org.opendaylight.vtn.manager.internal.flow.remove

Class ScanFlowRemover

java.lang.Object

org.opendaylight.vtn.manager.internal.flow.remove.ScanFlowRemover

All Implemented Interfaces:

FlowRemover

Direct Known Subclasses:

GlobalScanFlowRemover, TenantScanFlowRemover

public abstract class ScanFlowRemover
extends Object
implements FlowRemover

An implementation of FlowRemover which determines VTN data flows to be removed by a sequential scan.

Constructor Summary

Constructors

Constructor and Description
ScanFlowRemover()

Method Summary

Modifier and Type	Method and Description
protected abstract List<VtnFlowTable>	getFlowTables(org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction tx) Return a list of VTN flow tables to be scanned.
RemovedDataFlows<ScanFlowRemover>	removeDataFlow(TxContext ctx) Remove VTN data flows from the MD-SAL datastore.
protected abstract boolean	select(FlowCache fc) Determine whether the given data flow should be removed or not.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opendaylight.vtn.manager.internal.FlowRemover

getDescription

Constructor Detail

ScanFlowRemover

public ScanFlowRemover()

Method Detail

getFlowTables

protected abstract List<VtnFlowTable> getFlowTables(org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction tx)
                                             throws VTNException

Return a list of VTN flow tables to be scanned.

Parameters:

tx - A ReadWriteTransaction instance.

Returns:

A list of VTN flow tables.

Throws:

VTNException - An error occurred.

select

protected abstract boolean select(FlowCache fc)
                           throws VTNException

Determine whether the given data flow should be removed or not.

Parameters:

fc - A FlowCache instance.

Returns:

true if the given data flow should be removed. Otherwise false.

Throws:

VTNException - An error occurred.

removeDataFlow

public final RemovedDataFlows<ScanFlowRemover> removeDataFlow(TxContext ctx)
                                                       throws VTNException

Remove VTN data flows from the MD-SAL datastore.

Specified by:

removeDataFlow in interface FlowRemover

Parameters:

ctx - A runtime context for transaction task.

Returns:

A RemovedFlows instance which represents removed flow entries.

Throws:

VTNException - An error occurred.