[PATCH 02/10] lei: janky $PATH2CFG garbage collection

[Eric Wong]

We need to rely on this to keep our config cache (and lei_store
pipes) under control with tests each creating a new config and
directory.
---
 lib/PublicInbox/LEI.pm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index e5211764..d534f1d0 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -705,6 +705,12 @@ sub _lei_cfg ($;$) {
                        File::Spec->canonpath($cfg->{'leistore.dir'})) {
                $cfg->{-lei_store} = $sto;
        }
+       if (scalar(keys %PATH2CFG) > 5) {
+               # FIXME: use inotify/EVFILT_VNODE to detect unlinked configs
+               for my $k (keys %PATH2CFG) {
+                       delete($PATH2CFG{$k}) unless -f $k
+               }
+       }
        $self->{cfg} = $PATH2CFG{$f} = $cfg;
 }
 
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