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_action :set_current_request_id
37 before_action :disable_api_methods
38 before_action :set_cors_headers
39 before_action :respond_with_json_by_default
40 before_action :remote_ip
41 before_action :load_read_auths
42 before_action :require_auth_scope, except: ERROR_ACTIONS
44 before_action :catch_redirect_hint
45 before_action(:find_object_by_uuid,
46 except: [:index, :create] + ERROR_ACTIONS)
47 before_action :load_required_parameters
48 before_action :load_limit_offset_order_params, only: [:index, :contents]
49 before_action :load_where_param, only: [:index, :contents]
50 before_action :load_filters_param, only: [:index, :contents]
51 before_action :find_objects_for_index, :only => :index
52 before_action :reload_object_before_update, :only => :update
53 before_action(: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
84 def default_url_options
86 if Rails.configuration.host
87 options[:host] = Rails.configuration.host
89 if Rails.configuration.port
90 options[:port] = Rails.configuration.port
92 if Rails.configuration.protocol
93 options[:protocol] = Rails.configuration.protocol
99 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
100 @objects.each(&:eager_load_associations)
106 send_json @object.as_api_response(nil, select: @select)
110 @object = model_class.new resource_attrs
112 if @object.respond_to?(:name) && params[:ensure_unique_name]
113 @object.save_with_unique_name!
122 attrs_to_update = resource_attrs.reject { |k,v|
123 [:kind, :etag, :href].index k
125 @object.update_attributes! attrs_to_update
134 def catch_redirect_hint
136 if params.has_key?('redirect_to') then
137 session[:redirect_to] = params[:redirect_to]
142 def render_404_if_no_object
143 render_not_found "Object not found" if !@object
147 logger.error e.inspect
148 if !e.is_a? RequestError and (e.respond_to? :backtrace and e.backtrace)
149 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
151 if (@object.respond_to? :errors and
152 @object.errors.andand.full_messages.andand.any?)
153 errors = @object.errors.full_messages
154 logger.error errors.inspect
158 status = e.respond_to?(:http_status) ? e.http_status : 422
159 send_error(*errors, status: status)
162 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
163 logger.error e.inspect
164 send_error("Path not found", status: 404)
168 send_json ({accepted: true}), status: 202
173 def send_error(*args)
174 if args.last.is_a? Hash
179 err[:errors] ||= args
180 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
181 status = err.delete(:status) || 422
182 logger.error "Error #{err[:error_token]}: #{status}"
183 send_json err, status: status
186 def send_json response, opts={}
187 # The obvious render(json: ...) forces a slow JSON encoder. See
188 # #3021 and commit logs. Might be fixed in Rails 4.1.
190 plain: SafeJSON.dump(response).html_safe,
191 content_type: 'application/json'
195 def find_objects_for_index
196 @objects ||= model_class.readable_by(*@read_users, {
197 :include_trash => (params[:include_trash] || 'untrash' == action_name),
198 :include_old_versions => params[:include_old_versions]
200 apply_where_limit_order_params
203 def apply_filters model_class=nil
204 model_class ||= self.model_class
205 @objects = model_class.apply_filters(@objects, @filters)
208 def apply_where_limit_order_params model_class=nil
209 model_class ||= self.model_class
210 apply_filters model_class
212 ar_table_name = @objects.table_name
213 if @where.is_a? Hash and @where.any?
215 @where.each do |attr,value|
216 if attr.to_s == 'any'
217 if value.is_a?(Array) and
218 value.length == 2 and
219 value[0] == 'contains' then
221 model_class.searchable_columns('ilike').each do |column|
222 # Including owner_uuid in an "any column" search will
223 # probably just return a lot of false positives.
224 next if column == 'owner_uuid'
225 ilikes << "#{ar_table_name}.#{column} ilike ?"
226 conditions << "%#{value[1]}%"
229 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
232 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
233 model_class.columns.collect(&:name).index(attr.to_s)
235 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
237 elsif value.is_a? Array
238 if value[0] == 'contains' and value.length == 2
239 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
240 conditions << "%#{value[1]}%"
242 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
245 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
246 conditions[0] << " and #{ar_table_name}.#{attr}=?"
