X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FLeiMirror.pm;h=4c564c84f5b1db2055e66d1636a387fa299cdfb5;hb=b58cb3f73d48f682eb2092f7ae758cdad70c5467;hp=2da4f8815588953289bbb7a81df73b72789afd91;hpb=b68552fad5cfe76851b23abb614638b2396d80da;p=public-inbox.git diff --git a/lib/PublicInbox/LeiMirror.pm b/lib/PublicInbox/LeiMirror.pm index 2da4f881..4c564c84 100644 --- a/lib/PublicInbox/LeiMirror.pm +++ b/lib/PublicInbox/LeiMirror.pm @@ -16,21 +16,27 @@ use Carp qw(croak); use URI; use PublicInbox::Config; use PublicInbox::Inbox; +use PublicInbox::Git; use PublicInbox::LeiCurl; use PublicInbox::OnDestroy; -use Digest::SHA qw(sha256_hex); +use PublicInbox::SHA qw(sha256_hex sha1_hex); +use POSIX qw(strftime); our $LIVE; # pid => callback +our $FGRP_TODO; # objstore -> [ fgrp mirror objects ] +our $TODO; # reference => [ non-fgrp mirror objects ] +our @PUH; # post-update hooks -sub _wq_done_wait { # dwaitpid callback (via wq_eof) - my ($arg, $pid) = @_; - my ($mrr, $lei) = @$arg; - my $f = "$mrr->{dst}/mirror.done"; +sub keep_going ($) { + $LIVE && (!$_[0]->{lei}->{child_error} || + $_[0]->{lei}->{opt}->{'keep-going'}); +} + +sub _wq_done_wait { # awaitpid cb (via wq_eof) + my ($pid, $mrr, $lei) = @_; if ($?) { $lei->child_error($?); - } elsif (!$mrr->{dry_run} && !unlink($f)) { - warn("unlink($f): $!\n") unless $!{ENOENT}; - } else { + } elsif (!$lei->{child_error}) { if (!$mrr->{dry_run} && $lei->{cmd} ne 'public-inbox-clone') { require PublicInbox::LeiAddExternal; PublicInbox::LeiAddExternal::_finish_add_external( @@ -47,7 +53,7 @@ sub try_scrape { my $uri = URI->new($self->{src}); my $lei = $self->{lei}; my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return; - my $cmd = $curl->for_uri($lei, $uri, qw(-f --compressed)); + my $cmd = $curl->for_uri($lei, $uri, '--compressed'); my $opt = { 0 => $lei->{0}, 2 => $lei->{2} }; my $fh = popen_rd($cmd, undef, $opt); my $html = do { local $/; <$fh> } // die "read(curl $uri): $!"; @@ -147,7 +153,7 @@ sub _get_txt_start { # non-fatal 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(-f --compressed -R -o), + my $cmd = $self->{curl}->for_uri($lei, $uri, qw(--compressed -R -o), $ft->filename); do_reap($self); $lei->qerr("# @$cmd"); @@ -176,13 +182,16 @@ sub _write_inbox_config { 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): $!"; + if (sysopen(my $fh, $f, O_CREAT|O_EXCL|O_WRONLY)) { + print $fh $buf or die "print: $!"; + chmod(0444 & ~umask, $fh) or die "chmod($f): $!"; + $fh->flush or die "flush($f): $!"; + if (defined $mtime) { + utime($mtime, $mtime, $fh) or die "utime($f): $!"; + } + } elsif (!$!{EEXIST}) { + die "open($f): $!"; } my $cfg = PublicInbox::Config->git_config_dump($f, $self->{lei}->{2}); my $ibx = $self->{ibx} = {}; @@ -196,22 +205,14 @@ sub _write_inbox_config { sub set_description ($) { 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): $!"; - my $d = do { local $/; <$fh> } // die "read($f): $!"; - chomp(my $orig = $d); + chomp(my $orig = PublicInbox::Git::try_cat("$dst/description")); + my $d = $orig; while (defined($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}); - chomp $d; - return if $d eq $orig; - seek($fh, 0, SEEK_SET) or die "seek($f): $!"; - truncate($fh, 0) or die "truncate($f): $!"; - print $fh $d, "\n" or die "print($f): $!"; - close $fh or die "close($f): $!"; + atomic_write($dst, 'description', $d."