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_limit_offset_order_params, only: [:index, :contents]
39 before_filter :load_where_param, only: [:index, :contents]
40 before_filter :load_filters_param, only: [:index, :contents]
41 before_filter :find_objects_for_index, :only => :index
42 before_filter :reload_object_before_update, :only => :update
43 before_filter(:render_404_if_no_object,
44 except: [:index, :create] + ERROR_ACTIONS)
48 attr_accessor :resource_attrs
51 rescue_from(Exception,
52 ArvadosModel::PermissionDeniedError,
53 :with => :render_error)
54 rescue_from(ActiveRecord::RecordNotFound,
55 ActionController::RoutingError,
56 ActionController::UnknownController,
57 AbstractController::ActionNotFound,
58 :with => :render_not_found)
61 def default_url_options
62 if Rails.configuration.host
63 {:host => Rails.configuration.host}
70 @objects.uniq!(&:id) if @select.nil? or @select.include? "id"
71 if params[:eager] and params[:eager] != '0' and params[:eager] != 0 and params[:eager] != ''
72 @objects.each(&:eager_load_associations)
78 render json: @object.as_api_response(nil, select: @select)
82 @object = model_class.new resource_attrs
84 if @object.respond_to? :name and params[:ensure_unique_name]
85 # Record the original name. See below.
86 name_stem = @object.name
92 rescue ActiveRecord::RecordNotUnique => rn
93 raise unless params[:ensure_unique_name]
95 # Dig into the error to determine if it is specifically calling out a
96 # (owner_uuid, name) uniqueness violation. In this specific case, and
97 # the client requested a unique name with ensure_unique_name==true,
98 # update the name field and try to save again. Loop as necessary to
99 # discover a unique name. It is necessary to handle name choosing at
100 # this level (as opposed to the client) to ensure that record creation
101 # never fails due to a race condition.
102 raise unless rn.original_exception.is_a? PG::UniqueViolation
104 # Unfortunately ActiveRecord doesn't abstract out any of the
105 # necessary information to figure out if this the error is actually
106 # the specific case where we want to apply the ensure_unique_name
107 # behavior, so the following code is specialized to Postgres.
108 err = rn.original_exception
109 detail = err.result.error_field(PG::Result::PG_DIAG_MESSAGE_DETAIL)
110 raise unless /^Key \(owner_uuid, name\)=\([a-z0-9]{5}-[a-z0-9]{5}-[a-z0-9]{15}, .*?\) already exists\./.match detail
112 # OK, this exception really is just a unique name constraint
113 # violation, and we've been asked to ensure_unique_name.
116 @object.name = "#{name_stem} (#{counter})"
123 attrs_to_update = resource_attrs.reject { |k,v|
124 [:kind, :etag, :href].index k
126 @object.update_attributes! attrs_to_update
135 def catch_redirect_hint
137 if params.has_key?('redirect_to') then
138 session[:redirect_to] = params[:redirect_to]
143 def render_404_if_no_object
144 render_not_found "Object not found" if !@object
148 logger.error e.inspect
149 if e.respond_to? :backtrace and e.backtrace
150 logger.error e.backtrace.collect { |x| x + "\n" }.join('')
152 if (@object.respond_to? :errors and
153 @object.errors.andand.full_messages.andand.any?)
154 errors = @object.errors.full_messages
155 logger.error errors.inspect
159 status = e.respond_to?(:http_status) ? e.http_status : 422
160 send_error(*errors, status: status)
163 def render_not_found(e=ActionController::RoutingError.new("Path not found"))
164 logger.error e.inspect
165 send_error("Path not found", status: 404)
170 def send_error(*args)
171 if args.last.is_a? Hash
176 err[:errors] ||= args
177 err[:error_token] = [Time.now.utc.to_i, "%08x" % rand(16 ** 8)].join("+")
178 status = err.delete(:status) || 422
179 logger.error "Error #{err[:error_token]}: #{status}"
180 render json: err, status: status
183 def find_objects_for_index
184 @objects ||= model_class.readable_by(*@read_users)
185 apply_where_limit_order_params
188 def apply_filters model_class=nil
189 model_class ||= self.model_class
190 ft = record_filters @filters, model_class
191 if ft[:cond_out].any?
