kirktrue commented on code in PR #12945: URL: https://github.com/apache/kafka/pull/12945#discussion_r1041415886
########## clients/src/main/java/org/apache/kafka/clients/consumer/internals/OffsetsFinder.java: ########## @@ -0,0 +1,805 @@ +/* + * 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.ApiVersions; +import org.apache.kafka.clients.ClientResponse; +import org.apache.kafka.clients.Metadata; +import org.apache.kafka.clients.NodeApiVersions; +import org.apache.kafka.clients.StaleMetadataException; +import org.apache.kafka.clients.consumer.LogTruncationException; +import org.apache.kafka.clients.consumer.OffsetAndMetadata; +import org.apache.kafka.clients.consumer.OffsetAndTimestamp; +import org.apache.kafka.clients.consumer.OffsetResetStrategy; +import org.apache.kafka.clients.consumer.internals.OffsetsForLeaderEpochClient.OffsetForEpochResult; +import org.apache.kafka.clients.consumer.internals.SubscriptionState.FetchPosition; +import org.apache.kafka.common.Cluster; +import org.apache.kafka.common.IsolationLevel; +import org.apache.kafka.common.KafkaException; +import org.apache.kafka.common.Node; +import org.apache.kafka.common.PartitionInfo; +import org.apache.kafka.common.TopicPartition; +import org.apache.kafka.common.errors.InvalidTopicException; +import org.apache.kafka.common.errors.RetriableException; +import org.apache.kafka.common.errors.TimeoutException; +import org.apache.kafka.common.errors.TopicAuthorizationException; +import org.apache.kafka.common.message.ApiVersionsResponseData.ApiVersion; +import org.apache.kafka.common.message.ListOffsetsRequestData.ListOffsetsPartition; +import org.apache.kafka.common.message.ListOffsetsResponseData.ListOffsetsPartitionResponse; +import org.apache.kafka.common.message.ListOffsetsResponseData.ListOffsetsTopicResponse; +import org.apache.kafka.common.protocol.ApiKeys; +import org.apache.kafka.common.protocol.Errors; +import org.apache.kafka.common.requests.ListOffsetsRequest; +import org.apache.kafka.common.requests.ListOffsetsResponse; +import org.apache.kafka.common.requests.MetadataRequest; +import org.apache.kafka.common.requests.MetadataResponse; +import org.apache.kafka.common.requests.OffsetsForLeaderEpochRequest; +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.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Set; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.concurrent.atomic.AtomicReference; +import java.util.function.Function; +import java.util.stream.Collectors; + +public class OffsetsFinder { + private final Logger log; + private final ConsumerNetworkClient client; + private final Time time; + private final long retryBackoffMs; + private final long requestTimeoutMs; + private final ConsumerMetadata metadata; + private final SubscriptionState subscriptions; + private final IsolationLevel isolationLevel; + private final AtomicReference<RuntimeException> cachedListOffsetsException = new AtomicReference<>(); + private final AtomicReference<RuntimeException> cachedOffsetForLeaderException = new AtomicReference<>(); + private final OffsetsForLeaderEpochClient offsetsForLeaderEpochClient; + private final ApiVersions apiVersions; + private final AtomicInteger metadataUpdateVersion = new AtomicInteger(-1); + + public OffsetsFinder(LogContext logContext, + ConsumerNetworkClient client, + ConsumerMetadata metadata, + SubscriptionState subscriptions, + Time time, + long retryBackoffMs, + long requestTimeoutMs, + IsolationLevel isolationLevel, + ApiVersions apiVersions) { + this.log = logContext.logger(Fetcher.class); + this.time = time; + this.client = client; + this.metadata = metadata; + this.subscriptions = subscriptions; + this.retryBackoffMs = retryBackoffMs; + this.requestTimeoutMs = requestTimeoutMs; + this.isolationLevel = isolationLevel; + this.apiVersions = apiVersions; + this.offsetsForLeaderEpochClient = new OffsetsForLeaderEpochClient(client, logContext); + } + + /** + * Represents data about an offset returned by a broker. + */ + static class ListOffsetData { + final long offset; + final Long timestamp; // null if the broker does not support returning timestamps + final Optional<Integer> leaderEpoch; // empty if the leader epoch is not known + + ListOffsetData(long offset, Long timestamp, Optional<Integer> leaderEpoch) { + this.offset = offset; + this.timestamp = timestamp; + this.leaderEpoch = leaderEpoch; + } + } + + /** + * Get topic metadata for all topics in the cluster + * @param timer Timer bounding how long this method can block + * @return The map of topics with their partition information + */ + public Map<String, List<PartitionInfo>> getAllTopicMetadata(Timer timer) { + return getTopicMetadata(MetadataRequest.Builder.allTopics(), timer); + } + + /** + * Get metadata for all topics present in Kafka cluster + * + * @param request The MetadataRequest to send + * @param timer Timer bounding how long this method can block + * @return The map of topics with their partition information + */ + public Map<String, List<PartitionInfo>> getTopicMetadata(MetadataRequest.Builder request, Timer timer) { Review Comment: Agreed. Is adding it to `KafkaConsumer` directly OK? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
