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_filter :set_current_request_id
37 before_filter :disable_api_methods
38 before_filter :set_cors_headers
39 before_filter :respond_with_json_by_default
40 before_filter :remote_ip
41 before_filter :load_read_auths
42 before_filter :require_auth_scope, except: ERROR_ACTIONS
44 before_filter :catch_redirect_hint
45 before_filter(:find_object_by_uuid,
46 except: [:index, :create] + ERROR_ACTIONS)
47 before_filter :load_required_parameters
48 before_filter :load_limit_offset_order_params, only: [:index, :contents]
49 before_filter :load_where_param, only: [:index, :contents]
50 before_filter :load_filters_param, only: [:index, :contents]
51 before_filter :find_objects_for_index, :only => :index
52 before_filter :reload_object_before_update, :only => :update
53 before_filter(: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
83 def default_url_options
85 if Rails.configuration.host
86 options[:host] = Rails.configuration.host
88 if Rails.configuration.port
89 options[:port] = Rails.configuration.port
91 if Rails.configuration.protocol
92 options[:protocol] = Rails.configuration.protocol
98 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
99 @objects.each(&:eager_load_associations)
105 send_json @object.as_api_response(nil, select: @select)
109 @object = model_class.new resource_attrs
111 if @object.respond_to?(:name) && params[:ensure_unique_name]
112 @object.save_with_unique_name!
121 attrs_to_update = resource_attrs.reject { |k,v|
122 [:kind, :etag, :href].index k
124 @object.update_attributes! attrs_to_update
133 def catch_redirect_hint
135 if params.has_key?('redirect_to') then
136 session[:redirect_to] = params[:redirect_to]
141 def render_404_if_no_object
142 render_not_found "Object not found" if !@object
146 logger.error e.inspect
147 if !e.is_a? RequestError and (e.respond_to? :backtrace and e.backtrace)
148 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
150 if (@object.respond_to? :errors and
151 @object.errors.andand.full_messages.andand.any?)
152 errors = @object.errors.full_messages
153 logger.error errors.inspect
157 status = e.respond_to?(:http_status) ? e.http_status : 422
158 send_error(*errors, status: status)
161 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
162 logger.error e.inspect
163 send_error("Path not found", status: 404)
168 def send_error(*args)
169 if args.last.is_a? Hash
174 err[:errors] ||= args
175 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
176 status = err.delete(:status) || 422
177 logger.error "Error #{err[:error_token]}: #{status}"
178 send_json err, status: status
181 def send_json response, opts={}
182 # The obvious render(json: ...) forces a slow JSON encoder. See
183 # #3021 and commit logs. Might be fixed in Rails 4.1.
185 text: SafeJSON.dump(response).html_safe,
186 content_type: 'application/json'
190 def find_objects_for_index
191 @objects ||= model_class.readable_by(*@read_users, {:include_trash => (params[:include_trash] || 'untrash' == action_name)})
192 apply_where_limit_order_params
195 def apply_filters model_class=nil
196 model_class ||= self.model_class
197 @objects = model_class.apply_filters(@objects, @filters)
200 def apply_where_limit_order_params model_class=nil
201 model_class ||= self.model_class
202 apply_filters model_class
204 ar_table_name = @objects.table_name
205 if @where.is_a? Hash and @where.any?
207 @where.each do |attr,value|
208 if attr.to_s == 'any'
209 if value.is_a?(Array) and
210 value.length == 2 and
211 value[0] == 'contains' then
213 model_class.searchable_columns('ilike').each do |column|
214 # Including owner_uuid in an "any column" search will
215 # probably just return a lot of false positives.
216 next if column == 'owner_uuid'
217 ilikes << "#{ar_table_name}.#{column} ilike ?"
218 conditions << "%#{value[1]}%"
221 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
224 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
225 model_class.columns.collect(&:name).index(attr.to_s)
227 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
229 elsif value.is_a? Array
230 if value[0] == 'contains' and value.length == 2
231 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
232 conditions << "%#{value[1]}%"
234 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
237 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
238 conditions[0] << " and #{ar_table_name}.#{attr}=?"