\n") if $d ne $orig; } sub index_cloned_inbox { @@ -235,7 +236,7 @@ sub index_cloned_inbox { my ($k) = ($sw =~ /\A([\w-]+)/); $opt->{$k} = $lei->{opt}->{$k}; } - # force synchronous dwaitpid for v2: + # force synchronous awaitpid for v2: local $PublicInbox::DS::in_loop = 0; my $cfg = PublicInbox::Config->new(undef, $lei->{2}); my $env = PublicInbox::Admin::index_prepare($opt, $cfg); @@ -244,7 +245,6 @@ sub index_cloned_inbox { PublicInbox::Admin::index_inbox($ibx, undef, $opt); } return if defined $self->{cur_dst}; # one of many repos to clone - open my $x, '>', "$self->{dst}/mirror.done"; # for _wq_done_wait } sub run_reap { @@ -256,7 +256,7 @@ sub run_reap { $ret; } -sub start_clone { +sub start_cmd { my ($self, $cmd, $opt, $fini) = @_; do_reap($self); $self->{lei}->qerr("# @$cmd"); @@ -275,17 +275,21 @@ sub fetch_args ($$) { push @cmd, '-q' if $lei->{opt}->{quiet} || ($lei->{opt}->{jobs} // 1) > 1; push @cmd, '-v' if $lei->{opt}->{verbose}; + push(@cmd, '-p') if $lei->{opt}->{prune}; + PublicInbox::Git::version() >= ((2 << 24) | (29 << 16)) and + push(@cmd, '--no-write-fetch-head'); @cmd; } sub upr { # feed `git update-ref --stdin -z' verbosely - my ($lei, $w, $op, $ref, $oid) = @_; - $lei->qerr("# $op $ref $oid") if $lei->{opt}->{verbose}; - print $w "$op $ref\0$oid\0" or die "print(w): $!"; + my ($lei, $w, $op, @rest) = @_; # ($ref, $oid) = @rest + $lei->qerr("# $op @rest") if $lei->{opt}->{verbose}; + print $w "$op ", join("\0", @rest, '') or die "print(w): $!"; } sub fgrp_update { my ($fgrp) = @_; + return if !keep_going($fgrp); my $srcfh = delete $fgrp->{srcfh} or return; my $dstfh = delete $fgrp->{dstfh} or return; seek($srcfh, SEEK_SET, 0) or die "seek(src): $!"; @@ -298,15 +302,16 @@ sub fgrp_update { my $cmd = [ 'git', "--git-dir=$fgrp->{cur_dst}", qw(update-ref --stdin -z) ]; my $lei = $fgrp->{lei}; - $lei->qerr("# @$cmd"); - my $opt = { 0 => $r, 1 => $lei->{1}, 2 => $lei->{2} }; - my $pid = spawn($cmd, undef, $opt); + my $pack = PublicInbox::OnDestroy->new($$, \&satellite_done, $fgrp); + start_cmd($fgrp, $cmd, { 0 => $r, 2 => $lei->{2} }, $pack); close $r or die "close(r): $!"; + return if $fgrp->{dry_run}; for my $ref (keys %dst) { my $new = delete $src{$ref}; my $old = $dst{$ref}; if (defined $new) { - upr($lei, $w, 'update', $ref, $new) if $new ne $old; + $new eq $old or + upr($lei, $w, 'update', $ref, $new, $old); } else { upr($lei, $w, 'delete', $ref, $old); } @@ -315,60 +320,51 @@ sub fgrp_update { upr($lei, $w, 'create', $ref, $oid); } close($w) or warn "E: close(update-ref --stdin): $! (need git 1.8.5+)\n"; - $LIVE->{$pid} = [ \&reap_cmd, $fgrp, $cmd ]; +} + +sub satellite_done { + my ($fgrp) = @_; pack_refs($fgrp, $fgrp->{cur_dst}); + run_puh($fgrp); } sub pack_refs { my ($self, $git_dir) = @_; - do_reap($self); my $cmd = [ 'git', "--git-dir=$git_dir", qw(pack-refs --all --prune) ]; - $self->{lei}->qerr("# @$cmd"); - return if $self->{dry_run}; - my $opt = { 1 => $self->{lei}->{1}, 2 => $self->{lei}->{2} }; - $LIVE->{spawn($cmd, undef, $opt)} = [ \&reap_cmd, $self, $cmd ]; + start_cmd($self, $cmd, { 2 => $self->{lei}->{2} }); } sub fgrpv_done { my ($fgrpv) = @_; return if !$LIVE; - my $pid; my $first = $fgrpv->[0] // die 'BUG: no fgrpv->[0]'; + return if !keep_going($first); pack_refs($first, $first->{-osdir}); # objstore refs always packed for my $fgrp (@$fgrpv) { my $rn = $fgrp->{-remote}; - my %opt = map { $_ => $fgrp->{lei}->{$_} } (0..2); + my %opt = ( 2 => $fgrp->{lei}->{2} ); - my $update_ref = $fgrp->{dry_run} ? undef : - PublicInbox::OnDestroy->new($$, \&fgrp_update, $fgrp); + my $update_ref = PublicInbox::OnDestroy->new($$, + \&fgrp_update, $fgrp); my $src = [ 'git', "--git-dir=$fgrp->{-osdir}", 'for-each-ref', "--format=refs/%(refname:lstrip=3)%00%(objectname)", "refs/remotes/$rn/" ]; - do_reap($fgrp); - $fgrp->{lei}->qerr("# @$src >SRC"); - if ($update_ref) { - open(my $fh, '+>', undef) or die "open(src): $!"; - $pid = spawn($src, undef, { %opt, 1 => $fh }); - $fgrp->{srcfh} = $fh; - $LIVE->{$pid} = [ \&reap_cmd, $fgrp, $src, $update_ref ] - } + open(my $sfh, '+>', undef) or die "open(src): $!"; + $fgrp->{srcfh} = $sfh; + start_cmd($fgrp, $src, { %opt, 1 => $sfh }, $update_ref); my $dst = [ 'git', "--git-dir=$fgrp->{cur_dst}", 