MibProxy based on table index

[Chris Paulsen]

Frank:


My class derived from MibProxy is forwarding get requests just fine, but I 
am still having trouble with get-next requests.

The problem is that I successfully traverse the first row from the first 
agent, but then only pick up the last column of the second agent because I 
am looking for the successor of the last element of the first row.

To illustrate an example of my traversal is below followed by a question:
Agent to contact is determined by first index.

<base>.<column>.<index 1>.<index 2>
--------------------- source 1 -------------------------------
<base>.2.1.1
<base>.3.1.1
<base>.4.1.1
------------------------------------------------------------------

--------------------- source 2 -------------------------------
<base>.4.2.1
------------------------------------------------------------------


My question is:
What is calling find_succ in my derived class and setting the input 
parameter id (the Oid to find the successor of)? I need to reset this input 
parameter for this function so that each sub-agent contacted is passed the 
same value for the first get-next request. I have tried setting the oid and 
value of lastNext to no avail.

I hope this makes sense. Any suggestions would be appreciated.


thanks,
    Chris





Agent to contact is determined by first index.

<base>.<column>.<index 1>.<index 2>
--------------------- source 1 -------------------------------
<base>.2.1.1
<base>.3.1.1
<base>.4.1.1
------------------------------------------------------------------

--------------------- source 2 -------------------------------
<base>.4.2.1
------------------------------------------------------------------


I have overriden find_succ in my derived class so that it changes the 
source after the first row/agent has been p


At 07:04 PM 10/24/00 +0200, Frank Fock wrote:
>Chris Paulsen wrote:
>
> > I'm trying to develop a  variant of the sample proxy agent for v1 and v2c
> > agents that goes to a different sub-agent based on the index into a table.
> > Only get and get-next requests are allowed on the sub-agents. Each subagent
> > would be bound to provide certain rows from the table. Is this possible?
> >
>
>Yes, if you can determine the subagent to ask by the index only.
>
> >
> > If anyone has any suggestions as to what MibProxy methods I would need to
> > override I would be very grateful?
>
>The method you mentioned below will do it.
>
> >
> > I was thinking of the following:
> >
> > 1. Derive class from MibProxy which takes additional parameters in the
> > constructor consisting of a map of the index portion of Oid and the
> > corresponding source.
> >
>
>OK.
>
> >
> > 2. Override get_request and find_succ so that they set the internal
> > 'source' for the MibProxy objects to the one specific for a given index.
> > Call the base class (MibProxy) methods get_request and find_succ from the
> > derived class.
>
>Good idea, but be careful with GETNEXT requests. How do you
>handle the transition from one subagent to the other? That may be
>difficult, depending on how the indexes can be distinguished.
>
> >
> > Does this sound like it should work and make sense? Does anyone have a more
> > elegant idea?
>
>It does.
>
>Best regards,
>Frank
>
>--
>Frank Fock - AGENT++
>Email: frank at fock.de
>Fax: +49 7195 177108

------------------------------------
Christopher Paulsen
Datalex
(formerly Sight & Sound Software)
------------------------------------
cpaulsen at sight-n-sound.com
Voice: 503.445.4271
Fax: 503.274.0939