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

   1 class Arvados::V1::SchemaController < ApplicationController
   2   skip_before_filter :find_object_by_uuid
   3   skip_before_filter :require_auth_scope_all
   4
   5   def show
   6     classes = Rails.cache.fetch 'arvados_v1_schema' do
   7       Rails.application.eager_load!
   8       classes = {}
   9       ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
  10         classes[k] = k.columns.collect do |col|
  11           if k.serialized_attributes.has_key? col.name
  12             { name: col.name,
  13               type: k.serialized_attributes[col.name].object_class.to_s }
  14           else
  15             { name: col.name,
  16               type: col.type }
  17           end
  18         end
  19       end
  20       classes
  21     end
  22     render json: classes
  23   end
  24
  25   def discovery_rest_description
  26     discovery = Rails.cache.fetch 'arvados_v1_rest_discovery' do
  27       Rails.application.eager_load!
  28       discovery = {
  29         kind: "discovery#restDescription",
  30         discoveryVersion: "v1",
  31         id: "arvados:v1",
  32         name: "arvados",
  33         version: "v1",
  34         revision: "20131114",
  35         generatedAt: Time.now.iso8601,
  36         title: "Arvados API",
  37         description: "The API to interact with Arvados.",
  38         documentationLink: "https://redmine.clinicalfuture.com/projects/arvados/",
  39         protocol: "rest",
  40         baseUrl: root_url + "/arvados/v1/",
  41         basePath: "/arvados/v1/",
  42         rootUrl: root_url,
  43         servicePath: "arvados/v1/",
  44         batchPath: "batch",
  45         parameters: {
  46           alt: {
  47             type: "string",
  48             description: "Data format for the response.",
  49             default: "json",
  50             enum: [
  51                    "json"
  52                   ],
  53             enumDescriptions: [
  54                                "Responses with Content-Type of application/json"
  55                               ],
  56             location: "query"
  57           },
  58           fields: {
  59             type: "string",
  60             description: "Selector specifying which fields to include in a partial response.",
  61             location: "query"
  62           },
  63           key: {
  64             type: "string",
  65             description: "API key. Your API key identifies your project and provides you with API access, quota, and reports. Required unless you provide an OAuth 2.0 token.",
  66             location: "query"
  67           },
  68           oauth_token: {
  69             type: "string",
  70             description: "OAuth 2.0 token for the current user.",
  71             location: "query"
  72           }
  73         },
  74         auth: {
  75           oauth2: {
  76             scopes: {
  77               "https://api.clinicalfuture.com/auth/arvados" => {
  78                 description: "View and manage objects"
  79               },
  80               "https://api.clinicalfuture.com/auth/arvados.readonly" => {
  81                 description: "View objects"
  82               }
  83             }
  84           }
  85         },
  86         schemas: {},
  87         resources: {}
  88       }
  89
  90       ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
  91         begin
  92           ctl_class = "Arvados::V1::#{k.to_s.pluralize}Controller".constantize
  93         rescue
  94           # No controller -> no discovery.
  95           next
  96         end
  97         object_properties = {}
  98         k.columns.
  99           select { |col| col.name != 'id' }.
 100           collect do |col|
 101           if k.serialized_attributes.has_key? col.name
 102             object_properties[col.name] = {
 103               type: k.serialized_attributes[col.name].object_class.to_s
 104             }
 105           else
 106             object_properties[col.name] = {
 107               type: col.type
 108             }
 109           end
 110         end
 111         discovery[:schemas][k.to_s + 'List'] = {
 112           id: k.to_s + 'List',
 113           description: k.to_s + ' list',
 114           type: "object",
 115           properties: {
 116             kind: {
 117               type: "string",
 118               description: "Object type. Always arvados##{k.to_s.camelcase(:lower)}List.",
 119               default: "arvados##{k.to_s.camelcase(:lower)}List"
 120             },
 121             etag: {
 122               type: "string",
 123               description: "List version."
