1 # Copyright (C) The Arvados Authors. All rights reserved.
3 # SPDX-License-Identifier: AGPL-3.0
7 module ApiTemplateOverride
8 def allowed_to_render?(fieldset, field, model, options)
11 options[:select].include? field.to_s
18 class ActsAsApi::ApiTemplate
19 prepend ApiTemplateOverride
24 class ApplicationController < ActionController::Base
25 include ThemesForRails::ActionController
26 include CurrentApiClient
33 ERROR_ACTIONS = [:render_error, :render_not_found]
35 before_filter :disable_api_methods
36 before_filter :set_cors_headers
37 before_filter :respond_with_json_by_default
38 before_filter :remote_ip
39 before_filter :load_read_auths
40 before_filter :require_auth_scope, except: ERROR_ACTIONS
42 before_filter :catch_redirect_hint
43 before_filter(:find_object_by_uuid,
44 except: [:index, :create] + ERROR_ACTIONS)
45 before_filter :load_required_parameters
46 before_filter :load_limit_offset_order_params, only: [:index, :contents]
47 before_filter :load_where_param, only: [:index, :contents]
48 before_filter :load_filters_param, only: [:index, :contents]
49 before_filter :find_objects_for_index, :only => :index
50 before_filter :reload_object_before_update, :only => :update
51 before_filter(:render_404_if_no_object,
52 except: [:index, :create] + ERROR_ACTIONS)
54 theme Rails.configuration.arvados_theme
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
81 def default_url_options
82 if Rails.configuration.host
83 {:host => Rails.configuration.host}
90 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
91 @objects.each(&:eager_load_associations)
97 send_json @object.as_api_response(nil, select: @select)
101 @object = model_class.new resource_attrs
103 if @object.respond_to?(:name) && params[:ensure_unique_name]
104 @object.save_with_unique_name!
113 attrs_to_update = resource_attrs.reject { |k,v|
114 [:kind, :etag, :href].index k
116 @object.update_attributes! attrs_to_update
125 def catch_redirect_hint
127 if params.has_key?('redirect_to') then
128 session[:redirect_to] = params[:redirect_to]
133 def render_404_if_no_object
134 render_not_found "Object not found" if !@object
138 logger.error e.inspect
139 if e.respond_to? :backtrace and e.backtrace
140 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
142 if (@object.respond_to? :errors and
143 @object.errors.andand.full_messages.andand.any?)
144 errors = @object.errors.full_messages
145 logger.error errors.inspect
149 status = e.respond_to?(:http_status) ? e.http_status : 422
150 send_error(*errors, status: status)
153 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
154 logger.error e.inspect
155 send_error("Path not found", status: 404)
160 def send_error(*args)
161 if args.last.is_a? Hash
166 err[:errors] ||= args
167 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
168 status = err.delete(:status) || 422
169 logger.error "Error #{err[:error_token]}: #{status}"
170 send_json err, status: status
173 def send_json response, opts={}
174 # The obvious render(json: ...) forces a slow JSON encoder. See
175 # #3021 and commit logs. Might be fixed in Rails 4.1.
177 text: SafeJSON.dump(response).html_safe,
178 content_type: 'application/json'
182 def find_objects_for_index
183 @objects ||= model_class.readable_by(*@read_users)
184 apply_where_limit_order_params
187 def apply_filters model_class=nil
188 model_class ||= self.model_class
189 @objects = model_class.apply_filters(@objects, @filters)
192 def apply_where_limit_order_params model_class=nil
193 model_class ||= self.model_class
194 apply_filters model_class
196 ar_table_name = @objects.table_name
197 if @where.is_a? Hash and @where.any?
199 @where.each do |attr,value|
200 if attr.to_s == 'any'
201 if value.is_a?(Array) and
202 value.length == 2 and
203 value[0] == 'contains' then
205 model_class.searchable_columns('ilike').each do |column|
206 # Including owner_uuid in an "any column" search will
207 # probably just return a lot of false positives.
208 next if column == 'owner_uuid'
209 ilikes << "#{ar_table_name}.#{column} ilike ?"
