imap: require ".$UID_MIN-$UID_END" suffix

Finish up the IMAP-only portion of iterative config reloading,
which allows us to create all sub-ranges of an inbox up front.
The InboxIdler still uses ->each_inbox which will struggle with
100K inboxes.

Having messages in the top-level newsgroup name of an inbox will
still waste bandwidth for clients which want to do full syncs
once there's a rollover to a new 50K range.  So instead, make
every inbox accessible exclusively via 50K slices in the form of
"$NEWSGROUP.$UID_MIN-$UID_END".

This introduces the DummyInbox, which makes $NEWSGROUP
and every parent component a selectable, empty inbox.
This aids navigation with mutt and possibly other MUAs.

Finally, the xt/perf-imap-list maintainer test is broken, now,
so remove it.  The grep perlfunc is already proven effective,
and we'll have separate tests for mocking out ~100k inboxes.

1 files changed, 0 insertions, 38 deletions

diff --git a/xt/perf-imap-list.t b/xt/perf-imap-list.t
deleted file mode 100644
index 0f00f487..00000000
--- a/xt/perf-imap-list.t
+++ /dev/null
@@ -1,38 +0,0 @@
-#!perl -w
-# Copyright (C) 2020 all contributors <meta@public-inbox.org>
-# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
-use Test::More;
-use_ok 'PublicInbox::IMAP';
-use_ok 'PublicInbox::IMAPD';
-use PublicInbox::DS;
-use Benchmark qw(:all);
-my @n = map { { newsgroup => "inbox.comp.foo.bar.$_" } } (0..50000);
-push @n, map { { newsgroup => "xobni.womp.foo.bar.$_" } } (0..50000);
-my $self = { imapd => { grouplist => \@n } };
-my $n = scalar @n;
-my $t = timeit(1, sub {
-        PublicInbox::IMAPD::refresh_inboxlist($self->{imapd});
-});
-diag timestr($t). "refresh $n inboxes";
-
-open my $null, '>', '/dev/null' or BAIL_OUT "open: $!";
-my $ds = { sock => $null };
-my $nr = 200;
-diag "starting benchmark...";
-my $cmd_list = \&PublicInbox::IMAP::cmd_list;
-$t = timeit(1, sub {
-        for (0..$nr) {
-                my $res = $cmd_list->($self, 'tag', '', '*');
-                PublicInbox::DS::write($ds, $res);
-        }
-});
-diag timestr($t). "list all for $n inboxes $nr times";
-$nr = 20;
-$t = timeit(1, sub {
-        for (0..$nr) {
-                my $res = $cmd_list->($self, 'tag', 'inbox.', '%');
-                PublicInbox::DS::write($ds, $res);
-        }
-});
-diag timestr($t). "list partial for $n inboxes $nr times";
-done_testing;