248 elsif value.is_a? Hash
249 # Not quite the same thing as "equal?" but better than nothing?
252 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
253 conditions << "%#{k}%#{v}%"
259 if conditions.length > 1
260 conditions[0].sub!(/^1=1 and /, '')
267 unless action_name.in? %w(create update destroy)
268 # Map attribute names in @select to real column names, resolve
269 # those to fully-qualified SQL column names, and pass the
270 # resulting string to the select method.
271 columns_list = model_class.columns_for_attributes(@select).
272 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
273 @objects = @objects.select(columns_list.join(", "))
276 # This information helps clients understand what they're seeing
277 # (Workbench always expects it), but they can't select it explicitly
278 # because it's not an SQL column. Always add it.
279 # (This is harmless, given that clients can deduce what they're
280 # looking at by the returned UUID anyway.)
283 @objects = @objects.order(@orders.join ", ") if @orders.any?
284 @objects = @objects.limit(@limit)
285 @objects = @objects.offset(@offset)
286 @objects = @objects.distinct(@distinct) if not @distinct.nil?
289 # limit_database_read ensures @objects (which must be an
290 # ActiveRelation) does not return too many results to fit in memory,
291 # by previewing the results and calling @objects.limit() if
293 def limit_database_read(model_class:)
294 return if @limit == 0 || @limit == 1
295 model_class ||= self.model_class
296 limit_columns = model_class.limit_index_columns_read
297 limit_columns &= model_class.columns_for_attributes(@select) if @select
298 return if limit_columns.empty?
299 model_class.transaction do
300 limit_query = @objects.
301 except(:select, :distinct).
302 select("(%s) as read_length" %
303 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
306 limit_query.each do |record|
308 read_total += record.read_length.to_i
309 if read_total >= Rails.configuration.max_index_database_read
310 new_limit -= 1 if new_limit > 1
313 elsif new_limit >= @limit
317 @objects = @objects.limit(@limit)
318 # Force @objects to run its query inside this transaction.
319 @objects.each { |_| break }
324 return @attrs if @attrs
325 @attrs = params[resource_name]
328 elsif @attrs.is_a? String
329 @attrs = Oj.strict_load @attrs, symbol_keys: true
331 unless [Hash, ActionController::Parameters].include? @attrs.class
332 message = "No #{resource_name}"
333 if resource_name.index('_')
334 message << " (or #{resource_name.camelcase(:lower)})"
336 message << " hash provided with request"
337 raise ArgumentError.new(message)
339 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
340 @attrs.delete x.to_sym
342 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
349 if current_api_client_authorization
350 @read_auths << current_api_client_authorization
352 # Load reader tokens if this is a read request.
353 # If there are too many reader tokens, assume the request is malicious
355 if request.get? and params[:reader_tokens] and
356 params[:reader_tokens].size < 100
357 secrets = params[:reader_tokens].map { |t|
358 if t.is_a? String and t.starts_with? "v2/"
364 @read_auths += ApiClientAuthorization
366 .where('api_token IN (?) AND
367 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
371 @read_auths.select! { |auth| auth.scopes_allow_request? request }
372 @read_users = @read_auths.map(&:user).uniq
377 respond_to do |format|
378 format.json { send_error("Not logged in", status: 401) }
379 format.html { redirect_to '/auth/joshid' }
386 unless current_user and current_user.is_admin
387 send_error("Forbidden", status: 403)
391 def require_auth_scope
392 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
393 if require_login != false
394 send_error("Forbidden", status: 403)
400 def set_current_request_id
401 req_id = request.headers['X-Request-Id']
402 if !req_id || req_id.length < 1 || req_id.length > 1024
403 # Client-supplied ID is either missing or too long to be
404 # considered friendly.
405 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
407 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
408 Rails.logger.tagged(req_id) do
411 Thread.current[:request_id] = nil
414 def append_info_to_payload(payload)
416 payload[:request_id] = response.headers['X-Request-Id']
417 payload[:client_ipaddr] = @remote_ip
418 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
421 def disable_api_methods
422 if Rails.configuration.disable_api_methods.
