org.opennms.netmgt.poller.monitors
Class IPv4Monitor
java.lang.Object
org.opennms.netmgt.poller.monitors.IPv4Monitor
- All Implemented Interfaces:
- ServiceMonitor
- Direct Known Subclasses:
- DominoIIOPMonitor, LdapMonitor, SmbMonitor, SnmpMonitor
- public 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(NetworkInterface iface)
This method is called whenever a new interface that supports the plug-in
service is added to the scheduling system. |
void |
initialize(PollerConfig pollerConfig,
java.util.Map parameters)
This method is called after the framework creates an instance of the
plug-in. |
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
public IPv4Monitor()
initialize
public void initialize(PollerConfig pollerConfig,
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 May 29 2005 2015.