1 # Copyright (C) 2015, all contributors <meta@public-inbox.org>
2 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
3 # based on notmuch, but with no concept of folders, files or flags
4 package PublicInbox::SearchIdx;
7 use base qw(PublicInbox::Search);
8 use PublicInbox::MID qw/mid_clean mid_compressed/;
9 *xpfx = *PublicInbox::Search::xpfx;
12 my ($class, $git_dir, $writable) = @_;
13 my $dir = $class->xdir($git_dir);
14 require Search::Xapian::WritableDatabase;
15 my $flag = Search::Xapian::DB_OPEN;
18 File::Path::mkpath($dir);
19 $flag = Search::Xapian::DB_CREATE_OR_OPEN;
21 my $db = Search::Xapian::WritableDatabase->new($dir, $flag);
22 bless { xdb => $db, git_dir => $git_dir }, $class;
26 my ($self, $mime) = @_; # mime = Email::MIME object
27 my $db = $self->{xdb};
30 my $mid_orig = mid_clean($mime->header_obj->header('Message-ID'));
31 my $mid = mid_compressed($mid_orig);
33 my $ct_msg = $mime->header('Content-Type') || 'text/plain';
36 my $smsg = $self->lookup_message($mid);
40 $smsg->ensure_metadata;
41 # convert a ghost to a regular message
42 # it will also clobber any existing regular message
46 my $type = xpfx('type');
48 $doc->remove_term($type . 'ghost');
52 # probably does not exist:
53 eval { $doc->remove_term($type . 'mail') };
54 $doc->add_term($type . 'mail');
56 $smsg = PublicInbox::SearchMsg->new($mime);
58 $doc->add_term(xpfx('mid') . $mid);
61 my $subj = $smsg->subject;
64 $doc->add_term(xpfx('subject') . $subj);
66 my $path = $self->subject_path($subj);
67 $doc->add_term(xpfx('path') . mid_compressed($path));
70 my $from = $smsg->from_name;
71 my $date = $smsg->date;
72 my $ts = Search::Xapian::sortable_serialise($smsg->ts);
73 $doc->add_value(PublicInbox::Search::TS, $ts);
75 my $tg = $self->term_generator;
77 $tg->set_document($doc);
78 $tg->index_text($subj, 1, 'S') if $subj;
79 $tg->increase_termpos;
80 $tg->index_text($subj) if $subj;
81 $tg->increase_termpos;
83 $tg->index_text($smsg->from->format);
84 $tg->increase_termpos;
86 $mime->walk_parts(sub {
88 return if $part->subparts; # walk_parts already recurses
89 my $ct = $part->content_type || $ct_msg;
91 # account for filter bugs...
92 $ct =~ m!\btext/plain\b!i or return;
95 my $body = $part->body;
97 my @lines = split(/\n/, $body);
98 while (defined(my $l = shift @lines)) {
106 $tg->index_text(join("\n", @quot), 0);
108 $tg->increase_termpos;
111 $tg->index_text(join("\n", @orig));
113 $tg->increase_termpos;
118 $doc_id = $smsg->doc_id;
119 $self->link_message($smsg, 0);
120 $doc->set_data($smsg->to_doc_data);
121 $db->replace_document($doc_id, $doc);
123 $self->link_message($smsg, 0);
124 $doc->set_data($smsg->to_doc_data);
125 $doc_id = $db->add_document($doc);
130 warn "failed to index message <$mid_orig>: $@\n";
136 # returns deleted doc_id on success, undef on missing
138 my ($self, $mid_orig) = @_;
139 my $db = $self->{xdb};
141 $mid_orig = mid_clean($mid_orig);
142 my $mid = mid_compressed($mid_orig);
145 $doc_id = $self->find_unique_doc_id('mid', $mid);
146 $db->delete_document($doc_id) if defined $doc_id;
150 warn "failed to remove message <$mid_orig>: $@\n";
156 sub term_generator { # write-only
159 my $tg = $self->{term_generator};
162 $tg = Search::Xapian::TermGenerator->new;
163 $tg->set_stemmer($self->stemmer);
165 $self->{term_generator} = $tg;
168 sub next_doc_id { $_[0]->{xdb}->get_lastdocid + 1 }
170 # increments last_thread_id counter
171 # returns a 64-bit integer represented as a hex string
174 my $db = $self->{xdb};
175 my $last_thread_id = int($db->get_metadata('last_thread_id') || 0);
177 $db->set_metadata('last_thread_id', ++$last_thread_id);
183 my ($self, $smsg, $is_ghost) = @_;
186 $smsg->ensure_metadata;
188 $self->link_message_to_parents($smsg);
192 sub link_message_to_parents {
193 my ($self, $smsg) = @_;
194 my $doc = $smsg->{doc};
195 my $mid = mid_compressed($smsg->mid);
