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               uuid: {
   7                 type: 'string', required: false, default: nil
   8               },
   9               include_linked: {
  10                 type: 'boolean', required: false, default: false
  11               },
  12             })
  13   end
  14
  15   def render_404_if_no_object
  16     if params[:action] == 'contents'
  17       if !params[:uuid]
  18         # OK!
  19         @object = nil
  20         true
  21       elsif @object
  22         # Project group
  23         true
  24       elsif (@object = User.where(uuid: params[:uuid]).first)
  25         # "Home" pseudo-project
  26         true
  27       else
  28         super
  29       end
  30     else
  31       super
  32     end
  33   end
  34
  35   def contents
  36     # Set @objects:
  37     load_searchable_objects(owner_uuid: @object.andand.uuid,
  38                             include_linked: params[:include_linked])
  39     sql = 'link_class=? and head_uuid in (?)'
  40     sql_params = ['name', @objects.collect(&:uuid)]
  41     if @object
  42       sql += ' and tail_uuid=?'
  43       sql_params << @object.uuid
  44     end
  45     @links = Link.where sql, *sql_params
  46     @object_list = {
  47       :kind  => "arvados#objectList",
  48       :etag => "",
  49       :self_link => "",
  50       :links => @links.as_api_response(nil),
  51       :offset => @offset,
  52       :limit => @limit,
  53       :items_available => @items_available,
  54       :items => @objects.as_api_response(nil)
  55     }
  56     render json: @object_list
  57   end
  58
  59   protected
  60
  61   def load_searchable_objects opts
  62     all_objects = []
  63     @items_available = 0
  64
  65     # Trick apply_where_limit_order_params into applying suitable
  66     # per-table values. *_all are the real ones we'll apply to the
  67     # aggregate set.
  68     limit_all = @limit
  69     offset_all = @offset
  70     @orders = []
  71
  72     [Group,
  73      Job, PipelineInstance, PipelineTemplate,
  74      Collection,
  75      Human, Specimen, Trait].each do |klass|
  76       @objects = klass.readable_by(*@read_users)
  77       if klass == Group
  78         @objects = @objects.where(group_class: 'project')
  79       end
  80       if opts[:owner_uuid]
  81         conds = []
  82         cond_params = []
  83         conds << "#{klass.table_name}.owner_uuid = ?"
  84         cond_params << opts[:owner_uuid]
  85         if opts[:include_linked]
  86           haslink = "#{klass.table_name}.uuid IN (SELECT head_uuid FROM links WHERE link_class=#{klass.sanitize 'name'}"
  87           haslink += " AND links.tail_uuid=#{klass.sanitize opts[:owner_uuid]}"
  88           haslink += ")"
  89           conds << haslink
  90         end
  91         if conds.any?
  92           cond_sql = '(' + conds.join(') OR (') + ')'
  93           @objects = @objects.where(cond_sql, *cond_params)
  94         end
  95       end
  96
  97       @objects = @objects.order("#{klass.table_name}.uuid")
  98       @limit = limit_all - all_objects.count
  99       apply_where_limit_order_params
 100       klass_items_available = @objects.
 101         except(:limit).except(:offset).
 102         count(:id, distinct: true)
 103       @items_available += klass_items_available
 104       @offset = [@offset - klass_items_available, 0].max
 105
 106       all_objects += @objects.to_a
 107     end
 108
 109     @objects = all_objects
 110     @limit = limit_all
 111     @offset = offset_all
 112   end
 113
 114 end