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support history API for CPANMetaDB #15

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support history API for CPANMetaDB #15

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58 changes: 49 additions & 9 deletions lib/CPAN/Common/Index/MetaDB.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ use Class::Tiny qw/uri/;

use Carp;
use CPAN::Meta::YAML;
use CPAN::Meta::Requirements;
use HTTP::Tiny;

=attr uri
Expand All @@ -38,25 +39,61 @@ sub search_packages {
Carp::croak("Argument to search_packages must be hash reference")
unless ref $args eq 'HASH';

# only support direct package query
return
unless keys %$args == 1 && exists $args->{package} && ref $args->{package} eq '';
unless exists $args->{package} && ref $args->{package} eq '';

my $mod = $args->{package};
my $res = HTTP::Tiny->new->get( $self->uri . "package/$mod" );
return unless $res->{success};

if ( my $yaml = CPAN::Meta::YAML->read_string( $res->{content} ) ) {
my $meta = $yaml->[0];
if ( $meta && $meta->{distfile} ) {
my $file = $meta->{distfile};
if ($args->{version} || $args->{version_range}) {
my $res = HTTP::Tiny->new->get( $self->uri . "history/$mod" );
return unless $res->{success};

my $range = defined $args->{version} ? "== $args->{version}" : $args->{version_range};
my $reqs = CPAN::Meta::Requirements->from_string_hash({ $mod => $range });

my @found;
for my $line ( split /\r?\n/, $res->{content} ) {
if ($line =~ /^$mod\s+(\S+)\s+(\S+)$/) {
push @found, {
version => $1,
version_o => version::->parse($1),
distfile => $2,
};
}
}

my $match;
for my $try (sort { $b->{version_o} <=> $a->{version_o} } @found) {
if ($reqs->accepts_module($mod => $try->{version_o})) {
$match = $try, last;
}
}

if ($match) {
my $file = $match->{distfile};
$file =~ s{^./../}{}; # strip leading
return {
package => $mod,
version => $meta->{version},
version => $match->{version},
uri => "cpan:///distfile/$file",
};
}
} else {
my $res = HTTP::Tiny->new->get( $self->uri . "package/$mod" );
return unless $res->{success};

if ( my $yaml = CPAN::Meta::YAML->read_string( $res->{content} ) ) {
my $meta = $yaml->[0];
if ( $meta && $meta->{distfile} ) {
my $file = $meta->{distfile};
$file =~ s{^./../}{}; # strip leading
return {
package => $mod,
version => $meta->{version},
uri => "cpan:///distfile/$file",
};
}
}
}

return;
Expand All @@ -76,6 +113,9 @@ sub search_authors { return }; # not supported

$index = CPAN::Common::Index::MetaDB->new;

$index->search_packages({ package => "Moose" });
$index->search_packages({ package => "Moose", version_range => ">= 2.0" });

=head1 DESCRIPTION

This module implements a CPAN::Common::Index that searches for packages against
Expand Down
24 changes: 23 additions & 1 deletion t/metadb.t
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Expand Up @@ -28,7 +28,7 @@ subtest "constructor tests" => sub {
# uri specified
new_ok(
'CPAN::Common::Index::MetaDB' => [ { uri => "http://example.com" } ],
"new with cache"
"new with uri"
);

};
Expand All @@ -47,6 +47,28 @@ subtest 'find package' => sub {

};

subtest 'find package with fixed version' => sub {
my $index = new_ok("CPAN::Common::Index::MetaDB");

my $got = $index->search_packages( { package => 'Moose', version => '2.1404' } );
ok( $got, "found package" );
is( $got->{version}, 2.1404, "has a version" );
is(
$got->{uri},
"cpan:///distfile/ETHER/Moose-2.1404.tar.gz",
"uri is OK"
);

};

subtest 'find package with version range' => sub {
my $index = new_ok("CPAN::Common::Index::MetaDB");

my $got = $index->search_packages( { package => 'Moose', version_range => '< 2.14' } );
ok( $got, "found package" );
ok( $got->{version} < 2.14, "has a version" );
};

done_testing;
# COPYRIGHT
# vim: ts=4 sts=4 sw=4 et: