1 # Copyright (C) The Arvados Authors. All rights reserved.
3 # SPDX-License-Identifier: AGPL-3.0
6 require 'request_error'
8 module ApiTemplateOverride
9 def allowed_to_render?(fieldset, field, model, options)
10 return false if !super
12 options[:select].include? field.to_s
19 class ActsAsApi::ApiTemplate
20 prepend ApiTemplateOverride
25 class ApplicationController < ActionController::Base
26 include ThemesForRails::ActionController
27 include CurrentApiClient
34 ERROR_ACTIONS = [:render_error, :render_not_found]
36 around_filter :set_current_request_id
37 before_filter :disable_api_methods
38 before_filter :set_cors_headers
39 before_filter :respond_with_json_by_default
40 before_filter :remote_ip
41 before_filter :load_read_auths
42 before_filter :require_auth_scope, except: ERROR_ACTIONS
44 before_filter :catch_redirect_hint
45 before_filter(:find_object_by_uuid,
46 except: [:index, :create] + ERROR_ACTIONS)
47 before_filter :load_required_parameters
48 before_filter :load_limit_offset_order_params, only: [:index, :contents]
49 before_filter :load_where_param, only: [:index, :contents]
50 before_filter :load_filters_param, only: [:index, :contents]
51 before_filter :find_objects_for_index, :only => :index
52 before_filter :reload_object_before_update, :only => :update
53 before_filter(:render_404_if_no_object,
54 except: [:index, :create] + ERROR_ACTIONS)
56 theme Rails.configuration.arvados_theme
58 attr_writer :resource_attrs
61 rescue_from(Exception,
62 ArvadosModel::PermissionDeniedError,
63 :with => :render_error)
64 rescue_from(ActiveRecord::RecordNotFound,
65 ActionController::RoutingError,
66 ActionController::UnknownController,
67 AbstractController::ActionNotFound,
68 :with => :render_not_found)
79 @response_resource_name = nil
83 def default_url_options
84 if Rails.configuration.host
85 {:host => Rails.configuration.host}
92 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
93 @objects.each(&:eager_load_associations)
99 send_json @object.as_api_response(nil, select: @select)
103 @object = model_class.new resource_attrs
105 if @object.respond_to?(:name) && params[:ensure_unique_name]
106 @object.save_with_unique_name!
115 attrs_to_update = resource_attrs.reject { |k,v|
116 [:kind, :etag, :href].index k
118 @object.update_attributes! attrs_to_update
127 def catch_redirect_hint
129 if params.has_key?('redirect_to') then
130 session[:redirect_to] = params[:redirect_to]
135 def render_404_if_no_object
136 render_not_found "Object not found" if !@object
140 logger.error e.inspect
141 if !e.is_a? RequestError and (e.respond_to? :backtrace and e.backtrace)
142 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
144 if (@object.respond_to? :errors and
145 @object.errors.andand.full_messages.andand.any?)
146 errors = @object.errors.full_messages
147 logger.error errors.inspect
151 status = e.respond_to?(:http_status) ? e.http_status : 422
152 send_error(*errors, status: status)
155 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
156 logger.error e.inspect
157 send_error("Path not found", status: 404)
162 def send_error(*args)
163 if args.last.is_a? Hash
168 err[:errors] ||= args
169 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
170 status = err.delete(:status) || 422
171 logger.error "Error #{err[:error_token]}: #{status}"
172 send_json err, status: status
175 def send_json response, opts={}
176 # The obvious render(json: ...) forces a slow JSON encoder. See
177 # #3021 and commit logs. Might be fixed in Rails 4.1.
179 text: SafeJSON.dump(response).html_safe,
180 content_type: 'application/json'
184 def find_objects_for_index
185 @objects ||= model_class.readable_by(*@read_users, {:include_trash => (params[:include_trash] || 'untrash' == action_name)})
186 apply_where_limit_order_params
189 def apply_filters model_class=nil
190 model_class ||= self.model_class
191 @objects = model_class.apply_filters(@objects, @filters)
194 def apply_where_limit_order_params model_class=nil
195 model_class ||= self.model_class
196 apply_filters model_class
198 ar_table_name = @objects.table_name
199 if @where.is_a? Hash and @where.any?
201 @where.each do |attr,value|
202 if attr.to_s == 'any'
203 if value.is_a?(Array) and
204 value.length == 2 and
205 value[0] == 'contains' then
207 model_class.searchable_columns('ilike').each do |column|
208 # Including owner_uuid in an "any column" search will
209 # probably just return a lot of false positives.
