move nbtstat and nbtwalk to worker plugins

lib/App/Netdisco/Worker/Plugin/Nbtwalk.pm

@@ -0,0 +1,31 @@
+package App::Netdisco::Worker::Plugin::Nbtwalk;
+
+use Dancer ':syntax';
+use App::Netdisco::Worker::Plugin;
+use aliased 'App::Netdisco::Worker::Status';
+
+use App::Netdisco::JobQueue qw/jq_queued jq_insert/;
+use Dancer::Plugin::DBIC 'schema';
+
+register_worker({ primary => true }, sub {
+  my ($job, $workerconf) = @_;
+
+  my %queued = map {$_ => 1} jq_queued('nbtstat');
+  my @devices = schema('netdisco')->resultset('Device')->search({
+    -or => [ 'vendor' => undef, 'vendor' => { '!=' => 'netdisco' }],
+  })->has_layer('2')->get_column('ip')->all;
+  my @filtered_devices = grep {!exists $queued{$_}} @devices;
+
+  jq_insert([
+    map {{
+      device => $_,
+      action => 'nbtstat',
+      username => $job->username,
+      userip => $job->userip,
+    }} (@filtered_devices)
+  ]);
+
+  return Status->done('Queued nbtstat job for all devices');
+});
+
+true;