Conference azur::mcc

2495.0. "Help on Event Sink Design" by MINDER::BLOWERG () Thu Mar 05 1992 07:29

We are using the ULTRIX T1.2.4 DECmcc BMS and Developers toolkit.

We have implemented an event sink, however it currently resides within the
AM. This means that we can only run from a single UID on the management station
as separate AMs get started for each UID. Therefore we need to move it out 
into a separate process. I have read some notes concerning its implementation 
ie using MCC_LIBE_DETACH to start the process and then using a separate set of
events to manage the event sink. This does not seem to much of a problem.

My questions are a bit more fundamental.

Does any one have a pseudo code or real code example of a separate event
sink. ?

How do you link the event sink in with the kernel. Looking at the snmp am 
the sink doesnt get a new enrollment id.

From the frame work you don't have a main does that mean that you cannot use
the low level calls for the Sink to do the put_event. If you can use the low
level calls what framework do you need to put round the code to enable this.

any help would be gratefully received,

Thanks,
	Graham.
    

    There are 4 seperate examples of event sinks currently within the
    DECmcc platform development community. I will list them in order
    of maturity/stability; DNA4 AM, DNA5 AM, SNMP AM, Data Collector AM.
    
    I would suggest that you talk to Jean Lee about the DNA4/DNA5/Data
    Collector and Dan Carr about the SNMP. Either of these people can
    point you in the right direction.
    
    wally

>How do you link the event sink in with the kernel. Looking at the snmp am 
>the sink doesnt get a new enrollment id.

	The toolkit MM programming manual has a section that describes how
to use callable mcc.  This basically involves linking an image that isn't
an MM with the mcc kernel, thus making kernel services available to that image.
The image is linked essentially the same as if it were an MM.  In your
init code in main(), make a call to mcc_fw_init(), after this you're free to
use any services offered by the kernel including event_put and event_get.

    Thanks,
    	It works fine. 
    
    Graham