X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FLeiMirror.pm;h=9c457fcab054c6a68bdceaea5dce3c803dd05d8b;hb=dfb7216697548f294259cb010c26416cdbbe0ff0;hp=0603dd4839d4d897b50c5db44d09c8a62357432a;hpb=c94b792e294fa827aa9406923ba0964bb589a831;p=public-inbox.git diff --git a/lib/PublicInbox/LeiMirror.pm b/lib/PublicInbox/LeiMirror.pm index 0603dd48..9c457fca 100644 --- a/lib/PublicInbox/LeiMirror.pm +++ b/lib/PublicInbox/LeiMirror.pm @@ -6,15 +6,21 @@ package PublicInbox::LeiMirror; use strict; use v5.10.1; use parent qw(PublicInbox::IPC); -use PublicInbox::Config; -use PublicInbox::AutoReap; use IO::Uncompress::Gunzip qw(gunzip $GunzipError); use IO::Compress::Gzip qw(gzip $GzipError); -use PublicInbox::Spawn qw(popen_rd spawn); +use PublicInbox::Spawn qw(popen_rd spawn run_die); +use File::Path (); use File::Temp (); +use File::Spec (); use Fcntl qw(SEEK_SET O_CREAT O_EXCL O_WRONLY); use Carp qw(croak); -use POSIX qw(WNOHANG); +use URI; +use PublicInbox::Config; +use PublicInbox::Inbox; +use PublicInbox::LeiCurl; +use PublicInbox::OnDestroy; + +our $LIVE; # pid => callback sub _wq_done_wait { # dwaitpid callback (via wq_eof) my ($arg, $pid) = @_; @@ -22,10 +28,10 @@ sub _wq_done_wait { # dwaitpid callback (via wq_eof) my $f = "$mrr->{dst}/mirror.done"; if ($?) { $lei->child_error($?); - } elsif (!unlink($f)) { + } elsif (!$mrr->{dry_run} && !unlink($f)) { warn("unlink($f): $!\n") unless $!{ENOENT}; } else { - if ($lei->{cmd} ne 'public-inbox-clone') { + if (!$mrr->{dry_run} && $lei->{cmd} ne 'public-inbox-clone') { # calls _finish_add_external $lei->lazy_cb('add-external', '_finish_' )->($lei, $mrr->{dst}); @@ -61,7 +67,9 @@ sub try_scrape { my ($n) = (m!/([0-9]+)\z!); $n => [ URI->new($_), '' ] } @v2_urls; # uniq - return clone_v2($self, \%v2_epochs); + clone_v2($self, \%v2_epochs); + reap_live() while keys(%$LIVE); + return; } # filter out common URLs served by WWW (e.g /$MSGID/T/) @@ -86,7 +94,8 @@ sub clone_cmd { # e.g.: git -c http.proxy=socks5h://127.0.0.1:9050 push(@cmd, '-c', $_) for @{$lei->{opt}->{c} // []}; push @cmd, qw(clone --mirror); - push @cmd, '-q' if $lei->{opt}->{quiet}; + push @cmd, '-q' if $lei->{opt}->{quiet} || + ($lei->{opt}->{jobs} // 1) > 1; push @cmd, '-v' if $lei->{opt}->{verbose}; # XXX any other options to support? # --reference is tricky with multiple epochs... @@ -99,57 +108,59 @@ sub ft_rename ($$$) { my @st = stat($dst); my $mode = @st ? ($st[2] & 07777) : ($open_mode & ~umask); chmod($mode, $ft) or croak "E: chmod $fn: $!"; - rename($fn, $dst) or croak "E: rename($fn => $ft): $!"; + require File::Copy; + File::Copy::mv($fn, $dst) or croak "E: mv($fn => $ft): $!"; $ft->unlink_on_destroy(0); } sub _get_txt_start { # non-fatal - my ($self, $endpoint, $file, $mode) = @_; + my ($self, $endpoint, $fini) = @_; my $uri = URI->new($self->{cur_src} // $self->{src}); my $lei = $self->{lei}; my $path = $uri->path; chop($path) eq '/' or die "BUG: $uri not canonicalized"; $uri->path("$path/$endpoint"); - my $dst = $self->{cur_dst} // $self->{dst}; - my $ft = File::Temp->new(TEMPLATE => "$file-XXXX", DIR => $dst); + my $f = (split(m!