org.opendaylight.bgpcep.bgp.topology.provider

Class AbstractTopologyBuilder<T extends Route>

java.lang.Object

org.opendaylight.bgpcep.bgp.topology.provider.AbstractTopologyBuilder<T>

All Implemented Interfaces:

EventListener, TopologyReference, org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener<T>, org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener<T>, org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener, InstanceReference<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology>

Direct Known Subclasses:

Ipv4ReachabilityTopologyBuilder, Ipv6ReachabilityTopologyBuilder, LinkstateTopologyBuilder

public abstract class AbstractTopologyBuilder<T extends Route>
extends Object
implements org.opendaylight.controller.md.sal.binding.api.ClusteredDataTreeChangeListener<T>, TopologyReference, org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener

Field Summary

Fields

Modifier and Type	Field and Description
protected int	listenerScheduledRestartEnforceCounter
protected long	listenerScheduledRestartTime

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractTopologyBuilder(org.opendaylight.controller.md.sal.binding.api.DataBroker dataProvider, RibReference locRibReference, org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId topologyId, org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes types, Class<? extends AddressFamily> afi, Class<? extends SubsequentAddressFamily> safi)
protected	AbstractTopologyBuilder(org.opendaylight.controller.md.sal.binding.api.DataBroker dataProvider, RibReference locRibReference, org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId topologyId, org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes types, Class<? extends AddressFamily> afi, Class<? extends SubsequentAddressFamily> safi, long listenerResetLimitInMillsec, int listenerResetEnforceCounter)

Method Summary

Modifier and Type	Method and Description
protected abstract void	clearTopology()
com.google.common.util.concurrent.FluentFuture<? extends org.opendaylight.mdsal.common.api.CommitInfo>	close()
protected abstract void	createObject(org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction trans, org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T> id, T value)
org.opendaylight.yangtools.yang.binding.InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology>	getInstanceIdentifier() Returns the InstanceIdentifier of the object.
protected abstract org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T>	getRouteWildcard(org.opendaylight.yangtools.yang.binding.InstanceIdentifier<Tables> tablesId)
void	onDataTreeChanged(Collection<org.opendaylight.controller.md.sal.binding.api.DataTreeModification<T>> changes)
void	onTransactionChainFailed(org.opendaylight.controller.md.sal.common.api.data.TransactionChain<?,?> transactionChain, org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction<?,?> transaction, Throwable cause)
void	onTransactionChainSuccessful(org.opendaylight.controller.md.sal.common.api.data.TransactionChain<?,?> transactionChain)
protected abstract void	removeObject(org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction trans, org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T> id, T value)
protected void	resetListener() Reset the data change listener to its initial status.
protected void	resetTransactionChain() Reset the transaction chain only so that the PingPong transaction chain will become usable again.
protected boolean	restartTransactionChainOnDemand() There are a few reasons we want to schedule a listener restart in a delayed manner: 1.
protected void	routeChanged(org.opendaylight.controller.md.sal.binding.api.DataTreeModification<T> change, org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction trans)
protected void	scheduleListenerRestart()
void	start()

Methods inherited from class java.lang.Object

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

Field Detail

listenerScheduledRestartTime

protected long listenerScheduledRestartTime

listenerScheduledRestartEnforceCounter

protected int listenerScheduledRestartEnforceCounter

Constructor Detail

AbstractTopologyBuilder

protected AbstractTopologyBuilder(org.opendaylight.controller.md.sal.binding.api.DataBroker dataProvider,
                                  RibReference locRibReference,
                                  org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId topologyId,
                                  org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes types,
                                  Class<? extends AddressFamily> afi,
                                  Class<? extends SubsequentAddressFamily> safi,
                                  long listenerResetLimitInMillsec,
                                  int listenerResetEnforceCounter)

AbstractTopologyBuilder

protected AbstractTopologyBuilder(org.opendaylight.controller.md.sal.binding.api.DataBroker dataProvider,
                                  RibReference locRibReference,
                                  org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.TopologyId topologyId,
                                  org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.TopologyTypes types,
                                  Class<? extends AddressFamily> afi,
                                  Class<? extends SubsequentAddressFamily> safi)

Method Detail

start

public final void start()

getRouteWildcard

protected abstract org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T> getRouteWildcard(org.opendaylight.yangtools.yang.binding.InstanceIdentifier<Tables> tablesId)

createObject

protected abstract void createObject(org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction trans,
                                     org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T> id,
                                     T value)

removeObject

protected abstract void removeObject(org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction trans,
                                     org.opendaylight.yangtools.yang.binding.InstanceIdentifier<T> id,
                                     T value)

clearTopology

protected abstract void clearTopology()

getInstanceIdentifier

public final org.opendaylight.yangtools.yang.binding.InstanceIdentifier<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology> getInstanceIdentifier()

Description copied from interface: InstanceReference

Returns the InstanceIdentifier of the object.

Specified by:

getInstanceIdentifier in interface InstanceReference<org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology>

Returns:

instance identifier

close

public final com.google.common.util.concurrent.FluentFuture<? extends org.opendaylight.mdsal.common.api.CommitInfo> close()

onDataTreeChanged

public void onDataTreeChanged(Collection<org.opendaylight.controller.md.sal.binding.api.DataTreeModification<T>> changes)

Specified by:

onDataTreeChanged in interface org.opendaylight.controller.md.sal.binding.api.DataTreeChangeListener<T extends Route>

routeChanged

protected void routeChanged(org.opendaylight.controller.md.sal.binding.api.DataTreeModification<T> change,
                            org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction trans)

resetListener

protected void resetListener()

Reset the data change listener to its initial status. By resetting the listener we will be able to recover all the data lost before

resetTransactionChain

protected void resetTransactionChain()

Reset the transaction chain only so that the PingPong transaction chain will become usable again. However, there will be data loss if we do not apply the previous failed transaction again

restartTransactionChainOnDemand

protected boolean restartTransactionChainOnDemand()

There are a few reasons we want to schedule a listener restart in a delayed manner: 1. we should avoid restarting the listener as when the topology is big, there might be huge overhead rebuilding the whole linkstate topology again and again 2. the #onTransactionChainFailed() normally get invoked after a delay. During that time gap, more data changes might still be pushed to #onDataTreeChanged(). And because #onTransactionChainFailed() is not invoked yet, listener restart/transaction chain restart is not done. Thus the new changes will still cause error and another #onTransactionChainFailed() might be invoked later. The listener will be restarted again in that case, which is unexpected. Restarting of transaction chain only introduce little overhead and it's okay to be restarted within a small time window. Note: when the listener is restarted, we can disregard all the incoming data changes before the restart is done, as after the listener unregister/reregister, the first #onDataTreeChanged() call will contain the a complete set of existing changes

Returns:

if the listener get restarted, return true; otherwise false

scheduleListenerRestart

protected void scheduleListenerRestart()

onTransactionChainFailed

public final void onTransactionChainFailed(org.opendaylight.controller.md.sal.common.api.data.TransactionChain<?,?> transactionChain,
                                           org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction<?,?> transaction,
                                           Throwable cause)

Specified by:

onTransactionChainFailed in interface org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener

onTransactionChainSuccessful

public final void onTransactionChainSuccessful(org.opendaylight.controller.md.sal.common.api.data.TransactionChain<?,?> transactionChain)

Specified by:

onTransactionChainSuccessful in interface org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener