| /** |
| * 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.loadbalance; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.CompletionException; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.pulsar.broker.PulsarServerException; |
| import org.apache.pulsar.broker.PulsarService; |
| import org.apache.pulsar.broker.loadbalance.impl.PulsarResourceDescription; |
| import org.apache.pulsar.broker.loadbalance.impl.SimpleResourceUnit; |
| import org.apache.pulsar.common.naming.ServiceUnitId; |
| import org.apache.pulsar.common.stats.Metrics; |
| import org.apache.pulsar.metadata.api.MetadataStoreException; |
| import org.apache.pulsar.metadata.api.coordination.LockManager; |
| import org.apache.pulsar.policies.data.loadbalancer.LoadManagerReport; |
| import org.apache.pulsar.policies.data.loadbalancer.LocalBrokerData; |
| |
| @Slf4j |
| public class NoopLoadManager implements LoadManager { |
| |
| private PulsarService pulsar; |
| private String lookupServiceAddress; |
| private ResourceUnit localResourceUnit; |
| private LockManager<LocalBrokerData> lockManager; |
| |
| @Override |
| public void initialize(PulsarService pulsar) { |
| this.pulsar = pulsar; |
| this.lockManager = pulsar.getCoordinationService().getLockManager(LocalBrokerData.class); |
| } |
| |
| @Override |
| public void start() throws PulsarServerException { |
| lookupServiceAddress = getBrokerAddress(); |
| localResourceUnit = new SimpleResourceUnit(String.format("http://%s", lookupServiceAddress), |
| new PulsarResourceDescription()); |
| |
| LocalBrokerData localData = new LocalBrokerData(pulsar.getSafeWebServiceAddress(), |
| pulsar.getWebServiceAddressTls(), |
| pulsar.getBrokerServiceUrl(), pulsar.getBrokerServiceUrlTls(), pulsar.getAdvertisedListeners()); |
| localData.setProtocols(pulsar.getProtocolDataToAdvertise()); |
| String brokerReportPath = LoadManager.LOADBALANCE_BROKERS_ROOT + "/" + lookupServiceAddress; |
| |
| try { |
| log.info("Acquiring broker resource lock on {}", brokerReportPath); |
| lockManager.acquireLock(brokerReportPath, localData).join(); |
| log.info("Acquired broker resource lock on {}", brokerReportPath); |
| } catch (CompletionException ce) { |
| throw new PulsarServerException(MetadataStoreException.unwrap(ce)); |
| } |
| } |
| |
| private String getBrokerAddress() { |
| return String.format("%s:%s", pulsar.getAdvertisedAddress(), |
| pulsar.getConfiguration().getWebServicePort().isPresent() |
| ? pulsar.getConfiguration().getWebServicePort().get() |
| : pulsar.getConfiguration().getWebServicePortTls().get()); |
| } |
| |
| @Override |
| public boolean isCentralized() { |
| return false; |
| } |
| |
| @Override |
| public Optional<ResourceUnit> getLeastLoaded(ServiceUnitId su) throws Exception { |
| return Optional.of(localResourceUnit); |
| } |
| |
| @Override |
| public LoadManagerReport generateLoadReport() throws Exception { |
| return null; |
| } |
| |
| @Override |
| public void setLoadReportForceUpdateFlag() { |
| // do nothing |
| } |
| |
| @Override |
| public void writeLoadReportOnZookeeper() throws Exception { |
| // do nothing |
| } |
| |
| @Override |
| public void writeResourceQuotasToZooKeeper() throws Exception { |
| // do nothing |
| } |
| |
| @Override |
| public List<Metrics> getLoadBalancingMetrics() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public void doLoadShedding() { |
| // do nothing |
| } |
| |
| @Override |
| public void doNamespaceBundleSplit() throws Exception { |
| // do nothing |
| } |
| |
| @Override |
| public void disableBroker() throws Exception { |
| // do nothing |
| } |
| |
| @Override |
| public Set<String> getAvailableBrokers() throws Exception { |
| return Collections.singleton(lookupServiceAddress); |
| } |
| |
| @Override |
| public void stop() throws PulsarServerException { |
| if (lockManager != null) { |
| try { |
| lockManager.close(); |
| } catch (Exception e) { |
| throw new PulsarServerException(e); |
| } |
| } |
| } |
| |
| } |