192 @objects = @objects.where('(' + ft[:cond_out].join(') AND (') + ')',
197 def apply_where_limit_order_params *args
200 ar_table_name = @objects.table_name
201 if @where.is_a? Hash and @where.any?
203 @where.each do |attr,value|
204 if attr.to_s == 'any'
205 if value.is_a?(Array) and
206 value.length == 2 and
207 value[0] == 'contains' then
209 model_class.searchable_columns('ilike').each do |column|
210 # Including owner_uuid in an "any column" search will
211 # probably just return a lot of false positives.
212 next if column == 'owner_uuid'
213 ilikes << "#{ar_table_name}.#{column} ilike ?"
214 conditions << "%#{value[1]}%"
217 conditions[0] << ' and (' + ilikes.join(' or ') + ')'
220 elsif attr.to_s.match(/^[a-z][_a-z0-9]+$/) and
221 model_class.columns.collect(&:name).index(attr.to_s)
223 conditions[0] << " and #{ar_table_name}.#{attr} is ?"
225 elsif value.is_a? Array
226 if value[0] == 'contains' and value.length == 2
227 conditions[0] << " and #{ar_table_name}.#{attr} like ?"
228 conditions << "%#{value[1]}%"
230 conditions[0] << " and #{ar_table_name}.#{attr} in (?)"
233 elsif value.is_a? String or value.is_a? Fixnum or value == true or value == false
234 conditions[0] << " and #{ar_table_name}.#{attr}=?"
236 elsif value.is_a? Hash
237 # Not quite the same thing as "equal?" but better than nothing?
240 conditions[0] << " and #{ar_table_name}.#{attr} ilike ?"
241 conditions << "%#{k}%#{v}%"
247 if conditions.length > 1
248 conditions[0].sub!(/^1=1 and /, '')
255 unless action_name.in? %w(create update destroy)
256 # Map attribute names in @select to real column names, resolve
257 # those to fully-qualified SQL column names, and pass the
258 # resulting string to the select method.
259 api_column_map = model_class.attributes_required_columns
260 columns_list = @select.
261 flat_map { |attr| api_column_map[attr] }.
263 map { |s| "#{table_name}.#{ActiveRecord::Base.connection.quote_column_name s}" }
264 @objects = @objects.select(columns_list.join(", "))
267 # This information helps clients understand what they're seeing
268 # (Workbench always expects it), but they can't select it explicitly
269 # because it's not an SQL column. Always add it.
270 # (This is harmless, given that clients can deduce what they're
271 # looking at by the returned UUID anyway.)
274 @objects = @objects.order(@orders.join ", ") if @orders.any?
275 @objects = @objects.limit(@limit)
276 @objects = @objects.offset(@offset)
277 @objects = @objects.uniq(@distinct) if not @distinct.nil?
281 return @attrs if @attrs
282 @attrs = params[resource_name]
283 if @attrs.is_a? String
284 @attrs = Oj.load @attrs, symbol_keys: true
286 unless @attrs.is_a? Hash
287 message = "No #{resource_name}"
288 if resource_name.index('_')
289 message << " (or #{resource_name.camelcase(:lower)})"
291 message << " hash provided with request"
292 raise ArgumentError.new(message)
294 %w(created_at modified_by_client_uuid modified_by_user_uuid modified_at).each do |x|
295 @attrs.delete x.to_sym
297 @attrs = @attrs.symbolize_keys if @attrs.is_a? HashWithIndifferentAccess
304 if current_api_client_authorization
305 @read_auths << current_api_client_authorization
307 # Load reader tokens if this is a read request.
