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 :load_required_parameters
46 before_action(:find_object_by_uuid,
47 except: [:index, :create] + ERROR_ACTIONS)
48 before_action(:set_nullable_attrs_to_null, only: [:update, :create])
49 before_action :load_limit_offset_order_params, only: [:index, :contents]
50 before_action :load_where_param, only: [:index, :contents]
51 before_action :load_filters_param, only: [:index, :contents]
52 before_action :find_objects_for_index, :only => :index
53 before_action :reload_object_before_update, :only => :update
54 before_action(:render_404_if_no_object,
55 except: [:index, :create] + ERROR_ACTIONS)
57 attr_writer :resource_attrs
60 rescue_from(Exception,
61 ArvadosModel::PermissionDeniedError,
62 :with => :render_error)
63 rescue_from(ActiveRecord::RecordNotFound,
64 ActionController::RoutingError,
65 ActionController::UnknownController,
66 AbstractController::ActionNotFound,
67 :with => :render_not_found)
78 @response_resource_name = nil
83 def default_url_options
85 if Rails.configuration.Services.Controller.ExternalURL != URI("")
86 exturl = Rails.configuration.Services.Controller.ExternalURL
87 options[:host] = exturl.host
88 options[:port] = exturl.port
89 options[:protocol] = exturl.scheme
95 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
96 @objects.each(&:eager_load_associations)
102 send_json @object.as_api_response(nil, select: @select)
106 @object = model_class.new resource_attrs
108 if @object.respond_to?(:name) && params[:ensure_unique_name]
109 @object.save_with_unique_name!
118 attrs_to_update = resource_attrs.reject { |k,v|
119 [:kind, :etag, :href].index k
121 @object.update_attributes! attrs_to_update
130 def catch_redirect_hint
132 if params.has_key?('redirect_to') then
133 session[:redirect_to] = params[:redirect_to]
138 def render_404_if_no_object
139 render_not_found "Object not found" if !@object
143 logger.error e.inspect
144 if e.respond_to? :backtrace and e.backtrace
145 # This will be cleared by lograge after adding it to the log.
146 # Usually lograge would get the exceptions, but in our case we're catching
147 # all of them with exception handlers that cannot re-raise them because they
148 # don't get propagated.
149 Thread.current[:exception] = e.inspect
150 Thread.current[:backtrace] = e.backtrace.collect { |x| x + "\n" }.join('')
152 if (@object.respond_to? :errors and
153 @object.errors.andand.full_messages.andand.any?)
154 errors = @object.errors.full_messages
155 logger.error errors.inspect
159 status = e.respond_to?(:http_status) ? e.http_status : 422
160 send_error(*errors, status: status)
163 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
164 logger.error e.inspect
165 send_error("Path not found", status: 404)
169 send_json ({accepted: true}), status: 202
174 def bool_param(pname)
175 if params.include?(pname)
176 if params[pname].is_a?(Boolean)
179 logger.warn "Warning: received non-boolean parameter '#{pname}' on #{self.class.inspect}."
185 def send_error(*args)
186 if args.last.is_a? Hash
191 err[:errors] ||= args
192 err[:errors].map! do |err|
193 err += " (" + Thread.current[:request_id] + ")"
195 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
196 status = err.delete(:status) || 422
197 logger.error "Error #{err[:error_token]}: #{status}"
198 send_json err, status: status
201 def send_json response, opts={}
202 # The obvious render(json: ...) forces a slow JSON encoder. See
203 # #3021 and commit logs. Might be fixed in Rails 4.1.
205 plain: SafeJSON.dump(response).html_safe,
206 content_type: 'application/json'
210 def find_objects_for_index
211 @objects ||= model_class.readable_by(*@read_users, {
212 :include_trash => (bool_param(:include_trash) || 'untrash' == action_name),
213 :include_old_versions => bool_param(:include_old_versions)
215 apply_where_limit_order_params
218 def apply_filters model_class=nil
219 model_class ||= self.model_class
220 @objects = model_class.apply_filters(@objects, @filters)
223 def apply_where_limit_order_params model_class=nil
224 model_class ||= self.model_class
225 apply_filters model_class
227 ar_table_name = @objects.table_name
228 if @where.is_a? Hash and @where.any?
230 @where.each do |attr,value|
231 if attr.to_s == 'any'
232 if value.is_a?(Array) and
233 value.length == 2 and
234 value[0] == 'contains' then
236 model_class.searchable_columns('ilike').each do |column|
237 # Including owner_uuid in an "any column" search will
238 # probably just return a lot of false positives.
239 next if column == 'owner_uuid'
240 ilikes << "#{ar_table_name}.#{column} ilike ?"
241 conditions << "%#{value[1]}%"
244 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
247 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
248 model_class.columns.collect(&:name).index(attr.to_s)
250 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
252 elsif value.is_a? Array
253 if value[0] == 'contains' and value.length == 2
254 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
255 conditions << "%#{value[1]}%"
257 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
260 elsif value.is_a? String or value.is_a? Integer or value == true or value == false
261 conditions[0] << " and #{ar_table_name}.#{attr}=?"
263 elsif value.is_a? Hash
264 # Not quite the same thing as "equal?" but better than nothing?
267 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
268 conditions << "%#{k}%#{v}%"
274 if conditions.length > 1
275 conditions[0].sub!(/^1=1 and /, '')
282 unless action_name.in? %w(create update destroy)
283 # Map attribute names in @select to real column names, resolve
284 # those to fully-qualified SQL column names, and pass the
285 # resulting string to the select method.
286 columns_list = model_class.columns_for_attributes(@select).
287 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
288 @objects = @objects.select(columns_list.join(", "))
291 # This information helps clients understand what they're seeing
292 # (Workbench always expects it), but they can't select it explicitly
293 # because it's not an SQL column. Always add it.
294 # (This is harmless, given that clients can deduce what they're
295 # looking at by the returned UUID anyway.)
298 @objects = @objects.order(@orders.join ", ") if @orders.any?
299 @objects = @objects.limit(@limit)
300 @objects = @objects.offset(@offset)
301 @objects = @objects.distinct(@distinct) if not @distinct.nil?
304 # limit_database_read ensures @objects (which must be an
305 # ActiveRelation) does not return too many results to fit in memory,
306 # by previewing the results and calling @objects.limit() if
308 def limit_database_read(model_class:)
309 return if @limit == 0 || @limit == 1
310 model_class ||= self.model_class
311 limit_columns = model_class.limit_index_columns_read
312 limit_columns &= model_class.columns_for_attributes(@select) if @select
313 return if limit_columns.empty?
314 model_class.transaction do
315 limit_query = @objects.
316 except(:select, :distinct).
317 select("(%s) as read_length" %
318 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
321 limit_query.each do |record|
323 read_total += record.read_length.to_i
324 if read_total >= Rails.configuration.API.MaxIndexDatabaseRead
325 new_limit -= 1 if new_limit > 1
328 elsif new_limit >= @limit
332 @objects = @objects.limit(@limit)
333 # Force @objects to run its query inside this transaction.
334 @objects.each { |_| break }
339 return @attrs if @attrs
340 @attrs = params[resource_name]
343 elsif @attrs.is_a? String
344 @attrs = Oj.strict_load @attrs, symbol_keys: true
346 unless [Hash, ActionController::Parameters].include? @attrs.class
347 message = "No #{resource_name}"
348 if resource_name.index('_')
349 message << " (or #{resource_name.camelcase(:lower)})"
351 message << " hash provided with request"
352 raise ArgumentError.new(message)
354 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
355 @attrs.delete x.to_sym
357 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
364 if current_api_client_authorization
365 @read_auths << current_api_client_authorization
367 # Load reader tokens if this is a read request.
368 # If there are too many reader tokens, assume the request is malicious
370 if request.get? and params[:reader_tokens] and
371 params[:reader_tokens].size < 100
372 secrets = params[:reader_tokens].map { |t|
373 if t.is_a? String and t.starts_with? "v2/"
379 @read_auths += ApiClientAuthorization
381 .where('api_token IN (?) AND
382 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
386 @read_auths.select! { |auth| auth.scopes_allow_request? request }
387 @read_users = @read_auths.map(&:user).uniq
392 respond_to do |format|
393 format.json { send_error("Not logged in", status: 401) }
394 format.html { redirect_to '/auth/joshid' }
401 unless current_user and current_user.is_admin
402 send_error("Forbidden", status: 403)
406 def require_auth_scope
407 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
408 if require_login != false
409 send_error("Forbidden", status: 403)
415 def set_current_request_id
416 req_id = request.headers['X-Request-Id']
417 if !req_id || req_id.length < 1 || req_id.length > 1024
418 # Client-supplied ID is either missing or too long to be
419 # considered friendly.
420 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
422 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
423 Rails.logger.tagged(req_id) do
426 Thread.current[:request_id] = nil
429 def append_info_to_payload(payload)
431 payload[:request_id] = response.headers['X-Request-Id']
432 payload[:client_ipaddr] = @remote_ip
433 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
436 def disable_api_methods
437 if Rails.configuration.API.DisabledAPIs[controller_name + "." + action_name]
438 send_error("Disabled", status: 404)
443 response.headers['Access-Control-Allow-Origin'] = '*'
444 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
445 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
446 response.headers['Access-Control-Max-Age'] = '86486400'
449 def respond_with_json_by_default
450 html_index = request.accepts.index(Mime[:html])
451 if html_index.nil? or request.accepts[0...html_index].include?(Mime[:json])
452 request.format = :json
457 controller_name.classify.constantize
460 def resource_name # params[] key used by client
461 controller_name.singularize
468 def find_object_by_uuid
469 if params[:id] and params[:id].match(/\D/)
470 params[:uuid] = params.delete :id
472 @where = { uuid: params[:uuid] }
478 find_objects_for_index
479 @object = @objects.first
482 def nullable_attributes
486 # Go code may send empty values (ie: empty string instead of NULL) that
487 # should be translated to NULL on the database.
