frankgh commented on code in PR #270: URL: https://github.com/apache/cassandra-sidecar/pull/270#discussion_r2450035571
########## server/src/main/java/org/apache/cassandra/sidecar/acl/authorization/CachedAuthorizationHandler.java: ########## @@ -0,0 +1,201 @@ +/* + * 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.cassandra.sidecar.acl.authorization; + +import java.util.List; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.function.BiConsumer; + +import com.google.common.annotations.VisibleForTesting; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.github.benmanes.caffeine.cache.AsyncCache; +import io.vertx.ext.auth.User; +import io.vertx.ext.auth.authorization.Authorization; +import io.vertx.ext.auth.authorization.AuthorizationContext; +import io.vertx.ext.web.RoutingContext; +import io.vertx.ext.web.handler.AuthorizationHandler; +import io.vertx.ext.web.handler.HttpException; +import io.vertx.ext.web.handler.impl.AuthorizationHandlerImpl; +import org.apache.cassandra.sidecar.acl.AdminIdentityResolver; +import org.apache.cassandra.sidecar.config.AccessControlConfiguration; +import org.apache.cassandra.sidecar.metrics.SidecarMetrics; +import org.apache.cassandra.sidecar.metrics.server.AuthMetrics; + +import static io.netty.handler.codec.http.HttpResponseStatus.FORBIDDEN; +import static org.apache.cassandra.sidecar.utils.AuthUtils.extractIdentities; + +/** + * {@link CachedAuthorizationHandler} caches all authorization requests using {@link AuthorizationCacheKey}. + */ +public class CachedAuthorizationHandler extends AuthorizationHandlerImpl +{ + private static final Logger LOGGER = LoggerFactory.getLogger(CachedAuthorizationHandler.class); + + // uniquely identities CachedAuthorizationHandler across different routes. Having same handlerId can lead + // to permission bypass across routes. + private static final AtomicInteger HANDLER_ID_GEN = new AtomicInteger(0); + private static final HttpException FORBIDDEN_EXCEPTION = new HttpException(403); + private final int handlerId; + private final AccessControlConfiguration accessControlConfiguration; + private final AuthorizationParameterValidateHandler authZParameterValidateHandler; + private final AdminIdentityResolver adminIdentityResolver; + private final AuthMetrics authMetrics; + private final AsyncCache<AuthorizationCacheKey, Boolean> authorizationCache; + + // This is overridden since Vert.x does not expose this + private BiConsumer<RoutingContext, AuthorizationContext> variableHandler; + + public CachedAuthorizationHandler(AccessControlConfiguration accessControlConfiguration, + AuthorizationParameterValidateHandler authZParameterValidateHandler, + AdminIdentityResolver adminIdentityResolver, + Authorization authorization, + SidecarMetrics sidecarMetrics, + AsyncCache<AuthorizationCacheKey, Boolean> authorizationCache) + { + this(HANDLER_ID_GEN.getAndIncrement(), accessControlConfiguration, authZParameterValidateHandler, + adminIdentityResolver, authorization, sidecarMetrics, authorizationCache); + } + + @VisibleForTesting + public CachedAuthorizationHandler(int handlerId, + AccessControlConfiguration accessControlConfiguration, + AuthorizationParameterValidateHandler authZParameterValidateHandler, + AdminIdentityResolver adminIdentityResolver, + Authorization authorization, + SidecarMetrics sidecarMetrics, + AsyncCache<AuthorizationCacheKey, Boolean> authorizationCache) + { + super(authorization); + this.handlerId = handlerId; + this.accessControlConfiguration = accessControlConfiguration; + this.authZParameterValidateHandler = authZParameterValidateHandler; + this.adminIdentityResolver = adminIdentityResolver; + this.authMetrics = sidecarMetrics.server().auth(); + this.authorizationCache = authorizationCache; + } + + @Override + public void handle(RoutingContext ctx) + { + long startTimeNanos = System.nanoTime(); + authZParameterValidateHandler.handle(ctx); + if (ctx.failed()) // failed due to validation + { + return; + } + + User user = ctx.user(); + AuthorizationContext authorizationContext = AuthorizationContext.create(user); + if (this.variableHandler != null) + { + this.variableHandler.accept(ctx, authorizationContext); + } + + AtomicBoolean ctxNextCalled = new AtomicBoolean(false); + AuthorizationCacheKey key = AuthorizationCacheKey.create(handlerId, authorizationContext); + CompletableFuture<Boolean> authorizationFuture = checkAuthorization(key, ctx, ctxNextCalled, startTimeNanos); Review Comment: the reason for the client to use CompletableFuture is because the core project client project does not have any vertx dependencies -- This is an automated message from the Apache Git Service. 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