Contents

require 'open3'

require 'wright/dry_run'
require 'wright/provider'
require 'wright/provider/package'

module Wright
  class Provider
    class Package
      # Apt package provider. Used as a provider for
      # {Resource::Package} on Debian-based systems.
      class Apt < Wright::Provider::Package
        # @return [Array<String>] the installed package versions
        def installed_versions
          cmd = 'dpkg-query'
          args = ['-s', @resource.name]
          cmd_stdout, _, cmd_status = Open3.capture3(env, cmd, *args)
          installed_re = /^Status: install ok installed$/

          if cmd_status.success? && installed_re =~ cmd_stdout
            /^Version: (?<version>.*)$/ =~ cmd_stdout
            [version]
          else
            []
          end
        end

        private

        def install_package
          package = @resource.name
          unless_dry_run("install package: '#{package}'") do
            apt_get(:install, package, @resource.version)
          end
        end

        def remove_package
          package = @resource.name
          unless_dry_run("remove package: '#{package}'") do
            apt_get(:remove, package)
          end
        end

        def apt_get(action, package, version = nil)
          package_version = version.nil? ? '' : "=#{version}"
          cmd = 'apt-get'
          args = [action.to_s, '-qy', package + package_version]
          exec_or_fail(cmd, args, "cannot #{action} package '#{package}'")
        end

        def env
          { 'DEBIAN_FRONTEND' => 'noninteractive' }
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
wright-0.2.0	lib/wright/provider/package/apt.rb