| /* |
| * 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 com.alibaba.dubbo.rpc.filter; |
| |
| import com.alibaba.dubbo.common.Constants; |
| import com.alibaba.dubbo.common.extension.Activate; |
| import com.alibaba.dubbo.rpc.Filter; |
| import com.alibaba.dubbo.rpc.Invocation; |
| import com.alibaba.dubbo.rpc.Invoker; |
| import com.alibaba.dubbo.rpc.Result; |
| import com.alibaba.dubbo.rpc.RpcException; |
| import com.alibaba.dubbo.rpc.filter.tps.DefaultTPSLimiter; |
| import com.alibaba.dubbo.rpc.filter.tps.TPSLimiter; |
| |
| /** |
| * Limit TPS for either service or service's particular method |
| */ |
| @Activate(group = Constants.PROVIDER, value = Constants.TPS_LIMIT_RATE_KEY) |
| public class TpsLimitFilter implements Filter { |
| |
| private final TPSLimiter tpsLimiter = new DefaultTPSLimiter(); |
| |
| @Override |
| public Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException { |
| |
| if (!tpsLimiter.isAllowable(invoker.getUrl(), invocation)) { |
| throw new RpcException( |
| "Failed to invoke service " + |
| invoker.getInterface().getName() + |
| "." + |
| invocation.getMethodName() + |
| " because exceed max service tps."); |
| } |
| |
| return invoker.invoke(invocation); |
| } |
| |
| } |