210 next if column == 'owner_uuid'
211 ilikes << "#{ar_table_name}.#{column} ilike ?"
212 conditions << "%#{value[1]}%"
215 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
218 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
219 model_class.columns.collect(&:name).index(attr.to_s)
221 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
223 elsif value.is_a? Array
224 if value[0] == 'contains' and value.length == 2
225 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
226 conditions << "%#{value[1]}%"
228 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
231 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
232 conditions[0] << " and #{ar_table_name}.#{attr}=?"
234 elsif value.is_a? Hash
235 # Not quite the same thing as "equal?" but better than nothing?
238 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
239 conditions << "%#{k}%#{v}%"
245 if conditions.length > 1
246 conditions[0].sub!(/^1=1 and /, '')
253 unless action_name.in? %w(create update destroy)
254 # Map attribute names in @select to real column names, resolve
255 # those to fully-qualified SQL column names, and pass the
256 # resulting string to the select method.
257 columns_list = model_class.columns_for_attributes(@select).
258 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
259 @objects = @objects.select(columns_list.join(", "))
262 # This information helps clients understand what they're seeing
263 # (Workbench always expects it), but they can't select it explicitly
264 # because it's not an SQL column. Always add it.
265 # (This is harmless, given that clients can deduce what they're
266 # looking at by the returned UUID anyway.)
269 @objects = @objects.order(@orders.join ", ") if @orders.any?
270 @objects = @objects.limit(@limit)
271 @objects = @objects.offset(@offset)
272 @objects = @objects.uniq(@distinct) if not @distinct.nil?
275 # limit_database_read ensures @objects (which must be an
276 # ActiveRelation) does not return too many results to fit in memory,
277 # by previewing the results and calling @objects.limit() if
279 def limit_database_read(model_class:)
280 return if @limit == 0 || @limit == 1
281 model_class ||= self.model_class
282 limit_columns = model_class.limit_index_columns_read
283 limit_columns &= model_class.columns_for_attributes(@select) if @select
284 return if limit_columns.empty?
285 model_class.transaction do
286 limit_query = @objects.
287 except(:select, :distinct).
288 select("(%s) as read_length" %
289 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
292 limit_query.each do |record|
294 read_total += record.read_length.to_i
295 if read_total >= Rails.configuration.max_index_database_read
296 new_limit -= 1 if new_limit > 1
299 elsif new_limit >= @limit
303 @objects = @objects.limit(@limit)
304 # Force @objects to run its query inside this transaction.
305 @objects.each { |_| break }
310 return @attrs if @attrs
311 @attrs = params[resource_name]
312 if @attrs.is_a? String
313 @attrs = Oj.strict_load @attrs, symbol_keys: true
315 unless @attrs.is_a? Hash
316 message = "No #{resource_name}"
317 if resource_name.index('_')
318 message << " (or #{resource_name.camelcase(:lower)})"
320 message << " hash provided with request"
321 raise ArgumentError.new(message)
323 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
324 @attrs.delete x.to_sym
326 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
333 if current_api_client_authorization
334 @read_auths << current_api_client_authorization
336 # Load reader tokens if this is a read request.
337 # If there are too many reader tokens, assume the request is malicious
339 if request.get? and params[:reader_tokens] and
340 params[:reader_tokens].size < 100
341 @read_auths += ApiClientAuthorization
343 .where('api_token IN (?) AND
344 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
345 params[:reader_tokens])
348 @read_auths.select! { |auth| auth.scopes_allow_request? request }
349 @read_users = @read_auths.map(&:user).uniq
354 respond_to do |format|
355 format.json { send_error("Not logged in", status: 401) }
356 format.html { redirect_to '/auth/joshid' }
363 unless current_user and current_user.is_admin
364 send_error("Forbidden", status: 403)
368 def require_auth_scope
369 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
370 if require_login != false
371 send_error("Forbidden", status: 403)
377 def set_current_request_id
378 req_id = request.headers['X-Request-Id']
379 if !req_id || req_id.length < 1 || req_id.length > 1024
380 # Client-supplied ID is either missing or too long to be
381 # considered friendly.