/!, $endpoint))[-1]; + my $ft = File::Temp->new(TEMPLATE => "$f-XXXX", TMPDIR => 1); my $opt = { 0 => $lei->{0}, 1 => $lei->{1}, 2 => $lei->{2} }; - my $cmd = $self->{curl}->for_uri($lei, $uri, - qw(--compressed -R -o), $ft->filename); - $self->{-get_txt} = [ $ft, $cmd, $uri, $file, $mode ]; + my $cmd = $self->{curl}->for_uri($lei, $uri, qw(--compressed -R -o), + $ft->filename); + my $jobs = $lei->{opt}->{jobs} // 1; + reap_live() while keys(%$LIVE) >= $jobs; $lei->qerr("# @$cmd"); - spawn($cmd, undef, $opt); + return if $self->{dry_run}; + $self->{"-get_txt.$endpoint"} = [ $ft, $cmd, $uri ]; + $LIVE->{spawn($cmd, undef, $opt)} = + [ \&_get_txt_done, $self, $endpoint, $fini ]; } -sub _get_txt_done { - my ($self) = @_; - my ($ft, $cmd, $uri, $file, $mode) = @{delete $self->{-get_txt}}; +sub _get_txt_done { # returns true on error (non-fatal), undef on success + my ($self, $endpoint) = @_; + my ($fh, $cmd, $uri) = @{delete $self->{"-get_txt.$endpoint"}}; my $cerr = $?; - $? = 0; - return "$uri missing" if ($cerr >> 8) == 22; - return "# @$cmd failed (non-fatal)" if $cerr; - my $dst = $self->{cur_dst} // $self->{dst}; - ft_rename($ft, "$dst/$file", $mode); + $? = 0; # don't influence normal lei exit + return warn("$uri missing\n") if ($cerr >> 8) == 22; + return warn("# @$cmd failed (non-fatal)\n") if $cerr; + seek($fh, SEEK_SET, 0) or die "seek: $!"; + $self->{"mtime.$endpoint"} = (stat($fh))[9]; + local $/; + $self->{"txt.$endpoint"} = <$fh>; undef; # success } -# tries the relatively new /$INBOX/_/text/config/raw endpoint -sub _try_config_start { +sub _write_inbox_config { my ($self) = @_; - my $dst = $self->{cur_dst} // $self->{dst}; - if (!-d $dst || !mkdir($dst)) { - require File::Path; - File::Path::mkpath($dst); - -d $dst or die "mkpath($dst): $!\n"; - } - _get_txt_start($self, qw(_/text/config/raw inbox.config.example), 0444); -} - -sub _try_config_done { - my ($self) = @_; - my $err = _get_txt_done($self); - return warn($err, "\n") if $err; + my $buf = delete($self->{'txt._/text/config/raw'}) // return; my $dst = $self->{cur_dst} // $self->{dst}; my $f = "$dst/inbox.config.example"; + open my $fh, '>', $f or die "open($f): $!"; + print $fh $buf or die "print: $!"; + chmod(0444 & ~umask, $fh) or die "chmod($f): $!"; + my $mtime = delete $self->{'mtime._/text/config/raw'}; + $fh->flush or die "flush($f): $!"; + if (defined $mtime) { + utime($mtime, $mtime, $fh) or die "utime($f): $!"; + } my $cfg = PublicInbox::Config->git_config_dump($f, $self->{lei}->{2}); my $ibx = $self->{ibx} = {}; for my $sec (grep(/\Apublicinbox\./, @{$cfg->{-section_order}})) { @@ -159,45 +170,37 @@ sub _try_config_done { } } -sub _get_txt { # non-fatal temporary compat function - waitpid(_get_txt_start(@_), 0) > 0 or die "waitpid: $!"; - _get_txt_done($_[0]); -} - -# tries the relatively new /$INBOX/_/text/config/raw endpoint -sub _try_config { # temporary compat function - waitpid(_try_config_start($_[0]), 0) > 0 or die "waitpid: $!"; - _try_config_done($_[0]); -} - sub set_description ($) { my ($self) = @_; my $dst = $self->{cur_dst} // $self->{dst}; my $f = "$dst/description"; open my $fh, '+>>', $f or die "open($f): $!"; seek($fh, 0, SEEK_SET) or die "seek($f): $!"; - chomp(my $d = do { local $/; <$fh> } // die "read($f): $!"); - if ($d eq '($INBOX_DIR/description missing)' || - $d =~ /^Unnamed repository/ || $d !