org.mbari.siam.operations.portal
Class Portal

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          java.rmi.server.UnicastRemoteObject
              org.mbari.siam.operations.portal.Portal

All Implemented Interfaces:

java.io.Serializable, java.rmi.Remote, PortalInterface

public class Portal
extends java.rmi.server.UnicastRemoteObject
implements PortalInterface

Portal is the "gateway" between clients on the local network, and a remote node server located on the far side of a low-bandwidth/intermittent connection.

When a communications link to the node is available, the Portal attempts to retrieve data from the node's sensors. The retrieved packets are then distributed to shore clients, as well as saved in a file buffer. The Portal keeps track of which packets it has retrieved from each sensor; on subsequent retrievals it requests the "latest" data from the sensor.

Author:

Tom O'Reilly

See Also:

Serialized Form

Field Summary

Fields inherited from class java.rmi.server.RemoteObject

ref

Constructor Summary

Portal(java.lang.String[] primaryNodeNames, long startRetrieveTime, boolean publishPackets, java.lang.String logDirectory, boolean doProfile, boolean doWDT, java.util.Vector preferredNodes, boolean resumeStreams)
Construct Portal for specified node.

Method Summary

protected void	getProperties() Look for System property "leaseTime", "readTimeout", "downloadInterval", and "systemCommand"
static void	main(java.lang.String[] args)
void	nodeLinkNotify(java.net.InetAddress remoteAddr, boolean connected) Notify PortalConnections that network link has come up/down
boolean	primaryLinkConnected(java.net.InetAddress address) Return true if portal has network connection to specified primary node.
void	run() Wait for and accept new client connection; add new client to list of clients.

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Portal

public Portal(java.lang.String[] primaryNodeNames,
              long startRetrieveTime,
              boolean publishPackets,
              java.lang.String logDirectory,
              boolean doProfile,
              boolean doWDT,
              java.util.Vector preferredNodes,
              boolean resumeStreams)
       throws java.rmi.RemoteException,
              java.net.UnknownHostException,
              java.io.IOException,
              java.lang.Exception

Construct Portal for specified node.

Throws:

java.rmi.RemoteException

java.net.UnknownHostException

java.io.IOException

java.lang.Exception

Method Detail

run

public void run()

Wait for and accept new client connection; add new client to list of clients.

getProperties

protected void getProperties()

Look for System property "leaseTime", "readTimeout", "downloadInterval", and "systemCommand"

nodeLinkNotify

public void nodeLinkNotify(java.net.InetAddress remoteAddr,
                           boolean connected)

Notify PortalConnections that network link has come up/down

Specified by:

nodeLinkNotify in interface PortalInterface

primaryLinkConnected

public boolean primaryLinkConnected(java.net.InetAddress address)
                             throws java.rmi.RemoteException,
                                    java.lang.Exception

Return true if portal has network connection to specified primary node.

Specified by:

primaryLinkConnected in interface PortalInterface

Throws:

java.rmi.RemoteException

java.lang.Exception

main

public static void main(java.lang.String[] args)