[#775] Remove noisy journals on Attachments and Messages

db/migrate/20120131142400_remove_noisy_attachment_journals.rb

@@ -0,0 +1,30 @@
+#-- encoding: UTF-8
+#-- copyright
+# ChiliProject is a project management system.
+#
+# Copyright (C) 2010-2012 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+class RemoveNoisyAttachmentJournals < ActiveRecord::Migration
+  def self.up
+    AttachmentJournal.find_each(:batch_size => 100 ) do |j|
+      if j.changes.keys == ["downloads"]
+        j.destroy
+      elsif j.changes.keys.include? "downloads"
+        j.changes.delete("downloads")
+        j.save!
+      end
+    end
+  end
+
+  def self.down
+    # no-op as the downloads counter shouldn't be journaled in the first time
+  end
+end

db/migrate/20120131142401_remove_noisy_message_journals.rb

@@ -0,0 +1,32 @@
+#-- encoding: UTF-8
+#-- copyright
+# ChiliProject is a project management system.
+#
+# Copyright (C) 2010-2012 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+class RemoveNoisyMessageJournals < ActiveRecord::Migration
+  def self.up
+    noisy_keys = %w[last_reply_id replies_count]
+
+    MessageJournal.find_each(:batch_size => 100 ) do |j|
+      if (j.changes.keys | noisy_keys).sort == noisy_keys
+        j.destroy
+      elsif (j.changes.keys & noisy_keys).count > 0
+        noisy_keys.each{ |k| j.changes.delete(k) }
+        j.save!
+      end
+    end
+  end
+
+  def self.down
+    # no-op as the pointers shouldn't be journaled in the first time
+  end
+end