# Copyright (C) 2018 all contributors # License: AGPL-3.0+ # This interface wraps and mimics PublicInbox::Import # Used to write to V2 inboxes (see L). package PublicInbox::V2Writable; use strict; use warnings; use base qw(PublicInbox::Lock); use PublicInbox::SearchIdxPart; use PublicInbox::MIME; use PublicInbox::Git; use PublicInbox::Import; use PublicInbox::MID qw(mids); use PublicInbox::ContentId qw(content_id content_digest); use PublicInbox::Inbox; use PublicInbox::OverIdx; use PublicInbox::Msgmap; use PublicInbox::Spawn qw(spawn); use PublicInbox::SearchIdx; use IO::Handle; # an estimate of the post-packed size to the raw uncompressed size my $PACKING_FACTOR = 0.4; # assume 2 cores if GNU nproc(1) is not available sub nproc_parts () { my $n = int($ENV{NPROC} || `nproc 2>/dev/null` || 2); # subtract for the main process and git-fast-import $n -= 1; $n < 1 ? 1 : $n; } sub count_partitions ($) { my ($self) = @_; my $nparts = 0; my $xpfx = $self->{xpfx}; # always load existing partitions in case core count changes: # Also, partition count may change while -watch is running # due to -compact if (-d $xpfx) { foreach my $part (<$xpfx/*>) { -d $part && $part =~ m!/\d+\z! or next; eval { Search::Xapian::Database->new($part)->close; $nparts++; }; } } $nparts; } sub new { my ($class, $v2ibx, $creat) = @_; my $dir = $v2ibx->{mainrepo} or die "no mainrepo in inbox\n"; unless (-d $dir) { if ($creat) { require File::Path; File::Path::mkpath($dir); } else { die "$dir does not exist\n"; } } $v2ibx = PublicInbox::InboxWritable->new($v2ibx); $v2ibx->umask_prepare; my $xpfx = "$dir/xap" . PublicInbox::Search::SCHEMA_VERSION; my $self = { -inbox => $v2ibx, im => undef, # PublicInbox::Import parallel => 1, transact_bytes => 0, xpfx => $xpfx, over => PublicInbox::OverIdx->new("$xpfx/over.sqlite3", 1), lock_path => "$dir/inbox.lock", # limit each git repo (epoch) to 1GB or so rotate_bytes => int((1024 * 1024 * 1024) / $PACKING_FACTOR), last_commit => [], # git repo -> commit }; $self->{partitions} = count_partitions($self) || nproc_parts(); bless $self, $class; } sub init_inbox { my ($self, $parallel, $skip) = @_; $self->{parallel} = $parallel; $self->idx_init; my $epoch_max = -1; git_dir_latest($self, \$epoch_max); if (defined $skip && $epoch_max == -1) { $epoch_max = $skip; } $self->git_init($epoch_max >= 0 ? $epoch_max : 0); $self->done; } # returns undef on duplicate or spam # mimics Import::add and wraps it for v2 sub add { my ($self, $mime, $check_cb) = @_; $self->{-inbox}->with_umask(sub { _add($self, $mime, $check_cb) }); } sub _add { my ($self, $mime, $check_cb) = @_; # spam check: if ($check_cb) { $mime = $check_cb->($mime) or return; } # All pipes (> $^F) known to Perl 5.6+ have FD_CLOEXEC set, # as does SQLite 3.4.1+ (released in 2007-07-20), and # Xapian 1.3.2+ (released 2015-03-15). # For the most part, we can spawn git-fast-import without # leaking FDs to it... $self->idx_init; my $mid0; my $num = num_for($self, $mime, \$mid0); defined $num or return; # duplicate defined $mid0 or die "BUG: $mid0 undefined\n"; my $im = $self->importer; my $cmt = $im->add($mime); $cmt = $im->get_mark($cmt); $self->{last_commit}->[$self->{epoch_max}] = $cmt; my ($oid, $len, $msgref) = @{$im->{last_object}}; $self->{over}->add_overview($mime, $len, $num, $oid, $mid0); my $nparts = $self->{partitions}; my $part = $num % $nparts; my $idx = $self->idx_part($part); $idx->index_raw($len, $msgref, $num, $oid, $mid0, $mime); my $n = $self->{transact_bytes} += $len; if ($n > (PublicInbox::SearchIdx::BATCH_BYTES * $nparts)) { $self->checkpoint; } $cmt; } sub num_for { my ($self, $mime, $mid0) = @_; my $mids = mids($mime->header_obj); if (@$mids) { my $mid = $mids->[0]; my $num = $self->{mm}->mid_insert($mid); if (defined $num) { # common case $$mid0 = $mid; return $num; }; # crap, Message-ID is already known, hope somebody just resent: foreach my $m (@$mids) { # read-only lookup now safe to do after above barrier my $existing = $self->lookup_content($mime, $m); # easy, don't store duplicates # note: do not add more diagnostic info here since # it gets noisy on public-inbox-watch restarts return if $existing; } # AltId may pre-populate article numbers (e.g. X-Mail-Count # or NNTP article number), use that article number if it's # not in Over. my $altid = $self->{-inbox}->{altid}; if ($altid && grep(/:file=msgmap\.sqlite3\z/, @$altid)) { my $num = $self->{mm}->num_for($mid); if (defined $num && !$self->{over}->get_art($num)) { $$mid0 = $mid; return $num; } } # very unlikely: warn "<$mid> reused for mismatched content\n"; # try the rest of the mids for(my $i = $#$mids; $i >= 1; $i--) { my $m = $mids->[$i]; $num = $self->{mm}->mid_insert($m); if (defined $num) { warn "alternative <$m> for <$mid> found\n"; $$mid0 = $m; return $num; } } } # none of the existing Message-IDs are good, generate a new one: num_for_harder($self, $mime, $mid0); } sub num_for_harder { my ($self, $mime, $mid0) = @_; my $hdr = $mime->header_obj; my $dig = content_digest($mime); $$mid0 = PublicInbox::Import::digest2mid($dig, $hdr); my $num = $self->{mm}->mid_insert($$mid0); unless (defined $num) { # it's hard to spoof the last Received: header my @recvd = $hdr->header_raw('Received'); $dig->add("Received: $_") foreach (@recvd); $$mid0 = PublicInbox::Import::digest2mid($dig, $hdr); $num = $self->{mm}->mid_insert($$mid0); # fall back to a random Message-ID and give up determinism: until (defined($num)) { $dig->add(rand); $$mid0 = PublicInbox::Import::digest2mid($dig, $hdr); warn "using random Message-ID <$$mid0> as fallback\n"; $num = $self->{mm}->mid_insert($$mid0); } } PublicInbox::Import::append_mid($hdr, $$mid0); $num; } sub idx_part { my ($self, $part) = @_; $self->{idx_parts}->[$part]; } # idempotent sub idx_init { my ($self) = @_; return if $self->{idx_parts}; my $ibx = $self->{-inbox}; # do not leak read-only FDs to child processes, we only have these # FDs for duplicate detection so they should not be # frequently activated. delete $ibx->{$_} foreach (qw(git mm search)); my $indexlevel = $ibx->{indexlevel}; if ($indexlevel && $indexlevel eq 'basic') { $self->{parallel} = 0; } if ($self->{parallel}) { pipe(my ($r, $w)) or die "pipe failed: $!"; # pipe for barrier notifications doesn't need to be big, # 1031: F_SETPIPE_SZ fcntl($w, 1031, 4096) if $^O eq 'linux'; $self->{bnote} = [ $r, $w ]; $w->autoflush(1); } my $over = $self->{over}; $ibx->umask_prepare; $ibx->with_umask(sub { $self->lock_acquire; $over->create; # -compact can change partition count while -watch is idle my $nparts = count_partitions($self); if ($nparts && $nparts != $self->{partitions}) { $self->{partitions} = $nparts; } # need to create all parts before initializing msgmap FD my $max = $self->{partitions} - 1; # idx_parts must be visible to all forked processes my $idx = $self->{idx_parts} = []; for my $i (0..