210 conditions << "%#{value[1]}%"
213 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
216 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
217 model_class.columns.collect(&:name).index(attr.to_s)
219 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
221 elsif value.is_a? Array
222 if value[0] == 'contains' and value.length == 2
223 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
224 conditions << "%#{value[1]}%"
226 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
229 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
230 conditions[0] << " and #{ar_table_name}.#{attr}=?"
232 elsif value.is_a? Hash
233 # Not quite the same thing as "equal?" but better than nothing?
236 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
237 conditions << "%#{k}%#{v}%"
243 if conditions.length > 1
244 conditions[0].sub!(/^1=1 and /, '')
251 unless action_name.in? %w(create update destroy)
252 # Map attribute names in @select to real column names, resolve
253 # those to fully-qualified SQL column names, and pass the
254 # resulting string to the select method.
255 columns_list = model_class.columns_for_attributes(@select).
256 map { |s| "#{ar_table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
257 @objects = @objects.select(columns_list.join(", "))
260 # This information helps clients understand what they're seeing
261 # (Workbench always expects it), but they can't select it explicitly
262 # because it's not an SQL column. Always add it.
263 # (This is harmless, given that clients can deduce what they're
264 # looking at by the returned UUID anyway.)
267 @objects = @objects.order(@orders.join ", ") if @orders.any?
268 @objects = @objects.limit(@limit)
269 @objects = @objects.offset(@offset)
270 @objects = @objects.uniq(@distinct) if not @distinct.nil?
273 # limit_database_read ensures @objects (which must be an
274 # ActiveRelation) does not return too many results to fit in memory,
275 # by previewing the results and calling @objects.limit() if
277 def limit_database_read(model_class:)
278 return if @limit == 0 || @limit == 1
279 model_class ||= self.model_class
280 limit_columns = model_class.limit_index_columns_read
281 limit_columns &= model_class.columns_for_attributes(@select) if @select
282 return if limit_columns.empty?
283 model_class.transaction do
284 limit_query = @objects.
285 except(:select, :distinct).
286 select("(%s) as read_length" %
287 limit_columns.map { |s| "octet_length(#{model_class.table_name}.#{s})" }.join(" + "))
290 limit_query.each do |record|
292 read_total += record.read_length.to_i
293 if read_total >= Rails.configuration.max_index_database_read
294 new_limit -= 1 if new_limit > 1
297 elsif new_limit >= @limit
301 @objects = @objects.limit(@limit)
302 # Force @objects to run its query inside this transaction.
303 @objects.each { |_| break }
308 return @attrs if @attrs
309 @attrs = params[resource_name]
310 if @attrs.is_a? String
311 @attrs = Oj.strict_load @attrs, symbol_keys: true
313 unless @attrs.is_a? Hash
314 message = "No #{resource_name}"
315 if resource_name.index('_')
316 message << " (or #{resource_name.camelcase(:lower)})"
318 message << " hash provided with request"
319 raise ArgumentError.new(message)
321 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
322 @attrs.delete x.to_sym
324 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
331 if current_api_client_authorization
332 @read_auths << current_api_client_authorization
334 # Load reader tokens if this is a read request.
335 # If there are too many reader tokens, assume the request is malicious
337 if request.get? and params[:reader_tokens] and
338 params[:reader_tokens].size < 100
339 @read_auths += ApiClientAuthorization
341 .where('api_token IN (?) AND
342 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
343 params[:reader_tokens])
346 @read_auths.select! { |auth| auth.scopes_allow_request? request }
347 @read_users = @read_auths.map { |auth| auth.user }.uniq
352 respond_to do |format|
353 format.json { send_error("Not logged in", status: 401) }
354 format.html { redirect_to '/auth/joshid' }
361 unless current_user and current_user.is_admin
362 send_error("Forbidden", status: 403)
366 def require_auth_scope
367 if @read_auths.empty?
368 if require_login != false
369 send_error("Forbidden", status: 403)
375 def disable_api_methods
376 if Rails.configuration.disable_api_methods.
