package PublicInbox::V2Writable;
use strict;
use warnings;
-use Fcntl qw(:flock :DEFAULT);
+use base qw(PublicInbox::Lock);
use PublicInbox::SearchIdxPart;
use PublicInbox::SearchIdxSkeleton;
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;
# 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
-my $NPROC = int($ENV{NPROC} || `nproc 2>/dev/null` || 2);
+sub nproc () {
+ int($ENV{NPROC} || `nproc 2>/dev/null` || 2);
+}
sub new {
my ($class, $v2ibx, $creat) = @_;
die "$dir does not exist\n";
}
}
+
+ my $nparts = 0;
+ my $xpfx = "$dir/xap" . PublicInbox::Search::SCHEMA_VERSION;
+
+ # always load existing partitions in case core count changes:
+ if (-d $xpfx) {
+ foreach my $part (<$xpfx/*>) {
+ -d $part && $part =~ m!/\d+\z! or next;
+ eval {
+ Search::Xapian::Database->new($part)->close;
+ $nparts++;
+ };
+ }
+ }
+ $nparts = nproc() if ($nparts == 0);
+
+ $v2ibx = PublicInbox::InboxWritable->new($v2ibx);
my $self = {
-inbox => $v2ibx,
im => undef, # PublicInbox::Import
- xap_rw => undef, # PublicInbox::V2SearchIdx
- xap_ro => undef,
- partitions => $NPROC,
+ partitions => $nparts,
+ parallel => 1,
transact_bytes => 0,
+ lock_path => "$dir/inbox.lock",
# limit each repo to 1GB or so
rotate_bytes => int((1024 * 1024 * 1024) / $PACKING_FACTOR),
};
- bless $self, $class
+ bless $self, $class;
+}
+
+sub init_inbox {
+ my ($self, $parallel) = @_;
+ $self->{parallel} = $parallel;
+ $self->idx_init;
+ my $max_git = -1;
+ git_dir_latest($self, \$max_git);
+ $self->git_init($max_git >= 0 ? $max_git : 0);
+ $self->done;
}
# returns undef on duplicate or spam
# mimics Import::add and wraps it for v2
sub add {
my ($self, $mime, $check_cb) = @_;
- my $existing = $self->lookup_content($mime);
- if ($existing) {
- return undef if $existing->type eq 'mail'; # duplicate
+ # spam check:
+ if ($check_cb) {
+ $mime = $check_cb->($mime) or return;
}
- my $im = $self->importer;
+ # 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;
- # im->add returns undef if check_cb fails
- my $cmt = $im->add($mime, $check_cb) or return;
+ 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);
- my $oid = $im->{last_object_id};
- my ($len, $msgref) = @{$im->{last_object}};
+ my ($oid, $len, $msgref) = @{$im->{last_object}};
- $self->idx_init;
- my $num = $self->{skel}->index_mm($mime, 1);
my $nparts = $self->{partitions};
my $part = $num % $nparts;
my $idx = $self->idx_part($part);
- $idx->index_raw($len, $msgref, $num, $oid);
+ $idx->index_raw($len, $msgref, $num, $oid, $mid0, $mime);
my $n = $self->{transact_bytes} += $len;
if ($n > (PublicInbox::SearchIdx::BATCH_BYTES * $nparts)) {
$self->checkpoint;
$mime;
}
+sub num_for {
+ my ($self, $mime, $mid0) = @_;
+ my $mids = mids($mime->header_obj);
+ if (@$mids) {
+ my $mid = $mids->[0];
+ my $num = $self->{skel}->{mm}->mid_insert($mid);
+ if (defined $num) { # common case
+ $$mid0 = $mid;
+ return $num;
+ };
+
+ # crap, Message-ID is already known, hope somebody just resent:
+ $self->barrier;
+ foreach my $m (@$mids) {
+ # read-only lookup now safe to do after above barrier
+ my $existing = $self->lookup_content($mime, $m);
+ # easy, don't store duplicates
+ # note: do not add more diagnostic info here since
+ # it gets noisy on public-inbox-watch restarts
+ return if $existing;
+ }
+
+ # very unlikely:
+ warn "<$mid> reused for mismatched content\n";
+
+ # try the rest of the mids
+ for(my $i = $#$mids; $i >= 1; $i--) {
+ my $m = $mids->[$i];
+ $num = $self->{skel}->{mm}->mid_insert($m);
+ if (defined $num) {
+ warn "alternative <$m> for <$mid> found\n";
