| /* |
| * 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.pulsar.broker.service; |
| |
| import java.util.concurrent.atomic.LongAdder; |
| import org.apache.pulsar.common.policies.data.Policies; |
| import org.apache.pulsar.common.policies.data.PublishRate; |
| |
| public class PublishRateLimiterImpl implements PublishRateLimiter { |
| protected volatile int publishMaxMessageRate = 0; |
| protected volatile long publishMaxByteRate = 0; |
| protected volatile boolean publishThrottlingEnabled = false; |
| protected volatile boolean publishRateExceeded = false; |
| protected volatile LongAdder currentPublishMsgCount = new LongAdder(); |
| protected volatile LongAdder currentPublishByteCount = new LongAdder(); |
| |
| public PublishRateLimiterImpl(Policies policies, String clusterName) { |
| update(policies, clusterName); |
| } |
| |
| public PublishRateLimiterImpl(PublishRate maxPublishRate) { |
| update(maxPublishRate); |
| } |
| |
| @Override |
| public void checkPublishRate() { |
| if (this.publishThrottlingEnabled && !publishRateExceeded) { |
| if (this.publishMaxByteRate > 0) { |
| long currentPublishByteRate = this.currentPublishByteCount.sum(); |
| if (currentPublishByteRate > this.publishMaxByteRate) { |
| publishRateExceeded = true; |
| return; |
| } |
| } |
| |
| if (this.publishMaxMessageRate > 0) { |
| long currentPublishMsgRate = this.currentPublishMsgCount.sum(); |
| if (currentPublishMsgRate > this.publishMaxMessageRate) { |
| publishRateExceeded = true; |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void incrementPublishCount(int numOfMessages, long msgSizeInBytes) { |
| if (this.publishThrottlingEnabled) { |
| this.currentPublishMsgCount.add(numOfMessages); |
| this.currentPublishByteCount.add(msgSizeInBytes); |
| } |
| } |
| |
| @Override |
| public boolean resetPublishCount() { |
| if (this.publishThrottlingEnabled) { |
| this.currentPublishMsgCount.reset(); |
| this.currentPublishByteCount.reset(); |
| this.publishRateExceeded = false; |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean isPublishRateExceeded() { |
| return publishRateExceeded; |
| } |
| |
| @Override |
| public void update(Policies policies, String clusterName) { |
| final PublishRate maxPublishRate = policies.publishMaxMessageRate != null |
| ? policies.publishMaxMessageRate.get(clusterName) |
| : null; |
| update(maxPublishRate); |
| } |
| |
| public void update(PublishRate maxPublishRate) { |
| if (maxPublishRate != null |
| && (maxPublishRate.publishThrottlingRateInMsg > 0 || maxPublishRate.publishThrottlingRateInByte > 0)) { |
| this.publishThrottlingEnabled = true; |
| this.publishMaxMessageRate = Math.max(maxPublishRate.publishThrottlingRateInMsg, 0); |
| this.publishMaxByteRate = Math.max(maxPublishRate.publishThrottlingRateInByte, 0); |
| } else { |
| this.publishMaxMessageRate = 0; |
| this.publishMaxByteRate = 0; |
| this.publishThrottlingEnabled = false; |
| } |
| resetPublishCount(); |
| } |
| |
| @Override |
| public boolean tryAcquire(int numbers, long bytes) { |
| return false; |
| } |
| |
| @Override |
| public void close() { |
| // no-op |
| } |
| } |