1 # Copyright (C) 2021 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # All Locals Ever: track lei/store + externals ever used as
5 # long as they're on an accessible FS. Includes "lei q" --include
6 # and --only targets that haven't been through "lei add-external".
7 # Typically: ~/.cache/lei/all_locals_ever.git
8 package PublicInbox::LeiALE;
11 use parent qw(PublicInbox::LeiSearch PublicInbox::Lock);
13 use PublicInbox::Import;
14 use Fcntl qw(SEEK_SET);
18 PublicInbox::Import::init_bare($d, 'ale');
20 git => PublicInbox::Git->new($d),
21 lock_path => "$d/lei_ale.state", # dual-duty lock + state
22 ibxish => [], # Inbox and ExtSearch (and LeiSearch) objects
26 sub over {} # undef for xoids_for
28 sub overs_all { # for xoids_for (called only in lei workers?)
31 if (($self->{owner_pid} // $pid) != $pid) {
32 delete($_->{over}) for @{$self->{ibxish}};
34 $self->{owner_pid} = $pid;
35 grep(defined, map { $_->over } @{$self->{ibxish}});
38 sub refresh_externals {
39 my ($self, $lxs) = @_;
41 my $lk = $self->lock_for_scope;
42 my $cur_lxs = ref($lxs)->new;
45 readline($self->{lockfh}) //
46 die "readline($self->{lock_path}): $!";
51 my %seen_ibxish; # $dir => any-defined value
52 for my $dir (split(/\n/, $orig)) {
53 if (-d $dir && -r _ && $cur_lxs->prepare_external($dir)) {
54 $seen_ibxish{$dir} //= length($old .= "$dir\n");
59 my @ibxish = $cur_lxs->locals;
60 for my $x ($lxs->locals) {
61 my $d = File::Spec->canonpath($x->{inboxdir} // $x->{topdir});
62 $seen_ibxish{$d} //= do {
67 if ($new ne '' || $gone) {
68 $self->{lockfh}->autoflush(1);
70 seek($self->{lockfh}, 0, SEEK_SET) or die "seek: $!";
71 truncate($self->{lockfh}, 0) or die "truncate: $!";
75 print { $self->{lockfh} } $old, $new or die "print: $!";
78 my $f = $self->git->{git_dir}.'/objects/info/alternates';
79 if (open my $fh, '<', $f) {
81 $old = <$fh> // die "readline($f): $!";
84 $new .= File::Spec->canonpath($x->git->{git_dir})."/objects\n";
86 $self->{ibxish} = \@ibxish;
87 return if $old eq $new;
89 # this needs to be atomic since child processes may start
90 # git-cat-file at any time
91 my $tmp = "$f.$$.tmp";
92 open my $fh, '>', $tmp or die "open($tmp): $!";
93 print $fh $new or die "print($tmp): $!";
94 close $fh or die "close($tmp): $!";
95 rename($tmp, $f) or die "rename($tmp, $f): $!";