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