| /*
|
| * Copyright 1999-2011 Alibaba Group.
|
| *
|
| * 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.dubbo.rpc; |
|
|
| import com.alibaba.dubbo.common.extension.SPI;
|
|
|
| /** |
| * Filter. (SPI, Singleton, ThreadSafe) |
| * |
| * @author william.liangf |
| */
|
| @SPI
|
| public interface Filter { |
| |
| /** |
| * do invoke filter. |
| * |
| * <code>
|
| * // before filter |
| * Result result = invoker.invoke(invocation);
|
| * // after filter
|
| * return result; |
| * </code> |
| * |
| * @see com.alibaba.dubbo.rpc.Invoker#invoke(Invocation) |
| * @param invoker service |
| * @param invocation invocation. |
| * @return invoke result. |
| * @throws RpcException |
| */
|
| Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException; |
| |
| } |
