[PATCH 3/3] lei forget-mail-sync: rely on lei/store process

[Eric Wong <e@80x24.org>]

As implied in commit 6ff03ba2be9247f1
("lei export-kw: do not write directly to mail_sync.sqlite3"),
modifying mail_sync.sqlite3 directly can lead to conflicts
and making everything go through lei/store is easier.
---
 lib/PublicInbox/LeiForgetMailSync.pm | 8 ++++----
 lib/PublicInbox/LeiStore.pm          | 6 ++++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/lib/PublicInbox/LeiForgetMailSync.pm b/lib/PublicInbox/LeiForgetMailSync.pm
index c74ba25d..940ca1b6 100644
--- a/lib/PublicInbox/LeiForgetMailSync.pm
+++ b/lib/PublicInbox/LeiForgetMailSync.pm
@@ -15,13 +15,13 @@ use PublicInbox::LeiExportKw;
 sub lei_forget_mail_sync {
 	my ($lei, @folders) = @_;
 	my $lms = $lei->lms or return;
+	my $sto = $lei->_lei_store or return; # may disappear due to race
+	$sto->write_prepare;
 	my $err = $lms->arg2folder($lei, \@folders);
 	$lei->qerr(@{$err->{qerr}}) if $err->{qerr};
 	return $lei->fail($err->{fail}) if $err->{fail};
-	delete $lms->{dbh};
-	$lms->lms_begin;
-	$lms->forget_folder($_) for @folders;
-	$lms->lms_commit;
+	$sto->ipc_do('lms_forget_folders', @folders);
+	my $wait = $sto->ipc_do('done');
 }
 
 *_complete_forget_mail_sync = \&PublicInbox::LeiExportKw::_complete_export_kw;
diff --git a/lib/PublicInbox/LeiStore.pm b/lib/PublicInbox/LeiStore.pm
index 3f33d114..e8334187 100644
--- a/lib/PublicInbox/LeiStore.pm
+++ b/lib/PublicInbox/LeiStore.pm
@@ -216,6 +216,12 @@ sub lms_mv_src {
 	_lms_rw($self)->mv_src($folder, $oidbin, $id, $newbn);
 }
 
+sub lms_forget_folders {
+	my ($self, @folders) = @_;
+	my $lms = _lms_rw($self);
+	for my $f (@folders) { $lms->forget_folder($f) }
+}
+
 sub set_sync_info {
 	my ($self, $oidhex, $folder, $id) = @_;
 	_lms_rw($self)->set_src($oidhex, $folder, $id);