kafka TaskMetadata 源码

  • 2022-10-20
  • 浏览 (42)

kafka TaskMetadata 代码


 * 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.kafka.streams;

import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.streams.processor.TaskId;

import java.util.Map;
import java.util.Optional;
import java.util.Set;

 * Metadata of a task.
public interface TaskMetadata {

     * Task ID of the task.
     * @return task ID consisting of subtopology and partition ID
    TaskId taskId();

     * Source topic partitions of the task.
     * @return source topic partitions
    Set<TopicPartition> topicPartitions();

     * Offsets of the source topic partitions committed so far by the task.
     * @return map from source topic partitions to committed offsets
    Map<TopicPartition, Long> committedOffsets();

     * End offsets of the source topic partitions of the task.
     * @return map source topic partition to end offsets
    Map<TopicPartition, Long> endOffsets();

     * Time task idling started. If the task is not currently idling it will return empty.
     * @return time when task idling started, empty {@code Optional} if the task is currently not idling
    Optional<Long> timeCurrentIdlingStarted();

     * Compares the specified object with this TaskMetadata. Returns {@code true} if and only if the specified object is
     * also a TaskMetadata and both {@code taskId()} and {@code topicPartitions()} are equal.
     * @return {@code true} if this object is the same as the obj argument; {@code false} otherwise.
    boolean equals(final Object o);

     * Returns the hash code value for this TaskMetadata. The hash code of a list is defined to be the result of the following calculation:
     * <pre>
     * {@code
     * Objects.hash(taskId(), topicPartitions());
     * }
     * </pre>
     * @return a hash code value for this object.
    int hashCode();



kafka 源码目录


kafka KafkaClientSupplier 源码

kafka KafkaStreams 源码

kafka KeyQueryMetadata 源码

kafka KeyValue 源码

kafka LagInfo 源码

kafka StoreQueryParameters 源码

kafka StreamsBuilder 源码

kafka StreamsConfig 源码

kafka StreamsMetadata 源码

kafka StreamsMetrics 源码

0  赞