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 :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 attr_writer :resource_attrs
59 rescue_from(Exception,
60 ArvadosModel::PermissionDeniedError,
61 :with => :render_error)
62 rescue_from(ActiveRecord::RecordNotFound,
63 ActionController::RoutingError,
64 ActionController::UnknownController,
65 AbstractController::ActionNotFound,
66 :with => :render_not_found)
77 @response_resource_name = nil
82 def default_url_options
84 if Rails.configuration.Services.Controller.ExternalURL != URI("")
85 exturl = Rails.configuration.Services.Controller.ExternalURL
86 options[:host] = exturl.host
87 options[:port] = exturl.port
88 options[:protocol] = exturl.scheme
94 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
95 @objects.each(&:eager_load_associations)
101 send_json @object.as_api_response(nil, select: @select)
105 @object = model_class.new resource_attrs
107 if @object.respond_to?(:name) && params[:ensure_unique_name]
108 @object.save_with_unique_name!
117 attrs_to_update = resource_attrs.reject { |k,v|
118 [:kind, :etag, :href].index k
120 @object.update_attributes! attrs_to_update
129 def catch_redirect_hint
131 if params.has_key?('redirect_to') then
132 session[:redirect_to] = params[:redirect_to]
137 def render_404_if_no_object
138 render_not_found "Object not found" if !@object
142 logger.error e.inspect
143 if !e.is_a? RequestError and (e.respond_to? :backtrace and e.backtrace)
144 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
146 if (@object.respond_to? :errors and
147 @object.errors.andand.full_messages.andand.any?)
148 errors = @object.errors.full_messages
149 logger.error errors.inspect
153 status = e.respond_to?(:http_status) ? e.http_status : 422
154 send_error(*errors, status: status)
157 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
158 logger.error e.inspect
159 send_error("Path not found", status: 404)
163 send_json ({accepted: true}), status: 202
168 def bool_param(pname)
169 if params.include?(pname)
170 if params[pname].is_a?(Boolean)
173 logger.warn "Warning: received non-boolean parameter '#{pname}' on #{self.class.inspect}."
179 def send_error(*args)
180 if args.last.is_a? Hash
185 err[:errors] ||= args
186 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
187 status = err.delete(:status) || 422
188 logger.error "Error #{err[:error_token]}: #{status}"
189 send_json err, status: status
192 def send_json response, opts={}
193 # The obvious render(json: ...) forces a slow JSON encoder. See
194 # #3021 and commit logs. Might be fixed in Rails 4.1.
196 plain: SafeJSON.dump(response).html_safe,
197 content_type: 'application/json'
201 def find_objects_for_index
202 @objects ||= model_class.readable_by(*@read_users, {
203 :include_trash => (bool_param(:include_trash) || 'untrash' == action_name),
204 :include_old_versions => bool_param(:include_old_versions)
206 apply_where_limit_order_params
209 def apply_filters model_class=nil
210 model_class ||= self.model_class
211 @objects = model_class.apply_filters(@objects, @filters)
214 def apply_where_limit_order_params model_class=nil
215 model_class ||= self.model_class
216 apply_filters model_class
218 ar_table_name = @objects.table_name
219 if @where.is_a? Hash and @where.any?
221 @where.each do |attr,value|
222 if attr.to_s == 'any'
223 if value.is_a?(Array) and
224 value.length == 2 and
225 value[0] == 'contains' then
227 model_class.searchable_columns('ilike').each do |column|
228 # Including owner_uuid in an "any column" search will
229 # probably just return a lot of false positives.
230 next if column == 'owner_uuid'
231 ilikes << "#{ar_table_name}.#{column} ilike ?"
232 conditions << "%#{value[1]}%"
235 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
238 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
239 model_class.columns.collect(&:name).index(attr.to_s)
241 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
243 elsif value.is_a? Array
244 if value[0] == 'contains' and value.length == 2
245 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
246 conditions << "%#{value[1]}%"
248 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
251 elsif value.is_a? String or value.is_a? Integer or value == true or value == false
252 conditions[0] << " and #{ar_table_name}.#{attr}=?"
254 elsif value.is_a? Hash
255 # Not quite the same thing as "equal?" but better than nothing?