~ /\S/) { - seek($fh, 0, SEEK_SET) or die "seek($f): $!"; - truncate($fh, 0) or die "truncate($f): $!"; - my $src = $self->{cur_src} // $self->{src}; - print $fh "mirror of $src\n" or die "print($f): $!"; - close $fh or die "close($f): $!"; + my $d = do { local $/; <$fh> } // die "read($f): $!"; + my $orig = $d; + while (defined($d) && ($d =~ m!^\(\$INBOX_DIR/description missing\)! || + $d =~ /^Unnamed repository/ || $d !~ /\S/)) { + $d = delete($self->{'txt.description'}); } + $d //= 'mirror of '.($self->{cur_src} // $self->{src})."\n"; + return if $d eq $orig; + seek($fh, 0, SEEK_SET) or die "seek($f): $!"; + truncate($fh, 0) or die "truncate($f): $!"; + print $fh $d or die "print($f): $!"; + close $fh or die "close($f): $!"; } sub index_cloned_inbox { my ($self, $iv) = @_; my $lei = $self->{lei}; - my $err = _get_txt($self, qw(description description), 0666); - warn($err, "\n") if $err; # non fatal eval { set_description($self) }; warn $@ if $@; # n.b. public-inbox-clone works w/o (SQLite || Xapian) # lei is useless without Xapian + SQLite if ($lei->{cmd} ne 'public-inbox-clone') { + require PublicInbox::InboxWritable; + require PublicInbox::Admin; my $ibx = delete($self->{ibx}) // { address => [ 'lei@example.com' ], version => $iv, @@ -225,15 +228,23 @@ sub index_cloned_inbox { sub run_reap { my ($lei, $cmd, $opt) = @_; $lei->qerr("# @$cmd"); - my $ar = PublicInbox::AutoReap->new(spawn($cmd, undef, $opt)); - $ar->join; + waitpid(spawn($cmd, undef, $opt), 0) // die "waitpid: $!"; my $ret = $?; $? = 0; # don't let it influence normal exit $ret; } +sub start_clone { + my ($self, $cmd, $opt, $fini) = @_; + my $jobs = $self->{lei}->{opt}->{jobs} // 1; + reap_live() while keys(%$LIVE) >= $jobs; + $self->{lei}->qerr("# @$cmd"); + return if $self->{dry_run}; + $LIVE->{spawn($cmd, undef, $opt)} = [ \&reap_clone, $self, $cmd, $fini ] +} + sub clone_v1 { - my ($self) = @_; + my ($self, $nohang) = @_; my $lei = $self->{lei}; my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return; my $uri = URI->new($self->{cur_src} // $self->{src}); @@ -241,13 +252,20 @@ sub clone_v1 { die "$uri is a v1 inbox, --epoch is not supported\n"; my $pfx = $curl->torsocks($lei, $uri) or return; my $dst = $self->{cur_dst} // $self->{dst}; - my $cmd = [ @$pfx, clone_cmd($lei, my $opt = {}), - $uri->as_string, $dst ]; - my $cerr = run_reap($lei, $cmd, $opt); - return $lei->child_error($cerr, "@$cmd failed") if $cerr; - _try_config($self); - write_makefile($dst, 1); - index_cloned_inbox($self, 1); + my $fini = PublicInbox::OnDestroy->new($$, \&v1_done, $self); + my $cmd = [ @$pfx, clone_cmd($lei, my $opt = {}), "$uri", $dst ]; + my $ref = $self->{-ent} ? $self->{-ent}->{reference} : undef; + defined($ref) && -e "$self->{dst}$ref" and + push @$cmd, '--reference', "$self->{dst}$ref"; + start_clone($self, $cmd, $opt, $fini); + + $lei->{opt}->{'inbox-config'} =~ /\A(?:always|v1)\z/s and + _get_txt_start($self, '_/text/config/raw', $fini); + my $d = $self->{-ent} ? $self->{-ent}->{description} : undef; + defined($d) ? ($self->{'txt.description'} = $d) : + _get_txt_start($self, 