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)
56 before_action :only_admin_can_bypass_federation
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 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
142 def only_admin_can_bypass_federation
143 unless !params[:bypass_federation] || current_user.andand.is_admin
144 send_error("The bypass_federation parameter is only permitted when current user is admin", status: 403)
149 logger.error e.inspect
150 if e.respond_to? :backtrace and e.backtrace
151 # This will be cleared by lograge after adding it to the log.
152 # Usually lograge would get the exceptions, but in our case we're catching
153 # all of them with exception handlers that cannot re-raise them because they
154 # don't get propagated.
155 Thread.current[:exception] = e.inspect
156 Thread.current[:backtrace] = e.backtrace.collect { |x| x + "\n" }.join('')
158 if (@object.respond_to? :errors and
159 @object.errors.andand.full_messages.andand.any?)
160 errors = @object.errors.full_messages
161 logger.error errors.inspect
165 status = e.respond_to?(:http_status) ? e.http_status : 422
166 send_error(*errors, status: status)
169 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
170 logger.error e.inspect
171 send_error("Path not found", status: 404)
175 send_json ({accepted: true}), status: 202
180 def bool_param(pname)
181 if params.include?(pname)
182 if params[pname].is_a?(Boolean)
185 logger.warn "Warning: received non-boolean value #{params[pname].inspect} for boolean parameter #{pname} on #{self.class.inspect}, treating as false."
191 def send_error(*args)
192 if args.last.is_a? Hash
197 err[:errors] ||= args
198 err[:errors].map! do |err|
199 err += " (" + Thread.current[:request_id] + ")"
201 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
202 status = err.delete(:status) || 422
203 logger.error "Error #{err[:error_token]}: #{status}"
204 send_json err, status: status
207 def send_json response, opts={}
208 # The obvious render(json: ...) forces a slow JSON encoder. See
209 # #3021 and commit logs. Might be fixed in Rails 4.1.
211 plain: SafeJSON.dump(response).html_safe,
212 content_type: 'application/json'
216 def find_objects_for_index
217 @objects ||= model_class.readable_by(*@read_users, {
218 :include_trash => (bool_param(:include_trash) || 'untrash' == action_name),
219 :include_old_versions => bool_param(:include_old_versions)
221 apply_where_limit_order_params
224 def apply_filters model_class=nil
225 model_class ||= self.model_class
226 @objects = model_class.apply_filters(@objects, @filters)
229 def apply_where_limit_order_params model_class=nil
230 model_class ||= self.model_class
231 apply_filters model_class
233 ar_table_name = @objects.table_name
234 if @where.is_a? Hash and @where.any?
236 @where.each do |attr,value|
237 if attr.to_s == 'any'
238 if value.is_a?(Array) and
239 value.length == 2 and
240 value[0] == 'contains' then
242 model_class.searchable_columns('ilike').each do |column|
243 # Including owner_uuid in an "any column" search will
244 # probably just return a lot of false positives.
245 next if column == 'owner_uuid'
246 ilikes << "#{ar_table_name}.#{column} ilike ?"
247 conditions << "%#{value[1]}%"
250 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
253 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
254 model_class.columns.collect(&:name).index(attr.to_s)
256 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
258 elsif value.is_a? Array
259 if value[0] == 'contains' and value.length == 2
260 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
261 conditions << "%#{value[1]}%"
263 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
266 elsif value.is_a? String or value.is_a? Integer or value == true or value == false
267 conditions[0] << " and #{ar_table_name}.#{attr}=?"
269 elsif value.is_a? Hash
270 # Not quite the same thing as "equal?" but better than nothing?
273 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
274 conditions << "%#{k}%#{v}%"
280 if conditions.length > 1
281 conditions[0].sub!(/^1=1 and /, '')
288 unless action_name.in? %w(create update destroy)
289 # Map attribute names in @select to real column names, resolve
290 # those to fully-qualified SQL column names, and pass the
291 # resulting string to the select method.
292 columns_list = model_class.columns_for_attributes(@select).
293 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
294 @objects = @objects.select(columns_list.join(", "))
297 # This information helps clients understand what they're seeing
298 # (Workbench always expects it), but they can't select it explicitly
299 # because it's not an SQL column. Always add it.
300 # (This is harmless, given that clients can deduce what they're
301 # looking at by the returned UUID anyway.)
304 @objects = @objects.order(@orders.join ", ") if @orders.any?
305 @objects = @objects.limit(@limit)
306 @objects = @objects.offset(@offset)
307 @objects = @objects.distinct(@distinct) if not @distinct.nil?
