about summary refs log tree commit homepage
path: root/lib/PublicInbox/Inbox.pm
diff options
context:
space:
mode:
Diffstat (limited to 'lib/PublicInbox/Inbox.pm')
-rw-r--r--lib/PublicInbox/Inbox.pm230
1 files changed, 102 insertions, 128 deletions
diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index c0962af9..dd689221 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -1,75 +1,51 @@
-# Copyright (C) 2016-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 #
 # Represents a public-inbox (which may have multiple mailing addresses)
 package PublicInbox::Inbox;
 use strict;
+use v5.10.1;
 use PublicInbox::Git;
 use PublicInbox::MID qw(mid2path);
 use PublicInbox::Eml;
 use List::Util qw(max);
 use Carp qw(croak);
+use PublicInbox::Compat qw(uniqstr);
 
-# Long-running "git-cat-file --batch" processes won't notice
-# unlinked packs, so we need to restart those processes occasionally.
-# Xapian and SQLite file handles are mostly stable, but sometimes an
-# admin will attempt to replace them atomically after compact/vacuum
-# and we need to be prepared for that.
-my $cleanup_timer;
-my $CLEANUP = {}; # string(inbox) -> inbox
-
-sub git_cleanup ($) {
-        my ($self) = @_;
-        my $git = $self->{git} // return undef;
-        # normal inboxes have low startup cost and there may be many, so
-        # keep process+pipe counts in check.  ExtSearch may have high startup
-        # cost (e.g. ->ALL) and but likely one per-daemon, so cleanup only
-        # if there's unlinked files
-        my $live = $self->isa(__PACKAGE__) ? $git->cleanup
-                                        : $git->cleanup_if_unlinked;
-        delete($self->{git}) unless $live;
-        $live;
+# in case DBs get replaced (Xapcmd does it for v1)
+sub check_inodes ($) {
+        for (qw(over mm)) { $_[0]->{$_}->check_inodes if $_[0]->{$_} }
 }
 
-# returns true if further checking is required
-sub cleanup_shards { $_[0]->{search} ? $_[0]->{search}->cleanup_shards : undef }
-
-sub cleanup_task () {
-        $cleanup_timer = undef;
-        my $next = {};
-        for my $ibx (values %$CLEANUP) {
-                my $again = git_cleanup($ibx);
-                $ibx->cleanup_shards and $again = 1;
-                for my $git (@{$ibx->{-repo_objs}}) {
-                        $again = 1 if $git->cleanup;
-                }
-                check_inodes($ibx);
-                $next->{"$ibx"} = $ibx if $again;
-        }
-        $CLEANUP = $next;
-        $cleanup_timer //= PublicInbox::DS::later(\&cleanup_task);
+# search/over/mm hold onto FDs and description+cloneurl may get updated.
+# creating long-lived allocations in the same phase as short-lived
+# allocations also leads to fragmentation, so we don't want some stuff
+# living too long.
+sub do_cleanup {
+        my ($ibx) = @_;
+        my ($srch) = delete @$ibx{qw(search over mm description cloneurl)};
+        $srch //= $ibx; # extsearch
+        delete @$srch{qw(xdb qp)};
 }
 
 sub _cleanup_later ($) {
         # no need to require DS, here, if it were enabled another
         # module would've require'd it, already
-        if (eval { PublicInbox::DS::in_loop() }) {
-                $cleanup_timer //= PublicInbox::DS::later(\&cleanup_task);
-                $CLEANUP->{"$_[0]"} = $_[0]; # $self
-        }
+        eval { PublicInbox::DS::in_loop() } and
+                PublicInbox::DS::add_uniq_timer($_[0]+0, 30, \&do_cleanup, @_)
 }
 
