130 lines
3.7 KiB
Perl
130 lines
3.7 KiB
Perl
package App::Netdisco::Worker::Plugin::Arpnip::Nodes;
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use Dancer ':syntax';
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use Dancer::Plugin::DBIC 'schema';
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use App::Netdisco::Worker::Plugin;
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use aliased 'App::Netdisco::Worker::Status';
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use App::Netdisco::Transport::SSH ();
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use App::Netdisco::Transport::SNMP ();
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use App::Netdisco::Util::Node qw/check_mac store_arp/;
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use App::Netdisco::Util::FastResolver 'hostnames_resolve_async';
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use NetAddr::IP::Lite ':lower';
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use Time::HiRes 'gettimeofday';
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register_worker({ phase => 'store' }, sub {
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my ($job, $workerconf) = @_;
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my $device = $job->device;
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# would be possible just to use now() on updated records, but by using this
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# same value for them all, we _can_ if we want add a job at the end to
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# select and do something with the updated set (no reason to yet, though)
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my $now = 'to_timestamp('. (join '.', gettimeofday) .')';
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# update node_ip with ARP and Neighbor Cache entries
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store_arp(\%$_, $now) for @{ vars->{'v4arps'} };
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debug sprintf ' [%s] arpnip - processed %s ARP Cache entries',
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$device->ip, scalar @{ vars->{'v4arps'} };
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store_arp(\%$_, $now) for @{ vars->{'v6arps'} };
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debug sprintf ' [%s] arpnip - processed %s IPv6 Neighbor Cache entries',
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$device->ip, scalar @{ vars->{'v6arps'} };
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$device->update({
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last_arpnip => \$now,
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layers => \[q{overlay(layers placing '1' from 6 for 1)}],
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});
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my $status = $job->best_status;
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return Status->$status("Ended arpnip for $device");
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});
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register_worker({ phase => 'main', driver => 'snmp' }, sub {
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my ($job, $workerconf) = @_;
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my $device = $job->device;
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my $snmp = App::Netdisco::Transport::SNMP->reader_for($device)
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or return Status->defer("arpnip failed: could not SNMP connect to $device");
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# cache v4 arp table
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push @{ vars->{'v4arps'} },
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@{ get_arps_snmp($device, $snmp->at_paddr, $snmp->at_netaddr) };
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# cache v6 neighbor cache
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push @{ vars->{'v6arps'} },
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@{get_arps_snmp($device, $snmp->ipv6_n2p_mac, $snmp->ipv6_n2p_addr) };
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return Status->done("Gathered arp caches from $device");
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});
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# get an arp table (v4 or v6)
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sub get_arps_snmp {
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my ($device, $paddr, $netaddr) = @_;
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my @arps = ();
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while (my ($arp, $node) = each %$paddr) {
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my $ip = $netaddr->{$arp};
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next unless defined $ip;
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next unless check_mac($node, $device);
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push @arps, {
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node => $node,
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ip => $ip,
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dns => undef,
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};
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}
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debug sprintf ' resolving %d ARP entries with max %d outstanding requests',
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scalar @arps, $ENV{'PERL_ANYEVENT_MAX_OUTSTANDING_DNS'};
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my $resolved_ips = hostnames_resolve_async(\@arps);
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return $resolved_ips;
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}
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register_worker({ phase => 'main', driver => 'cli' }, sub {
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my ($job, $workerconf) = @_;
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my $device = $job->device;
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my $cli = App::Netdisco::Transport::SSH->session_for($device)
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or return Status->defer("arpnip failed: could not SSH connect to $device");
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# should be both v4 and v6
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my @arps = @{ get_arps_cli($device, [$cli->arpnip]) };
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# cache v4 arp table
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push @{ vars->{'v4arps'} },
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grep { NetAddr::IP::Lite->new($_->{ip})->bits == 32 } @arps;
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# cache v6 neighbor cache
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push @{ vars->{'v6arps'} },
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grep { NetAddr::IP::Lite->new($_->{ip})->bits == 128 } @arps;
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return Status->done("Gathered arp caches from $device");
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});
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sub get_arps_cli {
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my ($device, $entries) = @_;
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my @arps = ();
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$entries ||= [];
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foreach my $entry (@$entries) {
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next unless check_mac($entry->{mac}, $device);
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push @arps, {
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node => $entry->{mac},
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ip => $entry->{ip},
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dns => $entry->{dns},
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};
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}
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debug sprintf ' resolving %d ARP entries with max %d outstanding requests',
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scalar @arps, $ENV{'PERL_ANYEVENT_MAX_OUTSTANDING_DNS'};
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my $resolved_ips = hostnames_resolve_async(\@arps);
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return $resolved_ips;
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}
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true;
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