uk.ac.ncl.cs.instantsoap.strategydp.impl
Class QueuedDispatcher

java.lang.Object
  uk.ac.ncl.cs.instantsoap.strategydp.impl.QueuedDispatcher

All Implemented Interfaces:

StrategyDispatcher

public class QueuedDispatcher
extends Object
implements StrategyDispatcher

Asynchronously dispatches jobs to an underlying dispatcher, using an ExecutorService to manage the running of the tasks.

Author:

Matthew Pocock

Nested Class Summary

Nested classes/interfaces inherited from interface uk.ac.ncl.cs.instantsoap.strategydp.StrategyDispatcher

StrategyDispatcher.ValidatedJob

Constructor Summary

QueuedDispatcher(StrategyDispatcher delegate, LoggingQueue<UUID> queue)

Method Summary

MetaData	describeApplication(String application)
Set<MetaData>	getInputs(String application)
Set<MetaData>	getOutputs(String application)
boolean	handlesApplication(String application)
List<String>	listApplications()
StrategyDispatcher.ValidatedJob	validateJob(JobSpecification specification) Ensure that the jobManager specification can be dispatched.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueuedDispatcher

public QueuedDispatcher(StrategyDispatcher delegate,
                        LoggingQueue<UUID> queue)

Method Detail

handlesApplication

public boolean handlesApplication(String application)

Specified by:

handlesApplication in interface StrategyDispatcher

listApplications

public List<String> listApplications()

Specified by:

listApplications in interface StrategyDispatcher

describeApplication

public MetaData describeApplication(String application)
                             throws UnknownApplicationException

Specified by:

describeApplication in interface StrategyDispatcher

Throws:

UnknownApplicationException

getInputs

public Set<MetaData> getInputs(String application)
                        throws UnknownApplicationException

Specified by:

getInputs in interface StrategyDispatcher

Throws:

UnknownApplicationException

getOutputs

public Set<MetaData> getOutputs(String application)
                         throws UnknownApplicationException

Specified by:

getOutputs in interface StrategyDispatcher

Throws:

UnknownApplicationException

validateJob

public StrategyDispatcher.ValidatedJob validateJob(JobSpecification specification)
                                            throws InvalidJobSpecificationException,
                                                   UnknownApplicationException

Description copied from interface: StrategyDispatcher

Ensure that the jobManager specification can be dispatched.

If there is no handler for this jobManager, or if it is malformed, then an InvalidJobSpecificationException should be raised. Otherwise, this should chain on to the right handler's validateJob() method. Once validated, this returns a ValidatedJob that can be used to run the jobManager specification any number of times.

Specified by:

validateJob in interface StrategyDispatcher

Parameters:

specification - the JobSpecification describing what to validate

Returns:

the validated job, ready to run

Throws:

InvalidJobSpecificationException - if the JobSpecification is not for something we can run, or if it is mal-formed in some way

UnknownApplicationException - if the application named by the specification is not known