310 # limit_database_read ensures @objects (which must be an
311 # ActiveRelation) does not return too many results to fit in memory,
312 # by previewing the results and calling @objects.limit() if
314 def limit_database_read(model_class:)
315 return if @limit == 0 || @limit == 1
316 model_class ||= self.model_class
317 limit_columns = model_class.limit_index_columns_read
318 limit_columns &= model_class.columns_for_attributes(@select) if @select
319 return if limit_columns.empty?
320 model_class.transaction do
321 limit_query = @objects.
322 except(:select, :distinct).
323 select("(%s) as read_length" %
324 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
327 limit_query.each do |record|
329 read_total += record.read_length.to_i
330 if read_total >= Rails.configuration.API.MaxIndexDatabaseRead
331 new_limit -= 1 if new_limit > 1
334 elsif new_limit >= @limit
338 @objects = @objects.limit(@limit)
339 # Force @objects to run its query inside this transaction.
340 @objects.each { |_| break }
345 return @attrs if @attrs
346 @attrs = params[resource_name]
349 elsif @attrs.is_a? String
350 @attrs = Oj.strict_load @attrs, symbol_keys: true
352 unless [Hash, ActionController::Parameters].include? @attrs.class
353 message = "No #{resource_name}"
354 if resource_name.index('_')
355 message << " (or #{resource_name.camelcase(:lower)})"
357 message << " hash provided with request"
358 raise ArgumentError.new(message)
360 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
361 @attrs.delete x.to_sym
363 @attrs = @attrs.symbolize_keys if @attrs.is_a? ActiveSupport::HashWithIndifferentAccess
370 if current_api_client_authorization
371 @read_auths << current_api_client_authorization
373 # Load reader tokens if this is a read request.
374 # If there are too many reader tokens, assume the request is malicious
376 if request.get? and params[:reader_tokens] and
377 params[:reader_tokens].size < 100
378 secrets = params[:reader_tokens].map { |t|
379 if t.is_a? String and t.starts_with? "v2/"
385 @read_auths += ApiClientAuthorization
387 .where('api_token IN (?) AND
388 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
392 @read_auths.select! { |auth| auth.scopes_allow_request? request }
393 @read_users = @read_auths.map(&:user).uniq
398 respond_to do |format|
399 format.json { send_error("Not logged in", status: 401) }
400 format.html { redirect_to '/auth/joshid' }
407 unless current_user and current_user.is_admin
408 send_error("Forbidden", status: 403)
412 def require_auth_scope
413 unless current_user && @read_auths.any? { |auth| auth.user.andand.uuid == current_user.uuid }
414 if require_login != false
415 send_error("Forbidden", status: 403)
421 def set_current_request_id
422 req_id = request.headers['X-Request-Id']
423 if !req_id || req_id.length < 1 || req_id.length > 1024
424 # Client-supplied ID is either missing or too long to be
425 # considered friendly.
426 req_id = "req-" + Random::DEFAULT.rand(2**128).to_s(36)[0..19]
428 response.headers['X-Request-Id'] = Thread.current[:request_id] = req_id
429 Rails.logger.tagged(req_id) do
432 Thread.current[:request_id] = nil
435 def append_info_to_payload(payload)
437 payload[:request_id] = response.headers['X-Request-Id']
438 payload[:client_ipaddr] = @remote_ip
439 payload[:client_auth] = current_api_client_authorization.andand.uuid || nil
442 def disable_api_methods
443 if Rails.configuration.API.DisabledAPIs[controller_name + "." + action_name]
444 send_error("Disabled", status: 404)
449 response.headers['Access-Control-Allow-Origin'] = '*'
450 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
451 response.headers['Access-Control-Allow-Headers'] = 'Authorization, Content-Type'
452 response.headers['Access-Control-Max-Age'] = '86486400'
455 def respond_with_json_by_default
456 html_index = request.accepts.index(Mime[:html])
457 if html_index.nil? or request.accepts[0...html_index].include?(Mime[:json])
458 request.format = :json
463 controller_name.classify.constantize
466 def resource_name # params[] key used by client
467 controller_name.singularize
474 def find_object_by_uuid
475 if params[:id] and params[:id].match(/\D/)
476 params[:uuid] = params.delete :id
478 @where = { uuid: params[:uuid] }
484 find_objects_for_index
485 @object = @objects.first
488 def nullable_attributes
492 # Go code may send empty values (ie: empty string instead of NULL) that
493 # should be translated to NULL on the database.
