search: async_mset: pass resource errors to callback

We need to be able to handle resource limitation errors in
public-facing daemons.

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/PublicInbox/Search.pm b/lib/PublicInbox/Search.pm
index 60d12dbf..b7732ae5 100644
--- a/lib/PublicInbox/Search.pm
+++ b/lib/PublicInbox/Search.pm
@@ -469,8 +469,12 @@ sub async_mset {
         if ($XHC) { # unconditionally retrieving pct + rank for now
                 xdb($self); # populate {nshards}
                 my @margs = ($self->xh_args, xh_opt($opt));
-                my $rd = $XHC->mkreq(undef, 'mset', @margs, $qry_str);
-                PublicInbox::XhcMset->maybe_new($rd, $self, $cb, @args);
+                my $ret = eval {
+                        my $rd = $XHC->mkreq(undef, 'mset', @margs, $qry_str);
+                        PublicInbox::XhcMset->maybe_new($rd, $self, $cb, @args);
+                };
+                $cb->(@args, undef, $@) if $@;
+                $ret;
         } else { # synchronous
                 my $mset = $self->mset($qry_str, $opt);
                 $cb->(@args, $mset);