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

   1 class Arvados::V1::GroupsController < ApplicationController
   2
   3   def self._contents_requires_parameters
   4     _index_requires_parameters.
   5       merge({
   6               include_linked: {
   7                 type: 'boolean', required: false, default: false
   8               },
   9             })
  10   end
  11
  12   def render_404_if_no_object
  13     if params[:action] == 'contents' and !params[:uuid]
  14       # OK!
  15       @object = nil
  16     else
  17       super
  18     end
  19   end
  20
  21   def contents
  22     # Set @objects:
  23     load_searchable_objects(owner_uuid: @object.andand.uuid, include_linked: params[:include_linked])
  24
  25     @links = Link.where('link_class=? and tail_uuid=?'\
  26                         ' and head_uuid in (?)',
  27                         'name',
  28                         @object.uuid,
  29                         @objects.collect(&:uuid))
  30     @object_list = {
  31       :kind  => "arvados#objectList",
  32       :etag => "",
  33       :self_link => "",
  34       :links => @links.as_api_response(nil),
  35       :offset => @offset,
  36       :limit => @limit,
  37       :items_available => @items_available,
  38       :items => @objects.as_api_response(nil)
  39     }
  40     render json: @object_list
  41   end
  42
  43   protected
  44
  45   def load_searchable_objects opts
  46     all_objects = []
  47     @items_available = 0
  48
  49     # Trick apply_where_limit_order_params into applying suitable
  50     # per-table values. *_all are the real ones we'll apply to the
  51     # aggregate set.
  52     limit_all = @limit
  53     offset_all = @offset
  54     @orders = []
  55
  56     [Group,
  57      Job, PipelineInstance, PipelineTemplate,
  58      Collection,
  59      Human, Specimen, Trait].each do |klass|
  60       @objects = klass.readable_by(*@read_users)
  61       conds = []
  62       cond_params = []
  63       if opts[:owner_uuid]
  64         conds << "#{klass.table_name}.owner_uuid = ?"
  65         cond_params << opts[:owner_uuid]
  66       end
  67       if opts[:include_linked]
  68         conds << "#{klass.table_name}.uuid IN (SELECT head_uuid FROM links WHERE link_class=#{klass.sanitize 'name'} AND links.tail_uuid=#{klass.sanitize @object.uuid})"
  69       end
  70       if conds.any?
  71         cond_sql = '(' + conds.join(') OR (') + ')'
  72         @objects = @objects.where(cond_sql, *cond_params)
  73       end
  74       @objects = @objects.order("#{klass.table_name}.uuid")
  75       @limit = limit_all - all_objects.count
  76       apply_where_limit_order_params
  77       klass_items_available = @objects.
  78         except(:limit).except(:offset).
  79         count(:id, distinct: true)
  80       @items_available += klass_items_available
  81       @offset = [@offset - klass_items_available, 0].max
  82
  83       all_objects += @objects.to_a
  84     end
  85
  86     @objects = all_objects
  87     @limit = limit_all
  88     @offset = offset_all
  89   end
  90
  91 end