All Downloads are FREE. Search and download functionalities are using the official Maven repository.
  • Log In
  • Register

    • jadex.bdi.planlib.protocols.cancelmeta.CMInitiatorPlan Maven / Gradle / Ivy

    Go to download

    The Jadex applib BDI package contains ready to use functionalities for BDI agents mostly in form of modules called capabilities.

    The newest version!
    package jadex.bdi.planlib.protocols.cancelmeta;

import java.util.Iterator;
import java.util.List;

import jadex.bdi.planlib.protocols.InteractionState;
import jadex.bdiv3x.runtime.IMessageEvent;
import jadex.bdiv3x.runtime.Plan;
import jadex.bridge.ComponentNotFoundException;
import jadex.bridge.IComponentIdentifier;
import jadex.bridge.fipa.SFipa;
import jadex.bridge.service.annotation.Timeout;
import jadex.commons.SUtil;
import jadex.commons.TimeoutException;

/**
 *  Plan to handle protocol abortion according to FIPA cancel meta protocol
 */
public class CMInitiatorPlan extends Plan
{
	public void body()
	{
		// Try to abort the interaction using FIPA-Cancel-Meta-Protocol.
		// Results of cancellation will be stored in interaction state (if any).
		InteractionState	state	= null;
		if(hasParameter("interaction_state"))
			state	= (InteractionState)getParameter("interaction_state").getValue();

		// Copy message properties from initial message.
		IMessageEvent	message	= (IMessageEvent)getParameter("message").getValue();
		IMessageEvent	cancel	= createMessageEvent("cm_cancel");
		cancel.getParameterSet(SFipa.RECEIVERS).addValues(message.getParameterSet(SFipa.RECEIVERS).getValues());
		cancel.getParameter(SFipa.CONVERSATION_ID).setValue(message.getParameter(SFipa.CONVERSATION_ID).getValue());
		cancel.getParameter(SFipa.LANGUAGE).setValue(message.getParameter(SFipa.LANGUAGE).getValue());
		cancel.getParameter(SFipa.ONTOLOGY).setValue(message.getParameter(SFipa.ONTOLOGY).getValue());
		// Use extra reply_with to avoid intermingling with other protocol messages.
		cancel.getParameter(SFipa.REPLY_WITH).setValue(SUtil.createUniqueId(getComponentName()));

		// Send cancel message to participants.
		List	rec	= SUtil.arrayToList(message.getParameterSet(SFipa.RECEIVERS).getValues());
		long	timeout	= ((Number)getParameter("timeout").getValue()).longValue();
		long time = getTime();
		try
		{
			getWaitqueue().addReply(cancel);
			try
			{
				sendMessage(cancel).get();
			}
			catch(Exception e)
			{
				fail(e);
			}
			while(rec.size()>0)
			{
				// Wait for the replies.
				long wait_time;
				if(timeout==Timeout.NONE)
				{
					wait_time	= 10000;	// Hack!!! Avoids deadlock on exit when deftimeout == -1
				}
				else
				{
					wait_time	= timeout + time - getTime();
					if(wait_time <= 0)
					{
						break;
					}
				}

				try
				{
					IMessageEvent reply	= waitForReply(cancel, wait_time);
					rec.remove(reply.getParameter(SFipa.SENDER).getValue());
					
					// Store result in interaction state.
					if(state!=null)
					{
						String	response	= "cm_inform".equals(reply.getType()) ? InteractionState.CANCELLATION_SUCCEEDED
							: "cm_failure".equals(reply.getType()) ? InteractionState.CANCELLATION_FAILED
							: InteractionState.CANCELLATION_UNKNOWN;
						state.addCancelResponse((IComponentIdentifier)reply.getParameter(SFipa.SENDER).getValue(),
							response, reply.getParameter(SFipa.CONTENT).getValue());
					}
				}
				catch(TimeoutException te)
				{
					if(timeout!=Timeout.NONE && getTime()>time+timeout)
					{
						throw te;
					}
					else
					{
						// Check, if components still exist
						// Hack!!! Avoids deadlock on exit when deftimeout == -1
						for(Iterator it=rec.iterator(); it.hasNext(); )
						{
//							System.out.println("cancel retry checking if exists: "+arec);
							try
							{
								getAgent().getDescription((IComponentIdentifier)it.next()).get(10000);
//								System.out.println("cancel retry not removed: "+arec);
							}
							catch(ComponentNotFoundException ce)
							{
//								System.out.println("cancel retry removed: "+arec);
								it.remove();
							}
							catch(Exception e)
							{
								// ignore.
//								System.out.println("cancel retry not removed: "+arec+", "+e);
							}
						}
					}
				}
			}
		}
		catch(TimeoutException e)
		{
			// Set result of non-responders to unknown.
			if(state!=null)
			{
				for(int i=0; i    
    
    
    

    




    
    
    © 2015 - 2025 Weber Informatics LLC | Privacy Policy