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 :load_limit_offset_order_params, only: [:index, :contents]
47 before_action :load_select_param
48 before_action(:find_object_by_uuid,
49 except: [:index, :create] + ERROR_ACTIONS)
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(:set_nullable_attrs_to_null, only: [:update, :create])
54 before_action :reload_object_before_update, :only => :update
55 before_action(:render_404_if_no_object,
56 except: [:index, :create] + ERROR_ACTIONS)
57 before_action :only_admin_can_bypass_federation
59 attr_writer :resource_attrs
62 rescue_from(Exception,
63 ArvadosModel::PermissionDeniedError,
64 :with => :render_error)
65 rescue_from(ActiveRecord::RecordNotFound,
66 ActionController::RoutingError,
67 AbstractController::ActionNotFound,
68 :with => :render_not_found)
79 @response_resource_name = nil
84 def default_url_options
86 if Rails.configuration.Services.Controller.ExternalURL != URI("")
87 exturl = Rails.configuration.Services.Controller.ExternalURL
88 options[:host] = exturl.host
89 options[:port] = exturl.port
90 options[:protocol] = exturl.scheme
96 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
97 @objects.each(&:eager_load_associations)
103 send_json @object.as_api_response(nil, select: @select)
107 @object = model_class.new resource_attrs
109 if @object.respond_to?(:name) && params[:ensure_unique_name]
110 @object.save_with_unique_name!
119 attrs_to_update = resource_attrs.reject { |k,v|
120 [:kind, :etag, :href].index k
122 @object.update_attributes! attrs_to_update
131 def catch_redirect_hint
133 if params.has_key?('redirect_to') then
134 session[:redirect_to] = params[:redirect_to]
139 def render_404_if_no_object
140 render_not_found "Object not found" if !@object
143 def only_admin_can_bypass_federation
144 unless !params[:bypass_federation] || current_user.andand.is_admin
145 send_error("The bypass_federation parameter is only permitted when current user is admin", status: 403)
150 logger.error e.inspect
151 if e.respond_to? :backtrace and e.backtrace
152 # This will be cleared by lograge after adding it to the log.
153 # Usually lograge would get the exceptions, but in our case we're catching
154 # all of them with exception handlers that cannot re-raise them because they
155 # don't get propagated.
156 Thread.current[:exception] = e.inspect
157 Thread.current[:backtrace] = e.backtrace.collect { |x| x + "\n" }.join('')
159 if (@object.respond_to? :errors and
160 @object.errors.andand.full_messages.andand.any?)
161 errors = @object.errors.full_messages
162 logger.error errors.inspect
166 status = e.respond_to?(:http_status) ? e.http_status : 422
167 send_error(*errors, status: status)
170 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
171 logger.error e.inspect
172 send_error("Path not found", status: 404)
176 send_json ({accepted: true}), status: 202
181 def bool_param(pname)
182 if params.include?(pname)
183 if params[pname].is_a?(Boolean)
186 logger.warn "Warning: received non-boolean value #{params[pname].inspect} for boolean parameter #{pname} on #{self.class.inspect}, treating as false."
192 def send_error(*args)
193 if args.last.is_a? Hash
198 err[:errors] ||= args
199 err[:errors].map! do |err|
200 err += " (#{request.request_id})"
202 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
203 status = err.delete(:status) || 422
204 logger.error "Error #{err[:error_token]}: #{status}"
205 send_json err, status: status
208 def send_json response, opts={}
209 # The obvious render(json: ...) forces a slow JSON encoder. See
210 # #3021 and commit logs. Might be fixed in Rails 4.1.
212 plain: SafeJSON.dump(response).html_safe,
213 content_type: 'application/json'
217 def find_objects_for_index
218 @objects ||= model_class.readable_by(*@read_users, {
219 :include_trash => (bool_param(:include_trash) || 'untrash' == action_name),
220 :include_old_versions => bool_param(:include_old_versions)
222 apply_where_limit_order_params
225 def apply_filters model_class=nil
226 model_class ||= self.model_class
227 @objects = model_class.apply_filters(@objects, @filters)
230 def apply_where_limit_order_params model_class=nil
231 model_class ||= self.model_class
232 apply_filters model_class
234 ar_table_name = @objects.table_name
235 if @where.is_a? Hash and @where.any?
237 @where.each do |attr,value|
238 if attr.to_s == 'any'
239 if value.is_a?(Array) and
240 value.length == 2 and
241 value[0] == 'contains' then
243 model_class.searchable_columns('ilike').each do |column|
244 # Including owner_uuid in an "any column" search will
245 # probably just return a lot of false positives.
246 next if column == 'owner_uuid'
247 ilikes << "#{ar_table_name}.#{column} ilike ?"