377 include?(controller_name + "." + action_name)
378 send_error("Disabled", status: 404)
383 response.headers['Access-Control-Allow-Origin'] = '*'
384 response.headers['Access-Control-Allow-Methods'] = 'GET, HEAD, PUT, POST, DELETE'
385 response.headers['Access-Control-Allow-Headers'] = 'Authorization'
386 response.headers['Access-Control-Max-Age'] = '86486400'
389 def respond_with_json_by_default
390 html_index = request.accepts.index(Mime::HTML)
391 if html_index.nil? or request.accepts[0...html_index].include?(Mime::JSON)
392 request.format = :json
397 controller_name.classify.constantize
400 def resource_name # params[] key used by client
401 controller_name.singularize
408 def find_object_by_uuid
409 if params[:id] and params[:id].match(/\D/)
410 params[:uuid] = params.delete :id
412 @where = { uuid: params[:uuid] }
418 find_objects_for_index
419 @object = @objects.first
422 def reload_object_before_update
423 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
424 # error when updating an object which was retrieved using a join.
425 if @object.andand.readonly?
426 @object = model_class.find_by_uuid(@objects.first.uuid)
430 def load_json_value(hash, key, must_be_class=nil)
431 if hash[key].is_a? String
432 hash[key] = SafeJSON.load(hash[key])
433 if must_be_class and !hash[key].is_a? must_be_class
434 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
439 def self.accept_attribute_as_json(attr, must_be_class=nil)
440 before_filter lambda { accept_attribute_as_json attr, must_be_class }
442 accept_attribute_as_json :properties, Hash
443 accept_attribute_as_json :info, Hash
444 def accept_attribute_as_json(attr, must_be_class)
445 if params[resource_name] and resource_attrs.is_a? Hash
446 if resource_attrs[attr].is_a? Hash
447 # Convert symbol keys to strings (in hashes provided by
449 resource_attrs[attr] = resource_attrs[attr].
450 with_indifferent_access.to_hash
452 load_json_value(resource_attrs, attr, must_be_class)
457 def self.accept_param_as_json(key, must_be_class=nil)
458 prepend_before_filter lambda { load_json_value(params, key, must_be_class) }
460 accept_param_as_json :reader_tokens, Array
462 def object_list(model_class:)
463 if @objects.respond_to?(:except)
464 limit_database_read(model_class: model_class)
467 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
472 :items => @objects.as_api_response(nil, {select: @select})
475 when nil, '', 'exact'
476 if @objects.respond_to? :except
477 list[:items_available] = @objects.
478 except(:limit).except(:offset).
479 count(:id, distinct: true)
483 raise ArgumentError.new("count parameter must be 'exact' or 'none'")
489 send_json object_list(model_class: self.model_class)
493 # Caveat: this is highly dependent on the proxy setup. YMMV.
494 if request.headers.key?('HTTP_X_REAL_IP') then
495 # We're behind a reverse proxy
496 @remote_ip = request.headers['HTTP_X_REAL_IP']
498 # Hopefully, we are not!
499 @remote_ip = request.env['REMOTE_ADDR']
503 def load_required_parameters
504 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
506 if info[:required] and not params.include?(key)
507 raise ArgumentError.new("#{key} parameter is required")
508 elsif info[:type] == 'boolean'
509 # Make sure params[key] is either true or false -- not a
510 # string, not nil, etc.
511 if not params.include?(key)
512 params[key] = info[:default]
513 elsif [false, 'false', '0', 0].include? params[key]
515 elsif [true, 'true', '1', 1].include? params[key]
518 raise TypeError.new("#{key} parameter must be a boolean, true or false")
525 def self._create_requires_parameters
527 ensure_unique_name: {
529 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
537 def self._index_requires_parameters
539 filters: { type: 'array', required: false },
540 where: { type: 'object', required: false },
541 order: { type: 'array', required: false },
542 select: { type: 'array', required: false },
543 distinct: { type: 'boolean', required: false },
544 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
545 offset: { type: 'integer', required: false, default: 0 },
546 count: { type: 'string', required: false, default: 'exact' },
550 def client_accepts_plain_text_stream
551 (request.headers['Accept'].split(' ') &
552 ['text/plain', '*/*']).count > 0
557 response = opts.first[:json]
558 if response.is_a?(Hash) &&
560 Thread.current[:request_starttime]
561 response[:_profile] = {
562 request_time: Time.now - Thread.current[:request_starttime]