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从dubbo zookeeper注册地址提取出zookeeper地址的方法

2024-07-14 08:43:19
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用途

项目中使用了 dubbo,注册中心使用的 zookeeper,使用 zookeeper 实现了一个简单的分布式锁(依赖 curator),因为配置文件存在 dubbo.registry 配置,为了直接使用这个地址来创建分布式锁,写了一个简单的方法来提取 zookeeper 地址。

效果

dubbo.registry 有多种配置方式,支持所有情况,下面是常见的例子和提取结果:

zookeeper://localhost:2181zookeeper://localhost:2181?client=zkclientzookeeper://localhost:2181?backup=localhost:2182,localhost:2183zookeeper://localhost:2181?client=zkclient&backup=localhost:2182,localhost:2183------------结果------------Optional[localhost:2181]Optional[localhost:2181]Optional[localhost:2181,localhost:2182,localhost:2182]Optional[localhost:2181,localhost:2183,localhost:2183]

代码

import java.util.Optional;public class ZookeeperURL {  public static final String PREFIX = "zookeeper://";  public static final String BACKUP = "backup=";  public static Optional<String> convertDubboRegistryToZookeeperURL(String dubboRegistry){    StringBuilder zookeeperURL = new StringBuilder();    if(dubboRegistry != null && dubboRegistry.startsWith(PREFIX)){      dubboRegistry = dubboRegistry.substring(PREFIX.length());      int index = dubboRegistry.indexOf("?");      if(index > 0){        zookeeperURL.append(dubboRegistry.substring(0, index));        dubboRegistry = dubboRegistry.substring(index + 1);        String[] dubboRegistries = dubboRegistry.split("&");        for (int i = 0; i < dubboRegistries.length; i++) {          if(dubboRegistries[i].startsWith(BACKUP)){            String[] backups = dubboRegistries[i].substring(BACKUP.length()).split(",");            for (int j = 0; j < backups.length; j++) {              zookeeperURL.append(",").append(backups[i]);            }          }        }      } else {        zookeeperURL.append(dubboRegistry);      }      return Optional.of(zookeeperURL.toString());    }    return Optional.empty();  }  public static void main(String[] args) {    System.out.println(convertDubboRegistryToZookeeperURL("zookeeper://localhost:2181"));    System.out.println(convertDubboRegistryToZookeeperURL("zookeeper://localhost:2181?client=zkclient"));    System.out.println(convertDubboRegistryToZookeeperURL("zookeeper://localhost:2181?backup=localhost:2182,localhost:2183"));    System.out.println(convertDubboRegistryToZookeeperURL("zookeeper://localhost:2181?client=zkclient&backup=localhost:2182,localhost:2183"));  }}

总结

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