Package jadex.platform.service.awareness

Class LocalNetworkAwarenessBaseAgent

java.lang.Object

jadex.platform.service.awareness.LocalNetworkAwarenessBaseAgent

All Implemented Interfaces:

IAwarenessService

Direct Known Subclasses:

BroadcastAwarenessAgent, MulticastAwarenessAgent

public abstract class LocalNetworkAwarenessBaseAgent
extends java.lang.Object
implements IAwarenessService

Implements passive awareness via multicast.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.lang.String	address	The address.
protected IInternalAccess	agent	The agent.
protected SlidingCuckooFilter	filter	The duplicate filter of the current search, if any.
protected java.util.Map<IComponentIdentifier,java.util.List<TransportAddress>>	newplatforms	The newly found platforms.
protected java.util.Map<IComponentIdentifier,java.util.List<TransportAddress>>	platforms	The currently known platforms.
protected int	port	The receiver port.
protected java.net.DatagramSocket	recvsocket	The socket to receive.
protected IntermediateFuture<IComponentIdentifier>	search	The current search, if any.
protected java.net.DatagramSocket	sendsocket	The socket to send.
protected ITransportAddressService	tas
protected double	waitfactor	The search delay (time that is waited for responses from platforms) as factor of default/service call timeout (default 0.333..., i.e.

Constructor Summary

Constructors

Constructor	Description
LocalNetworkAwarenessBaseAgent()

Method Summary

Modifier and Type	Method	Description
IFuture<java.util.List<TransportAddress>>	getPlatformAddresses(IComponentIdentifier platformid)	Gets the address for a platform ID using the awareness mechanism.
void	init()	At startup create a multicast socket for listening.
IIntermediateFuture<IComponentIdentifier>	searchPlatforms()	Try to find other platforms and finish after timeout.
protected IFuture<java.lang.Void>	sendInfo(java.lang.String address, int port)	Send address info to a given multi or unicast address.
void	shutdown()	Stop the service.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

address

protected java.lang.String address

The address.

port

protected int port

The receiver port.

waitfactor

protected double waitfactor

The search delay (time that is waited for responses from platforms) as factor of default/service call timeout (default 0.333..., i.e. a third of default/service call timeout).

agent

protected IInternalAccess agent

The agent.

tas

protected ITransportAddressService tas

search

protected IntermediateFuture<IComponentIdentifier> search

The current search, if any.

filter

protected SlidingCuckooFilter filter

The duplicate filter of the current search, if any.

platforms

protected java.util.Map<IComponentIdentifier,java.util.List<TransportAddress>> platforms

The currently known platforms.

newplatforms

protected java.util.Map<IComponentIdentifier,java.util.List<TransportAddress>> newplatforms

The newly found platforms.

sendsocket

protected java.net.DatagramSocket sendsocket

The socket to send.

recvsocket

protected java.net.DatagramSocket recvsocket

The socket to receive.

Constructor Detail

LocalNetworkAwarenessBaseAgent

public LocalNetworkAwarenessBaseAgent()

Method Detail

init

public void init()
          throws java.lang.Exception

At startup create a multicast socket for listening.

Throws:

java.lang.Exception

shutdown

public void shutdown()
              throws java.lang.Exception

Stop the service.

Throws:

java.lang.Exception

searchPlatforms

public IIntermediateFuture<IComponentIdentifier> searchPlatforms()

Try to find other platforms and finish after timeout. Immediately returns known platforms and concurrently issues a new search, waiting for replies until the timeout.

Specified by:

searchPlatforms in interface IAwarenessService

getPlatformAddresses

public IFuture<java.util.List<TransportAddress>> getPlatformAddresses(IComponentIdentifier platformid)

Gets the address for a platform ID using the awareness mechanism.

Specified by:

getPlatformAddresses in interface IAwarenessService

Parameters:

platformid - The platform ID.

Returns:

The transport addresses or null if not available.

sendInfo

protected IFuture<java.lang.Void> sendInfo(java.lang.String address,
                                           int port)

Send address info to a given multi or unicast address.