# Copyright (C) 2020 all contributors # License: AGPL-3.0+ # generates manifest.js.gz for grokmirror(1) package PublicInbox::ManifestJsGz; use strict; use v5.10.1; use parent qw(PublicInbox::WwwListing); use Digest::SHA (); use File::Spec (); use bytes (); # length use PublicInbox::Inbox; use PublicInbox::Git; use IO::Compress::Gzip qw(gzip); use HTTP::Date qw(time2str); *try_cat = \&PublicInbox::Inbox::try_cat; our $json; for my $mod (qw(JSON::MaybeXS JSON JSON::PP)) { eval "require $mod" or next; # ->ascii encodes non-ASCII to "\uXXXX" $json = $mod->new->ascii(1) and last; } # called by WwwListing sub url_regexp { my ($ctx) = @_; # grokmirror uses relative paths, so it's domain-dependent # SUPER calls PublicInbox::WwwListing::url_regexp $ctx->SUPER::url_regexp('publicInbox.grokManifest', 'match=domain'); } sub fingerprint ($) { my ($git) = @_; # TODO: convert to qspawn for fairness when there's # thousands of repos my ($fh, $pid) = $git->popen('show-ref'); my $dig = Digest::SHA->new(1); while (read($fh, my $buf, 65536)) { $dig->add($buf); } close $fh; waitpid($pid, 0); return if $?; # empty, uninitialized git repo $dig->hexdigest; } sub manifest_add ($$;$$) { my ($ctx, $ibx, $epoch, $default_desc) = @_; my $url_path = "/$ibx->{name}"; my $git_dir = $ibx->{inboxdir}; if (defined $epoch) { $git_dir .= "/git/$epoch.git"; $url_path .= "/git/$epoch.git"; } return unless -d $git_dir; my $git = PublicInbox::Git->new($git_dir); my $fingerprint = fingerprint($git) or return; # no empty repos chomp(my $owner = $git->qx('config', 'gitweb.owner')); chomp(my $desc = try_cat("$git_dir/description")); utf8::decode($owner); utf8::decode($desc); $owner = undef if $owner eq ''; $desc = 'Unnamed repository' if $desc eq ''; # templates/hooks--update.sample and git-multimail in git.git # only match "Unnamed repository", not the full contents of # templates/this--description in git.git if ($desc =~ /\AUnnamed repository/) { $desc = "$default_desc [epoch $epoch]" if defined($epoch); } my $reference; chomp(my $alt = try_cat("$git_dir/objects/info/alternates")); if ($alt) { # n.b.: GitPython doesn't seem to handle comments or C-quoted # strings like native git does; and we don't for now, either. my @alt = split(/\n+/, $alt); # grokmirror only supports 1 alternate for "reference", if (scalar(@alt) == 1) { my $objdir = "$git_dir/objects"; $reference = File::Spec->rel2abs($alt[0], $objdir); $reference =~ s!/[^/]+/?\z!!; # basename } } $ctx->{-abs2urlpath}->{$git_dir} = $url_path; my $modified = $git->modified; if ($modified > ($ctx->{-mtime} // 0)) { $ctx->{-mtime} = $modified; } $ctx->{manifest}->{$url_path} = { owner => $owner, reference => $reference, description => $desc, modified => $modified, fingerprint => $fingerprint, }; } sub ibx_entry { my ($ctx, $ibx) = @_; eval { if (defined(my $max = $ibx->max_git_epoch)) { my $desc = $ibx->description; for my $epoch (0..$max) { manifest_add($ctx, $ibx, $epoch, $desc); } } else { manifest_add($ctx, $ibx); } }; warn "E: $@" if $@; } sub hide_key { 'manifest' } # overrides WwwListing->psgi_triple sub psgi_triple { my ($ctx) = @_; my $abs2urlpath = delete($ctx->{-abs2urlpath}) // {}; my $manifest = delete($ctx->{manifest}) // {}; while (my ($url_path, $repo) = each %$manifest) { defined(my $abs = $repo->{reference}) or next; $repo->{reference} = $abs2urlpath->{$abs}; } $manifest = $json->encode($manifest); gzip(\$manifest => \(my $out)); [ 200, [ qw(Content-Type application/gzip), 'Last-Modified', time2str($ctx->{-mtime}), 'Content-Length', bytes::length($out) ], [ $out ] ] } 1;