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# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class ReorganizeDeploymentsIndexes < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
add_index_if_not_exists :deployments, [:environment_id, :iid, :project_id]
remove_index_if_exists :deployments, [:project_id, :environment_id, :iid]
end
def down
add_index_if_not_exists :deployments, [:project_id, :environment_id, :iid]
remove_index_if_exists :deployments, [:environment_id, :iid, :project_id]
end
def add_index_if_not_exists(table, columns)
add_concurrent_index(table, columns) unless index_exists?(table, columns)
end
def remove_index_if_exists(table, columns)
remove_concurrent_index(table, columns) if index_exists?(table, columns)
end
end
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