require "vagrant/util/retryable" require "vagrant/util/subprocess" require "vagrant-lxc/errors" require "vagrant-lxc/driver/cli" module Vagrant module LXC class Driver # This is raised if the container can't be found when initializing it with # a name. class ContainerNotFound < StandardError; end attr_reader :container_name, :customizations def initialize(container_name, sudo_wrapper, cli = nil) @container_name = container_name @sudo_wrapper = sudo_wrapper @cli = cli || CLI.new(sudo_wrapper, container_name) @logger = Log4r::Logger.new("vagrant::provider::lxc::driver") @customizations = [] end def validate! raise ContainerNotFound if @container_name && ! @cli.list.include?(@container_name) end def base_path Pathname.new("#{CONTAINERS_PATH}/#{@container_name}") end def rootfs_path Pathname.new(base_path.join('config').read.match(/^lxc\.rootfs\s+=\s+(.+)$/)[1]) end def create(name, template_path, config_file, template_options = {}) @cli.name = @container_name = name import_template(template_path) do |template_name| @logger.debug "Creating container..." @cli.create template_name, config_file, template_options end end def share_folders(folders) folders.each do |folder| guestpath = rootfs_path.join(folder[:guestpath].gsub(/^\//, '')) unless guestpath.directory? begin @logger.debug("Guest path doesn't exist, creating: #{guestpath}") @sudo_wrapper.run('mkdir', '-p', guestpath.to_s) rescue Errno::EACCES raise Vagrant::Errors::SharedFolderCreateFailed, :path => guestpath.to_s end end @customizations << ['mount.entry', "#{folder[:hostpath]} #{guestpath} none bind 0 0"] end end def start(customizations) @logger.info('Starting container...') if ENV['LXC_START_LOG_FILE'] extra = ['-o', ENV['LXC_START_LOG_FILE'], '-l', 'DEBUG'] end customizations = customizations + @customizations @cli.transition_to(:running) { |c| c.start(customizations, (extra || nil)) } end def forced_halt @logger.info('Shutting down container...') @cli.transition_to(:stopped) { |c| c.shutdown } rescue CLI::TargetStateNotReached @cli.transition_to(:stopped) { |c| c.stop } end def destroy @cli.destroy end # TODO: This needs to be reviewed and specs needs to be written def compress_rootfs rootfs_dirname = File.dirname rootfs_path basename = rootfs_path.to_s.gsub(/^#{Regexp.escape rootfs_dirname}\//, '') # TODO: Pass in tmpdir so we can clean up from outside target_path = "#{Dir.mktmpdir}/rootfs.tar.gz" Dir.chdir base_path do @logger.info "Compressing '#{rootfs_path}' rootfs to #{target_path}" @sudo_wrapper.run('rm', '-f', 'rootfs.tar.gz') @sudo_wrapper.run('tar', '--numeric-owner', '-czf', target_path, "#{basename}/*") @logger.info "Changing rootfs tarbal owner" @sudo_wrapper.run('chown', "#{ENV['USER']}:#{ENV['USER']}", target_path) end target_path end def state if @container_name @cli.state end end def assigned_ip end protected # Root folder where container configs are stored CONTAINERS_PATH = '/var/lib/lxc' def base_path Pathname.new("#{CONTAINERS_PATH}/#{@container_name}") end def import_template(path) template_name = "vagrant-tmp-#{@container_name}" tmp_template_path = templates_path.join("lxc-#{template_name}").to_s @logger.debug 'Copying LXC template into place' @sudo_wrapper.run('cp', path, tmp_template_path) yield template_name ensure @sudo_wrapper.run('rm', tmp_template_path) end TEMPLATES_PATH_LOOKUP = %w( /usr/share/lxc/templates /usr/lib/lxc/templates /usr/lib64/lxc/templates /usr/local/lib/lxc/templates ) def templates_path return @templates_path if @templates_path path = TEMPLATES_PATH_LOOKUP.find { |candidate| File.directory?(candidate) } # TODO: Raise an user friendly error raise 'Unable to identify lxc templates path!' unless path @templates_path = Pathname(path) end end end end