Data acquisition
Each probe uses a different method to acquire data. Which method the probe uses depends on the target system from which it receives data.
The Probe for HP Operations Manager acquires event data as it is generated by the HP Operations Manager (HPOM) server. Once processed, the alert is forwarded to the ObjectServer.
The
probe makes two connections on separate threads. Both connections
are made using the OPC library function opcif_open()
.
The probe connects to two interface instances as follows:
- An instance of the Message Stream Interface (MSI) is connected
using the OPCSVIF_EXTMSGPROC_READ interface type.
This type is used by external message processes. Note: The Probe for HP Operations Manager must be installed on the same server as the HPOM server where messages are being configured to be copied to the MSI server.
- An instance of the Message Event Interface (MEI) is connected using the OPCSVIF_MSG_EVENTS interface type. This type is used by external message logging and processing tools. The MEI connection receives annotations, acknowledgements done to events in the HPOM database, and notifications of duplicate messages.
Data acquisition is described in the following topics: