cmccabe commented on a change in pull request #11649: URL: https://github.com/apache/kafka/pull/11649#discussion_r801164871
########## File path: metadata/src/main/java/org/apache/kafka/metadata/authorizer/ClusterMetadataAuthorizer.java ########## @@ -0,0 +1,127 @@ +/* + * 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.kafka.metadata.authorizer; + +import org.apache.kafka.common.Uuid; +import org.apache.kafka.common.acl.AclBinding; +import org.apache.kafka.common.acl.AclBindingFilter; +import org.apache.kafka.common.errors.ApiException; +import org.apache.kafka.common.errors.UnknownServerException; +import org.apache.kafka.common.requests.ApiError; +import org.apache.kafka.server.authorizer.AclCreateResult; +import org.apache.kafka.server.authorizer.AclDeleteResult; +import org.apache.kafka.server.authorizer.AuthorizableRequestContext; +import org.apache.kafka.server.authorizer.Authorizer; + +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionStage; + + +/** + * An interface for Authorizers which store state in the __cluster_metadata log. + * + * These methods must all be thread-safe. + */ +public interface ClusterMetadataAuthorizer extends Authorizer { + /** + * Set the mutator object which should be used for creating and deleting ACLs. + */ + void setAclMutator(AclMutator aclMutator); + + /** + * Get the mutator object which should be used for creating and deleting ACLs. + * + * @throws org.apache.kafka.common.errors.NotControllerException + * If the aclMutator was not set. + */ + AclMutator aclMutatorOrException(); + + /** + * Load the ACLs in the given map. Anything not in the map will be removed. + * The authorizer will also wait for this initial snapshot load to complete when + * coming up. + */ + void loadSnapshot(Map<Uuid, StandardAcl> acls); + + /** + * Add a new ACL. Any ACL with the same ID will be replaced. + */ + void addAcl(Uuid id, StandardAcl acl); + + /** + * Remove the ACL with the given ID. + */ + void removeAcl(Uuid id); + + default List<? extends CompletionStage<AclCreateResult>> createAcls( + AuthorizableRequestContext requestContext, + List<AclBinding> aclBindings) { + List<CompletableFuture<AclCreateResult>> futures = new ArrayList<>(aclBindings.size()); + AclMutator aclMutator = aclMutatorOrException(); + aclBindings.forEach(b -> futures.add(new CompletableFuture<>())); + aclMutator.createAcls(aclBindings).whenComplete((results, throwable) -> { + if (throwable == null && results.size() != futures.size()) { Review comment: Hmm, checking `throwable` seems clearer to me, although I don't feel strongly about it. This is one case where a sum type would have really helped clarity, I guess. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