308 # If there are too many reader tokens, assume the request is malicious
310 if request.get? and params[:reader_tokens] and
311 params[:reader_tokens].size < 100
312 @read_auths += ApiClientAuthorization
314 .where('api_token IN (?) AND
315 (expires_at IS NULL OR expires_at > CURRENT_TIMESTAMP)',
316 params[:reader_tokens])
319 @read_auths.select! { |auth| auth.scopes_allow_request? request }
320 @read_users = @read_auths.map { |auth| auth.user }.uniq
325 respond_to do |format|
326 format.json { send_error("Not logged in", status: 401) }
327 format.html { redirect_to '/auth/joshid' }
334 unless current_user and current_user.is_admin
335 send_error("Forbidden", status: 403)
339 def require_auth_scope
340 if @read_auths.empty?
341 if require_login != false
342 send_error("Forbidden", status: 403)
348 def respond_with_json_by_default
349 html_index = request.accepts.index(Mime::HTML)
350 if html_index.nil? or request.accepts[0...html_index].include?(Mime::JSON)
351 request.format = :json
356 controller_name.classify.constantize
359 def resource_name # params[] key used by client
360 controller_name.singularize
367 def find_object_by_uuid
368 if params[:id] and params[:id].match /\D/
369 params[:uuid] = params.delete :id
371 @where = { uuid: params[:uuid] }
377 find_objects_for_index
378 @object = @objects.first
381 def reload_object_before_update
382 # This is necessary to prevent an ActiveRecord::ReadOnlyRecord
383 # error when updating an object which was retrieved using a join.
384 if @object.andand.readonly?
385 @object = model_class.find_by_uuid(@objects.first.uuid)
389 def load_json_value(hash, key, must_be_class=nil)
390 if hash[key].is_a? String
391 hash[key] = Oj.load(hash[key], symbol_keys: false)
392 if must_be_class and !hash[key].is_a? must_be_class
393 raise TypeError.new("parameter #{key.to_s} must be a #{must_be_class.to_s}")
398 def self.accept_attribute_as_json(attr, must_be_class=nil)
399 before_filter lambda { accept_attribute_as_json attr, must_be_class }
401 accept_attribute_as_json :properties, Hash
402 accept_attribute_as_json :info, Hash
403 def accept_attribute_as_json(attr, must_be_class)
404 if params[resource_name] and resource_attrs.is_a? Hash
405 if resource_attrs[attr].is_a? Hash
406 # Convert symbol keys to strings (in hashes provided by
408 resource_attrs[attr] = resource_attrs[attr].
409 with_indifferent_access.to_hash
411 load_json_value(resource_attrs, attr, must_be_class)
416 def self.accept_param_as_json(key, must_be_class=nil)
417 prepend_before_filter lambda { load_json_value(params, key, must_be_class) }
419 accept_param_as_json :reader_tokens, Array
423 :kind => "arvados##{(@response_resource_name || resource_name).camelize(:lower)}List",
428 :items => @objects.as_api_response(nil, {select: @select})
430 if @objects.respond_to? :except
431 @object_list[:items_available] = @objects.
432 except(:limit).except(:offset).
433 count(:id, distinct: true)
435 render json: @object_list
439 # Caveat: this is highly dependent on the proxy setup. YMMV.
440 if request.headers.has_key?('HTTP_X_REAL_IP') then
441 # We're behind a reverse proxy
442 @remote_ip = request.headers['HTTP_X_REAL_IP']
444 # Hopefully, we are not!
445 @remote_ip = request.env['REMOTE_ADDR']
449 def self._index_requires_parameters
451 filters: { type: 'array', required: false },
452 where: { type: 'object', required: false },
453 order: { type: 'array', required: false },
454 select: { type: 'array', required: false },
455 distinct: { type: 'boolean', required: false },
456 limit: { type: 'integer', required: false, default: DEFAULT_LIMIT },
457 offset: { type: 'integer', required: false, default: 0 },
461 def client_accepts_plain_text_stream
462 (request.headers['Accept'].split(' ') &
463 ['text/plain', '*/*']).count > 0
468 response = opts.first[:json]
469 if response.is_a?(Hash) &&
471 Thread.current[:request_starttime]
472 response[:_profile] = {
473 request_time: Time.now - Thread.current[:request_starttime]
481 return Rails.configuration.arvados_theme