Merge branch 'master' into 2449-keep-write-blocks

[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 493cf828d165abaf6f6163daae6d714d0e8b8c8f..dbb807c0b6b4005193babfef0a93481f1f75ef56 100644 (file)
--- a/services/api/app/models/arvados_model.rb
+++ b/services/api/app/models/arvados_model.rb
@@ -8,11 +8,16 @@ class ArvadosModel < ActiveRecord::Base
   attr_protected :modified_by_user_uuid
   attr_protected :modified_by_client_uuid
   attr_protected :modified_at
+  after_initialize :log_start_state
   before_create :ensure_permission_to_create
   before_update :ensure_permission_to_update
   before_destroy :ensure_permission_to_destroy
 
-  before_validation :maybe_update_modified_by_fields
+  before_create :update_modified_by_fields
+  before_update :maybe_update_modified_by_fields
+  after_create :log_create
+  after_update :log_update
+  after_destroy :log_destroy
   validate :ensure_serialized_attribute_type
   validate :normalize_collection_uuids
   validate :ensure_valid_uuids
@@ -84,6 +89,10 @@ class ArvadosModel < ActiveRecord::Base
             user.uuid)
   end
 
+  def logged_attributes
+    attributes
+  end
+
   protected
 
   def ensure_permission_to_create
@@ -213,22 +222,35 @@ class ArvadosModel < ActiveRecord::Base
     specials = [system_user_uuid, 'd41d8cd98f00b204e9800998ecf8427e+0']
 
     foreign_key_attributes.each do |attr|
-      begin
-        if new_record? or send (attr + "_changed?")
-          attr_value = send attr
-          r = ArvadosModel::resource_class_for_uuid attr_value if attr_value
-          r = r.readable_by(current_user) if r and not skip_uuid_read_permission_check.include? attr
-          if r and r.where(uuid: attr_value).count == 0 and not specials.include? attr_value
-            errors.add(attr, "'#{attr_value}' not found")
-          end
+      if new_record? or send (attr + "_changed?")
+        attr_value = send attr
+        r = ArvadosModel::resource_class_for_uuid attr_value if attr_value
+        r = r.readable_by(current_user) if r and not skip_uuid_read_permission_check.include? attr
+        if r and r.where(uuid: attr_value).count == 0 and not specials.include? attr_value
+          errors.add(attr, "'#{attr_value}' not found")
         end
-      rescue Exception => e
-        bt = e.backtrace.join("\n")
-        errors.add(attr, "'#{attr_value}' error '#{e}'\n#{bt}\n")
       end
     end
   end
 
+  class Email
+    def self.kind
+      "email"
+    end
+
+    def kind
+      self.class.kind
+    end
+
+    def self.readable_by (u)
+      self
+    end
+
+    def self.where (u)
+      [{:uuid => u[:uuid]}]
+    end
+  end
+
   def self.resource_class_for_uuid(uuid)
     if uuid.is_a? ArvadosModel
       return uuid.class
@@ -245,7 +267,44 @@ class ArvadosModel < ActiveRecord::Base
     uuid.match @@UUID_REGEX do |re|
       return uuid_prefixes[re[1]] if uuid_prefixes[re[1]]
     end
+
+    if uuid.match /.+@.+/
+      return Email
+    end
+
     nil
   end
 
+  def log_start_state
+    @old_etag = etag
+    @old_attributes = logged_attributes
+  end
+
+  def log_change(event_type)
+    log = Log.new(event_type: event_type).fill_object(self)
+    yield log
+    log.save!
+    log_start_state
+  end
+
+  def log_create
+    log_change('create') do |log|
+      log.fill_properties('old', nil, nil)
+      log.update_to self
+    end
+  end
+
+  def log_update
+    log_change('update') do |log|
+      log.fill_properties('old', @old_etag, @old_attributes)
+      log.update_to self
+    end
+  end
+
+  def log_destroy
+    log_change('destroy') do |log|
+      log.fill_properties('old', @old_etag, @old_attributes)
+      log.update_to nil
+    end
+  end
 end