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 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 exturl = URI.parse(Rails.configuration.Services["Controller"]["ExternalURL"])
85 options[:host] = exturl.host
86 options[:port] = exturl.port
87 options[:protocol] = exturl.scheme
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)
161 send_json ({accepted: true}), status: 202
166 def send_error(*args)
167 if args.last.is_a? Hash
172 err[:errors] ||= args
173 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
174 status = err.delete(:status) || 422
175 logger.error "Error #{err[:error_token]}: #{status}"
176 send_json err, status: status
179 def send_json response, opts={}
180 # The obvious render(json: ...) forces a slow JSON encoder. See
181 # #3021 and commit logs. Might be fixed in Rails 4.1.
183 plain: SafeJSON.dump(response).html_safe,
184 content_type: 'application/json'
188 def find_objects_for_index
189 @objects ||= model_class.readable_by(*@read_users, {
190 :include_trash => (params[:include_trash] || 'untrash' == action_name),
191 :include_old_versions => params[:include_old_versions]
193 apply_where_limit_order_params
196 def apply_filters model_class=nil
197 model_class ||= self.model_class
198 @objects = model_class.apply_filters(@objects, @filters)
201 def apply_where_limit_order_params model_class=nil
202 model_class ||= self.model_class
203 apply_filters model_class
205 ar_table_name = @objects.table_name
206 if @where.is_a? Hash and @where.any?
208 @where.each do |attr,value|
209 if attr.to_s == 'any'
210 if value.is_a?(Array) and
211 value.length == 2 and
212 value[0] == 'contains' then
214 model_class.searchable_columns('ilike').each do |column|
215 # Including owner_uuid in an "any column" search will
216 # probably just return a lot of false positives.
217 next if column == 'owner_uuid'
218 ilikes << "#{ar_table_name}.#{column} ilike ?"
219 conditions << "%#{value[1]}%"
222 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
225 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
226 model_class.columns.collect(&:name).index(attr.to_s)
228 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
230 elsif value.is_a? Array
231 if value[0] == 'contains' and value.length == 2
232 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
233 conditions << "%#{value[1]}%"
235 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
238 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
239 conditions[0] << " and #{ar_table_name}.#{attr}=?"
241 elsif value.is_a? Hash
242 # Not quite the same thing as "equal?" but better than nothing?
245 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
246 conditions << "%#{k}%#{v}%"
252 if conditions.length > 1
253 conditions[0].sub!(/^1=1 and /, '')
260 unless action_name.in? %w(create update destroy)
261 # Map attribute names in @select to real column names, resolve
262 # those to fully-qualified SQL column names, and pass the
263 # resulting string to the select method.
264 columns_list = model_class.columns_for_attributes(@select).
265 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
266 @objects = @objects.select(columns_list.join(", "))
269 # This information helps clients understand what they're seeing
270 # (Workbench always expects it), but they can't select it explicitly
271 # because it's not an SQL column. Always add it.
272 # (This is harmless, given that clients can deduce what they're
273 # looking at by the returned UUID anyway.)
276 @objects = @objects.order(@orders.join ", ") if @orders.any?
277 @objects = @objects.limit(@limit)
278 @objects = @objects.offset(@offset)
279 @objects = @objects.distinct(@distinct) if not @distinct.nil?
282 # limit_database_read ensures @objects (which must be an
283 # ActiveRelation) does not return too many results to fit in memory,
284 # by previewing the results and calling @objects.limit() if
286 def limit_database_read(model_class:)
287 return if @limit == 0 || @limit == 1
288 model_class ||= self.model_class
289 limit_columns = model_class.limit_index_columns_read
290 limit_columns &= model_class.columns_for_attributes(@select) if @select
291 return if limit_columns.empty?
292 model_class.transaction do
293 limit_query = @objects.
294 except(:select, :distinct).
295 select("(%s) as read_length" %
296 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
299 limit_query.each do |record|
301 read_total += record.read_length.to_i
302 if read_total >= Rails.configuration.API["MaxIndexDatabaseRead"]
303 new_limit -= 1 if new_limit > 1
306 elsif new_limit >= @limit
310 @objects = @objects.limit(@limit)
311 # Force @objects to run its query inside this transaction.
312 @objects.each { |_| break }
317 return @attrs if @attrs
318 @attrs = params[resource_name]
321 elsif @attrs.is_a? String
322 @attrs = Oj.strict_load @attrs, symbol_keys: true
324 unless [Hash, ActionController::Parameters].include? @attrs.class
325 message = "No #{resource_name}"
326 if resource_name.index('_')
327 message << " (or #{resource_name.camelcase(:lower)})"
329 message << " hash provided with request"
330 raise ArgumentError.new(message)
332 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
333 @attrs.delete x.to_sym
335 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
342 if current_api_client_authorization
343 @read_auths << current_api_client_authorization
345 # Load reader tokens if this is a read request.
