jerryshao commented on code in PR #7842: URL: https://github.com/apache/gravitino/pull/7842#discussion_r2265932957
########## server/src/main/java/org/apache/gravitino/server/web/rest/MetadataObjectPolicyOperations.java: ########## @@ -0,0 +1,357 @@ +/* + * 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.gravitino.server.web.rest; + +import com.codahale.metrics.annotation.ResponseMetered; +import com.codahale.metrics.annotation.Timed; +import java.util.Arrays; +import java.util.HashSet; +import java.util.Locale; +import java.util.Optional; +import java.util.Set; +import javax.inject.Inject; +import javax.servlet.http.HttpServletRequest; +import javax.ws.rs.DefaultValue; +import javax.ws.rs.GET; +import javax.ws.rs.POST; +import javax.ws.rs.Path; +import javax.ws.rs.PathParam; +import javax.ws.rs.Produces; +import javax.ws.rs.QueryParam; +import javax.ws.rs.core.Context; +import javax.ws.rs.core.Response; +import org.apache.commons.lang3.ArrayUtils; +import org.apache.gravitino.MetadataObject; +import org.apache.gravitino.MetadataObjects; +import org.apache.gravitino.dto.policy.PolicyDTO; +import org.apache.gravitino.dto.requests.PoliciesAssociateRequest; +import org.apache.gravitino.dto.responses.NameListResponse; +import org.apache.gravitino.dto.responses.PolicyListResponse; +import org.apache.gravitino.dto.responses.PolicyResponse; +import org.apache.gravitino.dto.util.DTOConverters; +import org.apache.gravitino.exceptions.NoSuchPolicyException; +import org.apache.gravitino.metrics.MetricNames; +import org.apache.gravitino.policy.Policy; +import org.apache.gravitino.policy.PolicyDispatcher; +import org.apache.gravitino.server.web.Utils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +@Path("/metalakes/{metalake}/objects/{type}/{fullName}/policies") +public class MetadataObjectPolicyOperations { + private static final Logger LOG = LoggerFactory.getLogger(MetadataObjectPolicyOperations.class); + + private final PolicyDispatcher policyDispatcher; + + @Context private HttpServletRequest httpRequest; + + @Inject + public MetadataObjectPolicyOperations(PolicyDispatcher policyDispatcher) { + this.policyDispatcher = policyDispatcher; + } + + @GET + @Path("{policy}") + @Produces("application/vnd.gravitino.v1+json") + @Timed(name = "get-object-policy." + MetricNames.HTTP_PROCESS_DURATION, absolute = true) + @ResponseMetered(name = "get-object-policy", absolute = true) + public Response getPolicyForObject( + @PathParam("metalake") String metalake, + @PathParam("type") String type, + @PathParam("fullName") String fullName, + @PathParam("policy") String policyName) { + LOG.info( + "Received get policy {} request for object type: {}, full name: {} under metalake: {}", + policyName, + type, + fullName, + metalake); + + try { + return Utils.doAs( + httpRequest, + () -> { + MetadataObject object = + MetadataObjects.parse( + fullName, MetadataObject.Type.valueOf(type.toUpperCase(Locale.ROOT))); + Optional<Policy> policy = getPolicyForObject(metalake, object, policyName); + + if (policy.isPresent()) { + LOG.info( + "Get policy: {} for object type: {}, full name: {} under metalake: {}", + policyName, + type, + fullName, + metalake); + return Utils.ok( + new PolicyResponse(DTOConverters.toDTO(policy.get(), Optional.of(false)))); + } + + // ensure the policy exists and is inheritable + Policy targetPolicy = policyDispatcher.getPolicy(metalake, policyName); + if (!targetPolicy.inheritable() + || !targetPolicy.supportedObjectTypes().contains(object.type())) { + return getPolicyNotFoundResponse(metalake, policyName, type, fullName); + } + + if (hasConflictExclusivePolicy(metalake, object, targetPolicy)) { + return getPolicyNotFoundResponse(metalake, policyName, type, fullName); + } + + MetadataObject parentObject = MetadataObjects.parent(object); + while (parentObject != null) { + if (!targetPolicy.supportedObjectTypes().contains(parentObject.type())) { + // If the parent object type is not supported by the target policy, we skip it. + parentObject = MetadataObjects.parent(parentObject); + continue; + } + + Policy[] parentPolicies = + policyDispatcher.listPolicyInfosForMetadataObject(metalake, parentObject); + if (hasConflictExclusivePolicy(parentPolicies, targetPolicy)) { + // If another same type exclusive policy is found, it means the target policy will + // be replaced by the same type policy + return getPolicyNotFoundResponse(metalake, policyName, type, fullName); + } + + Optional<Policy> inheritedPolicy = + ArrayUtils.isEmpty(parentPolicies) + ? Optional.empty() + : Arrays.stream(parentPolicies) + .filter(p -> p.name().equals(policyName)) + .findFirst(); + if (inheritedPolicy.isPresent()) { + // If the policy is found in parent object, we convert it to DTO and return. + LOG.info( + "Found policy: {} for object type: {}, full name: {} under metalake: {}", + policyName, + type, + fullName, + metalake); + return Utils.ok( + new PolicyResponse( + DTOConverters.toDTO(inheritedPolicy.get(), Optional.of(true)))); + } + + parentObject = MetadataObjects.parent(parentObject); + } + + return getPolicyNotFoundResponse(metalake, policyName, type, fullName); + }); + + } catch (Exception e) { + return ExceptionHandlers.handlePolicyException(OperationType.GET, policyName, fullName, e); + } + } + + @GET + @Produces("application/vnd.gravitino.v1+json") + @Timed(name = "list-object-policies." + MetricNames.HTTP_PROCESS_DURATION, absolute = true) + @ResponseMetered(name = "list-object-policies", absolute = true) + public Response listPoliciesForMetadataObject( + @PathParam("metalake") String metalake, + @PathParam("type") String type, + @PathParam("fullName") String fullName, + @QueryParam("details") @DefaultValue("false") boolean verbose) { + LOG.info( + "Received list policy {} request for object type: {}, full name: {} under metalake: {}", + verbose ? "infos" : "names", + type, + fullName, + metalake); + + try { + return Utils.doAs( + httpRequest, + () -> { + MetadataObject object = + MetadataObjects.parse( + fullName, MetadataObject.Type.valueOf(type.toUpperCase(Locale.ROOT))); + + Set<PolicyDTO> policies = new HashSet<>(); + Set<String> exclusivePolicyTypes = new HashSet<>(); + Policy[] nonInheritedPolicies = + policyDispatcher.listPolicyInfosForMetadataObject(metalake, object); + for (Policy policy : nonInheritedPolicies) { + if (policy.exclusive()) { + exclusivePolicyTypes.add(policy.policyType()); + } + policies.add(DTOConverters.toDTO(policy, Optional.of(false))); + } + + MetadataObject parentObject = MetadataObjects.parent(object); + while (parentObject != null) { + Policy[] inheritedPolicies = + policyDispatcher.listPolicyInfosForMetadataObject(metalake, parentObject); + for (Policy policy : inheritedPolicies) { + if (!policy.supportedObjectTypes().contains(object.type()) + || !policy.inheritable()) { + // If the policy is not inheritable or does not support the object type, + // we skip it. + continue; + } + if (policy.exclusive()) { + if (exclusivePolicyTypes.contains(policy.policyType())) { + // If the policy is exclusive and already exists in the child object, we skip + // it. + continue; + } + exclusivePolicyTypes.add(policy.policyType()); + } + policies.add(DTOConverters.toDTO(policy, Optional.of(true))); + } + parentObject = MetadataObjects.parent(parentObject); + } + + if (verbose) { + LOG.info( + "List {} policies info for object type: {}, full name: {} under metalake: {}", + policies.size(), + type, + fullName, + metalake); + return Utils.ok(new PolicyListResponse(policies.toArray(new PolicyDTO[0]))); + + } else { + String[] policyNames = policies.stream().map(PolicyDTO::name).toArray(String[]::new); + + LOG.info( + "List {} policies for object type: {}, full name: {} under metalake: {}", + policyNames.length, + type, + fullName, + metalake); + return Utils.ok(new NameListResponse(policyNames)); + } + }); + + } catch (Exception e) { + return ExceptionHandlers.handlePolicyException(OperationType.LIST, "", fullName, e); + } + } + + @POST + @Produces("application/vnd.gravitino.v1+json") + @Timed(name = "associate-object-policies." + MetricNames.HTTP_PROCESS_DURATION, absolute = true) + @ResponseMetered(name = "associate-object-policies", absolute = true) + public Response associatePoliciesForObject( + @PathParam("metalake") String metalake, + @PathParam("type") String type, + @PathParam("fullName") String fullName, + PoliciesAssociateRequest request) { + LOG.info( + "Received associate policies request for object type: {}, full name: {} under metalake: {}", + type, + fullName, + metalake); + + try { + return Utils.doAs( + httpRequest, + () -> { + request.validate(); + MetadataObject object = + MetadataObjects.parse( + fullName, MetadataObject.Type.valueOf(type.toUpperCase(Locale.ROOT))); + String[] policyNames = + policyDispatcher.associatePoliciesForMetadataObject( + metalake, object, request.getPoliciesToAdd(), request.getPoliciesToRemove()); + policyNames = policyNames == null ? new String[0] : policyNames; + + LOG.info( + "Associated policies: {} for object type: {}, full name: {} under metalake: {}", + Arrays.toString(policyNames), + type, + fullName, + metalake); + return Utils.ok(new NameListResponse(policyNames)); + }); + + } catch (Exception e) { + return ExceptionHandlers.handlePolicyException(OperationType.ASSOCIATE, "", fullName, e); + } + } + + private boolean hasConflictExclusivePolicy( + String metalake, MetadataObject object, Policy targetPolicy) { + if (!targetPolicy.exclusive()) { + return false; + } + + Policy[] policies = policyDispatcher.listPolicyInfosForMetadataObject(metalake, object); + return Arrays.stream(policies) + .anyMatch( + p -> + p.exclusive() + && p.policyType().equalsIgnoreCase(targetPolicy.policyType()) + && !p.name().equals(targetPolicy.name())); + } + + private boolean hasConflictExclusivePolicy(Policy[] policies, Policy targetPolicy) { + if (!targetPolicy.exclusive() || ArrayUtils.isEmpty(policies)) { + return false; + } + return Arrays.stream(policies) + .anyMatch( + p -> + p.exclusive() + && p.policyType().equalsIgnoreCase(targetPolicy.policyType()) + && !p.name().equals(targetPolicy.name())); + } Review Comment: What's the difference of these two methods? AFAIK, we can move the difference out of this method, so they can be combined as one. What's more, the logic here in this file to check the different status is too complicated, you should add more comments. Which also makes me think that this policy system is a bit hard to understand and explain, because there're too many properties. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