'for-each-ref', '--format=%(refname)%00%(objectname)' ]; - do_reap($fgrp); - $fgrp->{lei}->qerr("# @$dst >DST"); - if ($update_ref) { - open(my $fh, '+>', undef) or die "open(dst): $!"; - $pid = spawn($dst, undef, { %opt, 1 => $fh }); - $fgrp->{dstfh} = $fh; - $LIVE->{$pid} = [ \&reap_cmd, $fgrp, $dst, $update_ref ] - } + open(my $dfh, '+>', undef) or die "open(dst): $!"; + $fgrp->{dstfh} = $dfh; + start_cmd($fgrp, $dst, { %opt, 1 => $dfh }, $update_ref); } } sub fgrp_fetch_all { my ($self) = @_; - my $todo = delete $self->{fgrp_todo} or return; + my $todo = $FGRP_TODO; + $FGRP_TODO = \'BUG on further use'; keys(%$todo) or return; # Rely on the fgrptmp remote groups in the config file rather @@ -385,16 +381,16 @@ sub fgrp_fetch_all { qw(--no-tags --multiple)); }; push(@fetch, "-j$j") if $j; - my $pid; while (my ($osdir, $fgrpv) = each %$todo) { my $f = "$osdir/config"; + return if !keep_going($self); # clobber group from previous run atomically my $cmd = ['git', "--git-dir=$osdir", qw(config -f), $f, '--unset-all', "remotes.$grp"]; $self->{lei}->qerr("# @$cmd"); if (!$self->{dry_run}) { - $pid = spawn($cmd); + my $pid = spawn($cmd, undef, { 2 => $self->{lei}->{2} }); waitpid($pid, 0) // die "waitpid: $!"; die "E: @$cmd: \$?=$?" if ($? && ($? >> 8) != 5); @@ -412,12 +408,8 @@ sub fgrp_fetch_all { } $cmd = [ @git, "--git-dir=$osdir", @fetch, $grp ]; - do_reap($self); - $self->{lei}->qerr("# @$cmd"); my $end = PublicInbox::OnDestroy->new($$, \&fgrpv_done, $fgrpv); - return if $self->{dry_run}; - $pid = spawn($cmd, undef, $opt); - $LIVE->{$pid} = [ \&reap_cmd, $self, $cmd, $end ]; + start_cmd($self, $cmd, $opt, $end); } } @@ -428,45 +420,21 @@ sub forkgroup_prep { my $os = $self->{-objstore} // return; my $fg = $self->{-ent}->{forkgroup} // return; my $dir = "$os/$fg.git"; - my @cmd = ('git', "--git-dir=$dir", 'config'); - my $opt = +{ map { $_ => $self->{lei}->{$_} } (0..2) }; if (!-d $dir && !$self->{dry_run}) { PublicInbox::Import::init_bare($dir); + my @cmd = ('git', "--git-dir=$dir", 'config'); + my $opt = { 2 => $self->{lei}->{2} }; for ('repack.useDeltaIslands=true', 'pack.island=refs/remotes/([^/]+)/') { run_die([@cmd, split(/=/, $_, 2)], undef, $opt); } } my $key = $self->{-key} // die 'BUG: no -key'; - my $rn = $key; - $rn =~ s!\A[\./]+!!s; - $rn =~ s/\.*?(?:\.git)?\.*?\z//s; - $rn =~ s![\@\{\}/:\?\[\]\^~\s\f[:cntrl:]\*]!_!isg; - $rn .= '-'.substr(sha256_hex($key), 0, 16); - unless ($self->{dry_run}) { - # --no-tags is required to avoid conflicts - for ("url=$uri", "fetch=+refs/*:refs/remotes/$rn/*", - 'tagopt=--no-tags') { - my @kv = split(/=/, $_, 2); - $kv[0] = "remote.$rn.$kv[0]"; - run_die([@cmd, @kv], undef, $opt); - } - } + my $rn = substr(sha256_hex($key), 0, 16); if (!-d $self->{cur_dst} && !$self->{dry_run}) { - my $alt = File::Spec->rel2abs("$dir/objects"); PublicInbox::Import::init_bare($self->{cur_dst}); - my $o = "$self->{cur_dst}/objects"; - my $f = "$o/info/alternates"; - my $l = File::Spec->abs2rel($alt, File::Spec->rel2abs($o)); - open my $fh, '+>>', $f or die "open($f): $!"; - seek($fh, SEEK_SET, 0) or die "seek($f): $!"; - chomp(my @cur = <$fh>); - if (!grep(/\A\Q$l\E\z/, @cur)) { - say $fh $l or die "say($f): $!"; - } - close $fh or die "close($f): $!"; - $f = "$self->{cur_dst}/config"; - open $fh, '+>>', $f or die "open:($f): $!"; + my $f = "$self->{cur_dst}/config"; + open my $fh, '+>>', $f or die "open:($f): $!"; print $fh < $dir, -remote => $rn }, __PACKAGE__; + if (!$self->{dry_run}) { + my $alt = File::Spec->rel2abs("$dir/objects"); + my $o = "$self->{cur_dst}/objects"; + my $f = "$o/info/alternates"; + my $l = File::Spec->abs2rel($alt, File::Spec->rel2abs($o)); + open my $fh, '+>>', $f or die "open($f): $!"; + seek($fh, SEEK_SET, 0) or die "seek($f): $!"; + chomp(my @cur = <$fh>); + if (!grep(/\A\Q$l\E\z/, @cur)) { + say $fh $l or die "say($f): $!"; + } + close $fh or die "close($f): $!"; + } + bless { + %$self, -osdir => $dir, -remote => $rn, -uri => $uri + }, __PACKAGE__; +} + +sub fp_done { + my ($self, $cmd, $cb, @arg) = @_; + if ($?) { + $self->{lei}->err("@$cmd failed (\$?