488 def set_nullable_attrs_to_null
489 nullify_attrs(resource_attrs.to_hash).each do |k, v|
490 resource_attrs[k] = v
494 def nullify_attrs(a = {})
495 new_attrs = a.to_hash.symbolize_keys
496 (new_attrs.keys & nullable_attributes).each do |attr|
497 val = new_attrs[attr]
498 if (val.class == Integer && val == 0) || (val.class == String && val == "")
499 new_attrs[attr] = nil
505 def reload_object_before_update
506 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
507 # error when updating an object which was retrieved using a join.
508 if @object.andand.readonly?
509 @object = model_class.find_by_uuid(@objects.first.uuid)
513 def load_json_value(hash, key, must_be_class=nil)
514 return if hash[key].nil?
517 if val.is_a? ActionController::Parameters
518 val = val.to_unsafe_hash
519 elsif val.is_a? String
520 val = SafeJSON.load(val)
523 # When assigning a Hash to an ActionController::Parameters and then
524 # retrieve it, we get another ActionController::Parameters instead of
525 # a Hash. This doesn't happen with other types. This is why 'val' is
526 # being used to do type checking below.
527 if must_be_class and !val.is_a? must_be_class
528 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
532 def self.accept_attribute_as_json(attr, must_be_class=nil)
533 before_action lambda { accept_attribute_as_json attr, must_be_class }
535 accept_attribute_as_json :properties, Hash
536 accept_attribute_as_json :info, Hash
537 def accept_attribute_as_json(attr, must_be_class)
538 if params[resource_name] and [Hash, ActionController::Parameters].include?(resource_attrs.class)
539 if resource_attrs[attr].is_a? Hash
540 # Convert symbol keys to strings (in hashes provided by
542 resource_attrs[attr] = resource_attrs[attr].
543 with_indifferent_access.to_hash
545 load_json_value(resource_attrs, attr, must_be_class)
550 def self.accept_param_as_json(key, must_be_class=nil)
551 prepend_before_action lambda { load_json_value(params, key, must_be_class) }
553 accept_param_as_json :reader_tokens, Array
555 def object_list(model_class:)
556 if @objects.respond_to?(:except)
557 limit_database_read(model_class: model_class)
560 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
565 :items => @objects.as_api_response(nil, {select: @select})
568 list[:included] = @extra_included.as_api_response(nil, {select: @select})
571 when nil, '', 'exact'
572 if @objects.respond_to? :except
573 list[:items_available] = @objects.
574 except(:limit).except(:offset).
579 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
585 send_json object_list(model_class: self.model_class)
589 # Caveat: this is highly dependent on the proxy setup. YMMV.
590 if request.headers.key?('HTTP_X_REAL_IP') then
591 # We're behind a reverse proxy
592 @remote_ip = request.headers['HTTP_X_REAL_IP']
594 # Hopefully, we are not!
595 @remote_ip = request.env['REMOTE_ADDR']
599 def load_required_parameters
600 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
602 if info[:required] and not params.include?(key)
603 raise ArgumentError.new("#{key} parameter is required")
604 elsif info[:type] == 'boolean'
605 # Make sure params[key] is either true or false -- not a
606 # string, not nil, etc.
607 if not params.include?(key)
608 params[key] = info[:default]
609 elsif [false, 'false', '0', 0].include? params[key]
611 elsif [true, 'true', '1', 1].include? params[key]
614 raise TypeError.new("#{key} parameter must be a boolean, true or false")
621 def self._create_requires_parameters
623 ensure_unique_name: {
625 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
632 description: "Create object on a remote federated cluster instead of the current one.",
639 def self._update_requires_parameters
643 def self._index_requires_parameters
645 filters: { type: 'array', required: false },
646 where: { type: 'object', required: false },
647 order: { type: 'array', required: false },
648 select: { type: 'array', required: false },
649 distinct: { type: 'boolean', required: false },
650 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
651 offset: { type: 'integer', required: false, default: 0 },
652 count: { type: 'string', required: false, default: 'exact' },
655 description: "List objects on a remote federated cluster instead of the current one.",
662 def client_accepts_plain_text_stream
663 (request.headers['Accept'].split(' ') &
664 ['text/plain', '*/*']).count > 0
669 response = opts.first[:json]
670 if response.is_a?(Hash) &&
672 Thread.current[:request_starttime]
673 response[:_profile] = {
674 request_time: Time.now - Thread.current[:request_starttime]