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package Alien::Build::Plugin::Download::GitLab;
use strict;
use warnings;
use 5.008004;
use Carp qw( croak );
use URI;
use JSON::PP qw( decode_json );
use URI::Escape qw( uri_escape );
use Alien::Build::Plugin;
use File::Basename qw( basename );
use Path::Tiny qw( path );
# ABSTRACT: Alien::Build plugin to download from GitLab
our $VERSION = '0.01'; # VERSION
has gitlab_host => 'https://gitlab.com';
has gitlab_user => undef;
has gitlab_project => undef;
has type => 'source'; # source or link
has format => 'tar.gz';
has version_from => 'tag_name'; # tag_name or name
has convert_version => undef;
has link_name => undef;
sub init
{
my($self, $meta) = @_;
croak("No gitlab_user provided") unless defined $self->gitlab_user;
croak("No gitlab_project provided") unless defined $self->gitlab_project;
croak("Don't set set a start_url with the Download::GitLab plugin") if defined $meta->prop->{start_url};
$meta->add_requires('configure' => 'Alien::Build::Plugin::Download::GitLab' => 0 );
my $url = URI->new($self->gitlab_host);
$url->path("/api/v4/projects/@{[ uri_escape(join '/', $self->gitlab_user, $self->gitlab_project) ]}/releases");
$meta->prop->{start_url} ||= "$url";
$meta->apply_plugin('Download');
$meta->apply_plugin('Extract', format => $self->format );
# we assume that GitLab returns the releases in reverse
# chronological order.
$meta->register_hook(
prefer => sub {
my($build, $res) = @_;
return $res;
},
);
croak "type must be one of source or link" if $self->type !~ /^(source|link)$/;
croak "version_from must be one of tag_name or name" if $self->version_from !~ /^(tag_name|name)$/;
## TODO insert tokens as header if possible
## This may help with rate limiting (or if not then don't bother)
# curl --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/projects/24/releases"
$meta->around_hook(
fetch => sub {
my $orig = shift;
my($build, $url, @the_rest) = @_;
# only modify the response if we are using the GitLab API
# to get the release list
return $orig->($build, $url, @the_rest)
if defined $url && $url ne $meta->prop->{start_url};
my $res = $orig->($build, $url, @the_rest);
my $res2 = {
type => 'list',
list => [],
};
$res2->{protocol} = $res->{protocol} if exists $res->{protocol};
my $rel;
if($res->{content})
{
$rel = decode_json $res->{content};
}
elsif($res->{path})
{
$rel = decode_json path($res->{path})->slurp_raw;
}
else
{
croak("malformed response object: no content or path");
}
foreach my $release (@$rel)
{
my $version = $self->version_from eq 'name' ? $release->{name} : $release->{tag_name};
$version = $self->convert_version->($version) if $self->convert_version;
if($self->type eq 'source')
{
foreach my $source (@{ $release->{assets}->{sources} })
{
next unless $source->{format} eq $self->format;
my $url = URI->new($source->{url});
my $filename = basename $url->path;
push @{ $res2->{list} }, {
filename => $filename,
url => $source->{url},
version => $version,
};
}
}
else # link
{
foreach my $link (@{ $release->{assets}->{links} })
{
my $url = URI->new($link->{url});
my $filename => basename $url->path;
if($self->link_name)
{
next unless $filename =~ $self->link_name;
}
push @{ $res2->{list} }, {
filename => $filename,
url => $link->{url},
version => $version,
};
}
}
}
return $res2;
},
);
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Alien::Build::Plugin::Download::GitLab - Alien::Build plugin to download from GitLab
=head1 VERSION
version 0.01
=head1 SYNOPSIS
use alienfile;
plugin 'Download::GitLab' => (
gitlab_user => 'plicease',
gitlab_project => 'dontpanic',
);
=head1 DESCRIPTION
This plugin is designed for downloading assets from a GitLab instance.
=head1 PROPERTIES
=head2 gitlab_host
The host to fetch from L<https://gitlab.com> by default.
=head2 gitlab_user
The user to fetch from.
=head2 gitlab_project
The project to fetch from.
=head2 type
The asset type to fetch. This must be one of C<source> or C<link>.
=head2 format
The expected format of the asset. This should be one that
L<Alien::Build::Plugin::Extract::Negotiate> understands. The
default is C<tar.gz>.
=head2 version_from
Where to compute the version from. This should be one of
C<tag_name> or C<name>. The default is C<tag_name>.
=head2 convert_version
This is an optional code reference, which can be used to modify
the version. For example, if tags have a C<v> prefix you could
remove it like so:
plugin 'Download::GitLab' => (
gitlab_user => 'plicease',
gitlab_project => 'dontpanic',
convert_version => sub {
my $version = shift;
$version =~ s/^v//;
return $version;
},
);
=head2 link_name
For C<link> types, this is a regular expression that filters the
asset filenames. For example, if there are multiple archive
formats provided, you can get just the gzip'd tarball by setting
this to C<qr/\.tar\.gz$/>.
=head1 SEE ALSO
=over 4
=item L<Alien>
=item L<Alien::Build::Plugin::Download::GitHub>
=item L<alienfile>
=item L<Alien::Build>
=back
=head1 AUTHOR
Graham Ollis <plicease@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2022 by Graham Ollis.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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