+ $$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);
+ $$mid0 = PublicInbox::Import::digest2mid($dig);
+ my $num = $self->{skel}->{mm}->mid_insert($$mid0);
+ unless (defined $num) {
+ # it's hard to spoof the last Received: header
+ my @recvd = $hdr->header_raw('Received');
+ $dig->add("Received: $_") foreach (@recvd);
+ $$mid0 = PublicInbox::Import::digest2mid($dig);
+ $num = $self->{skel}->{mm}->mid_insert($$mid0);
+
+ # fall back to a random Message-ID and give up determinism:
+ until (defined($num)) {
+ $dig->add(rand);
+ $$mid0 = PublicInbox::Import::digest2mid($dig);
+ warn "using random Message-ID <$$mid0> as fallback\n";
+ $num = $self->{skel}->{mm}->mid_insert($$mid0);
+ }
+ }
+ PublicInbox::Import::append_mid($hdr, $$mid0);
+ $num;
+}
+
sub idx_part {
my ($self, $part) = @_;
$self->{idx_parts}->[$part];
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));
+
+ $ibx->umask_prepare;
+ $ibx->with_umask(sub {
+ $self->lock_acquire;
+
+ # first time initialization, first we create the skeleton pipe:
+ my $skel = PublicInbox::SearchIdxSkeleton->new($self);
+ $self->{skel} = $skel;
+
+ # need to create all parts before initializing msgmap FD
+ my $max = $self->{partitions} - 1;
+ @{$self->{idx_parts}} = map {
+ PublicInbox::SearchIdxPart->new($self, $_, $skel);
+ } (0..$max);
- # first time initialization, first we create the skeleton pipe:
- my $skel = $self->{skel} = PublicInbox::SearchIdxSkeleton->new($self);
+ # Now that all subprocesses are up, we can open the FD for SQLite:
+ $skel->_msgmap_init->{dbh}->begin_work;
+ });
+}
- # need to create all parts before initializing msgmap FD
- my $max = $self->{partitions} - 1;
- my $idx = $self->{idx_parts} = [];
- for my $i (0..$max) {
- push @$idx, PublicInbox::SearchIdxPart->new($self, $i, $skel);
+sub purge_oids {
+ my ($self, $purge) = @_; # $purge = { $object_id => 1, ... }
+ $self->done;
+ my $pfx = "$self->{-inbox}->{mainrepo}/git";
+ foreach my $i (0..$self->{max_git}) {
+ my $git = PublicInbox::Git->new("$pfx/$i.git");
+ my $im = $self->import_init($git, 0);
+ $im->purge_oids($purge);
}
+}
+
+sub remove_internal {
+ my ($self, $mime, $cmt_msg, $purge) = @_;
+ $self->barrier;
+ $self->idx_init;
+ my $im = $self->importer unless $purge;
+ my $ibx = $self->{-inbox};
+ my $srch = $ibx->search;
+ my $cid = content_id($mime);
+ my $skel = $self->{skel};
+ my $parts = $self->{idx_parts};
+ my $mm = $skel->{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;
+
+ foreach my $mid (@$mids) {
+ $srch->reopen->each_smsg_by_mid($mid, sub {
+ my ($smsg) = @_;
+ $smsg->load_expand;
+ my $msg = $ibx->msg_by_smsg($smsg);
+ if (!defined($msg)) {
+ warn "broken smsg for $mid\n";
+ return 1; # continue
+ }
+ my $orig = $$msg;
+ my $cur = PublicInbox::MIME->new($msg);
+ if (content_id($cur) eq $cid) {
+ $mm->num_delete($smsg->num);
+ # $removed should only be set once assuming
+ # no bugs in our deduplication code:
+ $removed = $smsg;
+ $removed->{mime} = $cur;
+ my $oid = $smsg->{blob};
+ if ($purge) {
+ $purge->{$oid} = 1;
+ } else {
+ $im->remove(\$orig, $cmt_msg);
+ }
+ $orig = undef;
+ $removed->num; # memoize this for callers
- # Now that all subprocesses are up, we can open the FD for SQLite:
- $skel->_msgmap_init->{dbh}->begin_work;
+ foreach my $idx (@$parts, $skel) {
+ $idx->remote_remove($oid, $mid);
+ }
+ }
+ 1; # continue
+ });
+ $self->barrier;
+ }
+ if ($purge && scalar keys %$purge) {
+ purge_oids($self, $purge);
+ }
+ $removed;
}
sub remove {
- my ($self, $mime, $msg) = @_;
- my $existing = $self->lookup_content($mime) or return;
