Re: CreateAndGot(4) and CreateAndWait(5) problem

#1 (**permalink**) 09-06-2006

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Thank you for your detail description!
For the first question, I have tried netsnmp_insert_iterator_context. But
unfortunately, it doesn't work yet ----- I get NULL.
The related codes is list:

printf("\npeter--notePCTable_createEntry ----------begin\n");
table_row = notePCTable_createEntry(table_info->indexes->val.string,
*NumberTemp, UserTemp, *StatusTemp);
printf("\npeter--notePCTable_createEntry ----------end\n");
if (table_row)
{
/*printf("\npeter--netsnmp_insert_table_row ----------begin\n");
netsnmp_insert_table_row(request, table_row); //Here I insert a
row to table. But why I get a NULL in the following code?
printf("\npeter--netsnmp_insert_table_row ----------end\n");
*/
printf("\npeter--netsnmp_insert_iterator_context 111
----------begin\n");
netsnmp_insert_iterator_context (request, (void
*)table_row); //Here I insert a row to table. But why I get a NULL in the
following code?
printf("\npeter--netsnmp_insert_iterator_context ----------end\n");

table_entry = (struct notePCTable_entry *)
netsnmp_extract_iterator_context(request);
if (!table_entry)
{
printf("\ntable_entry is
NULL###########################################\n" );
}
else
{
printf("\n#######################table_entry is not
NULL###############################\n");
}
}
else
{
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_RESOURCEUNAVAILABLE);
return SNMP_ERR_NOERROR;
}

I wonder if there are some other things that I should do?
And, when I use mib2c.iterate.conf to generate my code. The
netsnmp_insert_table_row is generated automaticly. If this function is not
compatible to mib2c.iterate.conf, why it can be generated?
Thank you very much!

Sincerely
Peter

On 9/5/06, Dave Shield <D.T.Shield@csc.liv.ac.uk> wrote:
>
> On 05/09/06, Zhang Chuan <chuanzhang@gmail.com> wrote:
> > I think the row can not be avaliable immediately after
> > netsnmp_table_data_add_row(), but can be avaliable immediately after
> > netsnmp_insert_table_row(). Am I right?
>
> That's too simplistic a description.
> Please see my explanation from yesterday.
>
> > 1.Why I can not get the table_entry just after
> netsnmp_insert_table_row() in
> > MODE_SET_RESERVE2? I can only get NULL.
>
> <Ping>
> I've just clicked what the problem is.
> You're using the table_iterator helper (and
> 'netsnmp_extract_iterator_context' gives the row to work with). But
> you're not using the matching 'netsnmp_insert_iterator_context' call.
>
> netsnmp_insert_table_row belongs to a completely different helper, so
> it's not surprising that the iterator doesn't know about it.
>
> You can't mix different table helpers. If you're using the iterator
> helper, then use the API calls that belong to it - don't start
> throwing in calls from a different helper.
>
>
> > 2.Why I can not remove a table row when I send a remove command by
> AdventNet
> > Mib browser?
>
> No idea - what does the AdventNet "remove command" actually send?
>
>
>
> > 3.Basicly, when the rowStatus is not createAndGo, eg. active(1), what
> should
> > the code do?
>
> No idea - what does an "active" vs "notInService" row mean in the
> context of this table?
> I checked the descriptions in the MIB file, and they were even less
> helpfuil than normal!
>
> > Actually, I have no idea about the rowStatus concept.
>
> I suggest you get hold a copy of "Understanding SNMP MIBs", and read
> the section on row creation in that.
>
> In the meantime, you're probably better off ignoring most of the
> RowStatus behaviour, and just work with 'createAndGo(4)' and
> 'destroy(6)' values. That's sufficient for basic operation, until you
> can teach yourself the full details.
>
> Dave
>

