chia7712 commented on code in PR #17609: URL: https://github.com/apache/kafka/pull/17609#discussion_r1821097842
########## core/src/main/java/kafka/server/ReplicationQuotaManager.java: ########## @@ -0,0 +1,154 @@ +/* + * 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 kafka.server; + +import org.apache.kafka.common.MetricName; +import org.apache.kafka.common.TopicPartition; +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.SimpleRate; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.server.config.ReplicationQuotaManagerConfig; +import org.apache.kafka.server.quota.QuotaType; +import org.apache.kafka.server.quota.SensorAccess; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.List; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.locks.ReentrantReadWriteLock; + +public class ReplicationQuotaManager implements ReplicaQuota { + public static final List<Integer> ALL_REPLICAS = List.of(-1); + private static final Logger LOGGER = LoggerFactory.getLogger(ReplicationQuotaManager.class); + private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); + private final ConcurrentHashMap<String, List<Integer>> throttledPartitions = new ConcurrentHashMap<>(); + private final ReplicationQuotaManagerConfig config; + private final Metrics metrics; + private final QuotaType replicationType; + private final Time time; + private final SensorAccess sensorAccess; + private final MetricName rateMetricName; + private Quota quota; + + public ReplicationQuotaManager(ReplicationQuotaManagerConfig config, Metrics metrics, QuotaType replicationType, Time time) { + this.config = config; + this.metrics = metrics; + this.replicationType = replicationType; + this.time = time; + this.sensorAccess = new SensorAccess(lock, metrics); + this.rateMetricName = metrics.metricName("byte-rate", replicationType.toString(), "Tracking byte-rate for " + replicationType); + } + + /** + * Update the quota + */ + public void updateQuota(Quota quota) { + lock.writeLock().lock(); + try { + this.quota = quota; + KafkaMetric metric = metrics.metrics().get(rateMetricName); + if (metric != null) { + metric.config(getQuotaMetricConfig(quota)); + } + } finally { + lock.writeLock().unlock(); + } + } + + /** + * Check if the quota is currently exceeded + */ + @Override + public boolean isQuotaExceeded() { + try { Review Comment: ```java try { sensor().checkQuotas(); return false; } catch (QuotaViolationException qve) { LOGGER.trace("{}: Quota violated for sensor ({}), metric: ({}), metric-value: ({}), bound: ({})", replicationType, sensor().name(), qve.metric().metricName(), qve.value(), qve.bound()); return true; } ``` ########## core/src/main/java/kafka/server/ClientRequestQuotaManager.java: ########## @@ -0,0 +1,110 @@ +/* + * 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 kafka.server; + +import kafka.network.RequestChannel; + +import org.apache.kafka.common.MetricName; +import org.apache.kafka.common.metrics.Metrics; +import org.apache.kafka.common.metrics.QuotaViolationException; +import org.apache.kafka.common.metrics.Sensor; +import org.apache.kafka.common.metrics.stats.Rate; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.server.config.ClientQuotaManagerConfig; +import org.apache.kafka.server.quota.ClientQuotaCallback; +import org.apache.kafka.server.quota.QuotaType; +import org.apache.kafka.server.quota.QuotaUtils; + +import java.util.Optional; +import java.util.concurrent.TimeUnit; + +import scala.jdk.javaapi.CollectionConverters; +import scala.jdk.javaapi.OptionConverters; +import scala.runtime.BoxedUnit; + +@SuppressWarnings("this-escape") +public class ClientRequestQuotaManager extends ClientQuotaManager { + // Since exemptSensor is for all clients and has a constant name, we do not expire exemptSensor and only + // create once. + static final double NANOS_TO_PERCENTAGE_PER_SECOND = 100.0 / TimeUnit.SECONDS.toNanos(1); + private static final long DEFAULT_INACTIVE_EXEMPT_SENSOR_EXPIRATION_TIME_SECONDS = Long.MAX_VALUE; + private static final String EXEMPT_SENSOR_NAME = "exempt-" + QuotaType.REQUEST; + + private final long maxThrottleTimeMs; + private final Metrics metrics; + private final MetricName exemptMetricName; + // Visible for testing + private final Sensor exemptSensor; + + public ClientRequestQuotaManager(ClientQuotaManagerConfig config, Metrics metrics, Time time, String threadNamePrefix, Optional<ClientQuotaCallback> quotaCallback) { + super(config, metrics, QuotaType.REQUEST, time, threadNamePrefix, OptionConverters.toScala(quotaCallback)); + this.maxThrottleTimeMs = TimeUnit.SECONDS.toMillis(config.quotaWindowSizeSeconds); + this.metrics = metrics; + this.exemptMetricName = metrics.metricName("exempt-request-time", QuotaType.REQUEST.toString(), "Tracking exempt-request-time utilization percentage"); + exemptSensor = getOrCreateSensor(EXEMPT_SENSOR_NAME, DEFAULT_INACTIVE_EXEMPT_SENSOR_EXPIRATION_TIME_SECONDS, sensor -> sensor.add(exemptMetricName, new Rate())); + } + + public Sensor exemptSensor() { + return exemptSensor; + } + + private void recordExempt(double value) { + exemptSensor.record(value); + } + + /** + * Records that a user/clientId changed request processing time being throttled. If quota has been violated, return + * throttle time in milliseconds. Throttle time calculation may be overridden by sub-classes. + * @param request client request + * @return Number of milliseconds to throttle in case of quota violation. Zero otherwise + */ + public int maybeRecordAndGetThrottleTimeMs(RequestChannel.Request request, long timeMs) { + if (quotasEnabled()) { + request.setRecordNetworkThreadTimeCallback(timeNanos -> { Review Comment: Could you please change the input type of `setRecordNetworkThreadTimeCallback` from `Long => Unit` to `java.util.function.Consumer`? Using the scala type in java is a bit weird ########## core/src/main/java/kafka/server/QuotaFactory.java: ########## @@ -0,0 +1,161 @@ +/* + * 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 kafka.server; + +import org.apache.kafka.common.TopicPartition; +import org.apache.kafka.common.metrics.Metrics; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.server.config.ClientQuotaManagerConfig; +import org.apache.kafka.server.config.QuotaConfig; +import org.apache.kafka.server.config.ReplicationQuotaManagerConfig; +import org.apache.kafka.server.quota.ClientQuotaCallback; +import org.apache.kafka.server.quota.QuotaType; + +import java.util.Optional; + +import scala.Option; + +public class QuotaFactory { + + public static final UnboundedQuota UNBOUNDED_QUOTA = new UnboundedQuota(); + + public static class UnboundedQuota implements ReplicaQuota { Review Comment: ```java public static final ReplicaQuota UNBOUNDED_QUOTA = new ReplicaQuota() { @Override public boolean isThrottled(TopicPartition topicPartition) { return false; } @Override public boolean isQuotaExceeded() { return false; } @Override public void record(long value) { // No-op } }; ``` WDYT? -- This is an automated message from the Apache Git Service. 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