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java.lang.Objectorg.opennms.netmgt.poller.monitors.IPv4LatencyMonitor
org.opennms.netmgt.poller.monitors.NtpMonitor
This class is designed to be used by the service poller framework to test the availability of the NTP 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.
Field Summary | |
private static int |
DEFAULT_PORT
Default NTP port. |
private static int |
DEFAULT_RETRY
Default retries. |
private static int |
DEFAULT_TIMEOUT
Default timeout. |
Fields inherited from class org.opennms.netmgt.poller.monitors.IPv4LatencyMonitor |
DS_NAME |
Fields inherited from interface org.opennms.netmgt.poller.monitors.ServiceMonitor |
SERVICE_AVAILABLE, SERVICE_STATUS_MASK, SERVICE_UNAVAILABLE, SERVICE_UNKNOWN, SERVICE_UNRESPONSIVE, SURPRESS_EVENT_MASK |
Constructor Summary | |
NtpMonitor()
|
Method Summary | |
int |
poll(NetworkInterface iface,
java.util.Map parameters,
Package pkg)
Poll the specified address for NTP service availability. |
Methods inherited from class org.opennms.netmgt.poller.monitors.IPv4LatencyMonitor |
createRRD, initialize, initialize, release, release, updateRRD |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
private static final int DEFAULT_PORT
private static final int DEFAULT_RETRY
private static final int DEFAULT_TIMEOUT
Constructor Detail |
public NtpMonitor()
Method Detail |
public int poll(NetworkInterface iface, java.util.Map parameters, Package pkg)
Poll the specified address for NTP service availability.
During the poll an NTP request query packet is generated. The query is sent via UDP socket to the interface at the specified port (by default UDP port 123). If a response is received, it is parsed and validated. If the NTP was successful the service status is set to SERVICE_AVAILABLE and the method returns.
iface
- The network interface to test the service on.parameters
- The package parameters (timeout, retry, etc...) to be used for
this poll.
ServiceMonitor.SURPRESS_EVENT_MASK
,
ServiceMonitor.SERVICE_AVAILABLE
,
ServiceMonitor.SERVICE_UNAVAILABLE
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