Re: Help required for Custom Table Handler

2009/9/2 Sharad Vasista <[email protected]>:
> I have created a mib2c file for my Table using mib2c.create-dataset.conf


> Here the mib2c created function netsnmp_table_set_multi_add_default_row(...)
> is present, as well as a handler  named mteEvent*Table_handler(.....)
> But there is no implementation , just a return value as "return
> SNMP_ERR_NOERROR;" within the handler definition body.

The point about the 'dataset' helper is that almost all of the processing
is done by the helper chain handlers.   Values/rows are created via SET
requests, and the individual values are supplied by the dataset helper
itself.   There's rarely any need for the user-supplied handler to do anything
(and most dataset-based implementations might well omit the MIB-specific
handler altogether).

The downside is that working with individual column values is fairly
cumbersome.   That's one of the reasons why the disman/mteEvent*
code you mention has been superceded by the disman/event/*
implementation - which uses 'mib2c.table_data.conf' instead.
This still uses the helper handler to determine which row of the
table is required, but processes the columns of this row within the
MIB-specific handler.



> How do I map this to the mib2c file created using mib2c.create-dataset.conf
> . Basically I want to implement the custom handler for GET/ SET.

The first question is - where will the data for this table come from?
Presumably it won't be populated via SNMP SET requests (since the
objects are defined as "read-only").   But you've deleted all of the
descriptions, so it's impossible to tell what these objects might refer to.

Dave

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