=$?) (non-fatal)"); + $? = 0; # don't let it influence normal exit + } + return if !keep_going($self); + my $fh = delete $self->{-show_ref} // die 'BUG: no show-ref output'; + seek($fh, SEEK_SET, 0) or die "seek(show_ref): $!"; + $self->{-ent} // die 'BUG: no -ent'; + my $A = $self->{-ent}->{fingerprint} // die 'BUG: no fingerprint'; + my $B = sha1_hex(do { local $/; <$fh> } // die("read(show_ref): $!")); + return $cb->($self, @arg) if $A ne $B; + $self->{lei}->qerr("# $self->{-key} up-to-date"); +} + +sub cmp_fp_do { + my ($self, $cb, @arg) = @_; + # $cb is either resume_fetch or fgrp_enqueue + $self->{-ent} // return $cb->($self, @arg); + my $new = $self->{-ent}->{fingerprint} // return $cb->($self, @arg); + my $key = $self->{-key} // die 'BUG: no -key'; + if (my $cur_ent = $self->{-local_manifest}->{$key}) { + # runs go_fetch->DESTROY run if eq + return if $cur_ent->{fingerprint} eq $new; + } + my $dst = $self->{cur_dst} // $self->{dst}; + my $cmd = ['git', "--git-dir=$dst", 'show-ref']; + my $opt = { 2 => $self->{lei}->{2} }; + open($opt->{1}, '+>', undef) or die "open(tmp): $!"; + $self->{-show_ref} = $opt->{1}; + do_reap($self); + $self->{lei}->qerr("# @$cmd"); + $LIVE->{spawn($cmd, undef, $opt)} = [ \&fp_done, $self, $cmd, + $cb, @arg ]; +} + +sub resume_fetch { + my ($self, $uri, $fini) = @_; + return if !keep_going($self); + my $dst = $self->{cur_dst} // $self->{dst}; + my @git = ('git', "--git-dir=$dst"); + my $opt = { 2 => $self->{lei}->{2} }; + my $rn = 'origin'; # configurable? + for ("url=$uri", "fetch=+refs/*:refs/*", 'mirror=true') { + my @kv = split(/=/, $_, 2); + $kv[0] = "remote.$rn.$kv[0]"; + next if $self->{dry_run}; + run_die([@git, 'config', @kv], undef, $opt); + } + my $cmd = [ @{$self->{-torsocks}}, @git, + fetch_args($self->{lei}, $opt), $rn ]; + push @$cmd, '-P' if $self->{lei}->{prune}; # --prune-tags implied + my $run_puh = PublicInbox::OnDestroy->new($$, \&run_puh, $self, $fini); + ++$self->{chg}->{nr_chg}; + start_cmd($self, $cmd, $opt, $run_puh); +} + +sub fgrp_enqueue { + my ($fgrp, $end) = @_; # $end calls fgrp_fetch_all + return if !keep_going($fgrp); + my $opt = { 2 => $fgrp->{lei}->{2} }; + # --no-tags is required to avoid conflicts + my $u = $fgrp->{-uri} // die 'BUG: no {-uri}'; + my $rn = $fgrp->{-remote} // die 'BUG: no {-remote}'; + my @cmd = ('git', "--git-dir=$fgrp->{-osdir}", 'config'); + for ("url=$u", "fetch=+refs/*:refs/remotes/$rn/*", 'tagopt=--no-tags') { + my @kv = split(/=/, $_, 2); + $kv[0] = "remote.$rn.$kv[0]"; + $fgrp->{dry_run} ? $fgrp->{lei}->qerr("# @cmd @kv") : + run_die([@cmd, @kv], undef, $opt); + } + ++$fgrp->{chg}->{nr_chg}; + push @{$FGRP_TODO->{$fgrp->{-osdir}}}, $fgrp; } sub clone_v1 { - my ($self, $nohang) = @_; + my ($self, $end) = @_; my $lei = $self->{lei}; my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return; my $uri = URI->new($self->{cur_src} // $self->{src}); + my $path = $uri->path; + $path =~ s!/*\z!! and $uri->path($path); defined($lei->{opt}->{epoch}) and die "$uri is a v1 inbox, --epoch is not supported\n"; $self->{-torsocks} //= $curl->torsocks($lei, $uri) or return; my $dst = $self->{cur_dst} // $self->{dst}; my $fini = PublicInbox::OnDestroy->new($$, \&v1_done, $self); + my $resume = -d $dst; if (my $fgrp = forkgroup_prep($self, $uri)) { $fgrp->{-fini} = $fini; - push @{$self->{fgrp_todo}->{$fgrp->{-osdir}}}, $fgrp; - } else { # normal fetch + $resume ? cmp_fp_do($fgrp, \&fgrp_enqueue, $end) + : fgrp_enqueue($fgrp, $end); + } elsif ($resume) { + cmp_fp_do($self, \&resume_fetch, $uri, $fini); + } else { # normal clone my $cmd = [ @{$self->{-torsocks}}, clone_cmd($lei, my $opt = {}), "$uri", $dst ]; if (defined($self->{-ent})) { @@ -504,7 +569,9 @@ sub clone_v1 { "$self->{dst}$ref"; } } - start_clone($self, $cmd, $opt, $fini); + ++$self->{chg}->{nr_chg}; + start_cmd($self, $cmd, $opt, PublicInbox::OnDestroy->new($$, + \&run_puh, $self, $fini)); } if (!