miscsearch: a new Xapian sub-DB for extindex

This will be used to index and search Inbox objects and perhaps
individual git repositories/epochs for grokmirror manifest.js.gz
generation.  There is no sharding planned for this at the moment
since inbox count should remain low (~100K to 1M) compared to
message count.

Folding this into the existing sharded DBs could be possible;
but would likely increase query and maintenance costs, as well
as development complexity.  So we'll use a few more inodes and
FDs at runtime, instead.

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/PublicInbox/ExtSearch.pm b/lib/PublicInbox/ExtSearch.pm
index eb665027..c41ae443 100644
--- a/lib/PublicInbox/ExtSearch.pm
+++ b/lib/PublicInbox/ExtSearch.pm
@@ -10,6 +10,7 @@ use v5.10.1;
 use PublicInbox::Over;
 use PublicInbox::Inbox;
 use File::Spec ();
+use PublicInbox::MiscSearch;
 
 # for ->reopen, ->mset, ->mset_to_artnums
 use parent qw(PublicInbox::Search);
@@ -24,6 +25,11 @@ sub new {
         }, __PACKAGE__;
 }
 
+sub misc {
+        my ($self) = @_;
+        $self->{misc} //= PublicInbox::MiscSearch->new("$self->{xpfx}/misc");
+}
+
 sub search { $_[0] } # self
 
 # overrides PublicInbox::Search::_xdb