'description', $fini); + + reap_live() until ($nohang || !keys(%$LIVE)); # for non-manifest clone } sub parse_epochs ($$) { @@ -293,8 +311,8 @@ EOM $want } -sub init_placeholder ($$) { - my ($src, $edst) = @_; +sub init_placeholder ($$$) { + my ($src, $edst, $ent) = @_; PublicInbox::Import::init_bare($edst); my $f = "$edst/config"; open my $fh, '>>', $f or die "open($f): $!"; @@ -306,27 +324,70 @@ sub init_placeholder ($$) { ; This git epoch was created read-only and "public-inbox-fetch" ; will not fetch updates for it unless write permission is added. +; Hint: chmod +w $edst EOM - close $fh or die "close:($f): $!"; + if (defined($ent->{owner})) { + print $fh <{owner} +EOM + } + close $fh or die "close($f): $!"; + if (defined $ent->{head}) { + $f = "$edst/HEAD"; + open $fh, '>', $f or die "open($f): $!"; + print $fh $ent->{head}, "\n" or die "print($f): $!"; + close $fh or die "close($f): $!"; + } } sub reap_clone { # async, called via SIGCHLD - my ($lei, $cmd, $live) = @_; + my ($self, $cmd) = @_; my $cerr = $?; $? = 0; # don't let it influence normal exit if ($cerr) { - kill('TERM', keys %$live); - $lei->child_error($cerr, "@$cmd failed"); + kill('TERM', keys %$LIVE); + $self->{lei}->child_error($cerr, "@$cmd failed"); + } +} + +sub v1_done { # called via OnDestroy + my ($self) = @_; + return if $self->{dry_run} || !$LIVE; + _write_inbox_config($self); + my $dst = $self->{cur_dst} // $self->{dst}; + if (defined(my $o = $self->{-ent} ? $self->{-ent}->{owner} : undef)) { + run_die([qw(git config -f), "$dst/config", 'gitweb.owner', $o]); + } + my $o = "$dst/objects"; + if (open(my $fh, '<', "$o/info/alternates")) { + chomp(my @l = <$fh>); + for (@l) { $_ = File::Spec->abs2rel($_, $o)."\n" } + my $f = File::Temp->new(TEMPLATE => '.XXXX', DIR => "$o/info"); + print $f @l; + $f->flush or die "flush($f): $!"; + rename($f->filename, "$o/info/alternates") or + die "rename($f, $o/info/alternates): $!"; + $f->unlink_on_destroy(0); } + write_makefile($dst, 1); + index_cloned_inbox($self, 1); } -sub v2_done { +sub v2_done { # called via OnDestroy my ($self) = @_; + return if $self->{dry_run} || !$LIVE; + _write_inbox_config($self); require PublicInbox::MultiGit; my $dst = $self->{cur_dst} // $self->{dst}; my $mg = PublicInbox::MultiGit->new($dst, 'all.git', 'git'); $mg->fill_alternates; for my $i ($mg->git_epochs) { $mg->epoch_cfg_set($i) } + my $edst_owner = delete($self->{-owner}) // []; + while (@$edst_owner) { + my ($edst, $o) = splice(@$edst_owner); + run_die [qw(git config -f), "$edst/config", 'gitweb.owner', $o]; + } for my $edst (@{delete($self->{-read_only}) // []}) { my @st = stat($edst) or die "stat($edst): $!"; chmod($st[2] & 0555, $edst) or die "chmod(a-w, $edst): $!"; @@ -336,6 +397,16 @@ sub v2_done { index_cloned_inbox($self, 2); } +sub reap_live { + my $pid = waitpid(-1, 0) // die "waitpid(-1): $!"; + if (my $x = delete $LIVE->{$pid}) { + my $cb = shift @$x; + $cb->(@$x); + } else { + warn "reaped unknown PID=$pid ($?)\n"; + } +} + sub clone_v2 ($$;$) { my ($self, $v2_epochs, $m) = @_; # $m => manifest.js.gz hashref my $lei = $self->{lei}; @@ -355,48 +426,37 @@ failed to extract epoch number from $src $1 + 0 == $nr or die "BUG: <$uri> miskeyed $1 != $nr"; $edst .