philipnee commented on code in PR #14364: URL: https://github.com/apache/kafka/pull/14364#discussion_r1330940223
########## clients/src/main/java/org/apache/kafka/clients/consumer/internals/HeartbeatRequestManager.java: ########## @@ -0,0 +1,255 @@ +/* + * 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.clients.consumer.internals; + +import org.apache.kafka.clients.CommonClientConfigs; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.common.KafkaException; +import org.apache.kafka.common.errors.GroupAuthorizationException; +import org.apache.kafka.common.message.ConsumerGroupHeartbeatRequestData; +import org.apache.kafka.common.protocol.Errors; +import org.apache.kafka.common.requests.ConsumerGroupHeartbeatRequest; +import org.apache.kafka.common.requests.ConsumerGroupHeartbeatResponse; +import org.apache.kafka.common.utils.LogContext; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.common.utils.Timer; +import org.slf4j.Logger; + +import java.util.ArrayList; +import java.util.Collections; + +public class HeartbeatRequestManager implements RequestManager { + private final Time time; + private final Logger logger; + + private final int rebalanceTimeoutMs; + + private final CoordinatorRequestManager coordinatorRequestManager; + private final SubscriptionState subscriptions; + private final HeartbeatRequestState heartbeatRequestState; + private final MembershipManager membershipManager; + private final ErrorEventHandler nonRetriableErrorHandler; + + public HeartbeatRequestManager( + final Time time, + final LogContext logContext, + final ConsumerConfig config, + final CoordinatorRequestManager coordinatorRequestManager, + final SubscriptionState subscriptions, + final MembershipManager membershipManager, + final ErrorEventHandler nonRetriableErrorHandler) { + this.coordinatorRequestManager = coordinatorRequestManager; + this.time = time; + this.logger = logContext.logger(HeartbeatRequestManager.class); + this.subscriptions = subscriptions; + this.membershipManager = membershipManager; + this.nonRetriableErrorHandler = nonRetriableErrorHandler; + this.rebalanceTimeoutMs = config.getInt(CommonClientConfigs.MAX_POLL_INTERVAL_MS_CONFIG); + + long heartbeatIntervalMs = config.getInt(ConsumerConfig.HEARTBEAT_INTERVAL_MS_CONFIG); + long retryBackoffMs = config.getLong(ConsumerConfig.RETRY_BACKOFF_MS_CONFIG); + long retryBackoffMaxMs = config.getLong(ConsumerConfig.RETRY_BACKOFF_MAX_MS_CONFIG); + this.heartbeatRequestState = new HeartbeatRequestState(logContext, time, heartbeatIntervalMs, retryBackoffMs, + retryBackoffMaxMs, rebalanceTimeoutMs); + } + + // Visible for testing + HeartbeatRequestManager( + final Time time, + final LogContext logContext, + final ConsumerConfig config, + final CoordinatorRequestManager coordinatorRequestManager, + final SubscriptionState subscriptions, + final MembershipManager membershipManager, + final HeartbeatRequestState heartbeatRequestState, + final ErrorEventHandler nonRetriableErrorHandler) { + this.time = time; + this.logger = logContext.logger(this.getClass()); + this.subscriptions = subscriptions; + this.rebalanceTimeoutMs = config.getInt(CommonClientConfigs.MAX_POLL_INTERVAL_MS_CONFIG); + this.coordinatorRequestManager = coordinatorRequestManager; + this.heartbeatRequestState = heartbeatRequestState; + this.membershipManager = membershipManager; + this.nonRetriableErrorHandler = nonRetriableErrorHandler; + } + + @Override + public NetworkClientDelegate.PollResult poll(long currentTimeMs) { + if (!coordinatorRequestManager.coordinator().isPresent() || membershipManager.notInGroup()) { + return new NetworkClientDelegate.PollResult( + Long.MAX_VALUE, Collections.emptyList()); + } + + if (!heartbeatRequestState.canSendRequest(currentTimeMs)) { + return new NetworkClientDelegate.PollResult( + heartbeatRequestState.nextHeartbeatMs(currentTimeMs), + Collections.emptyList()); + } + this.heartbeatRequestState.onSendAttempt(currentTimeMs); + NetworkClientDelegate.UnsentRequest request = makeHeartbeatRequest(); + // return Long.MAX_VALUE because we will update the timer when the response is received + return new NetworkClientDelegate.PollResult(Long.MAX_VALUE, Collections.singletonList(request)); + } + + private NetworkClientDelegate.UnsentRequest makeHeartbeatRequest() { + ConsumerGroupHeartbeatRequestData data = new ConsumerGroupHeartbeatRequestData() + .setGroupId(membershipManager.groupId()) + .setMemberEpoch(membershipManager.memberEpoch()) + .setMemberId(membershipManager.memberId()) + .setRebalanceTimeoutMs(rebalanceTimeoutMs); + + membershipManager.groupInstanceId().ifPresent(data::setInstanceId); + + if (this.subscriptions.hasPatternSubscription()) { + // We haven't discsussed how Regex is stored in the consumer. We could do it in the subscriptionState + // , in the memberStateManager, or here. + // data.setSubscribedTopicRegex(regex) + } else { + data.setSubscribedTopicNames(new ArrayList<>(this.subscriptions.subscription())); + } + + if (this.membershipManager.assignorSelection().serverAssignor().isPresent()) { + data.setServerAssignor(this.membershipManager.assignorSelection().serverAssignor().get()); + } + + NetworkClientDelegate.UnsentRequest request = new NetworkClientDelegate.UnsentRequest( + new ConsumerGroupHeartbeatRequest.Builder(data), + coordinatorRequestManager.coordinator()); + + request.future().whenComplete((response, exception) -> { + final long currentTimeMs = time.milliseconds(); + if (exception == null) { + onSuccess((ConsumerGroupHeartbeatResponse) response.responseBody(), currentTimeMs); + } else { + onFailure(exception, currentTimeMs); + } + }); + return request; + } + + private void onFailure(final Throwable exception, final long responseTimeMs) { + this.heartbeatRequestState.onFailedAttempt(responseTimeMs); + logger.debug("failed sending heartbeat due to {}", exception.getMessage()); + } + + private void onSuccess(final ConsumerGroupHeartbeatResponse response, long currentTimeMs) { + if (response.data().errorCode() == Errors.NONE.code()) { + this.heartbeatRequestState.onSuccessfulAttempt(currentTimeMs); + this.heartbeatRequestState.reset(); + try { + membershipManager.updateState(response.data()); + } catch (KafkaException e) { + logger.error("Received unexpected error in heartbeat response: {}", e.getMessage()); + } + return; + } + + onError(response, currentTimeMs); + } + + private void onError(final ConsumerGroupHeartbeatResponse response, + final long currentTimeMs) { + + this.heartbeatRequestState.onFailedAttempt(currentTimeMs); + short errorCode = response.data().errorCode(); + if (errorCode == Errors.NOT_COORDINATOR.code() || errorCode == Errors.COORDINATOR_NOT_AVAILABLE.code()) { + logger.info("GroupHeartbeatRequest failed: coordinator is either not started or not valid. Retrying in " + + "{}ms: {}", + heartbeatRequestState.remainingBackoffMs(currentTimeMs), + response.data().errorMessage()); + coordinatorRequestManager.markCoordinatorUnknown(response.data().errorMessage(), currentTimeMs); + } else if (errorCode == Errors.COORDINATOR_LOAD_IN_PROGRESS.code()) { + // retry + logger.info("GroupHeartbeatRequest failed: Coordinator {} is loading. Retrying in {}ms: {}", + coordinatorRequestManager.coordinator(), + heartbeatRequestState.remainingBackoffMs(currentTimeMs), + response.data().errorMessage()); + } else if (errorCode == Errors.GROUP_AUTHORIZATION_FAILED.code()) { + GroupAuthorizationException error = GroupAuthorizationException.forGroupId(membershipManager.groupId()); + logger.error("GroupHeartbeatRequest failed due to group authorization failure: {}", error.getMessage()); + nonRetriableErrorHandler.handle(error); + } else if (errorCode == Errors.INVALID_REQUEST.code()) { + logger.error("GroupHeartbeatRequest failed due to fatal error: {}", response.data().errorMessage()); + nonRetriableErrorHandler.handle(Errors.INVALID_REQUEST.exception()); + } else if (errorCode == Errors.GROUP_MAX_SIZE_REACHED.code()) { + logger.error("GroupHeartbeatRequest failed due to the max group size limit: {}", + response.data().errorMessage()); + nonRetriableErrorHandler.handle(Errors.GROUP_MAX_SIZE_REACHED.exception()); + } else if (errorCode == Errors.UNSUPPORTED_ASSIGNOR.code()) { + logger.error("GroupHeartbeatRequest failed due to unsupported assignor {}: {}", + membershipManager.assignorSelection(), response.data().errorMessage()); + nonRetriableErrorHandler.handle(Errors.UNSUPPORTED_ASSIGNOR.exception()); + } else if (errorCode == Errors.UNRELEASED_INSTANCE_ID.code()) { + logger.error("GroupHeartbeatRequest failed due to the instance id {} was not released: {}", + membershipManager.groupInstanceId().orElse("null"), + response.data().errorMessage()); + nonRetriableErrorHandler.handle(Errors.UNRELEASED_INSTANCE_ID.exception()); + } + membershipManager.updateState(response.data()); Review Comment: Thanks, I made some update to the manager, in particular, I split the fatal error out of the updateState, LMK if you like the change, or we could do better. -- This is an automated message from the Apache Git Service. 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