org.apache.uima.collection.impl.cpm.container.deployer.vns

Class VNSQuery

java.lang.Object

org.apache.uima.collection.impl.cpm.container.deployer.vns.VNSQuery

public class VNSQuery
extends Object

Connects to and querries a given VNS server for a list a services bound to a given name.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	VNSQuery.VinciVNSQuery Inner class used for accessing the VNS server.

Constructor Summary

Constructors

Constructor and Description
VNSQuery(String aVnsHost, int aVnsPort) Connects to a VNS server identified by host and port

Method Summary

Modifier and Type	Method and Description
static int	findUnassigned(ArrayList oldList, ArrayList newList) Diffs two lists of services and returns those that have not yet been assigned
ArrayList	getServices(String aName) Returns a list of services registered in the VNS and bound to a given name.
ArrayList	getUnassignedServices(String aName, ArrayList assignedServices) Returns a list of services that have not yet been assigned to any CPM proxy.
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

VNSQuery

public VNSQuery(String aVnsHost,
                int aVnsPort)
         throws Exception

Connects to a VNS server identified by host and port

Parameters:

aVnsHost - - VNS host name

aVnsPort - - VNS port number

Throws:

Exception - - when unable to connect to VNS

Method Detail

getServices

public ArrayList getServices(String aName)
                      throws Exception

Returns a list of services registered in the VNS and bound to a given name.

Parameters:

aName - - name of the service

Returns:

- ArrayList of VinciServiceInfo instances

Throws:

Exception - - unable to get a list

getUnassignedServices

public ArrayList getUnassignedServices(String aName,
                                       ArrayList assignedServices)
                                throws Exception

Returns a list of services that have not yet been assigned to any CPM proxy. It diffs the current list and a new list as returned from the VNS.

Parameters:

aName - - name of the service

assignedServices - - a list of services currently in use

Returns:

- ArrayList of VinciServiceInfo instances

Throws:

Exception - - unable to get a list

findUnassigned

public static int findUnassigned(ArrayList oldList,
                                 ArrayList newList)

Diffs two lists of services and returns those that have not yet been assigned

Parameters:

oldList - - current (in-use) list of services

newList - - new list of services

Returns:

- number of un-assigned services

main

public static void main(String[] args)