org.opennms.netmgt.poller.monitors
Class ImapMonitor

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

All Implemented Interfaces:

ServiceMonitor

@Distributable
public final class ImapMonitor
extends IPv4Monitor

This class is designed to be used by the service poller framework to test the availability of the IMAP service on remote interfaces. The class implements the ServiceMonitor interface that allows it to be used along with other plug-ins by the service poller framework.

Version:

CVS 1.1.1.1

Author:

Tarus Balog , Sowmya Nataraj , Mike Davidson , OpenNMS , Tarus Balog , Sowmya Nataraj , Mike Davidson , OpenNMS , Tarus Balog , Sowmya Nataraj , Mike Davidson , OpenNMS , Tarus Balog , Sowmya Nataraj , Mike Davidson , OpenNMS

Constructor Summary

ImapMonitor()

Method Summary

PollStatus

poll(MonitoredService svc, Map<String,Object> parameters) This method is the heart of the plug-in monitor.

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

ImapMonitor

public ImapMonitor()

Method Detail

poll

public PollStatus poll(MonitoredService svc,
                       Map<String,Object> parameters)

This method is the heart of the plug-in monitor. Each time an interface requires a check to be performed as defined by the scheduler the poll method is invoked. The poll is passed the interface to check

By default when the status transition from up to down or vice versa the framework will generate an event. Additionally, if the polling interval changes due to an extended unavailability, the framework will generate an additional down event. The plug-in can suppress the generation of the default events by setting the suppress event bit in the returned integer.

Poll the specified address for IMAP service availability.

During the poll an attempt is made to connect on the specified port (by default TCP port 143). If the connection request is successful, the banner line generated by the interface is parsed and if it starts with a '* OK , it indicates that we are talking to an IMAP server and we continue. Next, a 'LOGOUT' command is sent to the interface. Again the response is parsed and the response is verified to see that we get a '* OK'. If the interface's response is valid we set the service status to SERVICE_AVAILABLE and return.

Specified by:

poll in interface ServiceMonitor

Specified by:

poll in class IPv4Monitor

Parameters:

svc - TODO

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

Returns:

The availability of the interface and if a transition event should be suppressed.

See Also:

PollStatus.SERVICE_AVAILABLE, PollStatus.SERVICE_UNAVAILABLE, PollStatus.SERVICE_AVAILABLE, PollStatus.SERVICE_UNAVAILABLE