org.opennms.netmgt.poller
Class IPv4Monitor
java.lang.Object
org.opennms.netmgt.poller.IPv4Monitor
- All Implemented Interfaces:
- ServiceMonitor
- Direct Known Subclasses:
- DominoIIOPMonitor, LdapMonitor, SmbMonitor, SnmpMonitor
- abstract class IPv4Monitor
- extends java.lang.Object
- implements ServiceMonitor
This class provides a basic implementation for most of the interface
methods of the ServiceMonitor
class. Since most pollers do not
do any special initialization, and only require that the interface is an
InetAddress
object this class provides eveything by the
poll interface.
- Author:
- Mike, Weave, OpenNMS
Method Summary |
void |
initialize(java.util.Map parameters)
This method is called after the framework creates an
instance of the plug-in. |
void |
initialize(NetworkInterface iface)
This method is called whenever a new interface that supports the
plug-in service is added to the scheduling system. |
void |
release()
This method is called whenever the plug-in is being unloaded, normally
during framework exit. |
void |
release(NetworkInterface iface)
This method is the called whenever an interface is being removed from
the scheduler. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
IPv4Monitor
IPv4Monitor()
initialize
public void initialize(java.util.Map parameters)
This method is called after the framework creates an
instance of the plug-in. The framework passes the object a proxy
object that can be used to retreive configuration information
specific to the plug-in. Additionally, any parameters for the
plug-in from the package definition are passed using the
parameters element.
If there is a critical error, like missing service libraries, the
the montior may throw a ServiceMonitorException. If the plug-in
throws an exception then the plug-in will be disabled in the
framework.
- Specified by:
initialize
in interface ServiceMonitor
- Parameters:
parameters
- Not currently used
- Throws:
java.lang.RuntimeException
- Thrown if
an unrecoverable error occurs that prevents the plug-in from functioning.
release
public void release()
This method is called whenever the plug-in is being unloaded, normally
during framework exit. During this time the framework may release any
resource and save any state information using the proxy object from the
initialization routine.
Even if the plug-in throws a monitor exception, it will not prevent
the plug-in from being unloaded. The plug-in should not return until all
of its state information is saved. Once the plug-in returns from this
call its configuration proxy object is considered invalid.
- Specified by:
release
in interface ServiceMonitor
- Throws:
java.lang.RuntimeException
- Thrown if an error occurs
during deallocation.
initialize
public void initialize(NetworkInterface iface)
This method is called whenever a new interface that supports the
plug-in service is added to the scheduling system. The plug-in has the
option to load and/or associate configuration information with the
interface before the framework begins scheduling the new device.
Should a monitor exception be thrown during an initialization call
then the framework will log an error and discard the interface from
scheduling.
- Specified by:
initialize
in interface ServiceMonitor
- Parameters:
iface
- The network interface to be added to the scheduler.
- Throws:
java.lang.RuntimeException
- Thrown if an unrecoverable error
occurs that prevents the interface from being monitored.
NetworkInterfaceNotSupportedException
- Thrown
if the passed interface is invalid for this monitor.
release
public void release(NetworkInterface iface)
This method is the called whenever an interface is being removed from
the scheduler. For example, if a service is determined as being no longer
supported then this method will be invoked to cleanup any information
associated with this device. This gives the implementor of the interface
the ability to serialize any data prior to the interface being discarded.
If an exception is thrown during the release the exception will be
logged, but the interface will still be discarded for garbage collection.
- Specified by:
release
in interface ServiceMonitor
- Parameters:
iface
- The network interface that was being monitored.
- Throws:
java.lang.RuntimeException
- Thrown if an unrecoverable error
occurs that prevents the interface from being monitored.
Generated by eevans on November 12 2004 1715.