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

   1 class Arvados::V1::SchemaController < ApplicationController
   2   skip_before_filter :find_objects_for_index
   3   skip_before_filter :find_object_by_uuid
   4   skip_before_filter :render_404_if_no_object
   5   skip_before_filter :require_auth_scope
   6
   7   def index
   8     expires_in 24.hours, public: true
   9     discovery = Rails.cache.fetch 'arvados_v1_rest_discovery' do
  10       Rails.application.eager_load!
  11       discovery = {
  12         kind: "discovery#restDescription",
  13         discoveryVersion: "v1",
  14         id: "arvados:v1",
  15         name: "arvados",
  16         version: "v1",
  17         revision: "20131114",
  18         source_version: (Rails.application.config.source_version ? Rails.application.config.source_version : "No version information available") + (Rails.application.config.local_modified ? Rails.application.config.local_modified.to_s : ''),
  19         generatedAt: Time.now.iso8601,
  20         title: "Arvados API",
  21         description: "The API to interact with Arvados.",
  22         documentationLink: "http://doc.arvados.org/api/index.html",
  23         protocol: "rest",
  24         baseUrl: root_url + "arvados/v1/",
  25         basePath: "/arvados/v1/",
  26         rootUrl: root_url,
  27         servicePath: "arvados/v1/",
  28         batchPath: "batch",
  29         defaultTrashLifetime: Rails.application.config.default_trash_lifetime,
  30         parameters: {
  31           alt: {
  32             type: "string",
  33             description: "Data format for the response.",
  34             default: "json",
  35             enum: [
  36                    "json"
  37                   ],
  38             enumDescriptions: [
  39                                "Responses with Content-Type of application/json"
  40                               ],
  41             location: "query"
  42           },
  43           fields: {
  44             type: "string",
  45             description: "Selector specifying which fields to include in a partial response.",
  46             location: "query"
  47           },
  48           key: {
  49             type: "string",
  50             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.",
  51             location: "query"
  52           },
  53           oauth_token: {
  54             type: "string",
  55             description: "OAuth 2.0 token for the current user.",
  56             location: "query"
  57           }
  58         },
  59         auth: {
  60           oauth2: {
  61             scopes: {
  62               "https://api.curoverse.com/auth/arvados" => {
  63                 description: "View and manage objects"
  64               },
  65               "https://api.curoverse.com/auth/arvados.readonly" => {
  66                 description: "View objects"
  67               }
  68             }
  69           }
  70         },
  71         schemas: {},
  72         resources: {}
  73       }
  74
  75       if Rails.application.config.websocket_address
  76         discovery[:websocketUrl] = Rails.application.config.websocket_address
  77       elsif ENV['ARVADOS_WEBSOCKETS']
  78         discovery[:websocketUrl] = (root_url.sub /^http/, 'ws') + "websocket"
  79       end
  80
  81       ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
  82         begin
  83           ctl_class = "Arvados::V1::#{k.to_s.pluralize}Controller".constantize
  84         rescue
  85           # No controller -> no discovery.
  86           next
  87         end
  88         object_properties = {}
  89         k.columns.
  90           select { |col| col.name != 'id' }.
  91           collect do |col|
  92           if k.serialized_attributes.has_key? col.name
  93             object_properties[col.name] = {
  94               type: k.serialized_attributes[col.name].object_class.to_s
  95             }
  96           else
  97             object_properties[col.name] = {
  98               type: col.type
  99             }
 100           end
 101         end
 102         discovery[:schemas][k.to_s + 'List'] = {
 103           id: k.to_s + 'List',
 104           description: k.to_s + ' list',
 105           type: "object",
 106           properties: {
 107             kind: {
 108               type: "string",
 109               description: "Object type. Always arvados##{k.to_s.camelcase(:lower)}List.",
 110               default: "arvados##{k.to_s.camelcase(:lower)}List"
 111             },
 112             etag: {
 113               type: "string",
 114               description: "List version."
 115             },
 116             items: {
 117               type: "array",
 118               description: "The list of #{k.to_s.pluralize}.",
 119               items: {
 120                 "$ref" => k.to_s
 121               }
 122             },
 123             next_link: {
 124               type: "string",
 125               description: "A link to the next page of #{k.to_s.pluralize}."
 126             },
 127             next_page_token: {
 128               type: "string",
 129               description: "The page token for the next page of #{k.to_s.pluralize}."
