mybatis plugin for slowing down specific queries

SlowQuerySimulatorPlugin.java

    /**
     * For dev purposes only. Intercepts queries and inserts delay to help simulate slow queries.
     */
    @Intercepts(
            @Signature(
                    type = StatementHandler.class,
                    method = "query",
                    args = {Statement.class, ResultHandler.class}
            )
    )
    @Slf4j
    @RequiredArgsConstructor
    public class SlowQuerySimulatorPlugin implements Interceptor {

        private final Random random = new Random();
        
        /**
         * If this value is negative, the actual delay will be randomized to a most its absolute value.
         */
        private final int delayMs;

        @Override
        public Object intercept(Invocation invocation) throws Throwable {
            int delay = delayMs > 0 ? delayMs : random.nextInt(Math.abs(delayMs));
            StatementHandler handler = (StatementHandler) invocation.getTarget();
            if (handler.getBoundSql().getSql().contains("xxx")) { // unique text in query we want to slow down
                log.info("Slowing query by {}ms", delay);
                log.debug("Query: {}", handler.getBoundSql().getSql());
                Thread.sleep(delay);
            }
            return invocation.proceed();
        }

        @Override
        public Object plugin(Object target) {
            return Plugin.wrap(target, this);
        }

        @Override
        public void setProperties(Properties properties) {
            // intentionally empty
        }
    }