 sub _set_limiter ($$$) {
         my ($self, $pi_cfg, $pfx) = @_;
         my $lkey = "-${pfx}_limiter";
-        $self->{$lkey} ||= do {
+        $self->{$lkey} //= do {
                 # full key is: publicinbox.$NAME.httpbackendmax
                 my $mkey = $pfx.'max';
                 my $val = $self->{$mkey} or return;
                 my $lim;
                 if ($val =~ /\A[0-9]+\z/) {
-                        require PublicInbox::Qspawn;
-                        $lim = PublicInbox::Qspawn::Limiter->new($val);
+                        require PublicInbox::Limiter;
+                        $lim = PublicInbox::Limiter->new($val);
                 } elsif ($val =~ /\A[a-z][a-z0-9]*\z/) {
                         $lim = $pi_cfg->limiter($val);
                         warn "$mkey limiter=$val not found\n" if !$lim;
@@ -94,12 +70,8 @@ sub new {
                 delete $opts->{feedmax};
         }
         # allow any combination of multi-line or comma-delimited hide entries
-        my $hide = {};
-        if (defined(my $h = $opts->{hide})) {
-                foreach my $v (@$h) {
-                        $hide->{$_} = 1 foreach (split(/\s*,\s*/, $v));
-                }
-                $opts->{-hide} = $hide;
+        for $v (@{delete($opts->{hide}) // []}) {
+                $opts->{-'hide_'.$_} = 1 for split(/\s*,\s*/, $v);
         }
         bless $opts, $class;
 }
@@ -129,7 +101,6 @@ sub git {
                 my $g = PublicInbox::Git->new($git_dir);
                 my $lim = $self->{-httpbackend_limiter};
                 $g->{-httpbackend_limiter} = $lim if $lim;
-                _cleanup_later($self);
                 $g;
         };
 }
@@ -140,7 +111,7 @@ sub max_git_epoch {
         my $cur = $self->{-max_git_epoch};
         my $changed;
         if (!defined($cur) || ($changed = git($self)->alternates_changed)) {
-                git_cleanup($self) if $changed;
+                $self->{git}->cleanup if $changed;
                 my $gits = "$self->{inboxdir}/git";
                 if (opendir my $dh, $gits) {
                         my $max = max(map {
@@ -152,27 +123,29 @@ sub max_git_epoch {
         $cur;
 }
 
+sub mm_file {
+        my ($self) = @_;
+        my $d = $self->{inboxdir};
+        ($self->version >= 2 ? $d : "$d/public-inbox").'/msgmap.sqlite3';
+}
+
 sub mm {
         my ($self, $req) = @_;
         $self->{mm} //= eval {
                 require PublicInbox::Msgmap;
-                my $dir = $self->{inboxdir};
-                if ($self->version >= 2) {
-                        PublicInbox::Msgmap->new_file("$dir/msgmap.sqlite3");
-                } else {
-                        PublicInbox::Msgmap->new($dir);
-                }
+                _cleanup_later($self);
+                PublicInbox::Msgmap->new_file($self);
         } // ($req ? croak("E: $@") : undef);
 }
 
 sub search {
         my ($self) = @_;
-        my $srch = $self->{search} //= eval {
+        $self->{search} // eval {
                 _cleanup_later($self);
                 require PublicInbox::Search;
-                PublicInbox::Search->new($self);
+                my $srch = PublicInbox::Search->new($self);
+                (eval { $srch->xdb }) ? ($self->{search} = $srch) : undef;
         };
-        (eval { $srch->xdb }) ? $srch : undef;
 }
 
 # isrch is preferred for read-only interfaces if available since it
@@ -181,47 +154,32 @@ sub isrch { $_[0]->{isrch} // search($_[0]) }
 
 sub over {
         my ($self, $req) = @_;
-        $self->{over} //= eval {
-                my $srch = $self->{search} //= do {
-                        _cleanup_later($self);
+        $self->{over} // eval {
+                my $srch = $self->{search} // do {
                         require PublicInbox::Search;
                         PublicInbox::Search->new($self);
                 };
+                _cleanup_later($self);
                 my $over = PublicInbox::Over->new("$srch->{xpfx}/over.sqlite3");
                 $over->dbh; # may fail
-                $over;
+                $self->{over} = $over;
         } // ($req ? croak("E: $@") : undef);
 }
 
