37 lines
1.1 KiB
Ruby
37 lines
1.1 KiB
Ruby
class CleanUpFromMergeRequestDiffsAndCommits < ActiveRecord::Migration[4.2]
|
|
include Gitlab::Database::MigrationHelpers
|
|
|
|
DOWNTIME = false
|
|
|
|
class MergeRequestDiff < ActiveRecord::Base
|
|
self.table_name = 'merge_request_diffs'
|
|
|
|
include ::EachBatch
|
|
end
|
|
|
|
disable_ddl_transaction!
|
|
|
|
def up
|
|
Gitlab::BackgroundMigration.steal('DeserializeMergeRequestDiffsAndCommits')
|
|
|
|
# The literal '--- []\n' value is created by the import process and treated
|
|
# as null by the application, so we can ignore those - even if we were
|
|
# migrating, it wouldn't create any rows.
|
|
literal_prefix = Gitlab::Database.postgresql? ? 'E' : ''
|
|
non_empty = "
|
|
(st_commits IS NOT NULL AND st_commits != #{literal_prefix}'--- []\n')
|
|
OR
|
|
(st_diffs IS NOT NULL AND st_diffs != #{literal_prefix}'--- []\n')
|
|
".squish
|
|
|
|
MergeRequestDiff.where(non_empty).each_batch(of: 500) do |relation, index|
|
|
range = relation.pluck('MIN(id)', 'MAX(id)').first
|
|
|
|
Gitlab::BackgroundMigration::DeserializeMergeRequestDiffsAndCommits.new.perform(*range)
|
|
end
|
|
end
|
|
|
|
def down
|
|
end
|
|
end
|