debian-mirror-gitlab/db/migrate/20170608152748_create_push_event_payloads_tables.rb

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2017-09-10 17:25:29 +05:30
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
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class CreatePushEventPayloadsTables < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
# Set this constant to true if this migration requires downtime.
DOWNTIME = false
disable_ddl_transaction!
def up
create_table :push_event_payloads, id: false do |t|
t.bigint :commit_count, null: false
t.integer :event_id, null: false
t.integer :action, null: false, limit: 2
t.integer :ref_type, null: false, limit: 2
t.binary :commit_from
t.binary :commit_to
t.text :ref
t.string :commit_title, limit: 70
t.index :event_id, unique: true
end
# We're adding a foreign key to the _shadow_ table, and this is deliberate.
# By using the shadow table we don't have to recreate/revalidate this
# foreign key after swapping the "events_for_migration" and "events" tables.
#
# The "events_for_migration" table has a foreign key to "projects.id"
# ensuring that project removals also remove events from the shadow table
# (and thus also from this table).
add_concurrent_foreign_key(
:push_event_payloads,
:events_for_migration,
column: :event_id
)
end
def down
drop_table :push_event_payloads
end
end