package App::Netdisco::Worker::Plugin::Discover::CanonicalIP;
use Dancer ':syntax';
use App::Netdisco::Worker::Plugin;
use aliased 'App::Netdisco::Worker::Status';
use App::Netdisco::Transport::SNMP ();
use App::Netdisco::Util::Permission 'check_acl_only';
use App::Netdisco::Util::DNS 'ipv4_from_hostname';
use Dancer::Plugin::DBIC 'schema';
register_worker({ phase => 'main', driver => 'snmp' }, sub {
my ($job, $workerconf) = @_;
my $device = $job->device;
return unless $device->in_storage;
my $snmp = App::Netdisco::Transport::SNMP->reader_for($device)
or return Status->defer("discover failed: could not SNMP connect to $device");
my $old_ip = $device->ip;
my $new_ip = $old_ip;
my $revofname = ipv4_from_hostname($snmp->name);
if (setting('reverse_sysname') and $revofname) {
if (App::Netdisco::Transport::SNMP->test_connection( $new_ip )) {
$new_ip = $revofname;
}
else {
debug sprintf ' [%s] device - cannot renumber to %s - SNMP connect failed',
$old_ip, $revofname;
}
}
if (scalar @{ setting('device_identity') }) {
my @idmaps = @{ setting('device_identity') };
my $devips = $device->device_ips->order_by('alias');
ALIAS: while (my $alias = $devips->next) {
next if $alias->alias eq $old_ip;
foreach my $map (@idmaps) {
next unless ref {} eq ref $map;
foreach my $key (sort keys %$map) {
# lhs matches device, rhs matches device_ip
if (check_acl_only($device, $key)
and check_acl_only($alias, $map->{$key})) {
if (App::Netdisco::Transport::SNMP->test_connection( $alias->alias )) {
$new_ip = $alias->alias;
last ALIAS;
}
else {
debug sprintf ' [%s] device - cannot renumber to %s - SNMP connect failed',
$old_ip, $alias->alias;
}
}
}
}
} # ALIAS
}
return if $new_ip eq $old_ip;
schema('netdisco')->txn_do(sub {
# delete target device with the same vendor and serial number
schema('netdisco')->resultset('Device')->search({
ip => $new_ip, vendor => $device->vendor, serial => $device->serial,
})->delete;
# if target device exists then this will die
$device->renumber($new_ip)
or die "cannot renumber to: $new_ip"; # rollback
# is not done in renumber but required otherwise confusing at job end!
schema('netdisco')->resultset('Admin')
->find({job => $job->id})->update({device => $new_ip});
return Status->info(sprintf ' [%s] device - changed IP to %s (%s)',
$old_ip, $device->ip, ($device->dns || ''));
});
});
true;