use warnings;
use PublicInbox::Spawn qw(which spawn);
use PublicInbox::Over;
+use PublicInbox::Search;
use File::Temp qw(tempdir);
use File::Path qw(remove_tree);
-sub commit_changes ($$$) {
- my ($im, $old, $new) = @_;
+# support testing with dev versions of Xapian which installs
+# commands with a version number suffix (e.g. "xapian-compact-1.5")
+our $XAPIAN_COMPACT = $ENV{XAPIAN_COMPACT} || 'xapian-compact';
+
+sub commit_changes ($$$$) {
+ my ($ibx, $old, $new, $opt) = @_;
+
+ my $reindex = $opt->{reindex};
+ my $im = $ibx->importer(0);
+ $im->lock_acquire if $reindex;
+
my @st = stat($old) or die "failed to stat($old): $!\n";
my $over = "$old/over.sqlite3";
if (-f $over) {
$over = PublicInbox::Over->new($over);
$over->connect->sqlite_backup_to_file("$new/over.sqlite3");
+ $over = undef;
}
rename($old, "$new/old") or die "rename $old => $new/old: $!\n";
chmod($st[2] & 07777, $new) or die "chmod $old: $!\n";
rename($new, $old) or die "rename $new => $old: $!\n";
- $im->lock_release;
remove_tree("$old/old") or die "failed to remove $old/old: $!\n";
+
+ if ($reindex) {
+ $opt->{-skip_lock} = 1;
+ PublicInbox::Admin::index_inbox($ibx, $opt);
+ # implicit lock_release
+ } else {
+ $im->lock_release;
+ }
+}
+
+sub xspawn {
+ my ($cmd, $env, $opt) = @_;
+ if (ref($cmd->[0]) eq 'CODE') {
+ my $cb = shift(@$cmd); # $cb = cpdb()
+ defined(my $pid = fork) or die "fork: $!";
+ return $pid if $pid > 0;
+ eval { $cb->($cmd, $env, $opt) };
+ die $@ if $@;
+ exit 0;
+ } else {
+ spawn($cmd, $env, $opt);
+ }
+}
+
+sub runnable_or_die ($) {
+ my ($exe) = @_;
+ which($exe) or die "$exe not found in PATH\n";
+}
+
+sub prepare_reindex ($$) {
+ my ($ibx, $reindex) = @_;
+ if ($ibx->{version} == 1) {
+ my $dir = $ibx->search->xdir(1);
+ my $xdb = Search::Xapian::Database->new($dir);
+ if (my $lc = $xdb->get_metadata('last_commit')) {
+ $reindex->{from} = $lc;
+ }
+ } else { # v2
+ my $v2w = $ibx->importer(0);
+ my $max;
+ $v2w->git_dir_latest(\$max) or return;
+ my $from = $reindex->{from};
+ my $mm = $ibx->mm;
+ my $v = PublicInbox::Search::SCHEMA_VERSION();
+ foreach my $i (0..$max) {
+ $from->[$i] = $mm->last_commit_xap($v, $i);
+ }
+ }
+}
+
+sub progress_prepare ($) {
+ my ($opt) = @_;
+ if ($opt->{quiet}) {
+ open my $null, '>', '/dev/null' or
+ die "failed to open /dev/null: $!\n";
+ $opt->{1} = fileno($null);
+ $opt->{-dev_null} = $null;
+ } else {
+ $opt->{-progress} = 1;
+ }
}
sub run {
my ($ibx, $cmd, $env, $opt) = @_;
- $opt ||= {};
+ progress_prepare($opt ||= {});
my $dir = $ibx->{mainrepo} or die "no mainrepo in inbox\n";
- which($cmd->[0]) or die "$cmd->[0] not found in PATH\n";
+ my $exe = $cmd->[0];
+ my $pfx = $exe;
+ runnable_or_die($XAPIAN_COMPACT) if $opt->{compact};
+
+ my $reindex; # v1:{ from => $x40 }, v2:{ from => [ $x40, $x40, .. ] } }
+ my $from; # per-epoch ranges
+
+ if (ref($exe) eq 'CODE') {
+ $pfx = 'CODE';
+ $reindex = $opt->{reindex} = {};
+ $from = $reindex->{from} = [];
+ require Search::Xapian::WritableDatabase;
+ } else {
+ runnable_or_die($exe);
+ }
$ibx->umask_prepare;
my $old = $ibx->search->xdir(1);
-d $old or die "$old does not exist\n";
- my $new = tempdir($cmd->[0].'-XXXXXXXX', DIR => $dir);
- my $v = $ibx->{version} || 1;
+ my $new = tempdir("$pfx-XXXXXXXX", DIR => $dir);
+ my $v = $ibx->{version} ||= 1;
my @cmds;