$max) { push @$idx, PublicInbox::SearchIdxPart->new($self, $i); } # Now that all subprocesses are up, we can open the FDs # for SQLite: my $mm = $self->{mm} = PublicInbox::Msgmap->new_file( "$self->{-inbox}->{mainrepo}/msgmap.sqlite3", 1); $mm->{dbh}->begin_work; }); } sub purge_oids { my ($self, $purge) = @_; # $purge = { $object_id => 1, ... } $self->done; my $pfx = "$self->{-inbox}->{mainrepo}/git"; my $purges = []; my $max = $self->{epoch_max}; unless (defined($max)) { defined(my $latest = git_dir_latest($self, \$max)) or return; $self->{epoch_max} = $max; } foreach my $i (0..$max) { my $git_dir = "$pfx/$i.git"; -d $git_dir or next; my $git = PublicInbox::Git->new($git_dir); my $im = $self->import_init($git, 0, 1); $purges->[$i] = $im->purge_oids($purge); $im->done; } $purges; } sub content_ids ($) { my ($mime) = @_; my @cids = ( content_id($mime) ); # Email::MIME->as_string doesn't always round-trip, so we may # use a second content_id my $rt = content_id(PublicInbox::MIME->new(\($mime->as_string))); push @cids, $rt if $cids[0] ne $rt; \@cids; } sub content_matches ($$) { my ($cids, $existing) = @_; my $cid = content_id($existing); foreach (@$cids) { return 1 if $_ eq $cid } 0 } sub remove_internal { my ($self, $mime, $cmt_msg, $purge) = @_; $self->idx_init; my $im = $self->importer unless $purge; my $over = $self->{over}; my $cids = content_ids($mime); my $parts = $self->{idx_parts}; my $mm = $self->{mm}; my $removed; my $mids = mids($mime->header_obj); # We avoid introducing new blobs into git since the raw content # can be slightly different, so we do not need the user-supplied # message now that we have the mids and content_id $mime = undef; my $mark; foreach my $mid (@$mids) { my %gone; my ($id, $prev); while (my $smsg = $over->next_by_mid($mid, \$id, \$prev)) { my $msg = get_blob($self, $smsg); if (!defined($msg)) { warn "broken smsg for $mid\n"; next; # continue } my $orig = $$msg; my $cur = PublicInbox::MIME->new($msg); if (content_matches($cids, $cur)) { $smsg->{mime} = $cur; $gone{$smsg->{num}} = [ $smsg, \$orig ]; } } my $n = scalar keys %gone; next unless $n; if ($n > 1) { warn "BUG: multiple articles linked to <$mid>\n", join(',', sort keys %gone), "\n"; } foreach my $num (keys %gone) { my ($smsg, $orig) = @{$gone{$num}}; $mm->num_delete($num); # $removed should only be set once assuming # no bugs in our deduplication code: $removed = $smsg; my $oid = $smsg->{blob}; if ($purge) { $purge->{$oid} = 1; } else { ($mark, undef) = $im->remove($orig, $cmt_msg); } $orig = undef; $self->unindex_oid_remote($oid, $mid); } } if (defined $mark) { my $cmt = $im->get_mark($mark); $self->{last_commit}->[$self->{epoch_max}] = $cmt; } if ($purge && scalar keys %$purge) { return purge_oids($self, $purge); } $removed; } sub remove { my ($self, $mime, $cmt_msg) = @_; $self->{-inbox}->with_umask(sub { remove_internal($self, $mime, $cmt_msg); }); } sub purge { my ($self, $mime) = @_; my $purges = $self->{-inbox}->with_umask(sub { remove_internal($self, $mime, undef, {}); }) or return; $self->idx_init if @$purges; # ->done is called on purges for my $i (0..$#$purges) { defined(my $cmt = $purges->[$i]) or next; $self->{last_commit}->[$i] = $cmt; } $purges; } sub last_commit_part ($$;$) { my ($self, $i, $cmt) = @_; my $v = PublicInbox::Search::SCHEMA_VERSION(); $self->{mm}->last_commit_xap($v, $i, $cmt); } sub set_last_commits ($) { my ($self) = @_; defined(my $epoch_max = $self->{epoch_max}) or return; my $last_commit = $self->{last_commit}; foreach my $i (0..