248 conditions << "%#{value[1]}%"
251 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
254 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
255 model_class.columns.collect(&:name).index(attr.to_s)
257 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
259 elsif value.is_a? Array
260 if value[0] == 'contains' and value.length == 2
261 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
262 conditions << "%#{value[1]}%"
264 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
267 elsif value.is_a? String or value.is_a? Integer or value == true or value == false
268 conditions[0] << " and #{ar_table_name}.#{attr}=?"
270 elsif value.is_a? Hash
271 # Not quite the same thing as "equal?" but better than nothing?
274 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
275 conditions << "%#{k}%#{v}%"
281 if conditions.length > 1
282 conditions[0].sub!(/^1=1 and /, '')
289 unless action_name.in? %w(create update destroy)
290 # Map attribute names in @select to real column names, resolve
291 # those to fully-qualified SQL column names, and pass the
292 # resulting string to the select method.
293 columns_list = model_class.columns_for_attributes(@select).
294 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
295 @objects = @objects.select(columns_list.join(", "))
298 # This information helps clients understand what they're seeing
299 # (Workbench always expects it), but they can't select it explicitly
300 # because it's not an SQL column. Always add it.
301 # (This is harmless, given that clients can deduce what they're
302 # looking at by the returned UUID anyway.)
305 @objects = @objects.order(@orders.join ", ") if @orders.any?
306 @objects = @objects.limit(@limit)
307 @objects = @objects.offset(@offset)
308 @objects = @objects.distinct() if @distinct
311 # limit_database_read ensures @objects (which must be an
312 # ActiveRelation) does not return too many results to fit in memory,
313 # by previewing the results and calling @objects.limit() if
315 def limit_database_read(model_class:)
316 return if @limit == 0 || @limit == 1
317 model_class ||= self.model_class
318 limit_columns = model_class.limit_index_columns_read
319 limit_columns &= model_class.columns_for_attributes(@select) if @select
320 return if limit_columns.empty?
321 model_class.transaction do
322 limit_query = @objects.
323 except(:select, :distinct).
324 select("(%s) as read_length" %
325 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
328 limit_query.each do |record|
330 read_total += record.read_length.to_i
331 if read_total >= Rails.configuration.API.MaxIndexDatabaseRead
332 new_limit -= 1 if new_limit > 1
335 elsif new_limit >= @limit
339 @objects = @objects.limit(@limit)
340 # Force @objects to run its query inside this transaction.
341 @objects.each { |_| break }
346 return @attrs if @attrs
347 @attrs = params[resource_name]
350 elsif @attrs.is_a? String
351 @attrs = Oj.strict_load @attrs, symbol_keys: true
353 unless [Hash, ActionController::Parameters].include? @attrs.class
354 message = "No #{resource_name}"
355 if resource_name.index('_')
356 message << " (or #{resource_name.camelcase(:lower)})"
358 message << " hash provided with request"
359 raise ArgumentError.new(message)
361 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
362 @attrs.delete x.to_sym
364 @attrs = @attrs.symbolize_keys if @attrs.is_a? ActiveSupport::HashWithIndifferentAccess
371 if current_api_client_authorization
372 @read_auths << current_api_client_authorization
374 # Load reader tokens if this is a read request.
375 # If there are too many reader tokens, assume the request is malicious
377 if request.get? and params[:reader_tokens] and
378 params[:reader_tokens].size < 100
379 secrets = params[:reader_tokens].map { |t|
380 if t.is_a? String and t.starts_with? "v2/"
386 @read_auths += ApiClientAuthorization
388 .where('api_token IN (?) AND
389 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
393 @read_auths.select! { |auth| auth.scopes_allow_request? request }
394 @read_users = @read_auths.map(&:user).uniq
399 respond_to do |format|
400 format.json { send_error("Not logged in", status: 401) }
401 format.html { redirect_to '/login' }
408 unless current_user and current_user.is_admin
409 send_error("Forbidden", status: 403)
413 def require_auth_scope
414 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
415 if require_login != false
416 send_error("Forbidden", status: 403)
422 def set_current_request_id
423 Rails.logger.tagged(request.request_id) do
428 def append_info_to_payload(payload)
430 payload[:request_id] = request.request_id
431 payload[:client_ipaddr] = @remote_ip
432 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
435 def disable_api_methods
436 if Rails.configuration.API.DisabledAPIs[controller_name + "." + action_name]
437 send_error("Disabled", status: 404)
442 response.headers['Access-Control-Allow-Origin'] = '*'
443 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
444 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
445 response.headers['Access-Control-Max-Age'] = '86486400'
448 def respond_with_json_by_default
449 html_index = request.accepts.index(Mime[:html])
450 if html_index.nil? or request.accepts[0...html_index].include?(Mime[:json])
451 request.format = :json
456 controller_name.classify.constantize
459 def resource_name # params[] key used by client
460 controller_name.singularize
467 def find_object_by_uuid
468 if params[:id] and params[:id].match(/\D/)
469 params[:uuid] = params.delete :id
471 @where = { uuid: params[:uuid] }
477 find_objects_for_index
478 @object = @objects.first
481 def nullable_attributes
485 # Go code may send empty values (ie: empty string instead of NULL) that
486 # should be translated to NULL on the database.
