org.opennms.netmgt.poller.monitors

Class DiskUsageMonitor

java.lang.Object

org.opennms.netmgt.poller.support.AbstractServiceMonitor

org.opennms.netmgt.poller.monitors.SnmpMonitorStrategy

org.opennms.netmgt.poller.monitors.DiskUsageMonitor

All Implemented Interfaces:

ServiceMonitor

public final class DiskUsageMonitor
extends SnmpMonitorStrategy

Check for disks via HOST-RESOURCES-MIB. This should be extended to support BOTH UCD-SNMP-MIB and HOST-RESOURCES-MIB

This does SNMP and therefore relies on the SNMP configuration so it is not distributable.

Author:

Jason Aras, Ronald Roskens

Field Summary

Fields

Modifier and Type	Field and Description
static org.slf4j.Logger	LOG

Fields inherited from class org.opennms.netmgt.poller.monitors.SnmpMonitorStrategy

EQUALS, GREATER_THAN, GREATER_THAN_EQUALS, hex, LESS_THAN, LESS_THAN_EQUALS, MATCHES, NOT_EQUAL

Constructor Summary

Constructors

Constructor and Description
DiskUsageMonitor()

Method Summary

Modifier and Type	Method and Description
PollStatus	poll(MonitoredService svc, Map<String,Object> parameters) This method is the heart of the plug-in monitor.
String	serviceName() Returns the name of the service that the plug-in monitors ("DISK-USAGE").

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

getAgentConfig, getRuntimeAttributes, getStringValue, meetsCriteria

Methods inherited from class org.opennms.netmgt.poller.support.AbstractServiceMonitor

getEffectiveLocation, getKeyedBoolean, getKeyedInstance, getKeyedInteger, getKeyedLong, getKeyedObject, getKeyedString, getServiceProperties

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

DiskUsageMonitor

public DiskUsageMonitor()

Method Detail

serviceName

public String serviceName()

Returns the name of the service that the plug-in monitors ("DISK-USAGE").

Returns:

The service that the plug-in monitors.

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 service 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.

NOTE: This method may be invoked on a Minion, in which case certain bean and facilities will not be available. If any state related information is required such as agent related configuration, it should retrieved by the ServiceMonitor.getRuntimeAttributes(MonitoredService, Map).

The poll() method is responsible for polling the specified address for SNMP service availability.

Parameters:

svc -

parameters -

Returns:

PollStatus

Throws:

RuntimeException - Thrown for any unrecoverable errors.

See Also:

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