcess;
023import org.crsh.shell.ShellProcessContext;
024
025public class ServerProcess implements ShellProcess {
026
027  /** . */
028  final ServerAutomaton server;
029
030  /** . */
031  final String line;
032
033  /** . */
034  private int status;
035
036  ServerProcess(ServerAutomaton server, String line) {
037    this.server = server;
038    this.line = line;
039    this.status = 0;
040  }
041
042  public void execute(ShellProcessContext processContext) throws IllegalStateException {
043    if (status != 0) {
044      throw new IllegalStateException();
045    }
046    status = 1;
047    try {
048      server.execute(this, processContext);
049    }
050    finally {
051      status = 2;
052    }
053  }
054
055  public void cancel() {
056    switch (status) {
057      case 0:
058        throw new IllegalStateException();
059      case 1:
060        server.cancel(this);
061        break;
062    }
063  }
064}