dubbo CacheListener 源码

2022-10-20
浏览 (403)

dubbo CacheListener 代码

文件路径：/dubbo-configcenter/dubbo-configcenter-zookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.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.dubbo.configcenter.support.zookeeper;

import org.apache.dubbo.common.config.configcenter.ConfigurationListener;
import org.apache.dubbo.common.utils.CollectionUtils;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * one path has one zookeeperDataListener
 */
public class CacheListener {

    private Map<String, ZookeeperDataListener> pathKeyListeners = new ConcurrentHashMap<>();

    public CacheListener() {
    }

    public ZookeeperDataListener addListener(String pathKey, ConfigurationListener configurationListener, String key, String group) {
        ZookeeperDataListener zookeeperDataListener = pathKeyListeners.computeIfAbsent(pathKey,
            _pathKey -> new ZookeeperDataListener(_pathKey, key, group));
        zookeeperDataListener.addListener(configurationListener);
        return zookeeperDataListener;
    }

    public ZookeeperDataListener removeListener(String pathKey, ConfigurationListener configurationListener) {
        ZookeeperDataListener zookeeperDataListener = pathKeyListeners.get(pathKey);
        if (zookeeperDataListener != null) {
            zookeeperDataListener.removeListener(configurationListener);
            if (CollectionUtils.isEmpty(zookeeperDataListener.getListeners())) {
                pathKeyListeners.remove(pathKey);
            }
        }
        return zookeeperDataListener;
    }

    public ZookeeperDataListener getCachedListener(String pathKey) {
        return pathKeyListeners.get(pathKey);
    }

    public Map<String, ZookeeperDataListener> getPathKeyListeners() {
        return pathKeyListeners;
    }

    public void clear() {
        pathKeyListeners.clear();
    }
}

相关信息

dubbo 源码目录

相关文章

dubbo ZookeeperDataListener 源码

dubbo ZookeeperDynamicConfiguration 源码

dubbo ZookeeperDynamicConfigurationFactory 源码

0 赞

所属分类： 后端技术
本文标签： Java
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/981a8d695366487f930d75634ec91940

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...