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#320 improve duplicate interfaces() fixup

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1. sorts the interfaces as they are processed to make A/B testing easier
2. adds the interface index to the original when a duplicate is seen
3. there may be other de-duplication code in vendor modules, untouched
This commit is contained in:
Oliver Gorwits
2019-04-20 09:07:14 +01:00
parent ad8762a7c4
commit ea9ad92cc4
4 changed files with 66 additions and 6 deletions
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10
lib/SNMP/Info/Layer2.pm
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@@ -145,15 +145,21 @@ sub interfaces {
# Replace the Index with the ifDescr field.
# Check for duplicates in ifDescr, if so uniquely identify by adding
# ifIndex to repeated values
my %seen;
foreach my $iid ( keys %$i_descr ) {
my (%seen, %first_seen_as);
foreach my $iid ( sort keys %$i_descr ) {
my $port = $i_descr->{$iid};
next unless defined $port;
if ( $seen{$port}++ ) {
# (#320) also fixup the port this is a duplicate of
$interfaces->{ $first_seen_as{$port} }
= sprintf( "%s (%d)", $port, $first_seen_as{$port} );
$interfaces->{$iid} = sprintf( "%s (%d)", $port, $iid );
}
else {
$interfaces->{$iid} = $port;
$first_seen_as{$port} = $iid;
}
}
return $interfaces;