services/api/lib/current_api_client.rb

   1 module CurrentApiClient
   2   def current_user
   3     Thread.current[:user]
   4   end
   5
   6   def current_api_client
   7     Thread.current[:api_client]
   8   end
   9
  10   def current_api_client_authorization
  11     Thread.current[:api_client_authorization]
  12   end
  13
  14   def current_api_base
  15     Thread.current[:api_url_base]
  16   end
  17
  18   def current_default_owner
  19     # owner_uuid for newly created objects
  20     ((current_api_client_authorization &&
  21       current_api_client_authorization.default_owner_uuid) ||
  22      (current_user && current_user.default_owner_uuid) ||
  23      (current_user && current_user.uuid) ||
  24      nil)
  25   end
  26
  27   # Where is the client connecting from?
  28   def current_api_client_ip_address
  29     Thread.current[:api_client_ip_address]
  30   end
  31
  32   def system_user_uuid
  33     [Server::Application.config.uuid_prefix,
  34      User.uuid_prefix,
  35      '000000000000000'].join('-')
  36   end
  37
  38   def system_group_uuid
  39     [Server::Application.config.uuid_prefix,
  40      Group.uuid_prefix,
  41      '000000000000000'].join('-')
  42   end
  43
  44   def system_user
  45     if not $system_user
  46       real_current_user = Thread.current[:user]
  47       Thread.current[:user] = User.new(is_admin: true, is_active: true)
  48       $system_user = User.where('uuid=?', system_user_uuid).first
  49       if !$system_user
  50         $system_user = User.new(uuid: system_user_uuid,
  51                                 is_active: true,
  52                                 is_admin: true,
  53                                 email: 'root',
  54                                 first_name: 'root',
  55                                 last_name: '')
  56         $system_user.save!
  57         $system_user.reload
  58       end
  59       Thread.current[:user] = real_current_user
  60     end
  61     $system_user
  62   end
  63
  64   def system_group
  65     if not $system_group
  66       act_as_system_user do
  67         ActiveRecord::Base.transaction do
  68           $system_group = Group.
  69             where(uuid: system_group_uuid).first_or_create do |g|
  70             g.update_attributes(name: "System group",
  71                                 description: "System group")
  72             User.all.collect(&:uuid).each do |user_uuid|
  73               Link.create(link_class: 'permission',
  74                           name: 'can_manage',
  75                           tail_kind: 'arvados#group',
  76                           tail_uuid: system_group_uuid,
  77                           head_kind: 'arvados#user',
  78                           head_uuid: user_uuid)
  79             end
  80           end
  81         end
  82       end
  83     end
  84     $system_group
  85   end
  86
  87   def act_as_system_user
  88     if block_given?
  89       user_was = Thread.current[:user]
  90       Thread.current[:user] = system_user
  91       begin
  92         yield
  93       ensure
  94         Thread.current[:user] = user_was
  95       end
  96     else
  97       Thread.current[:user] = system_user
  98     end
  99   end
 100 end