refs #4926 Merge branch '4926-getting-started'

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

diff --git a/services/api/app/models/log.rb b/services/api/app/models/log.rb
index 17d6ec42db6ce331ed71f99cd5474eb3148ecc4f..39f789e69f9ebf89cf9ca00887f047a8f74b9578 100644 (file)
--- a/services/api/app/models/log.rb
+++ b/services/api/app/models/log.rb
@@ -1,38 +1,48 @@
 class Log < ArvadosModel
-  include AssignUuid
+  include HasUuid
   include KindAndEtag
   include CommonApiTemplate
   serialize :properties, Hash
   before_validation :set_default_event_at
-  before_save { self.owner_uuid = self.system_user_uuid }
-  attr_accessor :object
+  attr_accessor :object, :object_kind
+  after_save :send_notify
 
   api_accessible :user, extend: :common do |t|
-    t.add :object_kind
+    t.add :id
     t.add :object_uuid
-    t.add :object, :if => :object
+    t.add :object_owner_uuid
+    t.add :object_kind
     t.add :event_at
     t.add :event_type
     t.add :summary
     t.add :properties
   end
 
-  def self.start_from(thing, event_type)
-    self.new do |log|
-      log.event_type = event_type
-      log.properties = {
-        'old_etag' => nil,
-        'old_attributes' => nil,
-      }
-      log.seed_basics_from thing
+  def object_kind
+    if k = ArvadosModel::resource_class_for_uuid(object_uuid)
+      k.kind
+    end
+  end
+
+  def fill_object(thing)
+    self.object_uuid ||= thing.uuid
+    if respond_to? :object_owner_uuid=
+      # Skip this if the object_owner_uuid migration hasn't happened
+      # yet, i.e., we're in the process of migrating an old database.
+      self.object_owner_uuid = thing.owner_uuid
     end
+    self.summary ||= "#{self.event_type} of #{thing.uuid}"
+    self
+  end
+
+  def fill_properties(age, etag_prop, attrs_prop)
+    self.properties.merge!({"#{age}_etag" => etag_prop,
+                             "#{age}_attributes" => attrs_prop})
   end
 
   def update_to(thing)
-    self.seed_basics_from thing
-    self.properties["new_etag"] = thing.andand.etag
-    self.properties["new_attributes"] = thing.andand.attributes
-    case self.event_type
+    fill_properties('new', thing.andand.etag, thing.andand.logged_attributes)
+    case event_type
     when "create"
       self.event_at = thing.created_at
     when "update"
@@ -40,14 +50,7 @@ class Log < ArvadosModel
     when "destroy"
       self.event_at = Time.now
     end
-  end
-
-  def seed_basics_from(thing)
-    if not thing.nil?
-      self.object_kind ||= thing.kind
-      self.object_uuid ||= thing.uuid
-      self.summary ||= "#{self.event_type} of #{thing.uuid}"
-    end
+    self
   end
 
   protected
@@ -65,4 +68,21 @@ class Log < ArvadosModel
   def set_default_event_at
     self.event_at ||= Time.now
   end
+
+  def log_start_state
+    # don't log start state on logs
+  end
+
+  def log_change(event_type)
+    # Don't log changes to logs.
+  end
+
+  def ensure_valid_uuids
+    # logs can have references to deleted objects
+  end
+
+  def send_notify
+    connection.execute "NOTIFY logs, '#{self.id}'"
+  end
+
 end