Module com.aoindustries.noc.monitor.impl

Package com.aoindustries.noc.monitor

Class RootNodeImpl

java.lang.Object

java.rmi.server.RemoteObject

java.rmi.server.RemoteServer

java.rmi.server.UnicastRemoteObject

com.aoindustries.noc.monitor.NodeImpl

com.aoindustries.noc.monitor.RootNodeImpl

All Implemented Interfaces:

Node, RootNode, Serializable, Remote

public class RootNodeImpl
extends NodeImpl
implements RootNode

The top-level node has one child for each of the servers.

There is no stop here because root nodes keep running forever in the background to be reconnected to. The overhead of this is reduced by using workers and only creating one rootNode per user.

Author:

AO Industries, Inc.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
AoservConnector	conn
static Executors	executors	One thread pool is shared by all components, and it is never disposed.
static Random	fastRandom	A fast pseudo-random number generator for non-cryptographic purposes.
Locale	locale

Fields inherited from class com.aoindustries.noc.monitor.NodeImpl

csf, port, ssf

Fields inherited from class java.rmi.server.RemoteObject

ref

Method Summary

Modifier and Type	Method	Description
void	addTreeListener(TreeListener treeListener)
AlertCategory	getAlertCategory()	Defaults to the alert category of the parent node.
AlertLevel	getAlertLevel()	The alert level is equal to the highest alert level of its children.
String	getAlertMessage()	No alert messages.
boolean	getAllowsChildren()
List<NodeImpl>	getChildren()
String	getLabel()
static int	getNextStartupDelayFifteenMinutes()
NodeImpl	getParent()
File	getPersistenceDirectory()	Gets the top-level persistence directory.
NodeSnapshot	getSnapshot()
File	mkdir(File dir)	Creates a directory if not exists, throwing an exception when is not a directory or unable to create.
void	nodeAdded()	Notifies all of the listeners.
void	nodeAlertLevelChanged(NodeImpl node, AlertLevel oldAlertLevel, AlertLevel newAlertLevel, String alertMessage)	Uses the AlertCategory of the node for both oldAlertCategory and newAlertCategory.
void	nodeRemoved()	Notifies all of the listeners.
void	removeTreeListener(TreeListener treeListener)
static Future<?>	schedule(Runnable task, long delay)	Schedules a task to be performed in the future.

Methods inherited from class com.aoindustries.noc.monitor.NodeImpl

constrainAlertLevel, getMaxAlertLevel, getSnapshot, getSnapshot, getSnapshot, getSnapshot, getSnapshot, getSnapshot, toString

Methods inherited from class java.rmi.server.UnicastRemoteObject

clone, exportObject, exportObject, exportObject, exportObject, exportObject, unexportObject

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toStub

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

fastRandom

public static final Random fastRandom

A fast pseudo-random number generator for non-cryptographic purposes.

executors

public static final Executors executors

One thread pool is shared by all components, and it is never disposed.

locale

public final Locale locale

conn

public final AoservConnector conn

Method Detail

schedule

public static Future<?> schedule(Runnable task,
                                 long delay)

Schedules a task to be performed in the future. It will be performed in a background thread via the ExecutorService.

getParent

public NodeImpl getParent()

Specified by:

getParent in interface Node

Specified by:

getParent in class NodeImpl

getAllowsChildren

public boolean getAllowsChildren()

Specified by:

getAllowsChildren in interface Node

Specified by:

getAllowsChildren in class NodeImpl

getChildren

public List<NodeImpl> getChildren()

Specified by:

getChildren in interface Node

Specified by:

getChildren in class NodeImpl

getAlertLevel

public AlertLevel getAlertLevel()

The alert level is equal to the highest alert level of its children.

Specified by:

getAlertLevel in interface Node

Specified by:

getAlertLevel in class NodeImpl

See Also:

NodeImpl.constrainAlertLevel(com.aoindustries.noc.monitor.common.AlertLevel)

getAlertMessage

public String getAlertMessage()

No alert messages.

Specified by:

getAlertMessage in interface Node

Specified by:

getAlertMessage in class NodeImpl

getAlertCategory

public AlertCategory getAlertCategory()

Description copied from class: NodeImpl

Defaults to the alert category of the parent node.

Specified by:

getAlertCategory in interface Node

Overrides:

getAlertCategory in class NodeImpl

See Also:

NodeImpl.getParent()

getLabel

public String getLabel()

Specified by:

getLabel in interface Node

Specified by:

getLabel in class NodeImpl

addTreeListener

public void addTreeListener(TreeListener treeListener)

Specified by:

addTreeListener in interface RootNode

removeTreeListener

public void removeTreeListener(TreeListener treeListener)

Specified by:

removeTreeListener in interface RootNode

nodeAdded

public void nodeAdded()

Notifies all of the listeners. Batches the calls into a per-listener background task. Each of the background tasks may send one event representing any number of changes. Each background task will wait 250 ms between each send.

nodeRemoved

public void nodeRemoved()

Notifies all of the listeners. Batches the calls into a per-listener background task. Each of the background tasks may send one event representing any number of changes. Each background task will wait 250 ms between each send.

nodeAlertLevelChanged

public void nodeAlertLevelChanged(NodeImpl node,
                                  AlertLevel oldAlertLevel,
                                  AlertLevel newAlertLevel,
                                  String alertMessage)
                           throws RemoteException

Uses the AlertCategory of the node for both oldAlertCategory and newAlertCategory.

Throws:

RemoteException

See Also:

nodeAlertLevelChanged(com.aoindustries.noc.monitor.NodeImpl, com.aoindustries.noc.monitor.common.AlertLevel, com.aoindustries.noc.monitor.common.AlertLevel, java.lang.String)

getSnapshot

public NodeSnapshot getSnapshot()
                         throws RemoteException

Specified by:

getSnapshot in interface RootNode

Throws:

RemoteException

mkdir

public File mkdir(File dir)
           throws IOException

Creates a directory if not exists, throwing an exception when is not a directory or unable to create.

Throws:

IOException

getPersistenceDirectory

public File getPersistenceDirectory()
                             throws IOException

Gets the top-level persistence directory.

Throws:

IOException

getNextStartupDelayFifteenMinutes

public static int getNextStartupDelayFifteenMinutes()