# Copyright (C) 2018 all contributors
# License: AGPL-3.0+
# This interface wraps and mimics PublicInbox::Import
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) = @_;
$self->{parallel} = $parallel;
$self->idx_init;
my $epoch_max = -1;
git_dir_latest($self, \$epoch_max);
$self->git_init($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
$$mid0 = $mid;
return $num;
};
# crap, Message-ID is already known, hope somebody just resent:
foreach my $m (@$mids) {
# read-only lookup now safe to do after above barrier
my $existing = $self->lookup_content($mime, $m);
# easy, don't store duplicates
# note: do not add more diagnostic info here since
# it gets noisy on public-inbox-watch restarts
return if $existing;
}
# very unlikely:
warn "<$mid> reused for mismatched content\n";
# try the rest of the mids
for(my $i = $#$mids; $i >= 1; $i--) {
my $m = $mids->[$i];
$num = $self->{mm}->mid_insert($m);
if (defined $num) {
warn "alternative <$m> for <$mid> found\n";
$$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));
if ($self->{parallel}) {
pipe(my ($r, $w)) or die "pipe failed: $!";
$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 = [];
foreach my $i (0..$self->{epoch_max}) {
my $git = PublicInbox::Git->new("$pfx/$i.git");
my $im = $self->import_init($git, 0, 1);
$purges->[$i] = $im->purge_oids($purge);
}
$purges;
}
sub content_ids ($) {
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, {});
});
$self->idx_init if @$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;
}
sub git_init {
my ($self, $epoch) = @_;
my $pfx = "$self->{-inbox}->{mainrepo}/git";
my $git_dir = "$pfx/$epoch.git";
my @cmd = (qw(git init --bare -q), $git_dir);
PublicInbox::Import::run_die(\@cmd);
my $all = "$self->{-inbox}->{mainrepo}/all.git";
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=$git_dir/config",
'include.path', '../../all.git/config');
PublicInbox::Import::run_die(\@cmd);
my $alt = "$all/objects/info/alternates";
my $new_obj_dir = "../../git/$epoch.git/objects";
my %alts;
if (-e $alt) {
open(my $fh, '<', $alt) or die "open < $alt: $!\n";
%alts = map { chomp; $_ => 1 } (<$fh>);
}
return $git_dir if $alts{$new_obj_dir};
open my $fh, '>>', $alt or die "open >> $alt: $!\n";
print $fh "$new_obj_dir\n" or die "print >> $alt: $!\n";
close $fh or die "close $alt: $!\n";
$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 = $git->packed_bytes;
if ($packed_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($$msgref);
my $mids = mids($mime->header_obj);
my $cid = content_id($mime);
foreach my $mid (@$mids) {
$D->{"$mid\0$cid"} = 1;
}
}
sub reindex_oid {
my ($self, $mm_tmp, $D, $git, $oid, $regen) = @_;
my $len;
my $msgref = $git->cat_file($oid, \$len);
my $mime = PublicInbox::MIME->new($$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"} || 0);
my $n = $mm_tmp->num_for($mid);
if (defined $n && $n > $num) {
$mid0 = $mid;
$num = $n;
}
}
if (!defined($mid0) && $regen && !$del) {
$num = $$regen--;
die "BUG: ran out of article numbers\n" if $num <= 0;
my $mm = $self->{mm};
foreach my $mid (reverse @$mids) {
if ($mm->mid_set($num, $mid) == 1) {
$mid0 = $mid;
last;
}
}
if (!defined($mid0)) {
my $id = '<' . join('> <', @$mids) . '>';
warn "Message-ID $id unusable for $num\n";
foreach my $mid (@$mids) {
defined(my $n = $mm->num_for($mid)) or next;
warn "#$n previously mapped for <$mid>\n";
}
}
}
if (!defined($mid0) || $del) {
if (!defined($mid0) && $del) { # expected for deletes
$$regen--;
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('rev-parse', $head));
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";
}
$self->{unindexed}->{$_}++ foreach keys %gone;
$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 $ranges = $opts->{reindex} ? [] : $self->last_commits($epoch_max);
my ($min, $max) = $mm_tmp->minmax;
my $regen = $self->index_prepare($opts, $epoch_max, $ranges);
$$regen += $max if $max;
my $D = {};
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
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);
} 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 $cmt;
}
my @d = sort keys %$D;
if (@d) {
warn "BUG: ", scalar(@d)," unseen deleted messages marked\n";
foreach (@d) {
my ($mid, undef) = split(/\0/, $_, 2);
warn "<$mid>\n";
}
}
$self->done;
}
1;