Class CollectorNetwork 

java.lang.Object
   |
   +----VisiModel.ATMNetwork
           |
           +----CollectorNetwork
public class CollectorNetwork
extends ATMNetwork
Collector-specific representation of an IP/ATM network.

Version:
$Revision: 1.9 $, $Date: 2000/10/31 20:32:02 $
Author:
Mike Spengler, Joseph Thomas

Variable Index

o addrs
o ca
Link back to CollectorAnalyzer
o currTime
The current CollectorUpdate time.
o dc
Link back to DataCollector
o locked
Lock to synchronize work queues when deleting/merging elements.
o lockedNode
o ms
The ModelUpdate storage manager.
o nodes
Cache of actively updating nodes.
o nWorkers
How many DataCollectorWorkers there are

Constructor Index

o CollectorNetwork(String, ConfigMgr, ModelStorage, DataCollector, CollectorAnalyzer, long)
Class constructor.

Method Index

o acquireLock(NodeAddress)
Test if lock can be acquired and do so if possible
o dumpState(FIFO)
Dumps the current state of this network.
o endCycle(NodeEnd)
Ends a collector node update cycle.
o findNode(NodeAddress)
Finds a node in the nework.
o getCachedNode(NodeAddress)
Gets a node from the active cache.
o getCurrTime()
Gets the current CollectorUpdate time.
o getLock()
Return status of lock
o matchInterface(NodeAddress, CollectorNode)
Check for interface with the address
o releaseLock()
Release lock
o replaceCachedNode(NodeAddress, CollectorNode)
Replaces a node in the active cache.
o startCycle(NodeBegin)
Starts a collector node update cycle.
o updateModel(CollectorUpdate)
Updates the network model using the supplied update object.

Variables

o currTime 
 private static long currTime
The current CollectorUpdate time.

o nodes 
 private CollectorNode nodes[]
Cache of actively updating nodes.

o addrs 
 private NodeAddress addrs[]
o ms 
 protected ModelStorage ms
The ModelUpdate storage manager.

o locked 
 private static boolean locked
Lock to synchronize work queues when deleting/merging elements.

o lockedNode 
 private static NodeAddress lockedNode
o dc 
 private DataCollector dc
Link back to DataCollector

o ca 
 private CollectorAnalyzer ca
Link back to CollectorAnalyzer

o nWorkers 
 private int nWorkers
How many DataCollectorWorkers there are

Constructors

o CollectorNetwork 
 public CollectorNetwork(String name,
                         ConfigMgr cm,
                         ModelStorage ms,
                         DataCollector dc,
                         CollectorAnalyzer ca,
                         long time)
Class constructor.

Parameters:
name - the network's name
cm - the configuration manager containing all configuration information for this run
ms - the ModelUpdate storage manager
time - the initial 'collector time'

Methods

o updateModel 
 public synchronized void updateModel(CollectorUpdate update)
Updates the network model using the supplied update object.

Parameters:
update - the update to be applied
o startCycle 
 public void startCycle(NodeBegin update)
Starts a collector node update cycle.

Parameters:
update - the update record starting the cycle
o matchInterface 
 private boolean matchInterface(NodeAddress addr,
                                CollectorNode node)
Check for interface with the address

Parameters:
addr - node address to match against
node - node to search interface table of
Returns:
boolean value indicating that this node has an interface with matching address
o endCycle 
 public void endCycle(NodeEnd update)
Ends a collector node update cycle.

Parameters:
update - the update record ending the cycle
o getCachedNode 
 public CollectorNode getCachedNode(NodeAddress addr)
Gets a node from the active cache.

Parameters:
addr - the address of a cached node
Returns:
the cached node
o replaceCachedNode 
 public void replaceCachedNode(NodeAddress addr,
                               CollectorNode node)
Replaces a node in the active cache.

Parameters:
addr - the address of a cached node
node - the new node for the specified address
o findNode 
 public CollectorNode findNode(NodeAddress addr)
Finds a node in the nework.

Parameters:
addr - the address of the node to find
Returns:
the existing node or null if not found
o dumpState 
 public void dumpState(FIFO f)
Dumps the current state of this network.

Parameters:
f - where to queue the ModelUpdate objects representing the model's current state
o getCurrTime 
 public static long getCurrTime()
Gets the current CollectorUpdate time.

Returns:
the current CollectorUpdate time
o acquireLock 
 private synchronized boolean acquireLock(NodeAddress node)
Test if lock can be acquired and do so if possible

Returns:
if lock was acquired
o getLock 
 public boolean getLock()
Return status of lock

Returns:
current lock status
o releaseLock 
 private void releaseLock()
Release lock