services/api/app/controllers/arvados/v1/users_controller.rb

   1 class Arvados::V1::UsersController < ApplicationController
   2   skip_before_filter :find_object_by_uuid, only:
   3     [:activate, :event_stream, :current, :system]
   4   skip_before_filter :render_404_if_no_object, only:
   5     [:activate, :event_stream, :current, :system]
   6
   7   def current
   8     @object = current_user
   9     show
  10   end
  11   def system
  12     @object = system_user
  13     show
  14   end
  15
  16   class ChannelStreamer
  17     Q_UPDATE_INTERVAL = 12
  18     def initialize(opts={})
  19       @opts = opts
  20     end
  21     def each
  22       return unless @opts[:channel]
  23       @redis = Redis.new(:timeout => 0)
  24       @redis.subscribe(@opts[:channel]) do |event|
  25         event.message do |channel, msg|
  26           yield msg + "\n"
  27         end
  28       end
  29     end
  30   end
  31
  32   def event_stream
  33     channel = current_user.andand.uuid
  34     if current_user.andand.is_admin
  35       channel = params[:uuid] || channel
  36     end
  37     if client_accepts_plain_text_stream
  38       self.response.headers['Last-Modified'] = Time.now.ctime.to_s
  39       self.response_body = ChannelStreamer.new(channel: channel)
  40     else
  41       render json: {
  42         href: url_for(uuid: channel),
  43         comment: ('To retrieve the event stream as plain text, ' +
  44                   'use a request header like "Accept: text/plain"')
  45       }
  46     end
  47   end
  48
  49   def activate
  50     if current_user.andand.is_admin && params[:uuid]
  51       @object = User.find params[:uuid]
  52     else
  53       @object = current_user
  54     end
  55     if not @object.is_active
  56       if not (current_user.is_admin or @object.is_invited)
  57         logger.warn "User #{@object.uuid} called users.activate " +
  58           "but is not invited"
  59         raise ArgumentError.new "Cannot activate without being invited."
  60       end
  61       act_as_system_user do
  62         required_uuids = Link.where(owner_uuid: system_user_uuid,
  63                                     link_class: 'signature',
  64                                     name: 'require',
  65                                     tail_uuid: system_user_uuid,
  66                                     head_kind: 'arvados#collection').
  67           collect(&:head_uuid)
  68         signed_uuids = Link.where(owner_uuid: system_user_uuid,
  69                                   link_class: 'signature',
  70                                   name: 'click',
  71                                   tail_kind: 'arvados#user',
  72                                   tail_uuid: @object.uuid,
  73                                   head_kind: 'arvados#collection',
  74                                   head_uuid: required_uuids).
  75           collect(&:head_uuid)
  76         todo_uuids = required_uuids - signed_uuids
  77         if todo_uuids == []
  78           @object.update_attributes is_active: true
  79           logger.info "User #{@object.uuid} activated"
  80         else
  81           logger.warn "User #{@object.uuid} called users.activate " +
  82             "before signing agreements #{todo_uuids.inspect}"
  83           raise ArvadosModel::PermissionDeniedError.new \
  84           "Cannot activate without user agreements #{todo_uuids.inspect}."
  85         end
  86       end
  87     end
  88     show
  89   end
  90 end