= "/git/$nr.git"; + $m->{$key} // die "BUG: `$key' not in manifest.js.gz"; if (!$want || $want->{$nr}) { push @src_edst, $src, $edst; + my $o = $m->{$key}->{owner}; + push(@{$task->{-owner}}, $edst, $o) if defined($o); } else { # create a placeholder so users only need to chmod +w - init_placeholder($src, $edst); + init_placeholder($src, $edst, $m->{$key}); push @{$task->{-read_only}}, $edst; push @skip, $key; } } # filter out the epochs we skipped $self->{-culled_manifest} = 1 if delete(@$m{@skip}); + + (!$self->{dry_run} && !-d $dst) and File::Path::mkpath($dst); + + require PublicInbox::Lock; my $lk = bless { lock_path => "$dst/inbox.lock" }, 'PublicInbox::Lock'; - my %live; my $fini = PublicInbox::OnDestroy->new($$, \&v2_done, $task); - $live{_try_config_start($task)} = [ \&_try_config_done, $task, $fini ]; - $task->{-locked} = $lk->lock_for_scope($$); + + $lei->{opt}->{'inbox-config'} =~ /\A(?:always|v2)\z/s and + _get_txt_start($task, '_/text/config/raw', $fini); + + _get_txt_start($task, 'description', $fini); + + $task->{-locked} = $lk->lock_for_scope($$) if !$self->{dry_run}; my @cmd = clone_cmd($lei, my $opt = {}); - my $jobs = $self->{lei}->{opt}->{jobs} // 2; - my $sigchld = sub { - my ($sig) = @_; - my $flags = $sig ? WNOHANG : 0; - while (1) { - my $pid = waitpid(-1, $flags) or return; - return if $pid < 0; - if (my $x = delete $live{$pid}) { - my $cb = shift @$x; - $cb->(@$x, \%live); - } else { - warn "reaped unknown PID=$pid ($?)\n"; - } - } - }; - do { - $sigchld->(0) while keys(%live) >= $jobs; - while (keys(%live) < $jobs && @src_edst && - !$lei->{child_error}) { - my $cmd = [ @$pfx, @cmd, splice(@src_edst, 0, 2) ]; - $lei->qerr("# @$cmd"); - my $pid = spawn($cmd, undef, $opt); - $live{$pid} = [ \&reap_clone, $lei, $cmd, $fini ]; - } - } while (@src_edst && !$lei->{child_error}); - $sigchld->(0) while keys(%live); + while (@src_edst && !$lei->{child_error}) { + my $cmd = [ @$pfx, @cmd, splice(@src_edst, 0, 2) ]; + start_clone($self, $cmd, $opt, $fini); + } } sub decode_manifest ($$$) { @@ -468,6 +528,30 @@ sub multi_inbox ($$$) { ($path_pfx, $n, $ret); } +sub clone_all { + my ($self, $todo, $m) = @_; + # handle no-dependency repos, first + for (@{delete($todo->{''}) // []}) { + clone_v1($_, 1); + return if $self->{lei}->{child_error}; + } + # resolve references, deepest, first: + while (scalar keys %$todo) { + for my $x (keys %$todo) { + # resolve multi-level references + while (defined($m->{$x}->{reference})) { + $x = $m->{$x}->{reference}; + } + my $y = delete $todo->{$x} // next; # already done + for (@$y) { + clone_v1($_, 1); + return if $self->{lei}->{child_error}; + } + last; # restart %$todo iteration + } + } +} + # FIXME: this gets confused by single inbox instance w/ global manifest.js.gz sub try_manifest { my ($self) = @_; @@ -477,16 +561,13 @@ sub try_manifest { my $path = $uri->path; chop($path) eq '/' or die "BUG: $uri not canonicalized"; $uri->path($path . '/manifest.js.gz'); - my $pdir = $lei->rel2abs($self->{dst}); - $pdir =~ s!/[^/]+/?