$self->{-is_epoch} && $lei->{opt}->{'inbox-config'} =~ /\A(?:always|v1)\z/s) { @@ -513,10 +580,10 @@ sub clone_v1 { my $d = $self->{-ent} ? $self->{-ent}->{description} : undef; $self->{'txt.description'} = $d if defined $d; - (!defined($d) && !$nohang) and + (!defined($d) && !$end) and _get_txt_start($self, 'description', $fini); - $nohang or do_reap($self, 1); # for non-manifest clone + $end or do_reap($self, 1); # for non-manifest clone } sub parse_epochs ($$) { @@ -599,20 +666,119 @@ sub reap_cmd { # async, called via SIGCHLD my ($self, $cmd) = @_; my $cerr = $?; $? = 0; # don't let it influence normal exit - if ($cerr) { - kill('TERM', keys %$LIVE); - $self->{lei}->child_error($cerr, "@$cmd failed"); + $self->{lei}->child_error($cerr, "@$cmd failed (\$?=$cerr)") if $cerr; +} + +sub up_fp_done { + my ($self) = @_; + return if !keep_going($self); + my $fh = delete $self->{-show_ref_up} // die 'BUG: no show-ref output'; + seek($fh, SEEK_SET, 0) or die "seek(show_ref): $!"; + $self->{-ent} // die 'BUG: no -ent'; + my $A = $self->{-ent}->{fingerprint} // die 'BUG: no fingerprint'; + my $B = sha1_hex(do { local $/; <$fh> } // die("read(show_ref): $!")); + return if $A eq $B; + $self->{-ent}->{fingerprint} = $B; + push @{$self->{chg}->{fp_mismatch}}, $self->{-key}; +} + +sub atomic_write ($$$) { + my ($dn, $bn, $raw) = @_; + my $ft = File::Temp->new(DIR => $dn, TEMPLATE => "$bn-XXXX"); + print $ft $raw or die "print($ft): $!"; + $ft->flush or die "flush($ft): $!"; + ft_rename($ft, "$dn/$bn", 0666); +} + +sub run_next_puh { + my ($self) = @_; + my $puh = shift @{$self->{-puh_todo}} // return delete($self->{-fini}); + my $fini = PublicInbox::OnDestroy->new($$, \&run_next_puh, $self); + my $cmd = [ @$puh, ($self->{cur_dst} // $self->{dst}) ]; + my $opt = +{ map { $_ => $self->{lei}->{$_} } (0..2) }; + start_cmd($self, $cmd, undef, $opt, $fini); +} + +sub run_puh { + my ($self, $fini) = @_; + $self->{-fini} = $fini; + @{$self->{-puh_todo}} = @PUH; + run_next_puh($self); +} + +# modifies the to-be-written manifest entry, and sets values from it, too +sub update_ent { + my ($self) = @_; + my $key = $self->{-key} // die 'BUG: no -key'; + my $new = $self->{-ent}->{fingerprint}; + my $cur = $self->{-local_manifest}->{$key}->{fingerprint} // "\0"; + my $dst = $self->{cur_dst} // $self->{dst}; + if (defined($new) && $new ne $cur) { + my $cmd = ['git', "--git-dir=$dst", 'show-ref']; + my $opt = { 2 => $self->{lei}->{2} }; + open($opt->{1}, '+>', undef) or die "open(tmp): $!"; + $self->{-show_ref_up} = $opt->{1}; + my $done = PublicInbox::OnDestroy->new($$, \&up_fp_done, $self); + start_cmd($self, $cmd, $opt, $done); + } + $new = $self->{-ent}->{head}; + $cur = $self->{-local_manifest}->{$key}->{head} // "\0"; + if (defined($new) && $new ne $cur) { + # n.b. grokmirror writes raw contents to $dst/HEAD w/o locking + my $cmd = [ 'git', "--git-dir=$dst" ]; + if ($new =~ s/\Aref: //) { + push @$cmd, qw(symbolic-ref HEAD), $new; + } elsif ($new =~ /\A[a-f0-9]{40,}\z/) { + push @$cmd, qw(update-ref --no-deref HEAD), $new; + } else { + undef $cmd; + warn "W: $key: {head} => `$new' not understood\n"; + } + start_cmd($self, $cmd, { 2 => $self->{lei}->{2} }) if $cmd; + } + if (my $symlinks = $self->{-ent}->{symlinks}) { + my $top = File::Spec->rel2abs($self->{dst}); + push @{$self->{-new_symlinks}}, @$symlinks; + for my $p (@$symlinks) { + my $ln = "$top/$p"; + $ln =~ tr!/!