[PATCH] public-inbox-watch: support reloading config with SIGHUP

[PATCH] public-inbox-watch: support reloading config with SIGHUP

[Eric Wong]

This can be useful for adding new lists, as restarting is
expensive (but still non-lossy).
---
 script/public-inbox-watch | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/script/public-inbox-watch b/script/public-inbox-watch
index 42ae55a..bb65592 100755
--- a/script/public-inbox-watch
+++ b/script/public-inbox-watch
@@ -5,10 +5,15 @@ use strict;
 use warnings;
 use PublicInbox::WatchMaildir;
 use PublicInbox::Config;
-my $config = PublicInbox::Config->new;
-my $watch_md = PublicInbox::WatchMaildir->new($config);
+my ($config, $watch_md);
+my $reload = sub {
+	$config = PublicInbox::Config->new;
+	$watch_md = PublicInbox::WatchMaildir->new($config);
+};
+$reload->();
 if ($watch_md) {
-	my $scan = sub { $watch_md->scan };
+	my $scan = sub { $watch_md->scan if $watch_md };
+	$SIG{HUP} = $reload;
 	$SIG{USR1} = $scan;
 	$SIG{ALRM} = sub { $SIG{ALRM} = 'DEFAULT'; $scan->() };
 	alarm(1);
-- 
EW