494 def set_nullable_attrs_to_null
495 nullify_attrs(resource_attrs.to_hash).each do |k, v|
496 resource_attrs[k] = v
500 def nullify_attrs(a = {})
501 new_attrs = a.to_hash.symbolize_keys
502 (new_attrs.keys & nullable_attributes).each do |attr|
503 val = new_attrs[attr]
504 if (val.class == Integer && val == 0) || (val.class == String && val == "")
505 new_attrs[attr] = nil
511 def reload_object_before_update
512 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
513 # error when updating an object which was retrieved using a join.
514 if @object.andand.readonly?
515 @object = model_class.find_by_uuid(@objects.first.uuid)
519 def load_json_value(hash, key, must_be_class=nil)
520 return if hash[key].nil?
523 if val.is_a? ActionController::Parameters
524 val = val.to_unsafe_hash
525 elsif val.is_a? String
526 val = SafeJSON.load(val)
529 # When assigning a Hash to an ActionController::Parameters and then
530 # retrieve it, we get another ActionController::Parameters instead of
531 # a Hash. This doesn't happen with other types. This is why 'val' is
532 # being used to do type checking below.
533 if must_be_class and !val.is_a? must_be_class
534 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
538 def self.accept_attribute_as_json(attr, must_be_class=nil)
539 before_action lambda { accept_attribute_as_json attr, must_be_class }
541 accept_attribute_as_json :properties, Hash
542 accept_attribute_as_json :info, Hash
543 def accept_attribute_as_json(attr, must_be_class)
544 if params[resource_name] and [Hash, ActionController::Parameters].include?(resource_attrs.class)
545 if resource_attrs[attr].is_a? Hash
546 # Convert symbol keys to strings (in hashes provided by
548 resource_attrs[attr] = resource_attrs[attr].
549 with_indifferent_access.to_hash
551 load_json_value(resource_attrs, attr, must_be_class)
556 def self.accept_param_as_json(key, must_be_class=nil)
557 prepend_before_action lambda { load_json_value(params, key, must_be_class) }
559 accept_param_as_json :reader_tokens, Array
561 def object_list(model_class:)
562 if @objects.respond_to?(:except)
563 limit_database_read(model_class: model_class)
566 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
571 :items => @objects.as_api_response(nil, {select: @select})
574 list[:included] = @extra_included.as_api_response(nil, {select: @select})
577 when nil, '', 'exact'
578 if @objects.respond_to? :except
579 list[:items_available] = @objects.
580 except(:limit).except(:offset).
581 count(@distinct ? :id : '*')
585 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
591 send_json object_list(model_class: self.model_class)
595 # Caveat: this is highly dependent on the proxy setup. YMMV.
596 if request.headers.key?('HTTP_X_REAL_IP') then
597 # We're behind a reverse proxy
598 @remote_ip = request.headers['HTTP_X_REAL_IP']
600 # Hopefully, we are not!
601 @remote_ip = request.env['REMOTE_ADDR']
605 def load_required_parameters
606 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
608 if info[:required] and not params.include?(key)
609 raise ArgumentError.new("#{key} parameter is required")
610 elsif info[:type] == 'boolean'
611 # Make sure params[key] is either true or false -- not a
612 # string, not nil, etc.
613 if not params.include?(key)
614 params[key] = info[:default] || false
615 elsif [false, 'false', '0', 0].include? params[key]
617 elsif [true, 'true', '1', 1].include? params[key]
620 raise TypeError.new("#{key} parameter must be a boolean, true or false")
627 def self._create_requires_parameters
629 ensure_unique_name: {
631 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
638 description: "Create object on a remote federated cluster instead of the current one.",
645 def self._update_requires_parameters
649 def self._index_requires_parameters
651 filters: { type: 'array', required: false },
652 where: { type: 'object', required: false },
653 order: { type: 'array', required: false },
654 select: { type: 'array', required: false },
655 distinct: { type: 'boolean', required: false },
656 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
657 offset: { type: 'integer', required: false, default: 0 },
658 count: { type: 'string', required: false, default: 'exact' },
661 description: "List objects on a remote federated cluster instead of the current one.",
668 description: 'bypass federation behavior, list items from local instance database only'
673 def client_accepts_plain_text_stream
674 (request.headers['Accept'].split(' ') &
675 ['text/plain', '*/*']).count > 0
680 response = opts.first[:json]
681 if response.is_a?(Hash) &&
683 Thread.current[:request_starttime]
684 response[:_profile] = {
685 request_time: Time.now - Thread.current[:request_starttime]