| /** |
| * 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.resourcegroup; |
| |
| import com.google.common.collect.Sets; |
| import java.util.HashSet; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.function.Consumer; |
| import org.apache.pulsar.broker.PulsarService; |
| import org.apache.pulsar.broker.resources.ResourceGroupResources; |
| import org.apache.pulsar.client.admin.PulsarAdminException; |
| import org.apache.pulsar.common.policies.data.ResourceGroup; |
| import org.apache.pulsar.metadata.api.Notification; |
| import org.apache.pulsar.metadata.api.NotificationType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Resource Group Config Listener |
| * |
| * <P>Meta data store listener of updates to resource group config. |
| * <P>Listens to resource group configuration changes and updates internal datastructures. |
| * |
| * @see <a href="https://github.com/apache/pulsar/wiki/PIP-82%3A-Tenant-and-namespace-level-rate-limiting">Global-quotas</a> |
| * |
| */ |
| public class ResourceGroupConfigListener implements Consumer<Notification> { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ResourceGroupConfigListener.class); |
| private final ResourceGroupService rgService; |
| private final PulsarService pulsarService; |
| private final ResourceGroupResources rgResources; |
| private final ResourceGroupNamespaceConfigListener rgNamespaceConfigListener; |
| |
| public ResourceGroupConfigListener(ResourceGroupService rgService, PulsarService pulsarService) { |
| this.rgService = rgService; |
| this.pulsarService = pulsarService; |
| this.rgResources = pulsarService.getPulsarResources().getResourcegroupResources(); |
| loadAllResourceGroups(); |
| this.rgResources.getStore().registerListener(this); |
| rgNamespaceConfigListener = new ResourceGroupNamespaceConfigListener( |
| rgService, pulsarService, this); |
| } |
| |
| private void loadAllResourceGroups() { |
| rgResources.listResourceGroupsAsync().whenCompleteAsync((rgList, ex) -> { |
| if (ex != null) { |
| LOG.error("Exception when fetching resource groups", ex); |
| return; |
| } |
| final Set<String> existingSet = rgService.resourceGroupGetAll(); |
| HashSet<String> newSet = new HashSet<>(); |
| |
| for (String rgName : rgList) { |
| newSet.add(rgName); |
| } |
| |
| final Sets.SetView<String> deleteList = Sets.difference(existingSet, newSet); |
| |
| for (String rgName: deleteList) { |
| deleteResourceGroup(rgName); |
| } |
| |
| final Sets.SetView<String> addList = Sets.difference(newSet, existingSet); |
| for (String rgName: addList) { |
| pulsarService.getPulsarResources().getResourcegroupResources() |
| .getResourceGroupAsync(rgName).thenAcceptAsync(optionalRg -> { |
| ResourceGroup rg = optionalRg.get(); |
| createResourceGroup(rgName, rg); |
| }).exceptionally((ex1) -> { |
| LOG.error("Failed to fetch resourceGroup", ex1); |
| return null; |
| }); |
| } |
| }); |
| } |
| |
| public synchronized void deleteResourceGroup(String rgName) { |
| try { |
| if (rgService.resourceGroupGet(rgName) != null) { |
| LOG.info("Deleting resource group {}", rgName); |
| rgService.resourceGroupDelete(rgName); |
| } |
| } catch (PulsarAdminException e) { |
| LOG.error("Got exception while deleting resource group {}, {}", rgName, e); |
| } |
| } |
| |
| public synchronized void createResourceGroup(String rgName, ResourceGroup rg) { |
| if (rgService.resourceGroupGet(rgName) == null) { |
| LOG.info("Creating resource group {}, {}", rgName, rg.toString()); |
| try { |
| rgService.resourceGroupCreate(rgName, rg); |
| } catch (PulsarAdminException ex1) { |
| LOG.error("Got an exception while creating RG {}", rgName, ex1); |
| } |
| } |
| } |
| |
| private void updateResourceGroup(String rgName) { |
| rgResources.getResourceGroupAsync(rgName).whenComplete((optionalRg, ex) -> { |
| if (ex != null) { |
| LOG.error("Exception when getting resource group {}", rgName, ex); |
| return; |
| } |
| ResourceGroup rg = optionalRg.get(); |
| try { |
| LOG.info("Updating resource group {}, {}", rgName, rg.toString()); |
| rgService.resourceGroupUpdate(rgName, rg); |
| } catch (PulsarAdminException ex1) { |
| LOG.error("Got an exception while creating resource group {}", rgName, ex1); |
| } |
| }); |
| } |
| |
| @Override |
| public void accept(Notification notification) { |
| String notifyPath = notification.getPath(); |
| |
| if (!ResourceGroupResources.isResourceGroupPath(notifyPath)) { |
| return; |
| } |
| LOG.info("Metadata store notification: Path {}, Type {}", notifyPath, notification.getType()); |
| |
| Optional<String> rgName = ResourceGroupResources.resourceGroupNameFromPath(notifyPath); |
| if ((notification.getType() == NotificationType.ChildrenChanged) |
| || (notification.getType() == NotificationType.Created)) { |
| loadAllResourceGroups(); |
| } else if (rgName.isPresent()) { |
| switch (notification.getType()) { |
| case Modified: |
| updateResourceGroup(rgName.get()); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| } |