Add wiki size to project statistics

3 files changed, 43 insertions, 1 deletions

diff --git a/db/migrate/20190527194830_add_wiki_size_to_statistics.rb b/db/migrate/20190527194830_add_wiki_size_to_statistics.rb
new file mode 100644
index 00000000000..d4f16cdec18
--- /dev/null
+++ b/db/migrate/20190527194830_add_wiki_size_to_statistics.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddWikiSizeToStatistics < ActiveRecord::Migration[5.0]
+  DOWNTIME = false
+
+  def change
+    add_column :project_statistics, :wiki_size, :bigint
+  end
+end
diff --git a/db/post_migrate/20190527194900_schedule_calculate_wiki_sizes.rb b/db/post_migrate/20190527194900_schedule_calculate_wiki_sizes.rb
new file mode 100644
index 00000000000..04cf5906b61
--- /dev/null
+++ b/db/post_migrate/20190527194900_schedule_calculate_wiki_sizes.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+class ScheduleCalculateWikiSizes < ActiveRecord::Migration[5.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  MIGRATION = 'CalculateWikiSizes'
+  BATCH_SIZE = 100000
+  BATCH_TIME = 5.minutes
+
+  class ProjectStatistics < ActiveRecord::Base
+    self.table_name = 'project_statistics'
+
+    scope :without_wiki_size, -> { where(wiki_size: nil) }
+
+    include ::EachBatch
+  end
+
+  disable_ddl_transaction!
+
+  def up
+    queue_background_migration_jobs_by_range_at_intervals(
+      ::ScheduleCalculateWikiSizes::ProjectStatistics.without_wiki_size,
+      MIGRATION,
+      BATCH_TIME,
+      batch_size: BATCH_SIZE)
+  end
+
+  def down
+    # no-op
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index bb59af540fe..89140048ad3 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20190524062810) do
+ActiveRecord::Schema.define(version: 20190527194900) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -1745,6 +1745,7 @@ ActiveRecord::Schema.define(version: 20190524062810) do
     t.bigint "lfs_objects_size", default: 0, null: false
     t.bigint "build_artifacts_size", default: 0, null: false
     t.bigint "packages_size"
+    t.bigint "wiki_size"
     t.index ["namespace_id"], name: "index_project_statistics_on_namespace_id", using: :btree
     t.index ["project_id"], name: "index_project_statistics_on_project_id", unique: true, using: :btree
   end