240 elsif value.is_a? Hash
241 # Not quite the same thing as "equal?" but better than nothing?
244 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
245 conditions << "%#{k}%#{v}%"
251 if conditions.length > 1
252 conditions[0].sub!(/^1=1 and /, '')
259 unless action_name.in? %w(create update destroy)
260 # Map attribute names in @select to real column names, resolve
261 # those to fully-qualified SQL column names, and pass the
262 # resulting string to the select method.
263 columns_list = model_class.columns_for_attributes(@select).
264 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
265 @objects = @objects.select(columns_list.join(", "))
268 # This information helps clients understand what they're seeing
269 # (Workbench always expects it), but they can't select it explicitly
270 # because it's not an SQL column. Always add it.
271 # (This is harmless, given that clients can deduce what they're
272 # looking at by the returned UUID anyway.)
275 @objects = @objects.order(@orders.join ", ") if @orders.any?
276 @objects = @objects.limit(@limit)
277 @objects = @objects.offset(@offset)
278 @objects = @objects.uniq(@distinct) if not @distinct.nil?
281 # limit_database_read ensures @objects (which must be an
282 # ActiveRelation) does not return too many results to fit in memory,
283 # by previewing the results and calling @objects.limit() if
285 def limit_database_read(model_class:)
286 return if @limit == 0 || @limit == 1
287 model_class ||= self.model_class
288 limit_columns = model_class.limit_index_columns_read
289 limit_columns &= model_class.columns_for_attributes(@select) if @select
290 return if limit_columns.empty?
291 model_class.transaction do
292 limit_query = @objects.
293 except(:select, :distinct).
294 select("(%s) as read_length" %
295 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
298 limit_query.each do |record|
300 read_total += record.read_length.to_i
301 if read_total >= Rails.configuration.max_index_database_read
302 new_limit -= 1 if new_limit > 1
305 elsif new_limit >= @limit
309 @objects = @objects.limit(@limit)
310 # Force @objects to run its query inside this transaction.
311 @objects.each { |_| break }
316 return @attrs if @attrs
317 @attrs = params[resource_name]
318 if @attrs.is_a? String
319 @attrs = Oj.strict_load @attrs, symbol_keys: true
321 unless @attrs.is_a? Hash
322 message = "No #{resource_name}"
323 if resource_name.index('_')
324 message << " (or #{resource_name.camelcase(:lower)})"
326 message << " hash provided with request"
327 raise ArgumentError.new(message)
329 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
330 @attrs.delete x.to_sym
332 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
339 if current_api_client_authorization
340 @read_auths << current_api_client_authorization
342 # Load reader tokens if this is a read request.
343 # If there are too many reader tokens, assume the request is malicious
345 if request.get? and params[:reader_tokens] and
346 params[:reader_tokens].size < 100
347 @read_auths += ApiClientAuthorization
349 .where('api_token IN (?) AND
350 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
351 params[:reader_tokens])
354 @read_auths.select! { |auth| auth.scopes_allow_request? request }
355 @read_users = @read_auths.map(&:user).uniq
360 respond_to do |format|
361 format.json { send_error("Not logged in", status: 401) }
362 format.html { redirect_to '/auth/joshid' }
369 unless current_user and current_user.is_admin
370 send_error("Forbidden", status: 403)
374 def require_auth_scope
375 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
376 if require_login != false
377 send_error("Forbidden", status: 403)
383 def set_current_request_id
384 req_id = request.headers['X-Request-Id']
385 if !req_id || req_id.length < 1 || req_id.length > 1024
386 # Client-supplied ID is either missing or too long to be
387 # considered friendly.
388 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
390 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
392 Thread.current[:request_id] = nil
395 def append_info_to_payload(payload)
397 payload[:request_id] = response.headers['X-Request-Id']
398 payload[:client_ipaddr] = @remote_ip
399 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
402 def disable_api_methods
403 if Rails.configuration.disable_api_methods.