346 # If there are too many reader tokens, assume the request is malicious
348 if request.get? and params[:reader_tokens] and
349 params[:reader_tokens].size < 100
350 secrets = params[:reader_tokens].map { |t|
351 if t.is_a? String and t.starts_with? "v2/"
357 @read_auths += ApiClientAuthorization
359 .where('api_token IN (?) AND
360 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
364 @read_auths.select! { |auth| auth.scopes_allow_request? request }
365 @read_users = @read_auths.map(&:user).uniq
370 respond_to do |format|
371 format.json { send_error("Not logged in", status: 401) }
372 format.html { redirect_to '/auth/joshid' }
379 unless current_user and current_user.is_admin
380 send_error("Forbidden", status: 403)
384 def require_auth_scope
385 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
386 if require_login != false
387 send_error("Forbidden", status: 403)
393 def set_current_request_id
394 req_id = request.headers['X-Request-Id']
395 if !req_id || req_id.length < 1 || req_id.length > 1024
396 # Client-supplied ID is either missing or too long to be
397 # considered friendly.
398 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
400 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
401 Rails.logger.tagged(req_id) do
404 Thread.current[:request_id] = nil
407 def append_info_to_payload(payload)
409 payload[:request_id] = response.headers['X-Request-Id']
410 payload[:client_ipaddr] = @remote_ip
411 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
414 def disable_api_methods
415 if Rails.configuration.API["DisabledAPIs"].
416 include?(controller_name + "." + action_name)
417 send_error("Disabled", status: 404)
422 response.headers['Access-Control-Allow-Origin'] = '*'
423 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
424 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
425 response.headers['Access-Control-Max-Age'] = '86486400'
428 def respond_with_json_by_default
429 html_index = request.accepts.index(Mime[:html])
430 if html_index.nil? or request.accepts[0...html_index].include?(Mime[:json])
431 request.format = :json
436 controller_name.classify.constantize
439 def resource_name # params[] key used by client
440 controller_name.singularize
447 def find_object_by_uuid
448 if params[:id] and params[:id].match(/\D/)
449 params[:uuid] = params.delete :id
451 @where = { uuid: params[:uuid] }
457 find_objects_for_index
458 @object = @objects.first
461 def reload_object_before_update
462 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
463 # error when updating an object which was retrieved using a join.
464 if @object.andand.readonly?
465 @object = model_class.find_by_uuid(@objects.first.uuid)
469 def load_json_value(hash, key, must_be_class=nil)
470 if hash[key].is_a? String
471 hash[key] = SafeJSON.load(hash[key])
472 if must_be_class and !hash[key].is_a? must_be_class
473 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
478 def self.accept_attribute_as_json(attr, must_be_class=nil)
479 before_action lambda { accept_attribute_as_json attr, must_be_class }
481 accept_attribute_as_json :properties, Hash
482 accept_attribute_as_json :info, Hash
483 def accept_attribute_as_json(attr, must_be_class)
484 if params[resource_name] and resource_attrs.is_a? Hash
485 if resource_attrs[attr].is_a? Hash
486 # Convert symbol keys to strings (in hashes provided by
488 resource_attrs[attr] = resource_attrs[attr].
489 with_indifferent_access.to_hash
491 load_json_value(resource_attrs, attr, must_be_class)
496 def self.accept_param_as_json(key, must_be_class=nil)
497 prepend_before_action lambda { load_json_value(params, key, must_be_class) }
499 accept_param_as_json :reader_tokens, Array
501 def object_list(model_class:)
502 if @objects.respond_to?(:except)
503 limit_database_read(model_class: model_class)
506 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
511 :items => @objects.as_api_response(nil, {select: @select})
514 list[:included] = @extra_included.as_api_response(nil, {select: @select})
517 when nil, '', 'exact'
518 if @objects.respond_to? :except
519 list[:items_available] = @objects.
520 except(:limit).except(:offset).
525 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
531 send_json object_list(model_class: self.model_class)
535 # Caveat: this is highly dependent on the proxy setup. YMMV.
536 if request.headers.key?('HTTP_X_REAL_IP') then
537 # We're behind a reverse proxy
538 @remote_ip = request.headers['HTTP_X_REAL_IP']
540 # Hopefully, we are not!
541 @remote_ip = request.env['REMOTE_ADDR']
545 def load_required_parameters
546 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
548 if info[:required] and not params.include?(key)
549 raise ArgumentError.new("#{key} parameter is required")
550 elsif info[:type] == 'boolean'
551 # Make sure params[key] is either true or false -- not a
552 # string, not nil, etc.
553 if not params.include?(key)
554 params[key] = info[:default]
555 elsif [false, 'false', '0', 0].include? params[key]
557 elsif [true, 'true', '1', 1].include? params[key]
560 raise TypeError.new("#{key} parameter must be a boolean, true or false")
567 def self._create_requires_parameters
569 ensure_unique_name: {
571 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
578 description: "Create object on a remote federated cluster instead of the current one.",
585 def self._update_requires_parameters
589 def self._index_requires_parameters
591 filters: { type: 'array', required: false },
592 where: { type: 'object', required: false },
593 order: { type: 'array', required: false },
594 select: { type: 'array', required: false },
595 distinct: { type: 'boolean', required: false },
596 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
597 offset: { type: 'integer', required: false, default: 0 },
598 count: { type: 'string', required: false, default: 'exact' },
601 description: "List objects on a remote federated cluster instead of the current one.",
608 def client_accepts_plain_text_stream
609 (request.headers['Accept'].split(' ') &
610 ['text/plain', '*/*']).count > 0
615 response = opts.first[:json]
616 if response.is_a?(Hash) &&
618 Thread.current[:request_starttime]
619 response[:_profile] = {
620 request_time: Time.now - Thread.current[:request_starttime]