9854: Added ArvadosModel::UnresolvableContainerError exception to return a 422 http...

[arvados.git] / services / api / app / models / arvados_model.rb

diff --git a/services/api/app/models/arvados_model.rb b/services/api/app/models/arvados_model.rb
index d5b2f871cc89a138a894753deaf9b026b0bc8443..6b6a709d6e2ddea872c4d5b788c9c870dc2bc9b9 100644 (file)
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -23,6 +23,7 @@ class ArvadosModel < ActiveRecord::Base
   after_destroy :log_destroy
   after_find :convert_serialized_symbols_to_strings
   before_validation :normalize_collection_uuids
+  before_validation :set_default_owner
   validate :ensure_serialized_attribute_type
   validate :ensure_valid_uuids
 
@@ -49,6 +50,12 @@ class ArvadosModel < ActiveRecord::Base
     end
   end
 
+  class UnresolvableContainerError < StandardError
+    def http_status
+      422
+    end
+  end
+
   def self.kind_class(kind)
     kind.match(/^arvados\#(.+)$/)[1].classify.safe_constantize rescue nil
   end
@@ -103,10 +110,27 @@ class ArvadosModel < ActiveRecord::Base
     api_column_map
   end
 
+  def self.ignored_select_attributes
+    ["href", "kind", "etag"]
+  end
+
   def self.columns_for_attributes(select_attributes)
+    if select_attributes.empty?
+      raise ArgumentError.new("Attribute selection list cannot be empty")
+    end
+    api_column_map = attributes_required_columns
+    invalid_attrs = []
+    select_attributes.each do |s|
+      next if ignored_select_attributes.include? s
+      if not s.is_a? String or not api_column_map.include? s
+        invalid_attrs << s
+      end
+    end
+    if not invalid_attrs.empty?
+      raise ArgumentError.new("Invalid attribute(s): #{invalid_attrs.inspect}")
+    end
     # Given an array of attribute names to select, return an array of column
     # names that must be fetched from the database to satisfy the request.
-    api_column_map = attributes_required_columns
     select_attributes.flat_map { |attr| api_column_map[attr] }.uniq
   end
 
@@ -114,6 +138,10 @@ class ArvadosModel < ActiveRecord::Base
     ["#{table_name}.modified_at desc", "#{table_name}.uuid"]
   end
 
+  def self.unique_columns
+    ["id", "uuid"]
+  end
+
   # If current user can manage the object, return an array of uuids of
   # users and groups that have permission to write the object. The
   # first two elements are always [self.owner_uuid, current user's
@@ -276,12 +304,14 @@ class ArvadosModel < ActiveRecord::Base
     true
   end
 
-  def ensure_owner_uuid_is_permitted
-    raise PermissionDeniedError if !current_user
-
-    if new_record? and respond_to? :owner_uuid=
+  def set_default_owner
+    if new_record? and current_user and respond_to? :owner_uuid=
       self.owner_uuid ||= current_user.uuid
     end
+  end
+
+  def ensure_owner_uuid_is_permitted
+    raise PermissionDeniedError if !current_user
 
     if self.owner_uuid.nil?
       errors.add :owner_uuid, "cannot be nil"
@@ -384,15 +414,16 @@ class ArvadosModel < ActiveRecord::Base
       x.each do |k,v|
         return true if has_symbols?(k) or has_symbols?(v)
       end
-      false
     elsif x.is_a? Array
       x.each do |k|
         return true if has_symbols?(k)
       end
-      false
-    else
-      (x.class == Symbol)
+    elsif x.is_a? Symbol
+      return true
+    elsif x.is_a? String
+      return true if x.start_with?(':') && !x.start_with?('::')
     end
+    false
   end
 
   def self.recursive_stringify x
@@ -406,6 +437,8 @@ class ArvadosModel < ActiveRecord::Base
       end
     elsif x.is_a? Symbol
       x.to_s
+    elsif x.is_a? String and x.start_with?(':') and !x.start_with?('::')
+      x[1..-1]
     else
       x
     end