Add background migrations to arhive legacy traces

2 files changed, 45 insertions, 1 deletions

diff --git a/db/post_migrate/20180529152628_archive_legacy_traces.rb b/db/post_migrate/20180529152628_archive_legacy_traces.rb
new file mode 100644
index 00000000000..78ec1ab1a94
--- /dev/null
+++ b/db/post_migrate/20180529152628_archive_legacy_traces.rb
@@ -0,0 +1,44 @@
+class ArchiveLegacyTraces < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  BATCH_SIZE = 10_000
+  BACKGROUND_MIGRATION_CLASS = 'ArchiveLegacyTraces'
+
+  disable_ddl_transaction!
+
+  class Build < ActiveRecord::Base
+    include EachBatch
+    self.table_name = 'ci_builds'
+    self.inheritance_column = :_type_disabled # Disable STI
+
+    scope :finished, -> { where(status: [:success, :failed, :canceled]) }
+
+    scope :without_new_traces, ->() do
+      where('NOT EXISTS (?)',
+        ::ArchiveLegacyTraces::JobArtifact.select(1).trace.where('ci_builds.id = ci_job_artifacts.job_id'))
+    end
+  end
+
+  class JobArtifact < ActiveRecord::Base
+    self.table_name = 'ci_job_artifacts'
+
+    enum file_type: {
+      archive: 1,
+      metadata: 2,
+      trace: 3
+    }
+  end
+
+  def up
+    queue_background_migration_jobs_by_range_at_intervals(
+      ::ArchiveLegacyTraces::Build.finished.without_new_traces,
+      BACKGROUND_MIGRATION_CLASS,
+      5.minutes,
+      batch_size: BATCH_SIZE)
+  end
+
+  def down
+    # noop
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 97247387bc7..a8f8e14a3fc 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180529093006) do
+ActiveRecord::Schema.define(version: 20180529152628) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"