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 :render_404_if_no_object
   4   skip_before_filter :require_auth_scope_all
   5
   6   def show
   7     classes = Rails.cache.fetch 'arvados_v1_schema' do
   8       Rails.application.eager_load!
   9       classes = {}
  10       ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
  11         classes[k] = k.columns.collect do |col|
  12           if k.serialized_attributes.has_key? col.name
  13             { name: col.name,
  14               type: k.serialized_attributes[col.name].object_class.to_s }
  15           else
  16             { name: col.name,
  17               type: col.type }
  18           end
  19         end
  20       end
  21       classes
  22     end
  23     render json: classes
  24   end
  25
  26   def discovery_rest_description
  27     expires_in 24.hours, public: true
  28     discovery = Rails.cache.fetch 'arvados_v1_rest_discovery' do
  29       Rails.application.eager_load!
  30       discovery = {
  31         kind: "discovery#restDescription",
  32         discoveryVersion: "v1",
  33         id: "arvados:v1",
  34         name: "arvados",
  35         version: "v1",
  36         revision: "20131114",
  37         generatedAt: Time.now.iso8601,
  38         title: "Arvados API",
  39         description: "The API to interact with Arvados.",
  40         documentationLink: "https://redmine.clinicalfuture.com/projects/arvados/",
  41         protocol: "rest",
  42         baseUrl: root_url + "/arvados/v1/",
  43         basePath: "/arvados/v1/",
  44         rootUrl: root_url,
  45         servicePath: "arvados/v1/",
  46         batchPath: "batch",
  47         parameters: {
  48           alt: {
  49             type: "string",
  50             description: "Data format for the response.",
  51             default: "json",
  52             enum: [
  53                    "json"
  54                   ],
  55             enumDescriptions: [
  56                                "Responses with Content-Type of application/json"
  57                               ],
  58             location: "query"
  59           },
  60           fields: {
  61             type: "string",
  62             description: "Selector specifying which fields to include in a partial response.",
  63             location: "query"
  64           },
  65           key: {
  66             type: "string",
  67             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.",
  68             location: "query"
  69           },
  70           oauth_token: {
  71             type: "string",
  72             description: "OAuth 2.0 token for the current user.",
  73             location: "query"
  74           }
  75         },
  76         auth: {
  77           oauth2: {
  78             scopes: {
  79               "https://api.clinicalfuture.com/auth/arvados" => {
  80                 description: "View and manage objects"
  81               },
  82               "https://api.clinicalfuture.com/auth/arvados.readonly" => {
  83                 description: "View objects"
  84               }
  85             }
  86           }
  87         },
  88         schemas: {},
  89         resources: {}
  90       }
  91
  92       ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
  93         begin
  94           ctl_class = "Arvados::V1::#{k.to_s.pluralize}Controller".constantize
  95         rescue
  96           # No controller -> no discovery.
  97           next
  98         end
  99         object_properties = {}
 100         k.columns.
 101           select { |col| col.name != 'id' }.
 102           collect do |col|
 103           if k.serialized_attributes.has_key? col.name
 104             object_properties[col.name] = {
 105               type: k.serialized_attributes[col.name].object_class.to_s
 106             }
 107           else
 108             object_properties[col.name] = {
 109               type: col.type
 110             }
 111           end
 112         end
 113         discovery[:schemas][k.to_s + 'List'] = {
 114           id: k.to_s + 'List',
 115           description: k.to_s + ' list',
 116           type: "object",
 117           properties: {
 118             kind: {
 119               type: "string",
 120               description: "Object type. Always arvados##{k.to_s.camelcase(:lower)}List.",
 121               default: "arvados##{k.to_s.camelcase(:lower)}List"
 122             },
 123             etag: {
 124               type: "string",
 125               description: "List version."
 126             },
 127             items: {
 128               type: "array",
 129               description: "The list of #{k.to_s.pluralize}.",
 130               items: {
 131                 "$ref" => k.to_s
 132               }
 133             },
 134             next_link: {
 135               type: "string",
 136               description: "A link to the next page of #{k.to_s.pluralize}."
 137             },
 138             next_page_token: {
 139               type: "string",
 140               description: "The page token for the next page of #{k.to_s.pluralize}."
 141             },
 142             selfLink: {
 143               type: "string",
 144               description: "A link back to this list."
