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# frozen_string_literal: true
class AddHasExternalIssueTrackerTrigger < ActiveRecord::Migration[6.0]
include Gitlab::Database::SchemaHelpers
DOWNTIME = false
FUNCTION_NAME = 'set_has_external_issue_tracker'
TRIGGER_ON_INSERT_NAME = 'trigger_has_external_issue_tracker_on_insert'
TRIGGER_ON_UPDATE_NAME = 'trigger_has_external_issue_tracker_on_update'
TRIGGER_ON_DELETE_NAME = 'trigger_has_external_issue_tracker_on_delete'
def up
create_trigger_function(FUNCTION_NAME, replace: true) do
<<~SQL
UPDATE projects SET has_external_issue_tracker = (
EXISTS
(
SELECT 1
FROM services
WHERE project_id = COALESCE(NEW.project_id, OLD.project_id)
AND active = TRUE
AND category = 'issue_tracker'
)
)
WHERE projects.id = COALESCE(NEW.project_id, OLD.project_id);
RETURN NULL;
SQL
end
execute(<<~SQL)
CREATE TRIGGER #{TRIGGER_ON_INSERT_NAME}
AFTER INSERT ON services
FOR EACH ROW
WHEN (NEW.category = 'issue_tracker' AND NEW.active = TRUE AND NEW.project_id IS NOT NULL)
EXECUTE FUNCTION #{FUNCTION_NAME}();
SQL
execute(<<~SQL)
CREATE TRIGGER #{TRIGGER_ON_UPDATE_NAME}
AFTER UPDATE ON services
FOR EACH ROW
WHEN (NEW.category = 'issue_tracker' AND OLD.active != NEW.active AND NEW.project_id IS NOT NULL)
EXECUTE FUNCTION #{FUNCTION_NAME}();
SQL
execute(<<~SQL)
CREATE TRIGGER #{TRIGGER_ON_DELETE_NAME}
AFTER DELETE ON services
FOR EACH ROW
WHEN (OLD.category = 'issue_tracker' AND OLD.active = TRUE AND OLD.project_id IS NOT NULL)
EXECUTE FUNCTION #{FUNCTION_NAME}();
SQL
end
def down
drop_trigger(:services, TRIGGER_ON_INSERT_NAME)
drop_trigger(:services, TRIGGER_ON_UPDATE_NAME)
drop_trigger(:services, TRIGGER_ON_DELETE_NAME)
drop_function(FUNCTION_NAME)
end
end
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