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# frozen_string_literal: true
class CreateIncidentManagementOncallShifts < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
def up
unless table_exists?(:incident_management_oncall_shifts)
with_lock_retries do
create_table :incident_management_oncall_shifts do |t|
t.references :rotation, null: false, foreign_key: { to_table: :incident_management_oncall_rotations, on_delete: :cascade }
t.references :participant, null: false, foreign_key: { to_table: :incident_management_oncall_participants, on_delete: :cascade }
t.datetime_with_timezone :starts_at, null: false
t.datetime_with_timezone :ends_at, null: false
end
execute <<~SQL
ALTER TABLE incident_management_oncall_shifts
ADD CONSTRAINT inc_mgmnt_no_overlapping_oncall_shifts
EXCLUDE USING gist
( rotation_id WITH =,
tstzrange(starts_at, ends_at, '[)') WITH &&
)
SQL
end
end
end
def down
with_lock_retries do
drop_table :incident_management_oncall_shifts
end
end
end
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