com.alibaba.csp.sentinel.adapter.dubbo.fallback.DubboFallback Maven / Gradle / Ivy
/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* Licensed 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 com.alibaba.csp.sentinel.adapter.dubbo.fallback;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.Result;
/**
* Fallback handler for Dubbo services.
*
* @author Eric Zhao
*/
@FunctionalInterface
public interface DubboFallback {
/**
* Handle the block exception and provide fallback result.
*
* @param invoker Dubbo invoker
* @param invocation Dubbo invocation
* @param ex block exception
* @return fallback result
*/
Result handle(Invoker invoker, Invocation invocation, BlockException ex);
}