Method: Beaker::Docker#provision

Defined in:
lib/beaker/hypervisor/docker.rb

#provision ⇒ Object 



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# File 'lib/beaker/hypervisor/docker.rb', line 46

def provision
  @logger.notify "Provisioning docker"

  @hosts.each do |host|
    @logger.notify "provisioning #{host.name}"

    @logger.debug("Creating image")
    image = ::Docker::Image.build(dockerfile_for(host), { :rm => true })

    if @docker_type == 'swarm'
      image_name = "#{@registry}/beaker/#{image.id}"
      ret = ::Docker::Image.search(:term => image_name)
      if ret.first.nil?
        @logger.debug("Image does not exist on registry. Pushing.")
        image.tag({:repo => image_name, :force => true})
        image.push
      end
    else
      image_name = image.id
    end

    container_opts = {
      'Image' => image_name,
      'Hostname' => host.name,
    }
    container = find_container(host)

    # If the specified container exists, then use it rather creating a new one
    if container.nil?
      unless host['mount_folders'].nil?
        container_opts['HostConfig'] ||= {}
        container_opts['HostConfig']['Binds'] = host['mount_folders'].values.map do |mount|
          a = [ File.expand_path(mount['host_path']), mount['container_path'] ]
          a << mount['opts'] if mount.has_key?('opts')
          a.join(':')
        end
      end

      if @options[:provision]
        if host['docker_container_name']
          container_opts['name'] = host['docker_container_name']
        end

        @logger.debug("Creating container from image #{image_name}")
        container = ::Docker::Container.create(container_opts)
      end
    end

    if container.nil?
      raise RuntimeError, 'Cannot continue because no existing container ' +
                          'could be found and provisioning is disabled.'
    end

    fix_ssh(container) if @options[:provision] == false

    @logger.debug("Starting container #{container.id}")
    container.start({"PublishAllPorts" => true, "Privileged" => true})

    # Find out where the ssh port is from the container
    # When running on swarm DOCKER_HOST points to the swarm manager so we have to get the
    # IP of the swarm slave via the container data
    # When we are talking to a normal docker instance DOCKER_HOST can point to a remote docker instance.

    # Talking against a remote docker host which is a normal docker host
    if @docker_type == 'docker' && ENV['DOCKER_HOST']
      ip = URI.parse(ENV['DOCKER_HOST']).host
    else
      # Swarm or local docker host
      ip = container.json["NetworkSettings"]["Ports"]["22/tcp"][0]["HostIp"]
    end

    @logger.info("Using docker server at #{ip}")
    port = container.json["NetworkSettings"]["Ports"]["22/tcp"][0]["HostPort"]

    forward_ssh_agent = @options[:forward_ssh_agent] || false

    # Update host metadata
    host['ip']  = ip
    host['port'] = port
    host['ssh']  = {
      :password => root_password,
      :port => port,
      :forward_agent => forward_ssh_agent,
    }

    @logger.debug("node available as  ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@#{ip} -p #{port}")
    host['docker_container'] = container
    host['docker_image'] = image
    host['vm_ip'] = container.json["NetworkSettings"]["IPAddress"].to_s

  end

  hack_etc_hosts @hosts, @options

end