File Coverage

blib/lib/API/Docker.pm

Criterion	Covered	Total	%
statement	33	42	78.5
branch	0	6	0.0
condition	0	3	0.0
subroutine	15	16	93.7
pod	1	1	100.0
total	49	68	72.0

package API::Docker;
# ABSTRACT: Perl client for the Docker Engine API
our $VERSION = '0.002';
use Moo;
use Carp qw( croak );
use Log::Any qw( $log );

use API::Docker::API::System;
use API::Docker::API::Containers;
use API::Docker::API::Images;
use API::Docker::API::Networks;
use API::Docker::API::Volumes;
use API::Docker::API::Exec;


has host => (
  is      => 'ro',
  default => sub { $ENV{DOCKER_HOST} // 'unix:///var/run/docker.sock' },
);


has api_version => (
  is      => 'rwp',
  default => undef,
);


has tls => (
  is      => 'ro',
  default => 0,
);


has cert_path => (
  is      => 'ro',
  default => sub { $ENV{DOCKER_CERT_PATH} },
);


has _version_negotiated => (
  is      => 'rw',
  default => 0,
);

with 'API::Docker::Role::HTTP';

has system => (
  is      => 'lazy',
  builder => sub { API::Docker::API::System->new(client => $_[0]) },
);


has containers => (
  is      => 'lazy',
  builder => sub { API::Docker::API::Containers->new(client => $_[0]) },
);


has images => (
  is      => 'lazy',
  builder => sub { API::Docker::API::Images->new(client => $_[0]) },
);


has networks => (
  is      => 'lazy',
  builder => sub { API::Docker::API::Networks->new(client => $_[0]) },
);


has volumes => (
  is      => 'lazy',
  builder => sub { API::Docker::API::Volumes->new(client => $_[0]) },
);


has exec => (
  is      => 'lazy',
  builder => sub { API::Docker::API::Exec->new(client => $_[0]) },
);


sub negotiate_version {
  my ($self) = @_;
  return if $self->_version_negotiated;
  return if defined $self->api_version;

  $log->debug("Auto-negotiating API version");
  my $version_info = $self->_request('GET', '/version');
  if ($version_info && $version_info->{ApiVersion}) {
    $self->_set_api_version($version_info->{ApiVersion});
    $log->debugf("Negotiated API version: %s", $version_info->{ApiVersion});
  }
  $self->_version_negotiated(1);
}


around _request => sub {
  my ($orig, $self, $method, $path, %opts) = @_;

  # Auto-negotiate before any versioned request, but not for /version itself
  if ($path ne '/version' && !defined $self->api_version && !$self->_version_negotiated) {
    $self->negotiate_version;
  }

  return $self->$orig($method, $path, %opts);
};


1;

__END__