org.opennms.netmgt.poller.monitors
Class GpMonitor

java.lang.Object
  org.opennms.netmgt.poller.monitors.IPv4Monitor
      org.opennms.netmgt.poller.monitors.GpMonitor

All Implemented Interfaces:

ServiceMonitor

@Distributable(value=DAEMON)
public final class GpMonitor
extends IPv4Monitor

This class is designed to be used by the service poller framework to test the availability of a generic service by calling an external script or program. The external script or program will be passed two options: --hostname, the IP address of the host to be polled, and --timeout, the timeout in seconds. Additional options or arguments can be specified in the poller configuration.

Author:

Tarus Balog , Mike , Weave, OpenNMS , Bill Ayres

Constructor Summary

GpMonitor()

Method Summary

PollStatus

poll(MonitoredService svc, Map parameters) Poll the specified address for service availability.

Methods inherited from class org.opennms.netmgt.poller.monitors.IPv4Monitor

initialize, initialize, log, logDown, logDown, logUp, release, release

Methods inherited from class java.lang.Object

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

Constructor Detail

GpMonitor

public GpMonitor()

Method Detail

poll

public PollStatus poll(MonitoredService svc,
                       Map parameters)

Poll the specified address for service availability. During the poll an attempt is made to call the specified external script or program. If the connection request is successful, the banner line returned as standard output by the script or program is parsed for a partial match with the banner string specified in the poller configuration. Provided that the script's response is valid we set the service status to SERVICE_AVAILABLE and return. The timeout is handled by ExecRunner and is also passed as a parameter to the script or program being called.

Specified by:

poll in interface ServiceMonitor

Specified by:

poll in class IPv4Monitor

Parameters:

parameters - The package parameters (timeout, retry, etc...) to be used for this poll.

iface - The network interface to test the service on.

Returns:

The availibility of the interface and if a transition event should be supressed.

Throws:

RuntimeException - Thrown if the interface experiences error during the poll.

See Also:

PollStatus.SERVICE_AVAILABLE, PollStatus.SERVICE_UNAVAILABLE