-
- # don't touch ghosts or already junked messages
- return unless $existing->type eq 'mail';
+ my ($self, $mime, $cmt_msg) = @_;
+ remove_internal($self, $mime, $cmt_msg);
+}
- # always write removals to the current (latest) git repo since
- # we process chronologically
- my $im = $self->importer;
- my ($cmt, undef) = $im->remove($mime, $msg);
- $cmt = $im->get_mark($cmt);
- $self->unindex_msg($existing, $cmt);
+sub purge {
+ my ($self, $mime) = @_;
+ remove_internal($self, $mime, undef, {});
}
+
sub done {
my ($self) = @_;
+ my $locked = defined $self->{idx_parts};
my $im = delete $self->{im};
$im->done if $im; # PublicInbox::Import::done
$self->searchidx_checkpoint(0);
+ $self->lock_release if $locked;
}
sub checkpoint {
$self->searchidx_checkpoint(1);
}
+# 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 {
+ my ($self) = @_;
+
+ if (my $im = $self->{im}) {
+ $im->barrier;
+ }
+ my $skel = $self->{skel};
+ my $parts = $self->{idx_parts};
+ if ($parts && $skel) {
+ my $dbh = $skel->{mm}->{dbh};
+ $dbh->commit; # SQLite data is second in importance
+
+ # Now deal with Xapian
+ $skel->barrier_init(scalar(@$parts));
+ # each partition needs to issue a barrier command to skel:
+ $_->remote_barrier foreach @$parts;
+
+ $skel->barrier_wait; # wait for each Xapian partition
+
+ $dbh->begin_work;
+ }
+ $self->{transact_bytes} = 0;
+}
+
sub searchidx_checkpoint {
my ($self, $more) = @_;
if ($more) {
$dbh->begin_work;
} else {
- $skel->remote_commit; # XXX should be unnecessary...
$skel->remote_close;
delete $self->{skel};
}
my ($self, $new) = @_;
my $pfx = "$self->{-inbox}->{mainrepo}/git";
my $git_dir = "$pfx/$new.git";
- die "$git_dir exists\n" if -e $git_dir;
my @cmd = (qw(git init --bare -q), $git_dir);
PublicInbox::Import::run_die(\@cmd);
- @cmd = (qw/git config/, "--file=$git_dir/config",
- 'repack.writeBitmaps', 'true');
- 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/$new.git/objects";
my %alts;
$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};
return $self->import_init($git, 0);
}
}
- my $latest;
- my $max = -1;
my $new = 0;
- my $pfx = "$self->{-inbox}->{mainrepo}/git";
- if (-d $pfx) {
- foreach my $git_dir (glob("$pfx/*.git")) {
- $git_dir =~ m!/(\d+)\.git\z! or next;
- my $n = $1;
- if ($n > $max) {
- $max = $n;
- $latest = $git_dir;
- }
- }
- }
+ my $max;
+ my $latest = git_dir_latest($self, \$max);
if (defined $latest) {
my $git = PublicInbox::Git->new($latest);
my $packed_bytes = $git->packed_bytes;
my ($self, $git, $packed_bytes) = @_;
my $im = PublicInbox::Import->new($git, undef, undef, $self->{-inbox});
$im->{bytes_added} = int($packed_bytes / $PACKING_FACTOR);
- $im->{want_object_id} = 1;
- $im->{ssoma_lock} = 0;
+ $im->{want_object_info} = 1;
+ $im->{lock_path} = undef;
$im->{path_type} = 'v2';
$self->{im} = $im;
}
+# XXX experimental
+sub diff ($$$) {
+ my ($mid, $cur, $new) = @_;
+ use File::Temp qw(tempfile);
+ use PublicInbox::Spawn qw(spawn);
+
+ my ($ah, $an) = tempfile('email-cur-XXXXXXXX', TMPDIR => 1);
+ print $ah $cur->as_string or die "print: $!";
+ close $ah or die "close: $!";
+ my ($bh, $bn) = tempfile('email-new-XXXXXXXX', TMPDIR => 1);
+ PublicInbox::Import::drop_unwanted_headers($new);
+ print $bh $new->as_string or die "print: $!";
+ close $bh or die "close: $!";
+ my $cmd = [ qw(diff -u), $an, $bn ];
+ print STDERR "# MID conflict <$mid>\n";
+ my $pid = spawn($cmd, undef, { 1 => 2 });
+ defined $pid or die "diff failed to spawn $!";
+ waitpid($pid, 0) == $pid or die "diff did not finish";
+ unlink($an, $bn);
+}
+