 124             },
 125             items: {
 126               type: "array",
 127               description: "The list of #{k.to_s.pluralize}.",
 128               items: {
 129                 "$ref" => k.to_s
 130               }
 131             },
 132             next_link: {
 133               type: "string",
 134               description: "A link to the next page of #{k.to_s.pluralize}."
 135             },
 136             next_page_token: {
 137               type: "string",
 138               description: "The page token for the next page of #{k.to_s.pluralize}."
 139             },
 140             selfLink: {
 141               type: "string",
 142               description: "A link back to this list."
 143             }
 144           }
 145         }
 146         discovery[:schemas][k.to_s] = {
 147           id: k.to_s,
 148           description: k.to_s,
 149           type: "object",
 150           properties: {
 151             uuid: {
 152               type: "string",
 153               description: "Object ID."
 154             },
 155             etag: {
 156               type: "string",
 157               description: "Object version."
 158             }
 159           }.merge(object_properties)
 160         }
 161         discovery[:resources][k.to_s.underscore.pluralize] = {
 162           methods: {
 163             get: {
 164               id: "arvados.#{k.to_s.underscore.pluralize}.get",
 165               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 166               httpMethod: "GET",
 167               description: "Gets a #{k.to_s}'s metadata by UUID.",
 168               parameters: {
 169                 uuid: {
 170                   type: "string",
 171                   description: "The UUID of the #{k.to_s} in question.",
 172                   required: true,
 173                   location: "path"
 174                 }
 175               },
 176               parameterOrder: [
 177                                "uuid"
 178                               ],
 179               response: {
 180                 "$ref" => k.to_s
 181               },
 182               scopes: [
 183                        "https://api.clinicalfuture.com/auth/arvados",
 184                        "https://api.clinicalfuture.com/auth/arvados.readonly"
 185                       ]
 186             },
 187             list: {
 188               id: "arvados.#{k.to_s.underscore.pluralize}.list",
 189               path: k.to_s.underscore.pluralize,
 190               httpMethod: "GET",
 191               description: "List #{k.to_s.underscore.pluralize}.",
 192               parameters: {
 193                 limit: {
 194                   type: "integer",
 195                   description: "Maximum number of #{k.to_s.underscore.pluralize} to return.",
 196                   default: 100,
 197                   format: "int32",
 198                   minimum: 0,
 199                   location: "query"
 200                 },
 201                 pageToken: {
 202                   type: "string",
 203                   description: "Page token.",
 204                   location: "query"
 205                 },
 206                 q: {
 207                   type: "string",
 208                   description: "Query string for searching #{k.to_s.underscore.pluralize}.",
 209                   location: "query"
 210                 },
 211                 where: {
 212                   type: "object",
 213                   description: "Conditions for filtering #{k.to_s.underscore.pluralize}.",
 214                   location: "query"
 215                 },
 216                 order: {
 217                   type: "string",
 218                   description: "Order in which to return matching #{k.to_s.underscore.pluralize}.",
 219                   location: "query"
 220                 }
 221               },
 222               response: {
 223                 "$ref" => "#{k.to_s}List"
 224               },
 225               scopes: [
 226                        "https://api.clinicalfuture.com/auth/arvados",
 227                        "https://api.clinicalfuture.com/auth/arvados.readonly"
 228                       ]
 229             },
 230             create: {
 231               id: "arvados.#{k.to_s.underscore.pluralize}.create",
 232               path: "#{k.to_s.underscore.pluralize}",
 233               httpMethod: "POST",
 234               description: "Create a new #{k.to_s}.",
 235               parameters: {
 236                 k.to_s.underscore => {
 237                   type: "object",
 238                   required: false,
 239                   location: "query",
 240                   properties: object_properties
 241                 }
 242               },
 243               request: {
 244                 required: false,
 245                 properties: {
 246                   k.to_s => {
 247                     "$ref" => k.to_s
 248                   }
 249                 }
 250               },
 251               response: {
 252                 "$ref" => k.to_s
