Package uk.co.westhawk.snmp.beans

Class InterfaceIndexesBean

java.lang.Object

uk.co.westhawk.snmp.beans.SNMPBean

uk.co.westhawk.snmp.beans.SNMPRunBean

uk.co.westhawk.snmp.beans.InterfaceIndexesBean

All Implemented Interfaces:

Runnable, Observer

public class InterfaceIndexesBean
extends SNMPRunBean
implements Observer

This bean collects information about the number of interfaces on a system and their index.

The number is the number of network interfaces (regardless of their current state) present on this system. The number will remain the same untill the next time the SNMP server is restarted. The interfaces may go up and down while running.

The properties in the parent classes should be set, before calling the action() method. Via a PropertyChangeEvent the application/applet will be notified.

Version:

$Revision: 1.13 $ $Date: 2006/01/25 18:08:55 $

Author:

Birgit Arkesteijn

See Also:

• SNMPBean.setHost(java.lang.String)
• SNMPBean.setPort(int)
• SNMPBean.setCommunityName(java.lang.String)
• SNMPRunBean.setUpdateInterval(int)
• SNMPBean.addPropertyChangeListener(java.beans.PropertyChangeListener)
• SNMPBean.action()
• InterfaceGetNextPdu

Constructor Summary

Constructors

Constructor	Description
InterfaceIndexesBean()	The default constructor.
InterfaceIndexesBean(String h, int p)	The constructor that will set the host and the port no.
InterfaceIndexesBean(String h, int p, String b)	The constructor that will set the host, the port no and the local bind address.

Method Summary

Modifier and Type	Method	Description
void	action()	This method starts the action of the bean.
int	getInterfaceCount()	Returns the number of current interfaces.
Enumeration	getInterfaceIndexes()	Returns the indexes (as Strings) of the current interfaces (the list of ifIndex).
Set	getInterfaceIndexSet()	Returns the indexes (as Strings) of the current interfaces (the list of ifIndex).
Date	getLastUpdateDate()	Returns the date of the moment when this bean was last updated.
void	run()	Implements the running of the bean.
void	update(Observable obs, Object ov)	This method is called when the Pdu response is received.

Methods inherited from class uk.co.westhawk.snmp.beans.SNMPRunBean

getUpdateInterval, isRunning, setRunning, setUpdateInterval, setUpdateInterval

Methods inherited from class uk.co.westhawk.snmp.beans.SNMPBean

addPropertyChangeListener, getBindAddress, getCommunityName, getHost, getMessage, getPort, getSocketType, removePropertyChangeListener, setBindAddress, setCommunityName, setHost, setPort, setPort, setSocketType

Methods inherited from class java.lang.Object

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

Constructor Details

InterfaceIndexesBean

public InterfaceIndexesBean()

The default constructor.

InterfaceIndexesBean

public InterfaceIndexesBean(String h,
 int p)

The constructor that will set the host and the port no.

Parameters:

h - the hostname

p - the port no

See Also:

• SNMPBean.setHost(java.lang.String)
• SNMPBean.setPort(int)

InterfaceIndexesBean

public InterfaceIndexesBean(String h,
 int p,
 String b)

The constructor that will set the host, the port no and the local bind address.

Parameters:

h - the hostname

p - the port no

b - the local bind address

Since:

4_14

See Also:

• SNMPBean.setHost(java.lang.String)
• SNMPBean.setPort(int)
• SNMPBean.setBindAddress(java.lang.String)

Method Details

getLastUpdateDate

public Date getLastUpdateDate()

Returns the date of the moment when this bean was last updated. This might be null when the first time the update was not finished.

Returns:

the last update date

getInterfaceIndexes

public Enumeration getInterfaceIndexes()

Returns the indexes (as Strings) of the current interfaces (the list of ifIndex).

getInterfaceIndexSet

public Set getInterfaceIndexSet()

Returns the indexes (as Strings) of the current interfaces (the list of ifIndex).

Since:

4_14

getInterfaceCount

public int getInterfaceCount()

Returns the number of current interfaces.

action

public void action()

This method starts the action of the bean. It will initialises all variables before starting.

Specified by:

action in class SNMPBean

run

public void run()

Implements the running of the bean. It will send the Pdu, if the previous one is not still in flight.

Specified by:

run in interface Runnable

Specified by:

run in class SNMPRunBean

See Also:

• SNMPRunBean.isRunning()

update

public void update(Observable obs,
 Object ov)

This method is called when the Pdu response is received. When all answers are received it will fire the property change event. The answers are stored in a hashtable, this is done because the speed can only be calculated with the previous answer.

Specified by:

update in interface Observer

See Also:

• SNMPBean.addPropertyChangeListener(java.beans.PropertyChangeListener)