1 module ApiTemplateOverride
2 def allowed_to_render?(fieldset, field, model, options)
5 options[:select].include? field.to_s
12 class ActsAsApi::ApiTemplate
13 prepend ApiTemplateOverride
17 require 'record_filters'
19 class ApplicationController < ActionController::Base
20 include CurrentApiClient
21 include ThemesForRails::ActionController
28 ERROR_ACTIONS = [:render_error, :render_not_found]
30 before_filter :respond_with_json_by_default
31 before_filter :remote_ip
32 before_filter :load_read_auths
33 before_filter :require_auth_scope, except: ERROR_ACTIONS
35 before_filter :catch_redirect_hint
36 before_filter(:find_object_by_uuid,
37 except: [:index, :create] + ERROR_ACTIONS)
38 before_filter :load_required_parameters
39 before_filter :load_limit_offset_order_params, only: [:index, :contents]
40 before_filter :load_where_param, only: [:index, :contents]
41 before_filter :load_filters_param, only: [:index, :contents]
42 before_filter :find_objects_for_index, :only => :index
43 before_filter :reload_object_before_update, :only => :update
44 before_filter(:render_404_if_no_object,
45 except: [:index, :create] + ERROR_ACTIONS)
49 attr_accessor :resource_attrs
52 rescue_from(Exception,
53 ArvadosModel::PermissionDeniedError,
54 :with => :render_error)
55 rescue_from(ActiveRecord::RecordNotFound,
56 ActionController::RoutingError,
57 ActionController::UnknownController,
58 AbstractController::ActionNotFound,
59 :with => :render_not_found)
62 def default_url_options
63 if Rails.configuration.host
64 {:host => Rails.configuration.host}
71 @objects.uniq!(&:id) if @select.nil? or @select.include? "id"
72 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
73 @objects.each(&:eager_load_associations)
79 render json: @object.as_api_response(nil, select: @select)
83 @object = model_class.new resource_attrs
85 if @object.respond_to? :name and params[:ensure_unique_name]
86 # Record the original name. See below.
87 name_stem = @object.name
93 rescue ActiveRecord::RecordNotUnique => rn
94 raise unless params[:ensure_unique_name]
96 # Dig into the error to determine if it is specifically calling out a
97 # (owner_uuid, name) uniqueness violation. In this specific case, and
98 # the client requested a unique name with ensure_unique_name==true,
99 # update the name field and try to save again. Loop as necessary to
100 # discover a unique name. It is necessary to handle name choosing at
101 # this level (as opposed to the client) to ensure that record creation
102 # never fails due to a race condition.
103 raise unless rn.original_exception.is_a? PG::UniqueViolation
105 # Unfortunately ActiveRecord doesn't abstract out any of the
106 # necessary information to figure out if this the error is actually
107 # the specific case where we want to apply the ensure_unique_name
108 # behavior, so the following code is specialized to Postgres.
109 err = rn.original_exception
110 detail = err.result.error_field(PG::Result::PG_DIAG_MESSAGE_DETAIL)
111 raise unless /^Key \(owner_uuid, name\)=\([a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{15}, .*?\) already exists\./.match detail
113 # OK, this exception really is just a unique name constraint
114 # violation, and we've been asked to ensure_unique_name.
117 @object.name = "#{name_stem} (#{counter})"
124 attrs_to_update = resource_attrs.reject { |k,v|
125 [:kind, :etag, :href].index k
127 @object.update_attributes! attrs_to_update
136 def catch_redirect_hint
138 if params.has_key?('redirect_to') then
139 session[:redirect_to] = params[:redirect_to]
144 def render_404_if_no_object
145 render_not_found "Object not found" if !@object
149 logger.error e.inspect
150 if e.respond_to? :backtrace and e.backtrace
151 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
153 if (@object.respond_to? :errors and
154 @object.errors.andand.full_messages.andand.any?)
155 errors = @object.errors.full_messages
156 logger.error errors.inspect
160 status = e.respond_to?(:http_status) ? e.http_status : 422
161 send_error(*errors, status: status)
164 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
165 logger.error e.inspect
166 send_error("Path not found", status: 404)
171 def send_error(*args)
172 if args.last.is_a? Hash
177 err[:errors] ||= args
178 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
179 status = err.delete(:status) || 422
180 logger.error "Error #{err[:error_token]}: #{status}"
181 render json: err, status: status
184 def find_objects_for_index
185 @objects ||= model_class.readable_by(*@read_users)
186 apply_where_limit_order_params
189 def apply_filters model_class=nil
190 model_class ||= self.model_class
191 ft = record_filters @filters, model_class
192 if ft[:cond_out].any?
193 @objects = @objects.where('(' + ft[:cond_out].join(') AND (') + ')',
198 def apply_where_limit_order_params *args
201 ar_table_name = @objects.table_name
202 if @where.is_a? Hash and @where.any?
204 @where.each do |attr,value|
205 if attr.to_s == 'any'
206 if value.is_a?(Array) and
207 value.length == 2 and
208 value[0] == 'contains' then
210 model_class.searchable_columns('ilike').each do |column|
211 # Including owner_uuid in an "any column" search will
212 # probably just return a lot of false positives.
213 next if column == 'owner_uuid'
214 ilikes << "#{ar_table_name}.#{column} ilike ?"
215 conditions << "%#{value[1]}%"
218 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
221 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
222 model_class.columns.collect(&:name).index(attr.to_s)
224 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
226 elsif value.is_a? Array
227 if value[0] == 'contains' and value.length == 2
228 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
229 conditions << "%#{value[1]}%"
231 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
234 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
235 conditions[0] << " and #{ar_table_name}.#{attr}=?"
237 elsif value.is_a? Hash
238 # Not quite the same thing as "equal?" but better than nothing?