 130             },
 131             selfLink: {
 132               type: "string",
 133               description: "A link back to this list."
 134             }
 135           }
 136         }
 137         discovery[:schemas][k.to_s] = {
 138           id: k.to_s,
 139           description: k.to_s,
 140           type: "object",
 141           uuidPrefix: (k.respond_to?(:uuid_prefix) ? k.uuid_prefix : nil),
 142           properties: {
 143             uuid: {
 144               type: "string",
 145               description: "Object ID."
 146             },
 147             etag: {
 148               type: "string",
 149               description: "Object version."
 150             }
 151           }.merge(object_properties)
 152         }
 153         discovery[:resources][k.to_s.underscore.pluralize] = {
 154           methods: {
 155             get: {
 156               id: "arvados.#{k.to_s.underscore.pluralize}.get",
 157               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 158               httpMethod: "GET",
 159               description: "Gets a #{k.to_s}'s metadata by UUID.",
 160               parameters: {
 161                 uuid: {
 162                   type: "string",
 163                   description: "The UUID of the #{k.to_s} in question.",
 164                   required: true,
 165                   location: "path"
 166                 }
 167               },
 168               parameterOrder: [
 169                                "uuid"
 170                               ],
 171               response: {
 172                 "$ref" => k.to_s
 173               },
 174               scopes: [
 175                        "https://api.curoverse.com/auth/arvados",
 176                        "https://api.curoverse.com/auth/arvados.readonly"
 177                       ]
 178             },
 179             list: {
 180               id: "arvados.#{k.to_s.underscore.pluralize}.list",
 181               path: k.to_s.underscore.pluralize,
 182               httpMethod: "GET",
 183               description:
 184                  %|List #{k.to_s.pluralize}.
 185
 186                    The <code>list</code> method returns a
 187                    <a href="/api/resources.html">resource list</a> of
 188                    matching #{k.to_s.pluralize}. For example:
 189
 190                    <pre>
 191                    {
 192                     "kind":"arvados##{k.to_s.camelcase(:lower)}List",
 193                     "etag":"",
 194                     "self_link":"",
 195                     "next_page_token":"",
 196                     "next_link":"",
 197                     "items":[
 198                        ...
 199                     ],
 200                     "items_available":745,
 201                     "_profile":{
 202                      "request_time":0.157236317
 203                     }
 204                     </pre>|,
 205               parameters: {
 206                 limit: {
 207                   type: "integer",
 208                   description: "Maximum number of #{k.to_s.underscore.pluralize} to return.",
 209                   default: "100",
 210                   format: "int32",
 211                   minimum: "0",
 212                   location: "query",
 213                 },
 214                 offset: {
 215                   type: "integer",
 216                   description: "Number of #{k.to_s.underscore.pluralize} to skip before first returned record.",
 217                   default: "0",
 218                   format: "int32",
 219                   minimum: "0",
 220                   location: "query",
 221                   },
 222                 filters: {
 223                   type: "array",
 224                   description: "Conditions for filtering #{k.to_s.underscore.pluralize}.",
 225                   location: "query"
 226                 },
 227                 where: {
 228                   type: "object",
 229                   description: "Conditions for filtering #{k.to_s.underscore.pluralize}. (Deprecated. Use filters instead.)",
 230                   location: "query"
 231                 },
 232                 order: {
 233                   type: "string",
 234                   description: "Order in which to return matching #{k.to_s.underscore.pluralize}.",
 235                   location: "query"
 236                 },
 237                 select: {
 238                   type: "array",
 239                   description: "Select which fields to return",
 240                   location: "query"
 241                 },
 242                 distinct: {
 243                   type: "boolean",
 244                   description: "Return each distinct object",
 245                   location: "query"
 246                 }
 247               },
 248               response: {
 249                 "$ref" => "#{k.to_s}List"
 250               },
 251               scopes: [
 252                        "https://api.curoverse.com/auth/arvados",
 253                        "https://api.curoverse.com/auth/arvados.readonly"
 254                       ]
 255             },
 256             create: {
 257               id: "arvados.#{k.to_s.underscore.pluralize}.create",
 258               path: "#{k.to_s.underscore.pluralize}",
 259               httpMethod: "POST",
 260               description: "Create a new #{k.to_s}.",
 261               parameters: {},
 262               request: {
 263                 required: true,
 264                 properties: {
 265                   k.to_s.underscore => {