-sub try_cat {
-        my ($path) = @_;
-        open(my $fh, '<', $path) or return '';
-        local $/;
-        <$fh> // '';
-}
-
-sub cat_desc ($) {
-        my $desc = try_cat($_[0]);
-        local $/ = "\n";
-        chomp $desc;
-        utf8::decode($desc);
-        $desc =~ s/\s+/ /smg;
-        $desc eq '' ? undef : $desc;
-}
-
 sub description {
         my ($self) = @_;
-        ($self->{description} //= cat_desc("$self->{inboxdir}/description")) //
+        ($self->{description} //=
+                PublicInbox::Git::cat_desc("$self->{inboxdir}/description")) //
                 '($INBOX_DIR/description missing)';
 }
 
 sub cloneurl {
         my ($self) = @_;
-        ($self->{cloneurl} //= do {
-                my $s = try_cat("$self->{inboxdir}/cloneurl");
-                my @urls = split(/\s+/s, $s);
-                scalar(@urls) ? \@urls : undef
-        }) // [];
+        $self->{cloneurl} // do {
+                my @urls = split(/\s+/s,
+                        PublicInbox::IO::try_cat "$self->{inboxdir}/cloneurl");
+                scalar(@urls) ? ($self->{cloneurl} = \@urls) : undef;
+        } // [];
 }
 
 sub base_url {
@@ -232,20 +190,20 @@ sub base_url {
                 $url .= '/' if $url !~ m!/\z!;
                 return $url .= $self->{name} . '/';
         }
-        # called from a non-PSGI environment (e.g. NNTP/POP3):
-        $self->{-base_url} ||= do {
-                my $url = $self->{url} // return undef;
-                $url = $url->[0] // return undef;
-                # expand protocol-relative URLs to HTTPS if we're
-                # not inside a web server
-                $url = "https:$url" if $url =~ m!\A//!;
-                $url .= '/' if $url !~ m!/\z!;
-                $url;
-        };
-}
-
+        # called from a non-PSGI environment or cross-inbox environment
+        # where multiple inboxes can have different domains
+        my $url = $self->{url} // return undef;
+        $url = $url->[0] // return undef;
+        # expand protocol-relative URLs to HTTPS if we're
+        # not inside a web server
+        substr($url, 0, 0, 'https:') if substr($url, 0, 2) eq '//';
+        $url .= '/' if substr($url, -1, 1) ne '/';
+        $url;
+}
+
+# imapserver, nntpserver configs are used here:
 sub _x_url ($$$) {
-        my ($self, $x, $ctx) = @_; # $x is "nntp" or "imap"
+        my ($self, $x, $ctx) = @_; # $x is "imap" or "nntp"
         # no checking for nntp_usable here, we can point entirely
         # to non-local servers or users run by a different user
         my $ns = $self->{"${x}server"} //
@@ -267,7 +225,7 @@ sub _x_url ($$$) {
                                 if ($group) {
                                         $u .= '/' if $u !~ m!/\z!;
                                         $u .= $group;
-                                } else { # n.b. IMAP uses "newsgroup"
+                                } else { # n.b. IMAP and POP3 use "newsgroup"
                                         warn <<EOM;
 publicinbox.$self->{name}.${x}mirror=$_ missing newsgroup name
 EOM
@@ -277,23 +235,41 @@ EOM
                         # nntp://news.example.com/alt.example
                         push @m, $u;
                 }
-
-                # List::Util::uniq requires Perl 5.26+, maybe we
-                # can use it by 2030 or so
-                my %seen;
-                @urls = grep { !$seen{$_}++ } (@urls, @m);
+                @urls = uniqstr @urls, @m;
         }
         \@urls;
 }
 
 # my ($self, $ctx) = @_;
-sub nntp_url { $_[0]->{-nntp_url} //= _x_url($_[0], 'nntp', $_[1]) }
 sub imap_url { $_[0]->{-imap_url} //= _x_url($_[0], 'imap', $_[1]) }
+sub nntp_url { $_[0]->{-nntp_url} //= _x_url($_[0], 'nntp', $_[1]) }
+
+sub pop3_url {
+        my ($self, $ctx) = @_;
+        $self->{-pop3_url} //= do {
+                my $ps = $self->{'pop3server'} //
+                       $ctx->{www}->{pi_cfg}->get_all('publicinbox.pop3server');
+                my $group = $self->{newsgroup};
+                my @urls;
+                ($ps && $group) and
+                        @urls = map { m!\Apop3?s?://! ? $_ : "pop3://$_" } @$ps;
+                if (my $mi = $self->{'pop3mirror'}) {
+                        my @m = map { m!\Apop3?s?://! ? $_ : "pop3://$_" } @$mi;
+                        @urls = uniqstr @urls, @m;
+                }
+                my $n = 0;
+                for (@urls) { $n += s!/+\z!! }
+                warn <<EOM if $n;
+W: pop3server and/or pop3mirror URLs should not end with trailing slash `/'
+EOM
+                \@urls;
+        }
+}
 
 sub nntp_usable {
         my ($self) = @_;
         my $ret = mm($self) && over($self);
-        $self->{mm} = $self->{over} = $self->{search} = undef;
+        delete @$self{qw(mm over search)};
         $ret;
 }
 