sub lookup_content {
- undef # TODO
+ my ($self, $mime, $mid) = @_;
+ my $ibx = $self->{-inbox};
+
+ my $srch = $ibx->search->reopen;
+ my $cid = content_id($mime);
+ my $found;
+ $srch->each_smsg_by_mid($mid, sub {
+ my ($smsg) = @_;
+ $smsg->load_expand;
+ my $msg = $ibx->msg_by_smsg($smsg);
+ if (!defined($msg)) {
+ warn "broken smsg for $mid\n";
+ return 1; # continue
+ }
+ my $cur = PublicInbox::MIME->new($msg);
+ if (content_id($cur) eq $cid) {
+ $smsg->{mime} = $cur;
+ $found = $smsg;
+ return 0; # break out of loop
+ }
+
+ # XXX DEBUG_DIFF is experimental and may be removed
+ diff($mid, $cur, $mime) if $ENV{DEBUG_DIFF};
+
+ 1; # continue
+ });
+ $found;
}
sub atfork_child {
my ($self) = @_;
+ my $fh = delete $self->{reindex_pipe};
+ close $fh if $fh;
if (my $parts = $self->{idx_parts}) {
$_->atfork_child foreach @$parts;
}
}
}
+sub mark_deleted {
+ my ($self, $D, $git, $oid) = @_;
+ my $msgref = $git->cat_file($oid);
+ my $mime = PublicInbox::MIME->new($$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->{skel}->{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";
+
+ 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;
+ }
+}
+
+sub reindex {
+ my ($self, $regen) = @_;
+ my $ibx = $self->{-inbox};
+ my $pfx = "$ibx->{mainrepo}/git";
+ my $max_git;
+ my $latest = git_dir_latest($self, \$max_git);
+ return unless defined $latest;
+ my $head = $ibx->{ref_head} || 'refs/heads/master';
+ $self->idx_init; # acquire lock
+ my $x40 = qr/[a-f0-9]{40}/;
+ my $mm_tmp = $self->{skel}->{mm}->tmp_clone;
+ if (!$regen) {
+ my (undef, $max) = $mm_tmp->minmax;
+ unless (defined $max) {
+ $regen = 1;
+ warn
+"empty msgmap.sqlite3, regenerating article numbers\n";
+ }
+ }
+ my $tip; # latest commit out of all git repos
+ if ($regen) {
+ my $regen_max = 0;
+ for (my $cur = $max_git; $cur >= 0; $cur--) {
+ die "already reindexing!\n" if $self->{reindex_pipe};
+ my $git = PublicInbox::Git->new("$pfx/$cur.git");
+ -d $git->{git_dir} or next; # missing parts are fine
+ chomp($tip = $git->qx('rev-parse', $head)) unless $tip;
+ my $h = $cur == $max_git ? $tip : $head;
+
+ # 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), $h, '--', 'm');
+ ++$regen_max while <$fh>;
+ }
+ die "No messages found in $pfx/*.git, bug?\n" unless $regen_max;
+ $regen = \$regen_max;
+ }
+ my $D = {};
+ my @cmd = qw(log --raw -r --pretty=tformat:%h
+ --no-notes --no-color --no-abbrev --no-renames);
+
+ # if we are regenerating, we must not use a newer tip commit than what
+ # the regeneration counter used:
+ $tip ||= $head;
+
+ # work backwards through history
+ for (my $cur = $max_git; $cur >= 0; $cur--) {
+ die "already reindexing!\n" if delete $self->{reindex_pipe};
+ my $cmt;
+ my $git_dir = "$pfx/$cur.git";
+ -d $git_dir or next; # missing parts are fine
+ my $git = PublicInbox::Git->new($git_dir);
+ my $h = $cur == $max_git ? $tip : $head;
+ my $fh = $self->{reindex_pipe} = $git->popen(@cmd, $h);
+ while (<$fh>) {
+ if (/\A$x40$/o) {
+ 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);
+ }
+ }
+ delete $self->{reindex_pipe};
+ }
+ my $gaps;
+ if ($regen && $$regen != 0) {
+ warn "W: leftover article number ($$regen)\n";
+ $gaps = 1;
+ }
+ my ($min, $max) = $mm_tmp->minmax;
+ if (defined $max) {
+ warn "W: leftover article numbers at $min..$max\n";
+ $gaps = 1;
+ }
+ warn "W: were old git partitions deleted?\n" if $gaps;
+ my @d = sort keys %$D;
+ if (@d) {
+ warn "BUG: ", scalar(@d)," unseen deleted messages marked\n";
+ foreach (@d) {
+ my ($mid, undef) = split(/\0/, $_, 2);
+ warn "<$mid>\n";
+ }
+ }
+}
+
1;