HP (Hewlett-Packard) HP OpenView Vantagepoint – Operation Manual for UNIX User Manual

Using the VPO Application Programming Interfaces

The following interfaces to VPO can be accessed by way of the Interface
API:

Server Message Stream Interface Enables VPO messages to be output

from the server message stream to an
external application.

Agent Message Stream Interface

Enables VPO messages to be output
from the agent message stream to an
external application.

Legacy Link Interface

Provides a link between VPO and
managed nodes for which VPO agents
are not currently available.

Application Response Interface

Allows external applications to
receive application responses from
VPO applications that have been
started.

Message Event Interface

Allows external applications to
receive message events to display
VPO messages, for example in a GUI.

The same API, the Interface API, is used for all interfaces. The interface
type must be specified as a parameter of the API function call to
distinguish between the various interfaces.

Figure 4-3 on page 172 shows how the VPO Interfaces interact with the
internal message stream of the VPO management server and managed
nodes. Messages are received into the internal message stream,
processed, then stored in the message database and displayed in the
Message Browsers of the GUI. The VPO Interfaces on the management
server are ordered from left to right to show that they tap the internal
message stream at different points, and that they can interact in
different ways.