+++ /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;
-
-import peersim.config.*;
-
-/**
-* This is the default {@link Node} class that is used to compose the
-* {@link Network}.
-*/
-public class GeneralNode implements Node {
-
-
-// ================= fields ========================================
-// =================================================================
-
-/** used to generate unique IDs */
-private static long counterID = -1;
-
-/**
-* The protocols on this node.
-*/
-protected Protocol[] protocol = null;
-
-/**
-* The current index of this node in the node
-* list of the {@link Network}. It can change any time.
-* This is necessary to allow
-* the implementation of efficient graph algorithms.
-*/
-private int index;
-
-/**
-* The fail state of the node.
-*/
-protected int failstate = Fallible.OK;
-
-/**
-* The ID of the node. It should be final, however it can't be final because
-* clone must be able to set it.
-*/
-private long ID;
-
-// ================ constructor and initialization =================
-// =================================================================
-
-/** Used to construct the prototype node. This class currently does not
-* have specific configuration parameters and so the parameter
-* <code>prefix</code> is not used. It reads the protocol components
-* (components that have type {@value peersim.core.Node#PAR_PROT}) from
-* the configuration.
-*/
-public GeneralNode(String prefix) {
-
- String[] names = Configuration.getNames(PAR_PROT);
- CommonState.setNode(this);
- ID=nextID();
- protocol = new Protocol[names.length];
- for (int i=0; i < names.length; i++) {
- CommonState.setPid(i);
- Protocol p = (Protocol)
- Configuration.getInstance(names[i]);
- protocol[i] = p;
- }
-}
-
-
-// -----------------------------------------------------------------
-
-public Object clone() {
-
- GeneralNode result = null;
- try { result=(GeneralNode)super.clone(); }
- catch( CloneNotSupportedException e ) {} // never happens
- result.protocol = new Protocol[protocol.length];
- CommonState.setNode(result);
- result.ID=nextID();
- for(int i=0; i<protocol.length; ++i) {
- CommonState.setPid(i);
- result.protocol[i] = (Protocol)protocol[i].clone();
- }
- return result;
-}
-
-// -----------------------------------------------------------------
-
-/** returns the next unique ID */
-private long nextID() {
-
- return counterID++;
-}
-
-// =============== public methods ==================================
-// =================================================================
-
-
-public void setFailState(int failState) {
-
- // after a node is dead, all operations on it are errors by definition
- if(failstate==DEAD && failState!=DEAD) throw new IllegalStateException(
- "Cannot change fail state: node is already DEAD");
- switch(failState)
- {
- case OK:
- failstate=OK;
- break;
- case DEAD:
- //protocol = null;
- index = -1;
- failstate = DEAD;
- for(int i=0;i<protocol.length;++i)
- if(protocol[i] instanceof Cleanable)
- ((Cleanable)protocol[i]).onKill();
- break;
- case DOWN:
- failstate = DOWN;
- break;
- default:
- throw new IllegalArgumentException(
- "failState="+failState);
- }
-}
-
-// -----------------------------------------------------------------
-
-public int getFailState() { return failstate; }
-
-// ------------------------------------------------------------------
-
-public boolean isUp() { return failstate==OK; }
-
-// -----------------------------------------------------------------
-
-public Protocol getProtocol(int i) { return protocol[i]; }
-
-//------------------------------------------------------------------
-
-public int protocolSize() { return protocol.length; }
-
-//------------------------------------------------------------------
-
-public int getIndex() { return index; }
-
-//------------------------------------------------------------------
-
-public void setIndex(int index) { this.index = index; }
-
-//------------------------------------------------------------------
-
-/**
-* Returns the ID of this node. The IDs are generated using a counter
-* (i.e. they are not random).
-*/
-public long getID() { return ID; }
-
-//------------------------------------------------------------------
-
-public String toString()
-{
- StringBuffer buffer = new StringBuffer();
- buffer.append("ID: "+ID+" index: "+index+"\n");
- for(int i=0; i<protocol.length; ++i)
- {
- buffer.append("protocol["+i+"]="+protocol[i]+"\n");
- }
- return buffer.toString();
-}
-
-//------------------------------------------------------------------
-
-/** Implemented as <code>(int)getID()</code>. */
-public int hashCode() { return (int)getID(); }
-
-}
-
-