 253               },
 254               scopes: [
 255                        "https://api.clinicalfuture.com/auth/arvados"
 256                       ]
 257             },
 258             update: {
 259               id: "arvados.#{k.to_s.underscore.pluralize}.update",
 260               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 261               httpMethod: "PUT",
 262               description: "Update attributes of an existing #{k.to_s}.",
 263               parameters: {
 264                 uuid: {
 265                   type: "string",
 266                   description: "The UUID of the #{k.to_s} in question.",
 267                   required: true,
 268                   location: "path"
 269                 },
 270                 k.to_s.underscore => {
 271                   type: "object",
 272                   required: false,
 273                   location: "query",
 274                   properties: object_properties
 275                 }
 276               },
 277               request: {
 278                 required: false,
 279                 properties: {
 280                   k.to_s => {
 281                     "$ref" => k.to_s
 282                   }
 283                 }
 284               },
 285               response: {
 286                 "$ref" => k.to_s
 287               },
 288               scopes: [
 289                        "https://api.clinicalfuture.com/auth/arvados"
 290                       ]
 291             },
 292             delete: {
 293               id: "arvados.#{k.to_s.underscore.pluralize}.delete",
 294               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 295               httpMethod: "DELETE",
 296               description: "Delete an existing #{k.to_s}.",
 297               parameters: {
 298                 uuid: {
 299                   type: "string",
 300                   description: "The UUID of the #{k.to_s} in question.",
 301                   required: true,
 302                   location: "path"
 303                 }
 304               },
 305               response: {
 306                 "$ref" => k.to_s
 307               },
 308               scopes: [
 309                        "https://api.clinicalfuture.com/auth/arvados"
 310                       ]
 311             }
 312           }
 313         }
 314         # Check for Rails routes that don't match the usual actions
 315         # listed above
 316         d_methods = discovery[:resources][k.to_s.underscore.pluralize][:methods]
 317         Rails.application.routes.routes.each do |route|
 318           action = route.defaults[:action]
 319           httpMethod = ['GET', 'POST', 'PUT', 'DELETE'].map { |method|
 320             method if route.verb.match(method)
 321           }.compact.first
 322           if httpMethod and
 323               route.defaults[:controller] == 'arvados/v1/' + k.to_s.underscore.pluralize and
 324               !d_methods[action.to_sym] and
 325               ctl_class.action_methods.include? action
 326             method = {
 327               id: "arvados.#{k.to_s.underscore.pluralize}.#{action}",
 328               path: route.path.spec.to_s.sub('/arvados/v1/','').sub('(.:format)','').sub(/:(uu)?id/,'{uuid}'),
 329               httpMethod: httpMethod,
 330               description: "#{route.defaults[:action]} #{k.to_s.underscore.pluralize}",
 331               parameters: {},
 332               response: {
 333                 "$ref" => (action == 'index' ? "#{k.to_s}List" : k.to_s)
 334               },
 335               scopes: [
 336                        "https://api.clinicalfuture.com/auth/arvados"
 337                       ]
 338             }
 339             route.segment_keys.each do |key|
 340               if key != :format
 341                 key = :uuid if key == :id
 342                 method[:parameters][key] = {
 343                   type: "string",
 344                   description: "",
 345                   required: true,
 346                   location: "path"
 347                 }
 348               end
 349             end
 350             if ctl_class.respond_to? "_#{action}_requires_parameters".to_sym
 351               ctl_class.send("_#{action}_requires_parameters".to_sym).each do |k, v|
 352                 if v.is_a? Hash
 353                   method[:parameters][k] = v
 354                 else
 355                   method[:parameters][k] = {}
 356                 end
 357                 method[:parameters][k][:type] ||= 'string'
 358                 method[:parameters][k][:description] ||= ''
 359                 method[:parameters][k][:location] = (route.segment_keys.include?(k) ? 'path' : 'query')
 360                 if method[:parameters][k][:required].nil?
 361                   method[:parameters][k][:required] = v != false
 362                 end
 363               end
 364             end
 365             d_methods[route.defaults[:action].to_sym] = method
 366           end
 367         end
 368       end
 369       discovery
 370     end
 371     render json: discovery
 372   end
 373 end