if ($v == 1) {
push @cmds, [@$cmd, $old, $new];
my $max = $opt->{jobs} || scalar(@cmds);
$ibx->with_umask(sub {
$im->lock_acquire;
+
+ # fine-grained locking if we prepare for reindex
+ if ($reindex) {
+ prepare_reindex($ibx, $reindex);
+ $im->lock_release;
+ }
+ delete($ibx->{$_}) for (qw(mm over search)); # cleanup
my %pids;
while (@cmds) {
while (scalar(keys(%pids)) < $max && scalar(@cmds)) {
my $x = shift @cmds;
- $pids{spawn($x, $env, $opt)} = $x;
+ $pids{xspawn($x, $env, $opt)} = $x;
}
while (scalar keys %pids) {
die join(' ', @$x)." failed: $?\n" if $?;
}
}
- commit_changes($im, $old, $new);
+ commit_changes($ibx, $old, $new, $opt);
});
}
+sub cpdb_retryable ($$) {
+ my ($src, $pfx) = @_;
+ if (ref($@) eq 'Search::Xapian::DatabaseModifiedError') {
+ warn "$pfx Xapian DB modified, reopening and retrying\n";
+ $src->reopen;
+ return 1;
+ }
+ if ($@) {
+ warn "$pfx E: ", ref($@), "\n";
+ die;
+ }
+ 0;
+}
+
+# Like copydatabase(1), this is horribly slow; and it doesn't seem due
+# to the overhead of Perl.
+sub cpdb {
+ my ($args, $env, $opt) = @_;
+ my ($old, $new) = @$args;
+ my $src = Search::Xapian::Database->new($old);
+ my $tmp = $opt->{compact} ? "$new.compact" : $new;
+
+ # like copydatabase(1), be sure we don't overwrite anything in case
+ # of other bugs:
+ my $creat = Search::Xapian::DB_CREATE();
+ my $dst = Search::Xapian::WritableDatabase->new($tmp, $creat);
+ my ($it, $end);
+ my $pfx = '';
+ my ($nr, $tot, $fmt); # progress output
+
+ do {
+ eval {
+ # update the only metadata key for v1:
+ my $lc = $src->get_metadata('last_commit');
+ $dst->set_metadata('last_commit', $lc) if $lc;
+
+ $it = $src->postlist_begin('');
+ $end = $src->postlist_end('');
+ $pfx = (split('/', $old))[-1].':';
+ if ($opt->{-progress}) {
+ $nr = 0;
+ $tot = $src->get_doccount;
+ $fmt = "$pfx % ".length($tot)."u/$tot\n";
+ warn "$pfx copying $tot documents\n";
+ }
+ };
+ } while (cpdb_retryable($src, $pfx));
+
+ do {
+ eval {
+ while ($it != $end) {
+ my $docid = $it->get_docid;
+ my $doc = $src->get_document($docid);
+ $dst->replace_document($docid, $doc);
+ $it->inc;
+ if ($fmt && !(++$nr & 1023)) {
+ warn(sprintf($fmt, $nr));
+ }
+ }
+
+ # unlike copydatabase(1), we don't copy spelling
+ # and synonym data (or other user metadata) since
+ # the Perl APIs don't expose iterators for them
+ # (and public-inbox does not use those features)
+ };
+ } while (cpdb_retryable($src, $pfx));
+
+ warn(sprintf($fmt, $nr)) if $fmt;
+ return unless $opt->{compact};
+
+ $src = $dst = undef; # flushes and closes
+ $pfx = undef unless $fmt;
+
+ warn "$pfx compacting...\n" if $pfx;
+ # this is probably the best place to do xapian-compact
+ # since $dst isn't readable by HTTP or NNTP clients, yet:
+ my $cmd = [ $XAPIAN_COMPACT, '--no-renumber', $tmp, $new ];
+ my $rdr = {};
+ foreach my $fd (0..2) {
+ defined(my $dst = $opt->{$fd}) or next;
+ $rdr->{$fd} = $dst;
+ }
+
+ my ($r, $w);
+ if ($pfx && pipe($r, $w)) {
+ $rdr->{1} = fileno($w);
+ }
+ my $pid = spawn($cmd, $env, $rdr);
+ if ($pfx) {
+ close $w or die "close: \$w: $!";
+ foreach (<$r>) {
+ s/\r/\r$pfx /g;
+ warn "$pfx $_";
+ }
+ }
+ my $rp = waitpid($pid, 0);
+ if ($? || $rp != $pid) {
+ die join(' ', @$cmd)." failed: $? (pid=$pid, reaped=$rp)\n";
+ }
+ remove_tree($tmp) or die "failed to remove $tmp: $!\n";
+}
+
1;