258 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
259 conditions << "%#{k}%#{v}%"
265 if conditions.length > 1
266 conditions[0].sub!(/^1=1 and /, '')
273 unless action_name.in? %w(create update destroy)
274 # Map attribute names in @select to real column names, resolve
275 # those to fully-qualified SQL column names, and pass the
276 # resulting string to the select method.
277 columns_list = model_class.columns_for_attributes(@select).
278 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
279 @objects = @objects.select(columns_list.join(", "))
282 # This information helps clients understand what they're seeing
283 # (Workbench always expects it), but they can't select it explicitly
284 # because it's not an SQL column. Always add it.
285 # (This is harmless, given that clients can deduce what they're
286 # looking at by the returned UUID anyway.)
289 @objects = @objects.order(@orders.join ", ") if @orders.any?
290 @objects = @objects.limit(@limit)
291 @objects = @objects.offset(@offset)
292 @objects = @objects.distinct(@distinct) if not @distinct.nil?
295 # limit_database_read ensures @objects (which must be an
296 # ActiveRelation) does not return too many results to fit in memory,
297 # by previewing the results and calling @objects.limit() if
299 def limit_database_read(model_class:)
300 return if @limit == 0 || @limit == 1
301 model_class ||= self.model_class
302 limit_columns = model_class.limit_index_columns_read
303 limit_columns &= model_class.columns_for_attributes(@select) if @select
304 return if limit_columns.empty?
305 model_class.transaction do
306 limit_query = @objects.
307 except(:select, :distinct).
308 select("(%s) as read_length" %
309 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
312 limit_query.each do |record|
314 read_total += record.read_length.to_i
315 if read_total >= Rails.configuration.API.MaxIndexDatabaseRead
316 new_limit -= 1 if new_limit > 1
319 elsif new_limit >= @limit
323 @objects = @objects.limit(@limit)
324 # Force @objects to run its query inside this transaction.
325 @objects.each { |_| break }
330 return @attrs if @attrs
331 @attrs = params[resource_name]
334 elsif @attrs.is_a? String
335 @attrs = Oj.strict_load @attrs, symbol_keys: true
337 unless [Hash, ActionController::Parameters].include? @attrs.class
338 message = "No #{resource_name}"
339 if resource_name.index('_')
340 message << " (or #{resource_name.camelcase(:lower)})"
342 message << " hash provided with request"
343 raise ArgumentError.new(message)
345 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
346 @attrs.delete x.to_sym
348 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
355 if current_api_client_authorization
356 @read_auths << current_api_client_authorization
358 # Load reader tokens if this is a read request.
359 # If there are too many reader tokens, assume the request is malicious
361 if request.get? and params[:reader_tokens] and
362 params[:reader_tokens].size < 100
363 secrets = params[:reader_tokens].map { |t|
364 if t.is_a? String and t.starts_with? "v2/"
370 @read_auths += ApiClientAuthorization
372 .where('api_token IN (?) AND
373 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
377 @read_auths.select! { |auth| auth.scopes_allow_request? request }
378 @read_users = @read_auths.map(&:user).uniq
383 respond_to do |format|
384 format.json { send_error("Not logged in", status: 401) }
385 format.html { redirect_to '/auth/joshid' }
392 unless current_user and current_user.is_admin
393 send_error("Forbidden", status: 403)
397 def require_auth_scope
398 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
399 if require_login != false
400 send_error("Forbidden", status: 403)
406 def set_current_request_id
407 req_id = request.headers['X-Request-Id']
408 if !req_id || req_id.length < 1 || req_id.length > 1024
409 # Client-supplied ID is either missing or too long to be
410 # considered friendly.
411 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
413 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
414 Rails.logger.tagged(req_id) do
417 Thread.current[:request_id] = nil
420 def append_info_to_payload(payload)
422 payload[:request_id] = response.headers['X-Request-Id']
423 payload[:client_ipaddr] = @remote_ip
424 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
427 def disable_api_methods
428 if Rails.configuration.API.DisabledAPIs.include?(controller_name + "." + action_name)
429 send_error("Disabled", status: 404)
434 response.headers['Access-Control-Allow-Origin'] = '*'
435 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
436 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
437 response.headers['Access-Control-Max-Age'] = '86486400'
440 def respond_with_json_by_default
441 html_index = request.accepts.index(Mime[:html])
442 if html_index.nil? or request.accepts[0...html_index].include?(Mime[:json])
443 request.format = :json
448 controller_name.classify.constantize
451 def resource_name # params[] key used by client
452 controller_name.singularize
459 def find_object_by_uuid
460 if params[:id] and params[:id].match(/\D/)
461 params[:uuid] = params.delete :id
463 @where = { uuid: params[:uuid] }
469 find_objects_for_index
470 @object = @objects.first
473 def reload_object_before_update
474 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
475 # error when updating an object which was retrieved using a join.
