kafka MetricsContext 源码

2022-10-20
浏览 (541)

kafka MetricsContext 代码

文件路径：/clients/src/main/java/org/apache/kafka/common/metrics/MetricsContext.java

/*
 * 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.common.metrics;

import org.apache.kafka.common.annotation.InterfaceStability;

import java.util.Map;

/**
 * MetricsContext encapsulates additional contextLabels about metrics exposed via a
 * {@link org.apache.kafka.common.metrics.MetricsReporter}
 *
 * <p>The {@link #contextLabels()} map provides following information:
 * <dl>
 *   <dt>in all components</dt>
 *   <dd>a {@code _namespace} field indicating the component exposing metrics
 *   e.g. kafka.server, kafka.consumer.
 *   The {@link JmxReporter} uses this as prefix for MBean names</dd>
 *
 *   <dt>for clients and streams libraries</dt>
 *   <dd>any freeform fields passed in via
 *   client properties in the form of {@code metrics.context.<key>=<value>}</dd>
 *
 *   <dt>for kafka brokers</dt>
 *   <dd>kafka.broker.id, kafka.cluster.id</dd>
 *
 *   <dt>for connect workers</dt>
 *   <dd>connect.kafka.cluster.id, connect.group.id</dd>
 * </dl>
 */
@InterfaceStability.Evolving
public interface MetricsContext {
    /* predefined fields */
    String NAMESPACE = "_namespace"; // metrics namespace, formerly jmx prefix

    /**
     * Returns the labels for this metrics context.
     *
     * @return the map of label keys and values; never null but possibly empty
     */
    Map<String, String> contextLabels();
}

相关信息

kafka 源码目录

相关文章

kafka CompoundStat 源码

kafka Gauge 源码

kafka JmxReporter 源码

kafka KafkaMetric 源码

kafka KafkaMetricsContext 源码

kafka Measurable 源码

kafka MeasurableStat 源码

kafka MetricConfig 源码

kafka MetricValueProvider 源码

kafka Metrics 源码

0 赞

所属分类： 大数据
本文标签： 大数据
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/40082ce3317f44a5abee26417ec59a63

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...