| /** |
| * 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 java.util.function.Consumer; |
| import org.apache.pulsar.broker.PulsarService; |
| import org.apache.pulsar.broker.resources.NamespaceResources; |
| import org.apache.pulsar.broker.resources.TenantResources; |
| import org.apache.pulsar.client.admin.PulsarAdminException; |
| import org.apache.pulsar.common.naming.NamespaceName; |
| import org.apache.pulsar.common.policies.data.Policies; |
| import org.apache.pulsar.metadata.api.Notification; |
| import org.apache.pulsar.metadata.api.NotificationType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Resource Group Namespace Config Listener |
| * |
| * <P>Meta data store listener of updates to namespace attachment to resource groups. |
| * <P>Listens to namespace(policy) config changes and updates internal data structures. |
| * |
| * @see <a href="https://github.com/apache/pulsar/wiki/PIP-82%3A-Tenant-and-namespace-level-rate-limiting">Global-quotas</a> |
| * |
| */ |
| public class ResourceGroupNamespaceConfigListener implements Consumer<Notification> { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ResourceGroupNamespaceConfigListener.class); |
| private final ResourceGroupService rgService; |
| private final PulsarService pulsarService; |
| private final NamespaceResources namespaceResources; |
| private final TenantResources tenantResources; |
| private final ResourceGroupConfigListener rgConfigListener; |
| |
| public ResourceGroupNamespaceConfigListener(ResourceGroupService rgService, PulsarService pulsarService, |
| ResourceGroupConfigListener rgConfigListener) { |
| this.rgService = rgService; |
| this.pulsarService = pulsarService; |
| this.namespaceResources = pulsarService.getPulsarResources().getNamespaceResources(); |
| this.tenantResources = pulsarService.getPulsarResources().getTenantResources(); |
| this.rgConfigListener = rgConfigListener; |
| loadAllNamespaceResourceGroups(); |
| this.namespaceResources.getStore().registerListener(this); |
| } |
| |
| private void updateNamespaceResourceGroup(NamespaceName nsName) { |
| namespaceResources.getPoliciesAsync(nsName).whenCompleteAsync((optionalPolicies, ex) -> { |
| if (ex != null) { |
| LOG.error("Exception when getting namespace {}", nsName, ex); |
| return; |
| } |
| Policies policy = optionalPolicies.get(); |
| reconcileNamespaceResourceGroup(nsName, policy); |
| }); |
| } |
| |
| private void loadAllNamespaceResourceGroups() { |
| tenantResources.listTenantsAsync().whenComplete((tenantList, ex) -> { |
| if (ex != null) { |
| LOG.error("Exception when fetching tenants", ex); |
| return; |
| } |
| for (String ts: tenantList) { |
| namespaceResources.listNamespacesAsync(ts).whenComplete((nsList, ex1) -> { |
| if (ex1 != null) { |
| LOG.error("Exception when fetching namespaces", ex1); |
| } else { |
| for (String ns : nsList) { |
| NamespaceName nsn = NamespaceName.get(ts, ns); |
| namespaceResources.namespaceExistsAsync(nsn) |
| .thenAccept(exists -> { |
| if (exists) { |
| updateNamespaceResourceGroup(NamespaceName.get(ts, ns)); |
| } |
| }); |
| } |
| } |
| }); |
| } |
| }); |
| } |
| |
| public void reloadAllNamespaceResourceGroups() { |
| loadAllNamespaceResourceGroups(); |
| } |
| |
| public void reconcileNamespaceResourceGroup(NamespaceName ns, Policies policy) { |
| boolean delete = false, add = false; |
| org.apache.pulsar.broker.resourcegroup.ResourceGroup current = rgService |
| .getNamespaceResourceGroup(ns); |
| |
| if (policy == null || policy.resource_group_name == null) { |
| if (current != null) { |
| delete = true; |
| } |
| } else { |
| if (current == null) { |
| add = true; |
| } |
| if (current != null && !policy.resource_group_name.equals(current.resourceGroupName)) { |
| delete = true; |
| } |
| } |
| try { |
| if (delete) { |
| LOG.info("Unregistering namespace {} from resource group {}", ns, current.resourceGroupName); |
| rgService.unRegisterNameSpace(current.resourceGroupName, ns); |
| } |
| if (add) { |
| LOG.info("Registering namespace {} with resource group {}", ns, policy.resource_group_name); |
| rgService.registerNameSpace(policy.resource_group_name, ns); |
| } |
| } catch (PulsarAdminException e) { |
| LOG.error("Failed to {} namespace {} with resource group {}", |
| delete ? "unregister" : "register", ns, policy.resource_group_name, e); |
| } |
| } |
| |
| @Override |
| public void accept(Notification notification) { |
| String notifyPath = notification.getPath(); |
| |
| if (!NamespaceResources.pathIsFromNamespace(notifyPath)) { |
| return; |
| } |
| String[] parts = notifyPath.split("/"); |
| if (parts.length < 4) { |
| // We are only interested in the tenant and namespace level notifications |
| return; |
| } |
| LOG.info("Metadata store notification: Path {}, Type {}", notifyPath, notification.getType()); |
| |
| if (parts.length == 4 && notification.getType() == NotificationType.ChildrenChanged) { |
| // Namespace add/delete |
| reloadAllNamespaceResourceGroups(); |
| } else if (parts.length == 5) { |
| switch (notification.getType()) { |
| case Modified: { |
| NamespaceName nsName = NamespaceResources.namespaceFromPath(notifyPath); |
| updateNamespaceResourceGroup(nsName); |
| break; |
| } |
| case Deleted: { |
| NamespaceName nsName = NamespaceResources.namespaceFromPath(notifyPath); |
| ResourceGroup rg = rgService |
| .getNamespaceResourceGroup(nsName); |
| if (rg != null) { |
| try { |
| rgService.unRegisterNameSpace(rg.resourceGroupName, nsName); |
| } catch (PulsarAdminException e) { |
| LOG.error("Failed to unregister namespace", e); |
| } |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| } |
| } |