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:
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zookeeper: //localhost:2181
zookeeper: //localhost:2181?client=zkclient
zookeeper: //localhost:2181?backup=localhost:2182,localhost:2183
zookeeper: //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 ]
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代码
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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" ));
}
}
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总结
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,谢谢大家对服务器之家的支持。如果你想了解更多相关内容请查看下面相关链接
原文链接:https://blog.csdn.net/isea533/article/details/84062301