+++ /dev/null
-/*
- * Copyright (c) 2003-2005 The BISON Project
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-package peersim.core;
-
-
-/**
-* Instances of classes implementing this interface
-* maintain a fail state, i.e. information about the availability
-* of the object.
-*/
-public interface Fallible {
-
-
- /**
- * Fail state which indicates that the object is operating normally.
- */
- public int OK = 0;
-
- /**
- * Fail state indicating that the object is dead and recovery is
- * not possible. When this state is set, it is a good idea to make sure
- * that the state of the object becomes such that any attempt to
- * operate on it causes a visible error of some kind.
- */
- public int DEAD = 1;
-
- /**
- * Fail state indicating that the object is not dead, but is temporarily
- * not accessible.
- */
- public int DOWN = 2;
-
- /**
- * Returns the state of this object. Must be one of the constants
- * defined in interface {@link Fallible}.
- */
- public int getFailState();
-
- /**
- * Sets the fails state of this object. Parameter must be one of the
- * constants defined in interface {@link Fallible}.
- */
- public void setFailState(int failState);
-
- /**
- * Convenience method to check if the node is up and running
- * @return must return true if and only if
- * <code>getFailState()==OK</code>
- */
- public boolean isUp();
-}
-
-