--
you jump, I jump,she jump 3

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<div>Thank you for your detail description!</div>
<div>For the first question, I have tried netsnmp_insert_iterator_context. But unfortunately, it doesn't work yet ----- I get NULL.</div>
<div>The related codes is list:</div>
<div> </div>
<div>   printf("\npeter--notePCTable_createEntry ----------begin\n");<br>   table_row = notePCTable_createEntry(table_info->indexes->val.string, *NumberTemp, UserTemp, *StatusTemp);<br>   printf("\n peter--notePCTable_createEntry ----------end\n");
<br>   if (table_row)<br>   {<br>     /*printf("\npeter--netsnmp_insert_table_row ----------begin\n");<br>     & nbsp;    netsnmp_insert_table_row(request, table_row); //Here I insert a row to table. But why I get a NULL in the following code?
<br>    printf("\npeter--netsnmp_insert_table_row ----------end\n");<br>    */<br>    printf("\npeter--netsnmp_insert_iterator_context 111 ----------begin\n");<br>     & nbsp;    netsnmp_insert_iterator_context (request, (void *)table_row); //Here I insert a row to table. But why I get a NULL in the following code?
<br>    printf("\npeter--netsnmp_insert_iterator_context  ----------end\n");<br>    <br>&nbsp ;   table_entry = (struct notePCTable_entry *) netsnmp_extract_iterator_context(request);<br>&nbs p;       if (!table_entry)<br>     &n bsp;    {
<br>       &nbs p;            printf("\ntable_entry is NULL###########################################\n& quot;);<br>      &nb sp;    }   <br>    else<br>  &n bsp; {<br>     print f("\n#######################table_entry is not NULL###############################\n");
<br>    }<br>  &nbsp ;}<br>   else<br>    {<br>        netsnmp_set_request_error(reqinf o, request, SNMP_ERR_RESOURCEUNAVAILABLE);<br>  &nbs p;     return SNMP_ERR_NOERROR;<br>    &nbsp ;    }</div>
<div> </div>
<div>I wonder if there are some other things that I should do? </div>
<div>And, when I use mib2c.iterate.conf to generate my code. The netsnmp_insert_table_row is generated automaticly. If this function is not compatible to mib2c.iterate.conf, why it can be generated?</div>
<div>Thank you very much!</div>
<div> </div>
<div>Sincerely</div>
<div>Peter</div>
<div> </div>
<div> </div>
<div><br><br> </div>
<div><span class="gmail_quote">On 9/5/06, <b class="gmail_sendername">Dave Shield</b> <<a href="mailto:D.T.Shield@csc.liv.ac.uk">D.T.Shield@ csc.liv.ac.uk</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">On 05/09/06, Zhang Chuan <<a href="mailto:chuanzhang@gmail.com">chuanzhang@gmai l.com</a>> wrote:<br>
> I think the row can not be avaliable immediately after<br>> netsnmp_table_data_add_row(), but can be avaliable immediately after<br>> netsnmp_insert_table_row(). Am I right?<br><br>That's too simplistic a description.
<br>Please see my explanation from yesterday.<br><br>> 1.Why I can not get the table_entry just after netsnmp_insert_table_row() in<br>> MODE_SET_RESERVE2? I can only get NULL.<br><br><Ping><br>I've just clicked what the problem is.
<br>You're using the table_iterator helper (and<br>'netsnmp_extract_iterator_context' gives the row to work with).   But<br>you're not using the matching 'netsnmp_insert_iterator_context' call.<br><br>netsnmp_insert_table_row belongs to a completely different helper, so
<br>it's not surprising that the iterator doesn't know about it.<br><br>You can't mix different table helpers.  If you're using the iterator<br>helper, then use the API calls that belong to it - don't start<br>throwing in calls from a different helper.
<br><br><br>> 2.Why I can not remove a table row when I send a remove command by AdventNet<br>> Mib browser?<br><br>No idea - what does the AdventNet "remove command" actually send?<br><br><br><br>> 3.Basicly
, when the rowStatus is not createAndGo, eg. active(1), what should<br>> the code do?<br><br>No idea - what does an "active" vs "notInService" row mean in the<br>context of this table?<br>I checked the descriptions in the MIB file, and they were even less
<br>helpfuil than normal!<br><br>>   Actually, I have no idea about the rowStatus concept.<br><br>I suggest you get hold a copy of "Understanding SNMP MIBs", and read<br>the section on row creation in that.<br>
<br>In the meantime, you're probably better off ignoring most of the<br>RowStatus behaviour, and just work with 'createAndGo(4)' and<br>'destroy(6)' values.  That's sufficient for basic operation, until you<br>can teach yourself the full details.
<br><br>Dave<br></blockquote></div><br><br clear="all"><br>-- <br>you jump, I jump,she jump 3

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