/!s; + my (undef, $dn, $bn) = File::Spec->splitpath($ln); + File::Path::mkpath($dn); + my $tgt = "$top/$key"; + $tgt = File::Spec->abs2rel($tgt, $dn); + if (lstat($ln)) { + if (-l _) { + next if readlink($ln) eq $tgt; + unlink($ln) or die "unlink($ln): $!"; + } else { + push @{$self->{chg}->{badlink}}, $p; + } + } + symlink($tgt, $ln) or die "symlink($tgt, $ln): $!"; + ++$self->{chg}->{nr_chg}; + } } + if (defined(my $t = $self->{-ent}->{modified})) { + my ($dn, $bn) = ("$dst/info/web", 'last-modified'); + my $orig = PublicInbox::Git::try_cat("$dn/$bn"); + $t = strftime('%F %T', gmtime($t))." +0000\n"; + File::Path::mkpath($dn); + atomic_write($dn, $bn, $t) if $orig ne $t; + } + + $new = $self->{-ent}->{owner} // return; + $cur = $self->{-local_manifest}->{$key}->{owner} // "\0"; + return if $cur eq $new; + my $cmd = [ qw(git config -f), "$dst/config", 'gitweb.owner', $new ]; + start_cmd($self, $cmd, { 2 => $self->{lei}->{2} }); } sub v1_done { # called via OnDestroy my ($self) = @_; - return if $self->{dry_run} || !$LIVE; + return if $self->{dry_run} || !keep_going($self); _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]); - } + update_ent($self) if $self->{-ent}; my $o = "$dst/objects"; if (open(my $fh, '<', my $fn = "$o/info/alternates")) {; my $base = File::Spec->rel2abs($o); @@ -640,7 +806,7 @@ sub v1_done { # called via OnDestroy sub v2_done { # called via OnDestroy my ($self) = @_; - return if $self->{dry_run} || !$LIVE; + return if $self->{dry_run} || !keep_going($self); my $dst = $self->{cur_dst} // $self->{dst}; require PublicInbox::Lock; my $lk = bless { lock_path => "$dst/inbox.lock" }, 'PublicInbox::Lock'; @@ -670,7 +836,6 @@ sub clone_v2_prep ($$;$) { my $dst = $self->{cur_dst} // $self->{dst}; my $want = parse_epochs($lei->{opt}->{epoch}, $v2_epochs); my $task = $m ? bless { %$self }, __PACKAGE__ : $self; - delete $task->{todo}; # $self->{todo} still exists my (@skip, $desc); my $fini = PublicInbox::OnDestroy->new($$, \&v2_done, $task); for my $nr (sort { $a <=> $b } keys %$v2_epochs) { @@ -698,7 +863,7 @@ failed to extract epoch number from $src $etask->{cur_dst} = $edst; $etask->{-is_epoch} = $fini; my $ref = $ent->{reference} // ''; - push @{$self->{todo}->{$ref}}, $etask; + push @{$TODO->{$ref}}, $etask; $self->{any_want}->{$key} = 1; } else { # create a placeholder so users only need to chmod +w init_placeholder($src, $edst, $ent); @@ -707,7 +872,7 @@ failed to extract epoch number from $src } } # filter out the epochs we skipped - $self->{-culled_manifest} = 1 if $m && delete(@$m{@skip}); + $self->{chg}->{manifest} = 1 if $m && delete(@$m{@skip}); (!$self->{dry_run} && !-d $dst) and File::Path::mkpath($dst); @@ -730,6 +895,19 @@ sub decode_manifest ($$$) { $m; } +sub load_current_manifest ($) { + my ($self) = @_; + my $fn = $self->{-manifest} // return; + if (open(my $fh, '<', $fn)) { + decode_manifest($fh, $fn, $fn); + } elsif ($!{ENOENT}) { # non-fatal, we can just do it slowly + warn "open($fn): $!\n" if !$self->{-initial_clone}; + undef; + } else { + die "open($fn): $!\n"; + } +} + sub multi_inbox ($$$) { my ($self, $path, $m) = @_; my $incl = $self->{lei}->{opt}->{include}; @@ -751,8 +929,8 @@ sub multi_inbox ($$$) { $self->{lei}->glob2re($_) // qr/\A\Q$_\E/ } @$incl).'\\z)'; my @gone = delete @$v2{grep(!/$re/, keys %$v2)}; - delete @$m{map { @$_ } @gone} and $self->{-culled_manifest} = 1; - delete @$m{grep(!/$re/, @v1)} and $self->{-culled_manifest} = 1; + delete @$m{map { @$_ } @gone} and $self->{chg}->{manifest} = 1; + delete @$m{grep(!/$re/, @v1)} and $self->{chg}->{manifest} = 1; @v1 = grep(/$re/, @v1); } if (defined $excl) { @@ -760,8 +938,8 @@ sub multi_inbox ($$$) { $self->{lei}->glob2re($_) // qr/\A\Q$_\E/ } @$excl).'