in reply to Re: Trouble getting data out of a hash
in thread Trouble getting data out of a hash

Using Data::Dumper gives me the following:

value is HASH(0xe8a5b0)

Pairname is: PD110

$VAR1 = {};

It looks like there might be a problem with the stored hash. Any suggestions?

-Bill
  • Comment on Re^2: Trouble getting data out of a hash

Replies are listed 'Best First'.
Re^3: Trouble getting data out of a hash
by holli (Abbot) on Oct 26, 2007 at 13:50 UTC
    First of all, the returned hash is empty so it's no wonder that you the uninitialzed warning. I've never used Net::SNMP but from a quick glance at the docs I see: 
    $result = $session->get_request(
                          [-callback        => sub {},]     # non-bloc
+king
                          [-delay           => $seconds,]   # non-bloc
+king 
                          [-contextengineid => $engine_id,] # v3 
                          [-contextname     => $name,]      # v3
                          -varbindlist      => \@oids,
                       );

    [download]
    so I think you're call of request is wrong and should read 
    $result = $session->get_request( -varbindlist => [$OID] );

    [download]


    holli, /regexed monk/
[reply]
[d/l]
[select]
      Doing it that way got me an undefined data dump from result, and an error for uninitialized value when trying to print $result directly. Ithink there is something wrong with the hash reference being returned in $value, I'm just not sure how to fix it.

      Edit: I was right about the hash being incorrect, it seems I was grabbing the incorrect Object ID from the MIB. It needed as trailing 0 off of the the syscurrentDate object I was trying to take. Thanks for all your help in figuring this out.

      -Bill
[reply]

In Section Seekers of Perl Wisdom