196 my $mime = $smsg->mime;
197 my $refs = $mime->header_obj->header('References');
198 my @refs = $refs ? ($refs =~ /<([^>]+)>/g) : ();
199 my $irt = $mime->header_obj->header('In-Reply-To');
201 $irt = mid_compressed(mid_clean($irt));
203 # maybe some crazies will try to make a circular reference:
207 # last References should be $irt
208 # we will de-dupe later
215 my @crefs = map { mid_compressed($_) } @refs;
216 my %uniq = ($mid => 1);
218 # prevent circular references via References: here:
220 foreach my $ref (@crefs) {
227 $doc->add_term(xpfx('inreplyto') . $irt) if defined $irt;
228 $smsg->{references_sorted} = '<'.join('><', @refs).'>';
230 my $ref_pfx = xpfx('references');
232 # first ref *should* be the thread root,
233 # but we can never trust clients to do the right thing
234 my $ref = shift @refs;
235 $doc->add_term($ref_pfx . $ref);
236 $tid = $self->_resolve_mid_to_tid($ref);
238 # the rest of the refs should point to this tid:
239 foreach $ref (@refs) {
240 $doc->add_term($ref_pfx . $ref);
241 my $ptid = $self->_resolve_mid_to_tid($ref);
243 $self->merge_threads($tid, $ptid);
247 $tid = $self->next_thread_id;
249 $doc->add_term(xpfx('thread') . $tid);
253 my ($self, $git, $blob) = @_;
254 my $mime = do_cat_mail($git, $blob) or return;
255 eval { $self->add_message($mime) };
256 warn "W: index_blob $blob: $@\n" if $@;
260 my ($self, $git, $blob) = @_;
261 my $mime = do_cat_mail($git, $blob) or return;
262 my $mid = $mime->header_obj->header('Message-ID');
263 eval { $self->remove_message($mid) } if defined $mid;
264 warn "W: unindex_blob $blob: $@\n" if $@;
268 my ($git, $blob) = @_;
270 my $str = $git->cat_file($blob);
271 Email::MIME->new($str);
276 # indexes all unindexed messages
278 my ($self, $head) = @_;
279 require PublicInbox::GitCatFile;
280 my $db = $self->{xdb};
281 my $hex = '[a-f0-9]';
282 my $h40 = $hex .'{40}';
283 my $addmsg = qr!^:000000 100644 \S+ ($h40) A\t${hex}{2}/${hex}{38}$!;
284 my $delmsg = qr!^:100644 000000 ($h40) \S+ D\t${hex}{2}/${hex}{38}$!;
287 $db->begin_transaction;
289 my $git = PublicInbox::GitCatFile->new($self->{git_dir});
291 my $latest = $db->get_metadata('last_commit');
292 my $range = length $latest ? "$latest..$head" : $head;
295 # get indexed messages
296 my @cmd = ('git', "--git-dir=$self->{git_dir}", "log",
297 qw/--reverse --no-notes --no-color --raw -r
298 --no-abbrev/, $range);
299 my $pid = open(my $log, '-|', @cmd) or
300 die('open` '.join(' ', @cmd) . " pipe failed: $!\n");
302 while (my $line = <$log>) {
303 if ($line =~ /$addmsg/o) {
304 $self->index_blob($git, $1);
305 } elsif ($line =~ /$delmsg/o) {
306 $self->unindex_blob($git, $1);
307 } elsif ($line =~ /^commit ($h40)/o) {
312 $db->set_metadata('last_commit', $latest) if defined $latest;
315 warn "indexing failed: $@\n";
316 $db->cancel_transaction;
318 $db->commit_transaction;
322 # this will create a ghost as necessary
323 sub _resolve_mid_to_tid {
324 my ($self, $mid) = @_;
326 my $smsg = $self->lookup_message($mid) || $self->create_ghost($mid);
331 my ($self, $mid, $tid) = @_;
333 $mid = mid_compressed($mid);
334 $tid = $self->next_thread_id unless defined $tid;
336 my $doc = Search::Xapian::Document->new;
337 $doc->add_term(xpfx('mid') . $mid);
338 $doc->add_term(xpfx('thread') . $tid);
339 $doc->add_term(xpfx('type') . 'ghost');
341 my $smsg = PublicInbox::SearchMsg->wrap($doc, $mid);
342 $self->link_message($smsg, 1);
343 $self->{xdb}->add_document($doc);
349 my ($self, $winner_tid, $loser_tid) = @_;
350 my ($head, $tail) = $self->find_doc_ids('thread', $loser_tid);
351 my $thread_pfx = xpfx('thread');
352 my $db = $self->{xdb};
354 for (; $head != $tail; $head->inc) {
355 my $docid = $head->get_docid;
356 my $doc = $db->get_document($docid);
357 $doc->remove_term($thread_pfx . $loser_tid);
358 $doc->add_term($thread_pfx . $winner_tid);
359 $db->replace_document($docid, $doc);