@@ -308,17 +284,15 @@ sub msg_by_smsg ($$) {
 
         # ghosts may have undef smsg (from SearchThread.node) or
         # no {blob} field
-        return unless defined $smsg;
-        defined(my $blob = $smsg->{blob}) or return;
-
-        $self->git->cat_file($blob);
+        $smsg // return;
+        $self->git->cat_file($smsg->{blob} // return);
 }
 
 sub smsg_eml {
         my ($self, $smsg) = @_;
         my $bref = msg_by_smsg($self, $smsg) or return;
         my $eml = PublicInbox::Eml->new($bref);
-        $smsg->populate($eml) unless exists($smsg->{num}); # v1 w/o SQLite
+        $smsg->{num} // $smsg->populate($eml);
         $eml;
 }
 
@@ -328,7 +302,7 @@ sub smsg_by_mid ($$) {
         my $smsg;
         if (my $mm = $self->mm) {
                 # favor the Message-ID we used for the NNTP article number:
-                defined(my $num = $mm->num_for($mid)) or return;
+                my $num = $mm->num_for($mid) // return;
                 $smsg = $over->get_art($num);
         } else {
                 my ($id, $prev);
@@ -343,11 +317,6 @@ sub msg_by_mid ($$) {
         $smsg ? msg_by_smsg($self, $smsg) : msg_by_path($self, mid2path($mid));
 }
 
-sub recent {
-        my ($self, $opts, $after, $before) = @_;
-        $self->over->recent($opts, $after, $before);
-}
-
 sub modified {
         my ($self) = @_;
         if (my $over = $self->over) {
@@ -364,7 +333,7 @@ sub modified {
 # (pathname is NOT public, but prefix is used for Xapian queries)
 sub altid_map ($) {
         my ($self) = @_;
-        $self->{-altid_map} //= eval {
+        eval {
                 require PublicInbox::AltId;
                 my $altid = $self->{altid} or return {};
                 my %h = map {;
@@ -386,17 +355,10 @@ sub unsubscribe_unlock {
         delete $self->{unlock_subs}->{$ident};
 }
 
-sub check_inodes ($) {
-        my ($self) = @_;
-        for (qw(over mm)) { # TODO: search
-                $self->{$_}->check_inodes if $self->{$_};
-        }
-}
-
 # called by inotify
 sub on_unlock {
         my ($self) = @_;
-        check_inodes($self);
+        check_inodes($self); # DB files may be replaced while holding lock
         my $subs = $self->{unlock_subs} or return;
         for my $obj (values %$subs) {
                 eval { $obj->on_inbox_unlock($self) };
@@ -408,6 +370,16 @@ sub uidvalidity { $_[0]->{uidvalidity} //= eval { $_[0]->mm->created_at } }
 
 sub eidx_key { $_[0]->{newsgroup} // $_[0]->{inboxdir} }
 
+# only used by NNTP, so we need ->mm anyways
+sub art_min { $_[0]->{-art_min} //= eval { $_[0]->mm(1)->min } }
+
+# used by IMAP, too, which tries to avoid ->mm (but ->{mm} is likely
+# faster since it's smaller iff available)
+sub art_max {
+        $_[0]->{-art_max} //= eval { $_[0]->{mm}->max } //
+                                eval { $_[0]->over(1)->max };
+}
+
 sub mailboxid { # rfc 8474, 8620, 8621
         my ($self, $imap_slice) = @_;
         my $pfx = defined($imap_slice) ? $self->{newsgroup} : $self->{name};
@@ -420,4 +392,6 @@ sub mailboxid { # rfc 8474, 8620, 8621
                 sprintf('-%x', uidvalidity($self) // 0)
 }
 
+sub thing_type { 'public inbox' }
+
 1;