$epoch_max) { defined(my $cmt = $last_commit->[$i]) or next; $last_commit->[$i] = undef; last_commit_part($self, $i, $cmt); } } sub barrier_init { my ($self, $n) = @_; $self->{bnote} or return; --$n; my $barrier = { map { $_ => 1 } (0..$n) }; } sub barrier_wait { my ($self, $barrier) = @_; my $bnote = $self->{bnote} or return; my $r = $bnote->[0]; while (scalar keys %$barrier) { defined(my $l = $r->getline) or die "EOF on barrier_wait: $!"; $l =~ /\Abarrier (\d+)/ or die "bad line on barrier_wait: $l"; delete $barrier->{$1} or die "bad part[$1] on barrier wait"; } } sub checkpoint ($;$) { my ($self, $wait) = @_; if (my $im = $self->{im}) { if ($wait) { $im->barrier; } else { $im->checkpoint; } } my $parts = $self->{idx_parts}; if ($parts) { my $dbh = $self->{mm}->{dbh}; # SQLite msgmap data is second in importance $dbh->commit; # SQLite overview is third $self->{over}->commit_lazy; # Now deal with Xapian if ($wait) { my $barrier = $self->barrier_init(scalar @$parts); # each partition needs to issue a barrier command $_->remote_barrier for @$parts; # wait for each Xapian partition $self->barrier_wait($barrier); } else { $_->remote_commit for @$parts; } # last_commit is special, don't commit these until # remote partitions are done: $dbh->begin_work; set_last_commits($self); $dbh->commit; $dbh->begin_work; } $self->{transact_bytes} = 0; } # issue a write barrier to ensure all data is visible to other processes # and read-only ops. Order of data importance is: git > SQLite > Xapian sub barrier { checkpoint($_[0], 1) }; sub done { my ($self) = @_; my $im = delete $self->{im}; $im->done if $im; # PublicInbox::Import::done checkpoint($self); my $mm = delete $self->{mm}; $mm->{dbh}->commit if $mm; my $parts = delete $self->{idx_parts}; if ($parts) { $_->remote_close for @$parts; } $self->{over}->disconnect; delete $self->{bnote}; $self->{transact_bytes} = 0; $self->lock_release if $parts; $self->{-inbox}->git->cleanup; } sub fill_alternates ($$) { my ($self, $epoch) = @_; my $pfx = "$self->{-inbox}->{mainrepo}/git"; my $all = "$self->{-inbox}->{mainrepo}/all.git"; my @cmd; unless (-d $all) { @cmd = (qw(git init --bare -q), $all); PublicInbox::Import::run_die(\@cmd); @cmd = (qw/git config/, "--file=$all/config", 'repack.writeBitmaps', 'true'); PublicInbox::Import::run_die(\@cmd); } @cmd = (qw/git config/, "--file=$pfx/$epoch.git/config", 'include.path', '../../all.git/config'); PublicInbox::Import::run_die(\@cmd); my $alt = "$all/objects/info/alternates"; my %alts; my @add; if (-e $alt) { open(my $fh, '<', $alt) or die "open < $alt: $!\n"; %alts = map { chomp; $_ => 1 } (<$fh>); } foreach my $i (0..$epoch) { my $dir = "../../git/$i.git/objects"; push @add, $dir if !$alts{$dir} && -d "$pfx/$i.git"; } return unless @add; open my $fh, '>>', $alt or die "open >> $alt: $!\n"; foreach my $dir (@add) { print $fh "$dir\n" or die "print >> $alt: $!\n"; } close $fh or die "close $alt: $!\n"; } sub git_init { my ($self, $epoch) = @_; my $git_dir = "$self->{-inbox}->{mainrepo}/git/$epoch.git"; my @cmd = (qw(git init --bare -q), $git_dir); PublicInbox::Import::run_die(\@cmd); fill_alternates($self, $epoch); $git_dir } sub git_dir_latest { my ($self, $max) = @_; $$max = -1; my $pfx = "$self->{-inbox}->{mainrepo}/git"; return unless -d $pfx; my $latest; opendir my $dh, $pfx or die "opendir $pfx: $!\n"; while (defined(my $git_dir = readdir($dh))) { $git_dir =~ m!