 145             }
 146           }
 147         }
 148         discovery[:schemas][k.to_s] = {
 149           id: k.to_s,
 150           description: k.to_s,
 151           type: "object",
 152           uuidPrefix: (k.respond_to?(:uuid_prefix) ? k.uuid_prefix : nil),
 153           properties: {
 154             uuid: {
 155               type: "string",
 156               description: "Object ID."
 157             },
 158             etag: {
 159               type: "string",
 160               description: "Object version."
 161             }
 162           }.merge(object_properties)
 163         }
 164         discovery[:resources][k.to_s.underscore.pluralize] = {
 165           methods: {
 166             get: {
 167               id: "arvados.#{k.to_s.underscore.pluralize}.get",
 168               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 169               httpMethod: "GET",
 170               description: "Gets a #{k.to_s}'s metadata by UUID.",
 171               parameters: {
 172                 uuid: {
 173                   type: "string",
 174                   description: "The UUID of the #{k.to_s} in question.",
 175                   required: true,
 176                   location: "path"
 177                 }
 178               },
 179               parameterOrder: [
 180                                "uuid"
 181                               ],
 182               response: {
 183                 "$ref" => k.to_s
 184               },
 185               scopes: [
 186                        "https://api.clinicalfuture.com/auth/arvados",
 187                        "https://api.clinicalfuture.com/auth/arvados.readonly"
 188                       ]
 189             },
 190             list: {
 191               id: "arvados.#{k.to_s.underscore.pluralize}.list",
 192               path: k.to_s.underscore.pluralize,
 193               httpMethod: "GET",
 194               description:
 195                  %|List #{k.to_s.pluralize}.
 196
 197                    The <code>list</code> method returns a
 198                    <a href="/api/resources.html">resource list</a> of
 199                    matching #{k.to_s.pluralize}. For example:
 200
 201                    <pre>
 202                    {
 203                     "kind":"arvados##{k.to_s.camelcase(:lower)}List",
 204                     "etag":"",
 205                     "self_link":"",
 206                     "next_page_token":"",
 207                     "next_link":"",
 208                     "items":[
 209                        ...
 210                     ],
 211                     "items_available":745,
 212                     "_profile":{
 213                      "request_time":0.157236317
 214                     }
 215                     </pre>|,
 216               parameters: {
 217                 limit: {
 218                   type: "integer",
 219                   description: "Maximum number of #{k.to_s.underscore.pluralize} to return.",
 220                   default: 100,
 221                   format: "int32",
 222                   minimum: 0,
 223                   location: "query",
 224                 },
 225                 where: {
 226                   type: "object",
 227                   description: "Conditions for filtering #{k.to_s.underscore.pluralize}.",
 228                   location: "query"
 229                 },
 230                 order: {
 231                   type: "string",
 232                   description: "Order in which to return matching #{k.to_s.underscore.pluralize}.",
 233                   location: "query"
 234                 }
 235               },
 236               response: {
 237                 "$ref" => "#{k.to_s}List"
 238               },
 239               scopes: [
 240                        "https://api.clinicalfuture.com/auth/arvados",
 241                        "https://api.clinicalfuture.com/auth/arvados.readonly"
 242                       ]
 243             },
 244             create: {
 245               id: "arvados.#{k.to_s.underscore.pluralize}.create",
 246               path: "#{k.to_s.underscore.pluralize}",
 247               httpMethod: "POST",
 248               description: "Create a new #{k.to_s}.",
 249               parameters: {},
 250               request: {
 251                 required: true,
 252                 properties: {
 253                   k.to_s.underscore => {
 254                     "$ref" => k.to_s
 255                   }
 256                 }
 257               },
 258               response: {
 259                 "$ref" => k.to_s
 260               },
 261               scopes: [
 262                        "https://api.clinicalfuture.com/auth/arvados"
 263                       ]
 264             },
 265             update: {
 266               id: "arvados.#{k.to_s.underscore.pluralize}.update",
 267               path: "#{k.to_s.underscore.pluralize}/{uuid}",
 268               httpMethod: "PUT",
 269               description: "Update attributes of an existing #{k.to_s}.",
 270               parameters: {
 271                 uuid: {
 272                   type: "string",
 273                   description: "The UUID of the #{k.to_s} in question.",
 274                   required: true,
 275                   location: "path"
 276                 }
 277               },
 278               request: {
 279                 required: true,
 280                 properties: {
 281                   k.to_s.underscore => {
 282                     "$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