476 if @object.andand.readonly?
477 @object = model_class.find_by_uuid(@objects.first.uuid)
481 def load_json_value(hash, key, must_be_class=nil)
482 return if hash[key].nil?
485 if val.is_a? ActionController::Parameters
486 val = val.to_unsafe_hash
487 elsif val.is_a? String
488 val = SafeJSON.load(val)
491 # When assigning a Hash to an ActionController::Parameters and then
492 # retrieve it, we get another ActionController::Parameters instead of
493 # a Hash. This doesn't happen with other types. This is why 'val' is
494 # being used to do type checking below.
495 if must_be_class and !val.is_a? must_be_class
496 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
500 def self.accept_attribute_as_json(attr, must_be_class=nil)
501 before_action lambda { accept_attribute_as_json attr, must_be_class }
503 accept_attribute_as_json :properties, Hash
504 accept_attribute_as_json :info, Hash
505 def accept_attribute_as_json(attr, must_be_class)
506 if params[resource_name] and [Hash, ActionController::Parameters].include?(resource_attrs.class)
507 if resource_attrs[attr].is_a? Hash
508 # Convert symbol keys to strings (in hashes provided by
510 resource_attrs[attr] = resource_attrs[attr].
511 with_indifferent_access.to_hash
513 load_json_value(resource_attrs, attr, must_be_class)
518 def self.accept_param_as_json(key, must_be_class=nil)
519 prepend_before_action lambda { load_json_value(params, key, must_be_class) }
521 accept_param_as_json :reader_tokens, Array
523 def object_list(model_class:)
524 if @objects.respond_to?(:except)
525 limit_database_read(model_class: model_class)
528 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
533 :items => @objects.as_api_response(nil, {select: @select})
536 list[:included] = @extra_included.as_api_response(nil, {select: @select})
539 when nil, '', 'exact'
540 if @objects.respond_to? :except
541 list[:items_available] = @objects.
542 except(:limit).except(:offset).
547 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
553 send_json object_list(model_class: self.model_class)
557 # Caveat: this is highly dependent on the proxy setup. YMMV.
558 if request.headers.key?('HTTP_X_REAL_IP') then
559 # We're behind a reverse proxy
560 @remote_ip = request.headers['HTTP_X_REAL_IP']
562 # Hopefully, we are not!
563 @remote_ip = request.env['REMOTE_ADDR']
567 def load_required_parameters
568 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
570 if info[:required] and not params.include?(key)
571 raise ArgumentError.new("#{key} parameter is required")
572 elsif info[:type] == 'boolean'
573 # Make sure params[key] is either true or false -- not a
574 # string, not nil, etc.
575 if not params.include?(key)
576 params[key] = info[:default]
577 elsif [false, 'false', '0', 0].include? params[key]
579 elsif [true, 'true', '1', 1].include? params[key]
582 raise TypeError.new("#{key} parameter must be a boolean, true or false")
589 def self._create_requires_parameters
591 ensure_unique_name: {
593 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
600 description: "Create object on a remote federated cluster instead of the current one.",
607 def self._update_requires_parameters
611 def self._index_requires_parameters
613 filters: { type: 'array', required: false },
614 where: { type: 'object', required: false },
615 order: { type: 'array', required: false },
616 select: { type: 'array', required: false },
617 distinct: { type: 'boolean', required: false },
618 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
619 offset: { type: 'integer', required: false, default: 0 },
620 count: { type: 'string', required: false, default: 'exact' },
623 description: "List objects on a remote federated cluster instead of the current one.",
630 def client_accepts_plain_text_stream
631 (request.headers['Accept'].split(' ') &
632 ['text/plain', '*/*']).count > 0
637 response = opts.first[:json]
638 if response.is_a?(Hash) &&
640 Thread.current[:request_starttime]
641 response[:_profile] = {
642 request_time: Time.now - Thread.current[:request_starttime]