xjlgod commented on code in PR #6756: URL: https://github.com/apache/incubator-seata/pull/6756#discussion_r1899105127
########## server/src/main/java/org/apache/seata/server/limit/ratelimit/RateLimiterHandlerAbstract.java: ########## @@ -0,0 +1,122 @@ +/* + * 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.seata.server.limit.ratelimit; + +import org.apache.seata.common.XID; +import org.apache.seata.common.loader.EnhancedServiceLoader; +import org.apache.seata.common.util.NumberUtils; +import org.apache.seata.config.CachedConfigurationChangeListener; +import org.apache.seata.config.Configuration; +import org.apache.seata.config.ConfigurationChangeEvent; +import org.apache.seata.common.ConfigurationKeys; +import org.apache.seata.config.ConfigurationFactory; +import org.apache.seata.core.exception.TransactionExceptionCode; +import org.apache.seata.core.protocol.MessageType; +import org.apache.seata.core.protocol.ResultCode; +import org.apache.seata.core.protocol.transaction.AbstractTransactionRequestToTC; +import org.apache.seata.core.protocol.transaction.AbstractTransactionResponse; +import org.apache.seata.core.protocol.transaction.GlobalBeginResponse; +import org.apache.seata.core.rpc.RpcContext; +import org.apache.seata.server.limit.AbstractTransactionRequestHandler; +import org.apache.seata.server.metrics.MetricsPublisher; + +/** + * RateLimiterHandler + */ +public class RateLimiterHandlerAbstract extends AbstractTransactionRequestHandler implements CachedConfigurationChangeListener { + /** + * The instance of RateLimiterHandler + */ + private static volatile RateLimiterHandlerAbstract instance; + + /** + * The instance of RateLimiter + */ + private final RateLimiter rateLimiter; + + /** + * The config of RateLimiterHandler + */ + private final RateLimiterHandlerConfig config; + + public RateLimiterHandlerAbstract(RateLimiter rateLimiter) { + this.rateLimiter = rateLimiter; + this.config = new RateLimiterHandlerConfig(); + } + + private RateLimiterHandlerAbstract() { + rateLimiter = EnhancedServiceLoader.load(RateLimiter.class); + config = rateLimiter.obtainConfig(); + + Configuration config = ConfigurationFactory.getInstance(); + config.addConfigListener(ConfigurationKeys.RATE_LIMIT_ENABLE, this); + config.addConfigListener(ConfigurationKeys.RATE_LIMIT_BUCKET_TOKEN_NUM_PER_SECOND, this); + config.addConfigListener(ConfigurationKeys.RATE_LIMIT_BUCKET_TOKEN_MAX_NUM, this); + config.addConfigListener(ConfigurationKeys.RATE_LIMIT_BUCKET_TOKEN_INITIAL_NUM, this); + } + + @Override + public AbstractTransactionResponse handle(AbstractTransactionRequestToTC originRequest, RpcContext context) { + if (!rateLimiter.isEnable()) { + return next(originRequest, context); + } + + if (MessageType.TYPE_GLOBAL_BEGIN == originRequest.getTypeCode()) { + if (!rateLimiter.canPass()) { + GlobalBeginResponse response = new GlobalBeginResponse(); + response.setTransactionExceptionCode(TransactionExceptionCode.BeginFailed); + response.setResultCode(ResultCode.Failed); + RateLimitInfo rateLimitInfo = RateLimitInfo.generateRateLimitInfo(context.getApplicationId(), + RateLimitInfo.GLOBAL_BEGIN_FAILED, context.getClientId(), XID.getIpAddressAndPort()); + MetricsPublisher.postRateLimitEvent(rateLimitInfo); + response.setMsg(String.format("TransactionException[rate limit exception, rate limit info: %s]", rateLimitInfo)); + return response; + } + } + return next(originRequest, context); + } + + public static RateLimiterHandlerAbstract getInstance() { + if (instance == null) { + synchronized (RateLimiterHandlerAbstract.class) { + if (instance == null) { + instance = new RateLimiterHandlerAbstract(); + } + } + } + return instance; + } + + @Override + public void onChangeEvent(ConfigurationChangeEvent event) { + String dataId = event.getDataId(); + String newValue = event.getNewValue(); + if (ConfigurationKeys.RATE_LIMIT_ENABLE.equals(dataId)) { + config.setEnable(Boolean.parseBoolean(newValue)); + } + if (ConfigurationKeys.RATE_LIMIT_BUCKET_TOKEN_NUM_PER_SECOND.equals(dataId)) { + config.setBucketTokenNumPerSecond(NumberUtils.toInt(newValue, config.getBucketTokenNumPerSecond())); + } + if (ConfigurationKeys.RATE_LIMIT_BUCKET_TOKEN_MAX_NUM.equals(dataId)) { + config.setBucketTokenMaxNum(NumberUtils.toInt(newValue, config.getBucketTokenMaxNum())); + } + if (ConfigurationKeys.RATE_LIMIT_BUCKET_TOKEN_INITIAL_NUM.equals(dataId)) { + config.setBucketTokenInitialNum(NumberUtils.toInt(newValue, config.getBucketTokenInitialNum())); + } + rateLimiter.reInit(config); Review Comment: 因为想的是ratelimithandler下面可以通过spi加载不同的限流器，然后具体的限流器重新加载由具体的限流器实现 By ratelimithandler, you can load different current limiter through spi, and then the specific current limiter reloads by the new config from Ratelimithandler ########## server/src/main/resources/application.raft.example.yml: ########## @@ -131,6 +131,11 @@ seata: session: branch-async-queue-size: 5000 #branch async remove queue size enable-branch-async-remove: false #enable to asynchronous remove branchSession + ratelimit: Review Comment: fixed it ########## server/src/main/resources/application.example.yml: ########## @@ -159,6 +159,11 @@ seata: session: branch-async-queue-size: 5000 #branch async remove queue size enable-branch-async-remove: false #enable to asynchronous remove branchSession + ratelimit: Review Comment: fixed it -- This is an automated message from the Apache Git Service. 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