\A(\d+)\.git\z! or next; if ($1 > $$max) { $$max = $1; $latest = "$pfx/$git_dir"; } } $latest; } sub importer { my ($self) = @_; my $im = $self->{im}; if ($im) { if ($im->{bytes_added} < $self->{rotate_bytes}) { return $im; } else { $self->{im} = undef; $im->done; $im = undef; $self->checkpoint; my $git_dir = $self->git_init(++$self->{epoch_max}); my $git = PublicInbox::Git->new($git_dir); return $self->import_init($git, 0); } } my $epoch = 0; my $max; my $latest = git_dir_latest($self, \$max); if (defined $latest) { my $git = PublicInbox::Git->new($latest); my $packed_bytes = $git->packed_bytes; my $unpacked_bytes = $packed_bytes / $PACKING_FACTOR; if ($unpacked_bytes >= $self->{rotate_bytes}) { $epoch = $max + 1; } else { $self->{epoch_max} = $max; return $self->import_init($git, $packed_bytes); } } $self->{epoch_max} = $epoch; $latest = $self->git_init($epoch); $self->import_init(PublicInbox::Git->new($latest), 0); } sub import_init { my ($self, $git, $packed_bytes, $tmp) = @_; my $im = PublicInbox::Import->new($git, undef, undef, $self->{-inbox}); $im->{bytes_added} = int($packed_bytes / $PACKING_FACTOR); $im->{want_object_info} = 1; $im->{lock_path} = undef; $im->{path_type} = 'v2'; $self->{im} = $im unless $tmp; $im; } # XXX experimental sub diff ($$$) { my ($mid, $cur, $new) = @_; use File::Temp qw(tempfile); my ($ah, $an) = tempfile('email-cur-XXXXXXXX', TMPDIR => 1); print $ah $cur->as_string or die "print: $!"; close $ah or die "close: $!"; my ($bh, $bn) = tempfile('email-new-XXXXXXXX', TMPDIR => 1); PublicInbox::Import::drop_unwanted_headers($new); print $bh $new->as_string or die "print: $!"; close $bh or die "close: $!"; my $cmd = [ qw(diff -u), $an, $bn ]; print STDERR "# MID conflict <$mid>\n"; my $pid = spawn($cmd, undef, { 1 => 2 }); defined $pid or die "diff failed to spawn $!"; waitpid($pid, 0) == $pid or die "diff did not finish"; unlink($an, $bn); } sub get_blob ($$) { my ($self, $smsg) = @_; if (my $im = $self->{im}) { my $msg = $im->cat_blob($smsg->{blob}); return $msg if $msg; } # older message, should be in alternates my $ibx = $self->{-inbox}; $ibx->msg_by_smsg($smsg); } sub lookup_content { my ($self, $mime, $mid) = @_; my $over = $self->{over}; my $cids = content_ids($mime); my ($id, $prev); while (my $smsg = $over->next_by_mid($mid, \$id, \$prev)) { my $msg = get_blob($self, $smsg); if (!defined($msg)) { warn "broken smsg for $mid\n"; next; } my $cur = PublicInbox::MIME->new($msg); if (content_matches($cids, $cur)) { $smsg->{mime} = $cur; return $smsg; } # XXX DEBUG_DIFF is experimental and may be removed diff($mid, $cur, $mime) if $ENV{DEBUG_DIFF}; } undef; } sub atfork_child { my ($self) = @_; my $fh = delete $self->{reindex_pipe}; close $fh if $fh; if (my $parts = $self->{idx_parts}) { $_->atfork_child foreach @$parts; } if (my $im = $self->{im}) { $im->atfork_child; } die "unexpected mm" if $self->{mm}; close $self->{bnote}->[0] or die "close bnote[0]: $!\n"; $self->{bnote}->[1]; } sub mark_deleted { my ($self, $D, $git, $oid) = @_; my $msgref = $git->cat_file($oid); my $mime = PublicInbox::MIME->new($$msgref); my $mids = mids($mime->header_obj); my $cid = content_id($mime); foreach my $mid (@$mids) { $D->{"$mid\0$cid"} = $oid; } } sub reindex_oid { my ($self, $mm_tmp, $D, $git, $oid, $regen, $reindex) = @_; my $len; my $msgref = $git->cat_file($oid, \$len); my $mime = PublicInbox::MIME->new($$msgref); my $mids = mids($mime->header_obj); my $cid = content_id($mime); # get the NNTP article number we used before, highest number wins # and gets deleted from mm_tmp; my $mid0; my $num = -1; my $del = 0; foreach my $mid (@$mids) { $del += delete($D->{"$mid\0$cid"}) ? 