487 def set_nullable_attrs_to_null
488 nullify_attrs(resource_attrs.to_hash).each do |k, v|
489 resource_attrs[k] = v
493 def nullify_attrs(a = {})
494 new_attrs = a.to_hash.symbolize_keys
495 (new_attrs.keys & nullable_attributes).each do |attr|
496 val = new_attrs[attr]
497 if (val.class == Integer && val == 0) || (val.class == String && val == "")
498 new_attrs[attr] = nil
504 def reload_object_before_update
505 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
506 # error when updating an object which was retrieved using a join.
507 if @object.andand.readonly?
508 @object = model_class.find_by_uuid(@objects.first.uuid)
512 def load_json_value(hash, key, must_be_class=nil)
513 return if hash[key].nil?
516 if val.is_a? ActionController::Parameters
517 val = val.to_unsafe_hash
518 elsif val.is_a? String
519 val = SafeJSON.load(val)
522 # When assigning a Hash to an ActionController::Parameters and then
523 # retrieve it, we get another ActionController::Parameters instead of
524 # a Hash. This doesn't happen with other types. This is why 'val' is
525 # being used to do type checking below.
526 if must_be_class and !val.is_a? must_be_class
527 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
531 def self.accept_attribute_as_json(attr, must_be_class=nil)
532 before_action lambda { accept_attribute_as_json attr, must_be_class }
534 accept_attribute_as_json :properties, Hash
535 accept_attribute_as_json :info, Hash
536 def accept_attribute_as_json(attr, must_be_class)
537 if params[resource_name] and [Hash, ActionController::Parameters].include?(resource_attrs.class)
538 if resource_attrs[attr].is_a? Hash
539 # Convert symbol keys to strings (in hashes provided by
541 resource_attrs[attr] = resource_attrs[attr].
542 with_indifferent_access.to_hash
544 load_json_value(resource_attrs, attr, must_be_class)
549 def self.accept_param_as_json(key, must_be_class=nil)
550 prepend_before_action lambda { load_json_value(params, key, must_be_class) }
552 accept_param_as_json :reader_tokens, Array
554 def object_list(model_class:)
555 if @objects.respond_to?(:except)
556 limit_database_read(model_class: model_class)
559 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
564 :items => @objects.as_api_response(nil, {select: @select})
567 list[:included] = @extra_included.as_api_response(nil, {select: @select})
570 when nil, '', 'exact'
571 if @objects.respond_to? :except
572 list[:items_available] = @objects.
573 except(:limit).except(:offset).
574 count(@distinct ? :id : '*')
578 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
584 send_json object_list(model_class: self.model_class)
588 # Caveat: this is highly dependent on the proxy setup. YMMV.
589 if request.headers.key?('HTTP_X_REAL_IP') then
590 # We're behind a reverse proxy
591 @remote_ip = request.headers['HTTP_X_REAL_IP']
593 # Hopefully, we are not!
594 @remote_ip = request.env['REMOTE_ADDR']
598 def load_required_parameters
599 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
601 if info[:required] and not params.include?(key)
602 raise ArgumentError.new("#{key} parameter is required")
603 elsif info[:type] == 'boolean'
604 # Make sure params[key] is either true or false -- not a
605 # string, not nil, etc.
606 if not params.include?(key)
607 params[key] = info[:default] || false
608 elsif [false, 'false', '0', 0].include? params[key]
610 elsif [true, 'true', '1', 1].include? params[key]
613 raise TypeError.new("#{key} parameter must be a boolean, true or false")
620 def self._create_requires_parameters
624 description: "Attributes of the new object to return in the response.",
627 ensure_unique_name: {
629 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
636 description: "Create object on a remote federated cluster instead of the current one.",
643 def self._update_requires_parameters
647 description: "Attributes of the updated object to return in the response.",
653 def self._show_requires_parameters
657 description: "Attributes of the object to return in the response.",
663 def self._index_requires_parameters
665 filters: { type: 'array', required: false },
666 where: { type: 'object', required: false },
667 order: { type: 'array', required: false },
670 description: "Attributes of each object to return in the response.",
673 distinct: { type: 'boolean', required: false, default: false },
674 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
675 offset: { type: 'integer', required: false, default: 0 },
676 count: { type: 'string', required: false, default: 'exact' },
679 description: "List objects on a remote federated cluster instead of the current one.",
686 description: 'bypass federation behavior, list items from local instance database only'
691 def client_accepts_plain_text_stream
692 (request.headers['Accept'].split(' ') &
693 ['text/plain', '*/*']).count > 0
698 response = opts.first[:json]
699 if response.is_a?(Hash) &&
701 Thread.current[:request_starttime]
702 response[:_profile] = {
703 request_time: Time.now - Thread.current[:request_starttime]