 266                     "$ref" => k.to_s
 267                   }
 268                 }
 269               },
 270               response: {
 271                 "$ref" => k.to_s
 272               },
 273               scopes: [
 274                        "https://api.curoverse.com/auth/arvados"
 275                       ]
 276             },
 277             update: {
 278               id: "arvados.#{k.to_s.underscore.pluralize}.update",
 279               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 280               httpMethod: "PUT",
 281               description: "Update attributes of an existing #{k.to_s}.",
 282               parameters: {
 283                 uuid: {
 284                   type: "string",
 285                   description: "The UUID of the #{k.to_s} in question.",
 286                   required: true,
 287                   location: "path"
 288                 }
 289               },
 290               request: {
 291                 required: true,
 292                 properties: {
 293                   k.to_s.underscore => {
 294                     "$ref" => k.to_s
 295                   }
 296                 }
 297               },
 298               response: {
 299                 "$ref" => k.to_s
 300               },
 301               scopes: [
 302                        "https://api.curoverse.com/auth/arvados"
 303                       ]
 304             },
 305             delete: {
 306               id: "arvados.#{k.to_s.underscore.pluralize}.delete",
 307               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 308               httpMethod: "DELETE",
 309               description: "Delete an existing #{k.to_s}.",
 310               parameters: {
 311                 uuid: {
 312                   type: "string",
 313                   description: "The UUID of the #{k.to_s} in question.",
 314                   required: true,
 315                   location: "path"
 316                 }
 317               },
 318               response: {
 319                 "$ref" => k.to_s
 320               },
 321               scopes: [
 322                        "https://api.curoverse.com/auth/arvados"
 323                       ]
 324             }
 325           }
 326         }
 327         # Check for Rails routes that don't match the usual actions
 328         # listed above
 329         d_methods = discovery[:resources][k.to_s.underscore.pluralize][:methods]
 330         Rails.application.routes.routes.each do |route|
 331           action = route.defaults[:action]
 332           httpMethod = ['GET', 'POST', 'PUT', 'DELETE'].map { |method|
 333             method if route.verb.match(method)
 334           }.compact.first
 335           if httpMethod and
 336               route.defaults[:controller] == 'arvados/v1/' + k.to_s.underscore.pluralize and
 337               ctl_class.action_methods.include? action
 338             if !d_methods[action.to_sym]
 339               method = {
 340                 id: "arvados.#{k.to_s.underscore.pluralize}.#{action}",
 341                 path: route.path.spec.to_s.sub('/arvados/v1/','').sub('(.:format)','').sub(/:(uu)?id/,'{uuid}'),
 342                 httpMethod: httpMethod,
 343                 description: "#{action} #{k.to_s.underscore.pluralize}",
 344                 parameters: {},
 345                 response: {
 346                   "$ref" => (action == 'index' ? "#{k.to_s}List" : k.to_s)
 347                 },
 348                 scopes: [
 349                          "https://api.curoverse.com/auth/arvados"
 350                         ]
 351               }
 352               route.segment_keys.each do |key|
 353                 if key != :format
 354                   key = :uuid if key == :id
 355                   method[:parameters][key] = {
 356                     type: "string",
 357                     description: "",
 358                     required: true,
 359                     location: "path"
 360                   }
 361                 end
 362               end
 363             else
 364               # We already built a generic method description, but we
 365               # might find some more required parameters through
 366               # introspection.
 367               method = d_methods[action.to_sym]
 368             end
 369             if ctl_class.respond_to? "_#{action}_requires_parameters".to_sym
 370               ctl_class.send("_#{action}_requires_parameters".to_sym).each do |k, v|
 371                 if v.is_a? Hash
 372                   method[:parameters][k] = v
 373                 else
 374                   method[:parameters][k] = {}
 375                 end
 376                 if !method[:parameters][k][:default].nil?
 377                   # The JAVA SDK is sensitive to all values being strings
 378                   method[:parameters][k][:default] = method[:parameters][k][:default].to_s
 379                 end
 380                 method[:parameters][k][:type] ||= 'string'
 381                 method[:parameters][k][:description] ||= ''
 382                 method[:parameters][k][:location] = (route.segment_keys.include?(k) ? 'path' : 'query')
 383                 if method[:parameters][k][:required].nil?
 384                   method[:parameters][k][:required] = v != false
 385                 end
 386               end
 387             end
 388             d_methods[action.to_sym] = method
 389           end
 390         end
 391       end
 392       discovery
 393     end
 394     render json: discovery
 395   end
 396 end