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/*
* 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.metadata.store.failover;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.extension.SPI;
@SPI("failover")
public interface FailoverCondition {
/**
* Whether metadata should be reported.
*
* @param url registry url, eg: zookeeper://127.0.0.1:2181
* @return true store metadata to the specified URL.
*/
boolean shouldRegister(URL url);
/**
* Whether metadata should be read from specified url.
*
* @param url registry url, eg: zookeeper://127.0.0.1:2181
* @return true read metadata from specified URL.
*/
boolean shouldQuery(URL url);
/**
* Judge whether it is a local region or a local datacenter.
*
* Allows the local region or datacenter to be read first.
*
* @param url
* @return
*/
boolean isLocalDataCenter(URL url);
}