nntp: NEWGROUPS uses long_response

We can amortize the cost of NEWGROUPS time filtering using the
long_response API.  This lets us handle hundreds/thousands of
inboxes without monopolizing the event loop for this command.

Further speedup is possible using MiscSearch, but that requires
not-yet-done indexing changes to MiscIdx.

1 files changed, 1 insertions, 4 deletions

diff --git a/lib/PublicInbox/NNTPD.pm b/lib/PublicInbox/NNTPD.pm
index 4de1944b..33bc5fda 100644
--- a/lib/PublicInbox/NNTPD.pm
+++ b/lib/PublicInbox/NNTPD.pm
@@ -24,7 +24,6 @@ sub new {
                 groups => {},
                 err => \*STDERR,
                 out => \*STDOUT,
-                grouplist => [],
                 pi_config => $pi_config,
                 servername => $name,
                 greet => \"201 $name ready - post via email\r\n",
@@ -60,9 +59,7 @@ sub refresh_groups {
                         delete $groups->{$ngname};
                 }
         });
-        my @names = sort(keys %$groups);
-        $self->{grouplist} = [ map { $groups->{$_} } @names ];
-        $self->{groupnames} = \@names;
+        $self->{groupnames} = [ sort(keys %$groups) ];
         $self->{pi_config} = $pi_config;
         # this will destroy old groups that got deleted
         $self->{groups} = $groups;