1 : 0; my $n = $mm_tmp->num_for($mid); if (defined $n && $n > $num) { $mid0 = $mid; $num = $n; $self->{mm}->mid_set($num, $mid0); } } if (!defined($mid0) && $regen && !$del) { $num = $$regen--; die "BUG: ran out of article numbers\n" if $num <= 0; my $mm = $self->{mm}; foreach my $mid (reverse @$mids) { if ($mm->mid_set($num, $mid) == 1) { $mid0 = $mid; last; } } if (!defined($mid0)) { my $id = '<' . join('> <', @$mids) . '>'; warn "Message-ID $id unusable for $num\n"; foreach my $mid (@$mids) { defined(my $n = $mm->num_for($mid)) or next; warn "#$n previously mapped for <$mid>\n"; } } } if (!defined($mid0) || $del) { if (!defined($mid0) && $del) { # expected for deletes $num = $$regen--; $self->{mm}->num_highwater($num) unless $reindex; return } my $id = '<' . join('> <', @$mids) . '>'; defined($mid0) or warn "Skipping $id, no article number found\n"; if ($del && defined($mid0)) { warn "$id was deleted $del " . "time(s) but mapped to article #$num\n"; } return; } $mm_tmp->mid_delete($mid0) or die "failed to delete <$mid0> for article #$num\n"; $self->{over}->add_overview($mime, $len, $num, $oid, $mid0); my $nparts = $self->{partitions}; my $part = $num % $nparts; my $idx = $self->idx_part($part); $idx->index_raw($len, $msgref, $num, $oid, $mid0, $mime); my $n = $self->{transact_bytes} += $len; if ($n > (PublicInbox::SearchIdx::BATCH_BYTES * $nparts)) { $git->cleanup; $mm_tmp->atfork_prepare; $self->done; # release lock # allow -watch or -mda to write... $self->idx_init; # reacquire lock $mm_tmp->atfork_parent; } } # only update last_commit for $i on reindex iff newer than current sub update_last_commit { my ($self, $git, $i, $cmt) = @_; my $last = last_commit_part($self, $i); if (defined $last && is_ancestor($git, $last, $cmt)) { my @cmd = (qw(rev-list --count), "$last..$cmt"); chomp(my $n = $git->qx(@cmd)); return if $n ne '' && $n == 0; } last_commit_part($self, $i, $cmt); } sub git_dir_n ($$) { "$_[0]->{-inbox}->{mainrepo}/git/$_[1].git" } sub last_commits { my ($self, $epoch_max) = @_; my $heads = []; for (my $i = $epoch_max; $i >= 0; $i--) { $heads->[$i] = last_commit_part($self, $i); } $heads; } *is_ancestor = *PublicInbox::SearchIdx::is_ancestor; sub index_prepare { my ($self, $opts, $epoch_max, $ranges) = @_; my $regen_max = 0; my $head = $self->{-inbox}->{ref_head} || 'refs/heads/master'; for (my $i = $epoch_max; $i >= 0; $i--) { die "already indexing!\n" if $self->{index_pipe}; my $git_dir = git_dir_n($self, $i); -d $git_dir or next; # missing parts are fine my $git = PublicInbox::Git->new($git_dir); chomp(my $tip = $git->qx(qw(rev-parse -q --verify), $head)); next if $?; # new repo my $range; if (defined(my $cur = $ranges->[$i])) { $range = "$cur..$tip"; if (is_ancestor($git, $cur, $tip)) { # common case my $n = $git->qx(qw(rev-list --count), $range); chomp($n); if ($n == 0) { $ranges->[$i] = undef; next; } } else { warn <<""; discontiguous range: $range Rewritten history? (in $git_dir) my $base = $git->qx('merge-base', $tip, $cur); chomp $base; if ($base) { $range = "$base..$tip"; warn "found merge-base: $base\n" } else { $range = $tip; warn <<""; discarding history at $cur } warn <<""; reindexing $git_dir starting at $range $self->{"unindex-range.$i"} = "$base..