org.cougaar.pizza.plugin
Class MatchmakerPlugin

java.lang.Object
  org.cougaar.util.GenericStateModelAdapter
      org.cougaar.core.blackboard.BlackboardClientComponent
          org.cougaar.core.plugin.ComponentPlugin
              org.cougaar.servicediscovery.plugin.SimpleMatchmakerPlugin
                  org.cougaar.pizza.plugin.MatchmakerPlugin

All Implemented Interfaces:

org.cougaar.core.blackboard.BlackboardClient, org.cougaar.core.component.Component, org.cougaar.util.GenericStateModel, org.cougaar.core.plugin.PluginBase

public class MatchmakerPlugin

extends org.cougaar.servicediscovery.plugin.SimpleMatchmakerPlugin

The Matchmaker is responsible for taking service discovery requests (MMQueryRequests) from the SDClientPlugin, and issuing asynchronous queries to the YP to find matching providers. When one (or more) is found, send the scored results back the SDClient on the MMQueryRequest.

This version extends the SimpleMatchmakerPlugin, specifying that the Role requested will be in the pizza constants Constants.UDDIConstants.COMMERCIAL_SERVICE_SCHEME. As noted in the base class, it allows the YP to handle walking up YP communities as necessary. It does not handle quiescence, is not guaranteed to work with kills/restarts (persistence), only works with a distributed YP (using communities, not a single static instance), etc.

System Property:

org.cougaar.servicediscovery.plugin.SimpleMatchmakerQueryGracePeriod

(in minutes, default is 2) specifies how long to wait before YP query errors should be logged at ERROR instead of DEBUG.

Nested Class Summary

Nested classes inherited from class org.cougaar.servicediscovery.plugin.SimpleMatchmakerPlugin

org.cougaar.servicediscovery.plugin.SimpleMatchmakerPlugin.QueryAlarm

Nested classes inherited from class org.cougaar.core.blackboard.BlackboardClient

org.cougaar.core.blackboard.BlackboardClient.Local

Field Summary

Fields inherited from class org.cougaar.core.blackboard.BlackboardClientComponent

agentId, agentIdentificationService, alarmService, blackboard, blackboardClientName

Fields inherited from interface org.cougaar.core.plugin.PluginBase

INSERTION_POINT

Fields inherited from interface org.cougaar.util.GenericStateModel

ACTIVE, IDLE, LOADED, UNINITIALIZED, UNLOADED

Fields inherited from interface org.cougaar.core.blackboard.BlackboardClient

current

Constructor Summary

MatchmakerPlugin()

Method Summary

protected java.lang.String

getServiceSchemeForRoles() Return the UDDI Service Scheme that contains the Roles we will look for.

Methods inherited from class org.cougaar.servicediscovery.plugin.SimpleMatchmakerPlugin

execute, getWarningCutoffTime, handleException, handleResponse, load, setRegistryQueryService, setupSubscriptions, unload

Methods inherited from class org.cougaar.core.plugin.ComponentPlugin

getConfigFinder

Methods inherited from class org.cougaar.core.blackboard.BlackboardClientComponent

currentTimeMillis, cycle, getAgentIdentifier, getAlarmService, getBindingSite, getBlackboardClientName, getBlackboardService, getMessageAddress, getParameter, getParameters, getServiceBroker, halt, precycle, requestCycle, resume, setAgentIdentificationService, setAlarmService, setBindingSite, setBlackboardService, setParameter, setSchedulerService, setServiceBroker, setSuicideService, shouldExecute, start, stop, suspend, toString, wasAwakened

Methods inherited from class org.cougaar.util.GenericStateModelAdapter

getModelState, initialize, transitState

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cougaar.util.GenericStateModel

getModelState, halt, initialize, resume, start, stop, suspend

Constructor Detail

MatchmakerPlugin

public MatchmakerPlugin()

Method Detail

getServiceSchemeForRoles

protected java.lang.String getServiceSchemeForRoles()

Return the UDDI Service Scheme that contains the Roles we will look for. In this case, that is the Constants.UDDIConstants.COMMERCIAL_SERVICE_SCHEME.

This method is the only one we need to over-ride.

Returns:

UDDI Service Scheme to find Roles in