382 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
384 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
386 Thread.current[:request_id] = nil
389 def append_info_to_payload(payload)
391 payload[:request_id] = response.headers['X-Request-Id']
392 payload[:client_ipaddr] = @remote_ip
393 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
396 def disable_api_methods
397 if Rails.configuration.disable_api_methods.
398 include?(controller_name + "." + action_name)
399 send_error("Disabled", status: 404)
404 response.headers['Access-Control-Allow-Origin'] = '*'
405 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
406 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
407 response.headers['Access-Control-Max-Age'] = '86486400'
410 def respond_with_json_by_default
411 html_index = request.accepts.index(Mime::HTML)
412 if html_index.nil? or request.accepts[0...html_index].include?(Mime::JSON)
413 request.format = :json
418 controller_name.classify.constantize
421 def resource_name # params[] key used by client
422 controller_name.singularize
429 def find_object_by_uuid
430 if params[:id] and params[:id].match(/\D/)
431 params[:uuid] = params.delete :id
433 @where = { uuid: params[:uuid] }
439 find_objects_for_index
440 @object = @objects.first
443 def reload_object_before_update
444 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
445 # error when updating an object which was retrieved using a join.
446 if @object.andand.readonly?
447 @object = model_class.find_by_uuid(@objects.first.uuid)
451 def load_json_value(hash, key, must_be_class=nil)
452 if hash[key].is_a? String
453 hash[key] = SafeJSON.load(hash[key])
454 if must_be_class and !hash[key].is_a? must_be_class
455 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
460 def self.accept_attribute_as_json(attr, must_be_class=nil)
461 before_filter lambda { accept_attribute_as_json attr, must_be_class }
463 accept_attribute_as_json :properties, Hash
464 accept_attribute_as_json :info, Hash
465 def accept_attribute_as_json(attr, must_be_class)
466 if params[resource_name] and resource_attrs.is_a? Hash
467 if resource_attrs[attr].is_a? Hash
468 # Convert symbol keys to strings (in hashes provided by
470 resource_attrs[attr] = resource_attrs[attr].
471 with_indifferent_access.to_hash
473 load_json_value(resource_attrs, attr, must_be_class)
478 def self.accept_param_as_json(key, must_be_class=nil)
479 prepend_before_filter lambda { load_json_value(params, key, must_be_class) }
481 accept_param_as_json :reader_tokens, Array
483 def object_list(model_class:)
484 if @objects.respond_to?(:except)
485 limit_database_read(model_class: model_class)
488 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
493 :items => @objects.as_api_response(nil, {select: @select})
496 when nil, '', 'exact'
497 if @objects.respond_to? :except
498 list[:items_available] = @objects.
499 except(:limit).except(:offset).
500 count(:id, distinct: true)
504 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
510 send_json object_list(model_class: self.model_class)
514 # Caveat: this is highly dependent on the proxy setup. YMMV.
515 if request.headers.key?('HTTP_X_REAL_IP') then
516 # We're behind a reverse proxy
517 @remote_ip = request.headers['HTTP_X_REAL_IP']
519 # Hopefully, we are not!
520 @remote_ip = request.env['REMOTE_ADDR']
524 def load_required_parameters
525 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
527 if info[:required] and not params.include?(key)
528 raise ArgumentError.new("#{key} parameter is required")
529 elsif info[:type] == 'boolean'
530 # Make sure params[key] is either true or false -- not a
531 # string, not nil, etc.
532 if not params.include?(key)
533 params[key] = info[:default]
534 elsif [false, 'false', '0', 0].include? params[key]
536 elsif [true, 'true', '1', 1].include? params[key]
539 raise TypeError.new("#{key} parameter must be a boolean, true or false")
546 def self._create_requires_parameters
548 ensure_unique_name: {
550 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
558 def self._update_requires_parameters
562 def self._index_requires_parameters
564 filters: { type: 'array', required: false },
565 where: { type: 'object', required: false },
566 order: { type: 'array', required: false },
567 select: { type: 'array', required: false },
568 distinct: { type: 'boolean', required: false },
569 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
570 offset: { type: 'integer', required: false, default: 0 },
571 count: { type: 'string', required: false, default: 'exact' },
575 def client_accepts_plain_text_stream
576 (request.headers['Accept'].split(' ') &
577 ['text/plain', '*/*']).count > 0
582 response = opts.first[:json]
583 if response.is_a?(Hash) &&
585 Thread.current[:request_starttime]
586 response[:_profile] = {
587 request_time: Time.now - Thread.current[:request_starttime]