\z!!; - my $ft = File::Temp->new(TEMPLATE => 'm-XXXX', - UNLINK => 1, DIR => $pdir, SUFFIX => '.tmp'); + my $ft = File::Temp->new(TEMPLATE => '.manifest-XXXX', + UNLINK => 1, TMPDIR => 1, SUFFIX => '.tmp'); my $fn = $ft->filename; - my ($bn) = ($fn =~ m!/([^/]+)\z!); - my $cmd = $curl->for_uri($lei, $uri, '-R', '-o', $bn); - my $opt = { -C => $pdir }; - $opt->{$_} = $lei->{$_} for (0..2); - my $cerr = run_reap($lei, $cmd, $opt); + my $cmd = $curl->for_uri($lei, $uri, '-R', '-o', $fn); + my %opt = map { $_ => $lei->{$_} } (0..2); + my $cerr = run_reap($lei, $cmd, \%opt); + local $LIVE; if ($cerr) { return try_scrape($self) if ($cerr >> 8) == 22; # 404 missing return $lei->child_error($cerr, "@$cmd failed"); @@ -520,26 +601,38 @@ sub try_manifest { E: `$self->{cur_dst}' must not contain newline EOM clone_v2($self, \%v2_epochs, $m); + return if $self->{lei}->{child_error}; } } if (my $v1 = delete $multi->{v1}) { my $p = $path_pfx.$path; chop($p) if substr($p, -1, 1) eq '/'; $uri->path($p); + my $todo = {}; + my %want = map { $_ => 1 } @$v1; for my $name (@$v1) { - local $self->{cur_src} = "$uri"; - local $self->{cur_dst} = $self->{dst}; + my $task = bless { %$self }, __PACKAGE__; + $task->{-ent} = $m->{$name} // + die("BUG: no `$name' in manifest"); + $task->{cur_src} = "$uri"; + $task->{cur_dst} = $task->{dst}; if ($n > 1) { - $self->{cur_dst} .= $name; - $self->{cur_src} .= $name; + $task->{cur_dst} .= $name; + $task->{cur_src} .= $name; } - index($self->{cur_dst}, "\n") >= 0 and die <{cur_dst}' must not contain newline + index($task->{cur_dst}, "\n") >= 0 and die <{cur_dst}' must not contain newline EOM - $self->{cur_src} .= '/'; - clone_v1($self, 1); + $task->{cur_src} .= '/'; + my $dep = $task->{-ent}->{reference} // ''; + $dep = '' if !$want{$dep}; + push @{$todo->{$dep}}, $task; } + clone_all($self, $todo, $m); } + reap_live() while keys(%$LIVE); + return if $self->{lei}->{child_error} || $self->{dry_run}; + if (delete $self->{-culled_manifest}) { # set by clone_v2/-I/--exclude # write the smaller manifest if epochs were skipped so # users won't have to delete manifest if they +w an @@ -559,13 +652,18 @@ sub start_clone_url { die "TODO: non-HTTP/HTTPS clone of $self->{src} not supported, yet"; } -sub do_mirror { # via wq_io_do +sub do_mirror { # via wq_io_do or public-inbox-clone my ($self) = @_; my $lei = $self->{lei}; umask($lei->{client_umask}) if defined $lei->{client_umask}; eval { + my $ic = $lei->{opt}->{'inbox-config'} //= 'always'; + $ic =~ /\A(?:v1|v2|always|never)\z/s or die <<""; +--inbox-config must be one of `always', `v2', `v1', or `never' + my $iv = $lei->{opt}->{'inbox-version'}; if (defined $iv) { + local $LIVE; return clone_v1($self) if $iv == 1; return try_scrape($self) if $iv == 2; die "bad --inbox-version=$iv\n"; @@ -579,14 +677,6 @@ sub do_mirror { # via wq_io_do sub start { my ($cls, $lei, $src, $dst) = @_; my $self = bless { src => $src, dst => $dst }, $cls; - if ($src =~ m!https?://!) { - require URI; - require PublicInbox::LeiCurl; - } - require PublicInbox::Lock; - require PublicInbox::Inbox; - require PublicInbox::Admin; - require PublicInbox::InboxWritable; $lei->request_umask; my ($op_c, $ops) = $lei->workers_start($self, 1); $lei->{wq1} = $self;