-# Copyright (C) 2018 all contributors <meta@public-inbox.org>
+# Copyright (C) 2018-2019 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# for XOVER, OVER in NNTP, and feeds/homepage/threads in PSGI
-# Unlike Msgmap, this is an _UNSTABLE_ database which can be
+# Unlike Msgmap, this is an _UNSTABLE_ cache which can be
# tweaked/updated over time and rebuilt.
+#
+# Ghost messages (messages which are only referenced in References/In-Reply-To)
+# are denoted by a negative NNTP article number.
package PublicInbox::OverIdx;
use strict;
use warnings;
use base qw(PublicInbox::Over);
use IO::Handle;
use DBI qw(:sql_types); # SQL_BLOB
+use PublicInbox::MID qw/id_compress mids references/;
+use PublicInbox::SearchMsg qw(subject_normalized);
+use Compress::Zlib qw(compress);
+use PublicInbox::Search;
sub dbh_new {
my ($self) = @_;
my $dbh = $self->SUPER::dbh_new;
- $dbh->do('PRAGMA synchronous = OFF'); # commit_fsync instead
$dbh->do('PRAGMA journal_mode = TRUNCATE');
$dbh->do('PRAGMA cache_size = 80000');
create_tables($dbh);
$dbh;
}
-sub commit_fsync {
- my $fn = $_[0]->{filename};
- if (open my $fh, '+<', $fn) {
- $fh->sync;
- close $fh;
- }
-}
-
sub get_counter ($$) {
my ($dbh, $key) = @_;
my $sth = $dbh->prepare_cached(<<'', undef, 1);
}
sub delete_by_num {
- my ($self, $num) = @_;
+ my ($self, $num, $tid_ref) = @_;
my $dbh = $self->{dbh};
+ if ($tid_ref) {
+ my $sth = $dbh->prepare_cached(<<'', undef, 1);
+SELECT tid FROM over WHERE num = ? LIMIT 1
+
+ $sth->execute($num);
+ $$tid_ref = $sth->fetchrow_array; # may be undef
+ }
foreach (qw(over id2num)) {
$dbh->prepare_cached(<<"")->execute($num);
DELETE FROM $_ WHERE num = ?
$tid;
}
+sub parse_references ($$$) {
+ my ($smsg, $mid0, $mids) = @_;
+ my $mime = $smsg->{mime};
+ my $hdr = $mime->header_obj;
+ my $refs = references($hdr);
+ push(@$refs, @$mids) if scalar(@$mids) > 1;
+ return $refs if scalar(@$refs) == 0;
+
+ # prevent circular references here:
+ my %seen = ( $mid0 => 1 );
+ my @keep;
+ foreach my $ref (@$refs) {
+ if (length($ref) > PublicInbox::MID::MAX_MID_SIZE) {
+ warn "References: <$ref> too long, ignoring\n";
+ next;
+ }
+ next if $seen{$ref}++;
+ push @keep, $ref;
+ }
+ $smsg->{references} = '<'.join('> <', @keep).'>' if @keep;
+ \@keep;
+}
+
+# normalize subjects so they are suitable as pathnames for URLs
+# XXX: consider for removal
+sub subject_path ($) {
+ my ($subj) = @_;
+ $subj = subject_normalized($subj);
+ $subj =~ s![^a-zA-Z0-9_\.~/\-]+!_!g;
+ lc($subj);
+}
+
+sub add_overview {
+ my ($self, $mime, $bytes, $num, $oid, $mid0) = @_;
+ my $lines = $mime->body_raw =~ tr!\n!\n!;
+ my $smsg = bless {
+ mime => $mime,
+ mid => $mid0,
+ bytes => $bytes,
+ lines => $lines,
+ blob => $oid,
+ }, 'PublicInbox::SearchMsg';
+ my $mids = mids($mime->header_obj);
+ my $refs = parse_references($smsg, $mid0, $mids);
+ my $subj = $smsg->subject;
+ my $xpath;
+ if ($subj ne '') {
+ $xpath = subject_path($subj);
+ $xpath = id_compress($xpath);
+ }
+ my $dd = $smsg->to_doc_data($oid, $mid0);
+ utf8::encode($dd);
+ $dd = compress($dd);
+ my $values = [ $smsg->ts, $smsg->ds, $num, $mids, $refs, $xpath, $dd ];
+ add_over($self, $values);
+}
+
sub add_over {
my ($self, $values) = @_;
- my ($ts, $num, $mids, $refs, $xpath, $ddd) = @$values;
+ my ($ts, $ds, $num, $mids, $refs, $xpath, $ddd) = @$values;
my $old_tid;
my $vivified = 0;
$self->begin_lazy;
- $self->delete_by_num($num);
+ $self->delete_by_num($num, \$old_tid);
foreach my $mid (@$mids) {
my $v = 0;
each_by_mid($self, $mid, ['tid'], sub {
my $sid = $self->sid($xpath);
my $dbh = $self->{dbh};
my $sth = $dbh->prepare_cached(<<'');
-INSERT INTO over (num, tid, sid, ts, ddd)
-VALUES (?,?,?,?,?)
+INSERT INTO over (num, tid, sid, ts, ds, ddd)
+VALUES (?,?,?,?,?,?)
my $n = 0;
- my @v = ($num, $tid, $sid, $ts);
+ my @v = ($num, $tid, $sid, $ts, $ds);
foreach (@v) { $sth->bind_param(++$n, $_) }
$sth->bind_param(++$n, $ddd, SQL_BLOB);
$sth->execute;
}
}
-sub delete_articles {
- my ($self, $nums) = @_;
- my $dbh = $self->connect;
- $self->delete_by_num($_) foreach @$nums;
-}
-
+# returns number of removed messages
+# $oid may be undef to match only on $mid
sub remove_oid {
my ($self, $oid, $mid) = @_;
+ my $nr = 0;
$self->begin_lazy;
each_by_mid($self, $mid, ['ddd'], sub {
my ($smsg) = @_;
- $self->delete_by_num($smsg->{num}) if $smsg->{blob} eq $oid;
+ if (!defined($oid) || $smsg->{blob} eq $oid) {
+ $self->delete_by_num($smsg->{num});
+ $nr++;
+ }
1;
});
+ $nr;
+}
+
+sub num_mid0_for_oid {
+ my ($self, $oid, $mid) = @_;
+ my ($num, $mid0);
+ $self->begin_lazy;
+ each_by_mid($self, $mid, ['ddd'], sub {
+ my ($smsg) = @_;
+ my $blob = $smsg->{blob};
+ return 1 if (!defined($blob) || $blob ne $oid); # continue;
+ ($num, $mid0) = ($smsg->{num}, $smsg->{mid});
+ 0; # done
+ });
+ ($num, $mid0);
}
sub create_tables {
tid INTEGER NOT NULL,
sid INTEGER,
ts INTEGER,
+ ds INTEGER,
ddd VARBINARY, /* doc-data-deflated */
UNIQUE (num)
)
$dbh->do('CREATE INDEX IF NOT EXISTS idx_tid ON over (tid)');
$dbh->do('CREATE INDEX IF NOT EXISTS idx_sid ON over (sid)');
$dbh->do('CREATE INDEX IF NOT EXISTS idx_ts ON over (ts)');
+ $dbh->do('CREATE INDEX IF NOT EXISTS idx_ds ON over (ds)');
$dbh->do(<<'');
CREATE TABLE IF NOT EXISTS counter (