create poller worker and add poller type stubs

Netdisco/lib/App/Netdisco/Daemon/Queue.pm

@@ -33,11 +33,13 @@ sub capacity_for {
   debug "checking local capacity for action $action";
 
   my $action_map = {
-    Interactive => [qw/location contact portcontrol portname vlan power/]
+    Poller => [qw//],
+    Interactive => [qw/location contact portcontrol portname vlan power/],
   };
 
   my $role_map = {
-    map {$_ => 'Interactive'} @{ $action_map->{Interactive} }
+    (map {$_ => 'Poller'} @{ $action_map->{Poller} }),
+    (map {$_ => 'Interactive'} @{ $action_map->{Interactive} })
   };
 
   my $setting_map = {

Netdisco/lib/App/Netdisco/Daemon/Worker/Manager.pm

@@ -13,8 +13,10 @@ use namespace::clean;
 my $fqdn = hostfqdn || 'localhost';
 
 my $role_map = {
-  map {$_ => 'Interactive'}
-      qw/location contact portcontrol portname vlan power/
+  (map {$_ => 'Poller'}
+      qw//),
+  (map {$_ => 'Interactive'}
+      qw/location contact portcontrol portname vlan power/)
 };
 
 sub worker_begin {

Netdisco/lib/App/Netdisco/Daemon/Worker/Poller.pm

@@ -0,0 +1,73 @@
+package App::Netdisco::Daemon::Worker::Poller;
+
+use Dancer qw/:moose :syntax :script/;
+use Dancer::Plugin::DBIC 'schema';
+use Try::Tiny;
+
+use Role::Tiny;
+use namespace::clean;
+
+# add dispatch methods for poller tasks
+with 'App::Netdisco::Daemon::Worker::Poller::Discover';
+
+sub worker_body {
+  my $self = shift;
+  my $wid = $self->wid;
+
+  while (1) {
+      debug "poll ($wid): asking for a job";
+      my $jobs = $self->do('take_jobs', $self->wid, 'Poller');
+
+      foreach my $candidate (@$jobs) {
+          # create a row object so we can use column accessors
+          # use the local db schema in case it is accidentally 'stored'
+          # (will throw an exception)
+          my $job = schema('daemon')->resultset('Admin')
+                      ->new_result($candidate);
+          my $jid = $job->job;
+
+          my $target = 'set_'. $job->action;
+          next unless $self->can($target);
+          debug "poll ($wid): can ${target}() for job $jid";
+
+          # do job
+          my ($status, $log);
+          try {
+              $job->started(scalar localtime);
+              info sprintf "poll (%s): starting job %s at %s", $wid, $jid, $job->started;
+              ($status, $log) = $self->$target($job);
+          }
+          catch {
+              $status = 'error';
+              $log = "error running job: $_";
+              $self->sendto('stderr', $log ."\n");
+          };
+
+          $self->close_job($job, $status, $log);
+      }
+
+      debug "poll ($wid): sleeping now...";
+      sleep( setting('daemon_sleep_time') || 5 );
+  }
+}
+
+sub close_job {
+  my ($self, $job, $status, $log) = @_;
+  my $now = scalar localtime;
+  info sprintf "poll (%s): wrapping up job %s - status %s at %s",
+    $self->wid, $job->job, $status, $now;
+
+  try {
+      schema('netdisco')->resultset('Admin')
+        ->find($job->job)
+        ->update({
+          status => $status,
+          log => $log,
+          started => $job->started,
+          finished => $now,
+        });
+  }
+  catch { $self->sendto('stderr', "error closing job: $_\n") };
+}
+
+1;