241 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
242 conditions << "%#{k}%#{v}%"
248 if conditions.length > 1
249 conditions[0].sub!(/^1=1 and /, '')
256 unless action_name.in? %w(create update destroy)
257 # Map attribute names in @select to real column names, resolve
258 # those to fully-qualified SQL column names, and pass the
259 # resulting string to the select method.
260 api_column_map = model_class.attributes_required_columns
261 columns_list = @select.
262 flat_map { |attr| api_column_map[attr] }.
264 map { |s| "#{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?
282 return @attrs if @attrs
283 @attrs = params[resource_name]
284 if @attrs.is_a? String
285 @attrs = Oj.load @attrs, symbol_keys: true
287 unless @attrs.is_a? Hash
288 message = "No #{resource_name}"
289 if resource_name.index('_')
290 message << " (or #{resource_name.camelcase(:lower)})"
292 message << " hash provided with request"
293 raise ArgumentError.new(message)
295 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
296 @attrs.delete x.to_sym
298 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
305 if current_api_client_authorization
306 @read_auths << current_api_client_authorization
308 # Load reader tokens if this is a read request.
309 # If there are too many reader tokens, assume the request is malicious
311 if request.get? and params[:reader_tokens] and
312 params[:reader_tokens].size < 100
313 @read_auths += ApiClientAuthorization
315 .where('api_token IN (?) AND
316 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
317 params[:reader_tokens])
320 @read_auths.select! { |auth| auth.scopes_allow_request? request }
321 @read_users = @read_auths.map { |auth| auth.user }.uniq
326 respond_to do |format|
327 format.json { send_error("Not logged in", status: 401) }
328 format.html { redirect_to '/auth/joshid' }
335 unless current_user and current_user.is_admin
336 send_error("Forbidden", status: 403)
340 def require_auth_scope
341 if @read_auths.empty?
342 if require_login != false
343 send_error("Forbidden", status: 403)
349 def respond_with_json_by_default
350 html_index = request.accepts.index(Mime::HTML)
351 if html_index.nil? or request.accepts[0...html_index].include?(Mime::JSON)
352 request.format = :json
357 controller_name.classify.constantize
360 def resource_name # params[] key used by client
361 controller_name.singularize
368 def find_object_by_uuid
369 if params[:id] and params[:id].match /\D/
370 params[:uuid] = params.delete :id
372 @where = { uuid: params[:uuid] }
378 find_objects_for_index
379 @object = @objects.first
382 def reload_object_before_update
383 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
384 # error when updating an object which was retrieved using a join.
385 if @object.andand.readonly?
386 @object = model_class.find_by_uuid(@objects.first.uuid)
390 def load_json_value(hash, key, must_be_class=nil)
391 if hash[key].is_a? String
392 hash[key] = Oj.load(hash[key], symbol_keys: false)
393 if must_be_class and !hash[key].is_a? must_be_class
394 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
399 def self.accept_attribute_as_json(attr, must_be_class=nil)
400 before_filter lambda { accept_attribute_as_json attr, must_be_class }
402 accept_attribute_as_json :properties, Hash
403 accept_attribute_as_json :info, Hash
404 def accept_attribute_as_json(attr, must_be_class)
405 if params[resource_name] and resource_attrs.is_a? Hash
406 if resource_attrs[attr].is_a? Hash
407 # Convert symbol keys to strings (in hashes provided by
409 resource_attrs[attr] = resource_attrs[attr].
410 with_indifferent_access.to_hash
412 load_json_value(resource_attrs, attr, must_be_class)
417 def self.accept_param_as_json(key, must_be_class=nil)
418 prepend_before_filter lambda { load_json_value(params, key, must_be_class) }
420 accept_param_as_json :reader_tokens, Array
424 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
429 :items => @objects.as_api_response(nil, {select: @select})
431 if @objects.respond_to? :except
432 @object_list[:items_available] = @objects.
433 except(:limit).except(:offset).
434 count(:id, distinct: true)
436 render json: @object_list
440 # Caveat: this is highly dependent on the proxy setup. YMMV.
441 if request.headers.has_key?('HTTP_X_REAL_IP') then
442 # We're behind a reverse proxy
443 @remote_ip = request.headers['HTTP_X_REAL_IP']
445 # Hopefully, we are not!
446 @remote_ip = request.env['REMOTE_ADDR']
450 def load_required_parameters
451 (self.class.send "_#{params[:action]}_requires_parameters" rescue {}).
453 if info[:required] and not params.include?(key)
454 raise ArgumentError("#{key} parameter is required")
455 elsif info[:type] == 'boolean'
456 # Make sure params[key] is either true or false -- not a
457 # string, not nil, etc.
458 if not params.include?(key)
459 params[key] = info[:default]
460 elsif [false, 'false'].include? params[key]
462 elsif [true, 'true'].include? params[key]
465 raise TypeError("#{key} parameter must be a boolean, true or false")
472 def self._create_requires_parameters
474 ensure_unique_name: {
476 description: "Adjust name to ensure uniqueness instead of returning an error on (owner_uuid, name) collision.",
483 def self._index_requires_parameters
485 filters: { type: 'array', required: false },
486 where: { type: 'object', required: false },
487 order: { type: 'array', required: false },
488 select: { type: 'array', required: false },
489 distinct: { type: 'boolean', required: false },
490 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
491 offset: { type: 'integer', required: false, default: 0 },
495 def client_accepts_plain_text_stream
496 (request.headers['Accept'].split(' ') &
497 ['text/plain', '*/*']).count > 0
502 response = opts.first[:json]
503 if response.is_a?(Hash) &&
505 Thread.current[:request_starttime]
506 response[:_profile] = {
507 request_time: Time.now - Thread.current[:request_starttime]
515 return Rails.configuration.arvados_theme