\\z)'; my @gone = delete @$v2{grep(/$re/, keys %$v2)}; - delete @$m{map { @$_ } @gone} and $self->{-culled_manifest} = 1; - delete @$m{grep(/$re/, @v1)} and $self->{-culled_manifest} = 1; + delete @$m{map { @$_ } @gone} and $self->{chg}->{manifest} = 1; + delete @$m{grep(/$re/, @v1)} and $self->{chg}->{manifest} = 1; @v1 = grep(!/$re/, @v1); } my $ret; # { v1 => [ ... ], v2 => { "/$inbox_name" => [ epochs ] }} @@ -789,19 +967,23 @@ sub multi_inbox ($$$) { sub clone_all { my ($self, $m) = @_; - my $todo = delete $self->{todo}; - my $nodep = delete $todo->{''}; - - # do not download unwanted deps - my $any_want = delete $self->{any_want}; - my @unwanted = grep { !$any_want->{$_} } keys %$todo; - my @nodep = delete(@$todo{@unwanted}); - push(@$nodep, @$_) for @nodep; - - # handle no-dependency repos, first - for (@$nodep) { - clone_v1($_, 1); - return if $self->{lei}->{child_error}; + my $todo = $TODO; + $TODO = \'BUG on further use'; + my $end = PublicInbox::OnDestroy->new($$, \&fgrp_fetch_all, $self); + { + my $nodep = delete $todo->{''}; + + # do not download unwanted deps + my $any_want = delete $self->{any_want}; + my @unwanted = grep { !$any_want->{$_} } keys %$todo; + my @nodep = delete(@$todo{@unwanted}); + push(@$nodep, @$_) for @nodep; + + # handle no-dependency repos, first + for (@$nodep) { + clone_v1($_, $end); + return if !keep_going($self); + } } # resolve references, deepest, first: while (scalar keys %$todo) { @@ -810,20 +992,27 @@ sub clone_all { # resolve multi-level references while ($m && defined($nxt = $m->{$x}->{reference})) { exists($todo->{$nxt}) or last; - die < 1000; -E: dependency loop detected (`$x' => `$nxt') + if (++$nr > 1000) { + $m->{$x}->{reference} = undef; + $m->{$nxt}->{reference} = undef; + warn < `$nxt'), breaking EOM + } $x = $nxt; } my $y = delete $todo->{$x} // next; # already done for (@$y) { - clone_v1($_, 1); - return if $self->{lei}->{child_error}; + clone_v1($_, $end); + return if !keep_going($self); } last; # restart %$todo iteration } } - fgrp_fetch_all($self); + + # $end->DESTROY will call fgrp_fetch_all once all references + # in $LIVE are gone, and do_reap will eventually drain $LIVE + $end = undef; do_reap($self, 1); } @@ -841,6 +1030,38 @@ sub dump_manifest ($$) { utime($mtime, $mtime, "$ft") or die "utime(..., $ft): $!"; } +sub dump_project_list ($$) { + my ($self, $m) = @_; + my $f = $self->{'-project-list'} // return; + my $old = PublicInbox::Git::try_cat($f); + my %new; + + open my $dh, '<', '.' or die "open(.): $!"; + chdir($self->{dst}) or die "chdir($self->{dst}): $!"; + my @local = grep { -e $_ ? ($new{$_} = undef) : 1 } split(/\n/s, $old); + chdir($dh) or die "chdir(restore): $!"; + + $new{substr($_, 1)} = 1 for keys %$m; # drop leading '/' + my @list = sort keys %new; + my @remote = grep { !defined($new{$_}) } @list; + my %lnk = map { substr($_, 1) => undef } @{$self->{-new_symlinks}}; + @remote = grep { !exists($lnk{$_}) } @remote; + + warn <{src}: +EOM + warn "\t", $_, "\n" for @remote; + warn <splitpath($f); + $self->{chg}->{nr_chg} += scalar(@remote) + scalar(@local); + my $new = join("\n", @list, ''); + atomic_write($dn, $bn, $new) if $new ne $old; +} + # FIXME: this gets confused by single inbox instance w/ global manifest.js.gz sub try_manifest { my ($self) = @_; @@ -851,25 +1072,40 @@ sub try_manifest { my $path = $uri->path; chop($path) eq '/' or die "BUG: $uri not canonicalized"; $uri->path($path . '/manifest.js.gz'); - my $ft = File::Temp->new(TEMPLATE => '.manifest-XXXX', - UNLINK => 1, TMPDIR => 1, SUFFIX => '.tmp'); - my $cmd = $curl->for_uri($lei, $uri, qw(-f -R -o), $ft->filename); - my %opt = map { $_ => $lei->{$_} } (0..2); + my $manifest = $self->{-manifest} // "$self->{dst}/manifest.js.gz"; + my %opt = (UNLINK => 1, SUFFIX => '.tmp', TMPDIR => 1); + if (!$self->{dry_run} && $manifest =~ m!\A(.+?)