$cur"; } } else { $range = $tip; # all of it } $ranges->[$i] = $range; # can't use 'rev-list --count' if we use --diff-filter my $fh = $git->popen(qw(log --pretty=tformat:%H --no-notes --no-color --no-renames --diff-filter=AM), $range, '--', 'm'); ++$regen_max while <$fh>; } \$regen_max; } sub unindex_oid_remote { my ($self, $oid, $mid) = @_; $_->remote_remove($oid, $mid) foreach @{$self->{idx_parts}}; $self->{over}->remove_oid($oid, $mid); } sub unindex_oid { my ($self, $git, $oid) = @_; my $msgref = $git->cat_file($oid); my $mime = PublicInbox::MIME->new($msgref); my $mids = mids($mime->header_obj); $mime = $msgref = undef; my $over = $self->{over}; foreach my $mid (@$mids) { my %gone; my ($id, $prev); while (my $smsg = $over->next_by_mid($mid, \$id, \$prev)) { $gone{$smsg->{num}} = 1 if $oid eq $smsg->{blob}; 1; # continue } my $n = scalar keys %gone; next unless $n; if ($n > 1) { warn "BUG: multiple articles linked to $oid\n", join(',',sort keys %gone), "\n"; } foreach my $num (keys %gone) { $self->{unindexed}->{$_}++; $self->{mm}->num_delete($num); } $self->unindex_oid_remote($oid, $mid); } } my $x40 = qr/[a-f0-9]{40}/; sub unindex { my ($self, $opts, $git, $unindex_range) = @_; my $un = $self->{unindexed} ||= {}; # num => removal count my $before = scalar keys %$un; my @cmd = qw(log --raw -r --no-notes --no-color --no-abbrev --no-renames); my $fh = $self->{reindex_pipe} = $git->popen(@cmd, $unindex_range); while (<$fh>) { /\A:\d{6} 100644 $x40 ($x40) [AM]\tm$/o or next; $self->unindex_oid($git, $1); } delete $self->{reindex_pipe}; $fh = undef; return unless $opts->{prune}; my $after = scalar keys %$un; return if $before == $after; # ensure any blob can not longer be accessed via dumb HTTP PublicInbox::Import::run_die(['git', "--git-dir=$git->{git_dir}", qw(-c gc.reflogExpire=now gc --prune=all)]); } sub index_sync { my ($self, $opts) = @_; $opts ||= {}; my $epoch_max; my $latest = git_dir_latest($self, \$epoch_max); return unless defined $latest; $self->idx_init; # acquire lock my $mm_tmp = $self->{mm}->tmp_clone; my $reindex = $opts->{reindex}; my $ranges = $reindex ? [] : $self->last_commits($epoch_max); my $high = $self->{mm}->num_highwater(); my $regen = $self->index_prepare($opts, $epoch_max, $ranges); $$regen += $high if $high; my $D = {}; # "$mid\0$cid" => $oid my @cmd = qw(log --raw -r --pretty=tformat:%H --no-notes --no-color --no-abbrev --no-renames); # work backwards through history my $last_commit = []; for (my $i = $epoch_max; $i >= 0; $i--) { my $git_dir = git_dir_n($self, $i); die "already reindexing!\n" if delete $self->{reindex_pipe}; -d $git_dir or next; # missing parts are fine fill_alternates($self, $i); my $git = PublicInbox::Git->new($git_dir); my $unindex = delete $self->{"unindex-range.$i"}; $self->unindex($opts, $git, $unindex) if $unindex; defined(my $range = $ranges->[$i]) or next; my $fh = $self->{reindex_pipe} = $git->popen(@cmd, $range); my $cmt; while (<$fh>) { if (/\A$x40$/o && !defined($cmt)) { chomp($cmt = $_); } elsif (/\A:\d{6} 100644 $x40 ($x40) [AM]\tm$/o) { $self->reindex_oid($mm_tmp, $D, $git, $1, $regen, $reindex); } elsif (/\A:\d{6} 100644 $x40 ($x40) [AM]\td$/o) { $self->mark_deleted($D, $git, $1); } } $fh = undef; delete $self->{reindex_pipe}; $self->update_last_commit($git, $i, $cmt) if defined $cmt; } # unindex is required for leftovers if "deletes" affect messages # in a previous fetch+index window: if (scalar keys %$D) { my $git = $self->{-inbox}->git; $self->unindex_oid($git, $_) for values %$D; $git->cleanup; } $self->done; } 1;