404 include?(controller_name + "." + action_name)
405 send_error("Disabled", status: 404)
410 response.headers['Access-Control-Allow-Origin'] = '*'
411 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
412 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
413 response.headers['Access-Control-Max-Age'] = '86486400'
416 def respond_with_json_by_default
417 html_index = request.accepts.index(Mime::HTML)
418 if html_index.nil? or request.accepts[0...html_index].include?(Mime::JSON)
419 request.format = :json
424 controller_name.classify.constantize
427 def resource_name # params[] key used by client
428 controller_name.singularize
435 def find_object_by_uuid
436 if params[:id] and params[:id].match(/\D/)
437 params[:uuid] = params.delete :id
439 @where = { uuid: params[:uuid] }
445 find_objects_for_index
446 @object = @objects.first
449 def reload_object_before_update
450 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
451 # error when updating an object which was retrieved using a join.
452 if @object.andand.readonly?
453 @object = model_class.find_by_uuid(@objects.first.uuid)
457 def load_json_value(hash, key, must_be_class=nil)
458 if hash[key].is_a? String
459 hash[key] = SafeJSON.load(hash[key])
460 if must_be_class and !hash[key].is_a? must_be_class
461 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
466 def self.accept_attribute_as_json(attr, must_be_class=nil)
467 before_filter lambda { accept_attribute_as_json attr, must_be_class }
469 accept_attribute_as_json :properties, Hash
470 accept_attribute_as_json :info, Hash
471 def accept_attribute_as_json(attr, must_be_class)
472 if params[resource_name] and resource_attrs.is_a? Hash
473 if resource_attrs[attr].is_a? Hash
474 # Convert symbol keys to strings (in hashes provided by
476 resource_attrs[attr] = resource_attrs[attr].
477 with_indifferent_access.to_hash
479 load_json_value(resource_attrs, attr, must_be_class)
484 def self.accept_param_as_json(key, must_be_class=nil)
485 prepend_before_filter lambda { load_json_value(params, key, must_be_class) }
487 accept_param_as_json :reader_tokens, Array
489 def object_list(model_class:)
490 if @objects.respond_to?(:except)
491 limit_database_read(model_class: model_class)
494 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
499 :items => @objects.as_api_response(nil, {select: @select})
502 when nil, '', 'exact'
503 if @objects.respond_to? :except
504 list[:items_available] = @objects.
505 except(:limit).except(:offset).
506 count(:id, distinct: true)
510 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
516 send_json object_list(model_class: self.model_class)
520 # Caveat: this is highly dependent on the proxy setup. YMMV.
521 if request.headers.key?('HTTP_X_REAL_IP') then
522 # We're behind a reverse proxy
523 @remote_ip = request.headers['HTTP_X_REAL_IP']
525 # Hopefully, we are not!
526 @remote_ip = request.env['REMOTE_ADDR']
530 def load_required_parameters
531 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
533 if info[:required] and not params.include?(key)
534 raise ArgumentError.new("#{key} parameter is required")
535 elsif info[:type] == 'boolean'
536 # Make sure params[key] is either true or false -- not a
537 # string, not nil, etc.
538 if not params.include?(key)
539 params[key] = info[:default]
540 elsif [false, 'false', '0', 0].include? params[key]
542 elsif [true, 'true', '1', 1].include? params[key]
545 raise TypeError.new("#{key} parameter must be a boolean, true or false")
552 def self._create_requires_parameters
554 ensure_unique_name: {
556 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
564 def self._update_requires_parameters
568 def self._index_requires_parameters
570 filters: { type: 'array', required: false },
571 where: { type: 'object', required: false },
572 order: { type: 'array', required: false },
573 select: { type: 'array', required: false },
574 distinct: { type: 'boolean', required: false },
575 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
576 offset: { type: 'integer', required: false, default: 0 },
577 count: { type: 'string', required: false, default: 'exact' },
581 def client_accepts_plain_text_stream
582 (request.headers['Accept'].split(' ') &
583 ['text/plain', '*/*']).count > 0
588 response = opts.first[:json]
589 if response.is_a?(Hash) &&
591 Thread.current[:request_starttime]
592 response[:_profile] = {
593 request_time: Time.now - Thread.current[:request_starttime]