423 include?(controller_name + "." + action_name)
424 send_error("Disabled", status: 404)
429 response.headers['Access-Control-Allow-Origin'] = '*'
430 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
431 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
432 response.headers['Access-Control-Max-Age'] = '86486400'
435 def respond_with_json_by_default
436 html_index = request.accepts.index(Mime[:html])
437 if html_index.nil? or request.accepts[0...html_index].include?(Mime[:json])
438 request.format = :json
443 controller_name.classify.constantize
446 def resource_name # params[] key used by client
447 controller_name.singularize
454 def find_object_by_uuid
455 if params[:id] and params[:id].match(/\D/)
456 params[:uuid] = params.delete :id
458 @where = { uuid: params[:uuid] }
464 find_objects_for_index
465 @object = @objects.first
468 def reload_object_before_update
469 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
470 # error when updating an object which was retrieved using a join.
471 if @object.andand.readonly?
472 @object = model_class.find_by_uuid(@objects.first.uuid)
476 def load_json_value(hash, key, must_be_class=nil)
477 if hash[key].is_a? String
478 hash[key] = SafeJSON.load(hash[key])
479 if must_be_class and !hash[key].is_a? must_be_class
480 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
485 def self.accept_attribute_as_json(attr, must_be_class=nil)
486 before_action lambda { accept_attribute_as_json attr, must_be_class }
488 accept_attribute_as_json :properties, Hash
489 accept_attribute_as_json :info, Hash
490 def accept_attribute_as_json(attr, must_be_class)
491 if params[resource_name] and resource_attrs.is_a? Hash
492 if resource_attrs[attr].is_a? Hash
493 # Convert symbol keys to strings (in hashes provided by
495 resource_attrs[attr] = resource_attrs[attr].
496 with_indifferent_access.to_hash
498 load_json_value(resource_attrs, attr, must_be_class)
503 def self.accept_param_as_json(key, must_be_class=nil)
504 prepend_before_action lambda { load_json_value(params, key, must_be_class) }
506 accept_param_as_json :reader_tokens, Array
508 def object_list(model_class:)
509 if @objects.respond_to?(:except)
510 limit_database_read(model_class: model_class)
513 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
518 :items => @objects.as_api_response(nil, {select: @select})
521 list[:included] = @extra_included.as_api_response(nil, {select: @select})
524 when nil, '', 'exact'
525 if @objects.respond_to? :except
526 list[:items_available] = @objects.
527 except(:limit).except(:offset).
532 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
538 send_json object_list(model_class: self.model_class)
542 # Caveat: this is highly dependent on the proxy setup. YMMV.
543 if request.headers.key?('HTTP_X_REAL_IP') then
544 # We're behind a reverse proxy
545 @remote_ip = request.headers['HTTP_X_REAL_IP']
547 # Hopefully, we are not!
548 @remote_ip = request.env['REMOTE_ADDR']
552 def load_required_parameters
553 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
555 if info[:required] and not params.include?(key)
556 raise ArgumentError.new("#{key} parameter is required")
557 elsif info[:type] == 'boolean'
558 # Make sure params[key] is either true or false -- not a
559 # string, not nil, etc.
560 if not params.include?(key)
561 params[key] = info[:default]
562 elsif [false, 'false', '0', 0].include? params[key]
564 elsif [true, 'true', '1', 1].include? params[key]
567 raise TypeError.new("#{key} parameter must be a boolean, true or false")
574 def self._create_requires_parameters
576 ensure_unique_name: {
578 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
585 description: "Create object on a remote federated cluster instead of the current one.",
592 def self._update_requires_parameters
596 def self._index_requires_parameters
598 filters: { type: 'array', required: false },
599 where: { type: 'object', required: false },
600 order: { type: 'array', required: false },
601 select: { type: 'array', required: false },
602 distinct: { type: 'boolean', required: false },
603 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
604 offset: { type: 'integer', required: false, default: 0 },
605 count: { type: 'string', required: false, default: 'exact' },
608 description: "List objects on a remote federated cluster instead of the current one.",
615 def client_accepts_plain_text_stream
616 (request.headers['Accept'].split(' ') &
617 ['text/plain', '*/*']).count > 0
622 response = opts.first[:json]
623 if response.is_a?(Hash) &&
625 Thread.current[:request_starttime]
626 response[:_profile] = {
627 request_time: Time.now - Thread.current[:request_starttime]