/[^/]+\z! and -d $1) { + $opt{DIR} = $1; # allows fast rename(2) w/o EXDEV + delete $opt{TMPDIR}; + } + my $ft = File::Temp->new(TEMPLATE => '.manifest-XXXX', %opt); + my $cmd = $curl->for_uri($lei, $uri, qw(-R -o), $ft->filename); + push(@$cmd, '-z', $manifest) if -f $manifest; + my $mf_url = "$uri"; + %opt = map { $_ => $lei->{$_} } (0..2); my $cerr = run_reap($lei, $cmd, \%opt); if ($cerr) { return try_scrape($self) if ($cerr >> 8) == 22; # 404 missing return $lei->child_error($cerr, "@$cmd failed"); } + + # bail out if curl -z/--timecond hit 304 Not Modified, $ft will be empty + if (-f $manifest && !-s $ft) { + $lei->child_error(127 << 8) if $lei->{opt}->{'exit-code'}; + return $lei->qerr("# $manifest unchanged"); + } + my $m = eval { decode_manifest($ft, $ft, $uri) }; if ($@) { warn $@; return try_scrape($self); } + local $self->{chg} = {}; + local $self->{-local_manifest} = load_current_manifest($self); + local $self->{-new_symlinks} = []; my ($path_pfx, $n, $multi) = multi_inbox($self, \$path, $m); return $lei->child_error(1, $multi) if !ref($multi); my $v2 = delete $multi->{v2}; - local $self->{todo} = {}; - local $self->{fgrp_todo} = {}; # { objstore_dir => [fgrp, ...] } if ($v2) { for my $name (sort keys %$v2) { my $epochs = delete $v2->{$name}; @@ -892,7 +1128,7 @@ sub try_manifest { E: `$self->{cur_dst}' must not contain newline EOM clone_v2_prep($self, \%v2_epochs, $m); - return if $self->{lei}->{child_error}; + return if !keep_going($self); } } if (my $v1 = delete $multi->{v1}) { @@ -915,18 +1151,38 @@ E: `$task->{cur_dst}' must not contain newline EOM $task->{cur_src} .= '/'; my $dep = $task->{-ent}->{reference} // ''; - push @{$self->{todo}->{$dep}}, $task; # for clone_all + push @{$TODO->{$dep}}, $task; # for clone_all $self->{any_want}->{$name} = 1; } } delete local $lei->{opt}->{epoch} if defined($v2); clone_all($self, $m); - return if $self->{lei}->{child_error} || $self->{dry_run}; + return if $self->{dry_run} || !keep_going($self); # set by clone_v2_prep/-I/--exclude - dump_manifest($m => $ft) if delete $self->{-culled_manifest}; - ft_rename($ft, "$self->{dst}/manifest.js.gz", 0666); - open my $x, '>', "$self->{dst}/mirror.done"; # for _wq_done_wait + my $mis = delete $self->{chg}->{fp_mismatch}; + if ($mis) { + my $t = (stat($ft))[9]; + $t = strftime('%F %k:%M:%S %z', localtime($t)); + warn <{lei}->{opt}->{prune}; +W: The above fingerprints may never match without --prune +EOM + } + dump_manifest($m => $ft) if delete($self->{chg}->{manifest}) || $mis; + my $bad = delete $self->{chg}->{badlink}; + warn(<{chg}->{nr_chg} && $lei->{opt}->{'exit-code'} and + $lei->child_error(127 << 8); } sub start_clone_url { @@ -940,17 +1196,32 @@ sub do_mirror { # via wq_io_do or public-inbox-clone my $lei = $self->{lei}; $self->{dry_run} = 1 if $lei->{opt}->{'dry-run'}; umask($lei->{client_umask}) if defined $lei->{client_umask}; + $self->{-initial_clone} = 1 if !-d $self->{dst}; + local @PUH; + if (defined(my $puh = $lei->{opt}->{'post-update-hook'})) { + require Text::ParseWords; + @PUH = map { [ Text::ParseWords::shellwords($_) ] } @$puh; + } 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' - if (defined(my $os = $lei->{opt}->{objstore})) { - $os = 'objstore' if $os eq ''; # --objstore w/o args - $os = "$self->{dst}/$os" if $os !~ m!\A/!; - $self->{-objstore} = $os; + # we support these switches with '' (empty string). + # defaults match example conf distributed with grokmirror + my @pairs = qw(objstore objstore manifest manifest.js.gz + project-list projects.list); + while (@pairs) { + my ($k, $default) = splice(@pairs, 0, 2); + my $v = $lei->{opt}->{$k} // next; + $v = $default if $v eq ''; + $v = "$self->{dst}/$v" if $v !~ m!\A\.{0,2}/!; + $self->{"-$k"} = $v; } - local $LIVE; + + local $LIVE = {}; + local $TODO = {}; + local $FGRP_TODO = {}; my $iv = $lei->{opt}->{'inbox-version'} // return start_clone_url($self); return clone_v1($self) if $iv == 1;