dubbo Directory 源码
dubbo Directory 代码
文件路径：/dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/Directory.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.rpc.cluster;
import org.apache.dubbo.common.Node;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.utils.CollectionUtils;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.RpcException;
import java.util.List;
/**
* Directory. (SPI, Prototype, ThreadSafe)
* <p>
* <a href="http://en.wikipedia.org/wiki/Directory_service">Directory Service</a>
*
* @see org.apache.dubbo.rpc.cluster.Cluster#join(Directory)
*/
public interface Directory<T> extends Node {
/**
* get service type.
*
* @return service type.
*/
Class<T> getInterface();
/**
* list invokers.
* filtered by invocation
*
* @return invokers
*/
List<Invoker<T>> list(Invocation invocation) throws RpcException;
/**
* list invokers
* include all invokers from registry
*/
List<Invoker<T>> getAllInvokers();
URL getConsumerUrl();
boolean isDestroyed();
default boolean isEmpty() {
return CollectionUtils.isEmpty(getAllInvokers());
}
default boolean isServiceDiscovery() {
return false;
}
void discordAddresses();
RouterChain<T> getRouterChain();
/**
* invalidate an invoker, add it into reconnect task, remove from list next time
* will be recovered by address refresh notification or reconnect success notification
*
* @param invoker invoker to invalidate
*/
void addInvalidateInvoker(Invoker<T> invoker);
/**
* disable an invoker, remove from list next time
* will be removed when invoker is removed by address refresh notification
* using in service offline notification
*
* @param invoker invoker to invalidate
*/
void addDisabledInvoker(Invoker<T> invoker);
/**
* recover a disabled invoker
*
* @param invoker invoker to invalidate
*/
void recoverDisabledInvoker(Invoker<T> invoker);
default boolean isNotificationReceived() {
return false;
}
}
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