mimaison commented on code in PR #22403: URL: https://github.com/apache/kafka/pull/22403#discussion_r3392013232
########## server/src/test/java/org/apache/kafka/server/quota/ControllerMutationQuotaManagerTest.java: ########## @@ -0,0 +1,243 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.kafka.server.quota; + +import org.apache.kafka.common.MetricName; +import org.apache.kafka.common.errors.ThrottlingQuotaExceededException; +import org.apache.kafka.common.metrics.KafkaMetric; +import org.apache.kafka.common.metrics.MetricConfig; +import org.apache.kafka.common.metrics.Metrics; +import org.apache.kafka.common.metrics.Quota; +import org.apache.kafka.common.metrics.QuotaViolationException; +import org.apache.kafka.common.metrics.Sensor; +import org.apache.kafka.common.metrics.stats.TokenBucket; +import org.apache.kafka.common.utils.MockTime; +import org.apache.kafka.server.config.ClientQuotaManagerConfig; + +import org.junit.jupiter.api.Test; + +import java.util.Optional; +import java.util.concurrent.TimeUnit; +import java.util.function.Consumer; + +import static org.apache.kafka.server.quota.ControllerMutationQuotaManager.throttleTimeMs; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertInstanceOf; +import static org.junit.jupiter.api.Assertions.assertThrows; +import static org.junit.jupiter.api.Assertions.assertTrue; + +public class ControllerMutationQuotaManagerTest extends BaseClientQuotaManagerTest { + + private static final String USER = "ANONYMOUS"; + private static final String CLIENT_ID = "test-client"; + + private final ClientQuotaManagerConfig config = new ClientQuotaManagerConfig(10, 1); + + @Test + public void testStrictControllerMutationQuotaViolation() { + MockTime time = new MockTime(0, System.currentTimeMillis(), 0); + try (Metrics metrics = new Metrics(time)) { + Sensor sensor = metrics.sensor("sensor", new MetricConfig() + .quota(Quota.upperBound(10)) + .timeWindow(1, TimeUnit.SECONDS) + .samples(10)); + MetricName metricName = metrics.metricName("rate", "test-group"); + assertTrue(sensor.add(metricName, new TokenBucket())); + + StrictControllerMutationQuota quota = new StrictControllerMutationQuota(time, sensor); + assertFalse(quota.isExceeded()); + + // Recording a first value at T to bring the tokens to 10. Value is accepted + // because the quota is not exhausted yet. + quota.record(90); + assertFalse(quota.isExceeded()); + assertEquals(0, quota.throttleTime()); + + // Recording a second value at T to bring the tokens to -80. Value is accepted + quota.record(90); + assertFalse(quota.isExceeded()); + assertEquals(0, quota.throttleTime()); + + // Recording a third value at T is rejected immediately because there are no + // tokens available in the bucket. + assertThrows(ThrottlingQuotaExceededException.class, () -> quota.record(90)); + assertTrue(quota.isExceeded()); + assertEquals(8000, quota.throttleTime()); + + // Throttle time is adjusted with time + time.sleep(5000); + assertEquals(3000, quota.throttleTime()); + } + } + + @Test + public void testPermissiveControllerMutationQuotaViolation() { + MockTime time = new MockTime(0, System.currentTimeMillis(), 0); + try (Metrics metrics = new Metrics(time)) { + Sensor sensor = metrics.sensor("sensor", new MetricConfig() + .quota(Quota.upperBound(10)) + .timeWindow(1, TimeUnit.SECONDS) + .samples(10)); + MetricName metricName = metrics.metricName("rate", "test-group"); + assertTrue(sensor.add(metricName, new TokenBucket())); + + PermissiveControllerMutationQuota quota = new PermissiveControllerMutationQuota(time, sensor); + assertFalse(quota.isExceeded()); + + // Recording a first value at T to bring the tokens 10. Value is accepted + // because the quota is not exhausted yet. + quota.record(90); + assertFalse(quota.isExceeded()); + assertEquals(0, quota.throttleTime()); + + // Recording a second value at T to bring the tokens to -80. Value is accepted + quota.record(90); + assertFalse(quota.isExceeded()); + assertEquals(8000, quota.throttleTime()); + + // Recording a third value at T to bring the tokens to -170. Value is accepted + // even though the quota is exhausted. + quota.record(90); + assertFalse(quota.isExceeded()); // quota is never exceeded + assertEquals(17000, quota.throttleTime()); + + // Throttle time is adjusted with time + time.sleep(5000); + assertEquals(12000, quota.throttleTime()); + } + } + + private void withQuotaManager(Consumer<ControllerMutationQuotaManager> f) { Review Comment: You're right, it would work on that file too, updated -- This is an automated message from the Apache Git Service. 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