AM3270 Management Programming Manual

MANAGEMENT PROGRAMMING FOR AM3270
Communicating With the AM3270 Subsystem
To select event messages, you can write a filter that is specific
to your needs. If no filter is used, all event messages in the
log file are passed to the management application by the consumer
distributor. Figure 2-1 illustrates the flow of data between
the AM3270 subsystem and a management application in the EMS
environment. For AM3270-specific event management information,
refer to Section 7, "Event Management." For general event
management information, refer to the Event Management Service
(EMS) Manual .
Note that an operator can monitor events through VIEWPOINT.
Refer to the VIEWPOINT Manual for details.
COMMUNICATING WITH THE AM3270 SUBSYSTEM
A management application communicates with the AM3270 subsystem
by means of SCP or the EMS distributor process. When communicat-
ing with SCP or EMS, an application calls SPI procedures to
build messages to be sent to the subsystem and to retrieve
messages sent from the subsystem. However, to send and receive
SPI messages, and to establish and terminate communication with
SCP or the EMS distributor process, an application must use the
GUARDIAN 90 file system. How you use the GUARDIAN 90 file system
depends on the language in which your application is written.
If your application is written in TAL, you use the file-system
procedures directly to send and receive the SPI messages. If
your application is written in COBOL85--COBOL 74 does not support
SPI--you use the file-system procedures indirectly by invoking
them through COBOL85 verbs. If your application is written in
TACL, you use the file-system procedures indirectly by invoking
them through TACL built-ins.
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