main/src/main/java/org/onap/policy/pdpx/main/comm/XacmlPdpUpdatePublisher.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * Copyright (C) 2019-2022 AT&T Intellectual Property. All rights reserved.
   4  * Modifications Copyright (C) 2024 Nordix Foundation.
   5  * ================================================================================
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *      http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  * SPDX-License-Identifier: Apache-2.0
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.onap.policy.pdpx.main.comm;
  23
  24 import java.util.Collection;
  25 import java.util.Collections;
  26 import java.util.List;
  27 import java.util.Map;
  28 import java.util.Optional;
  29 import java.util.stream.Collectors;
  30 import lombok.AllArgsConstructor;
  31 import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
  32 import org.onap.policy.models.pdp.concepts.PdpStatus;
  33 import org.onap.policy.models.pdp.concepts.PdpUpdate;
  34 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
  35 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
  36 import org.onap.policy.pdp.xacml.application.common.XacmlApplicationException;
  37 import org.onap.policy.pdp.xacml.application.common.XacmlPolicyUtils;
  38 import org.onap.policy.pdpx.main.XacmlState;
  39 import org.onap.policy.pdpx.main.rest.XacmlPdpApplicationManager;
  40 import org.onap.policy.pdpx.main.rest.XacmlPdpStatisticsManager;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 @AllArgsConstructor
  45 public class XacmlPdpUpdatePublisher {
  46
  47     private static final Logger LOGGER = LoggerFactory.getLogger(XacmlPdpUpdatePublisher.class);
  48
  49     private final TopicSinkClient client;
  50     private final XacmlState state;
  51     private final XacmlPdpApplicationManager appManager;
  52
  53     /**
  54      * Handle the PDP Update message.
  55      *
  56      * @param message Incoming message
  57      */
  58     public synchronized void handlePdpUpdate(PdpUpdate message) {
  59
  60         // current data
  61         Map<ToscaConceptIdentifier, ToscaPolicy> deployedPolicies = policyToMap(appManager.getToscaPolicies().keySet());
  62
  63         // incoming data
  64         Map<ToscaConceptIdentifier, ToscaPolicy> toBeDeployedPolicies = policyToMap(message.getPoliciesToBeDeployed());
  65         List<ToscaConceptIdentifier> toBeUndeployedIds =
  66                         Optional.ofNullable(message.getPoliciesToBeUndeployed()).orElse(Collections.emptyList());
  67
  68         var stats = XacmlPdpStatisticsManager.getCurrent();
  69
  70         // Undeploy policies
  71         for (ToscaConceptIdentifier policyId: toBeUndeployedIds) {
  72             ToscaPolicy policy = deployedPolicies.get(policyId);
  73             if (policy == null) {
  74                 LOGGER.warn("attempt to undeploy policy that has not been previously deployed: {}", policyId);
  75                 stats.updateUndeployFailureCount();
  76             } else if (toBeDeployedPolicies.containsKey(policyId)) {
  77                 LOGGER.warn("not undeploying policy, as it also appears in the deployment list: {}", policyId);
  78                 stats.updateUndeployFailureCount();
  79             } else {
  80                 appManager.removeUndeployedPolicy(policy);
  81                 stats.updateUndeploySuccessCount();
  82             }
  83         }
  84
  85         var errorMessage = new StringBuilder();
  86         // Deploy a policy
  87         // if deployed policies do not contain the incoming policy load it
  88         for (ToscaPolicy policy : toBeDeployedPolicies.values()) {
  89             if (!deployedPolicies.containsKey(policy.getIdentifier())) {
  90                 try {
  91                     appManager.loadDeployedPolicy(policy);
  92                     stats.updateDeploySuccessCount();
  93                 } catch (XacmlApplicationException e) {
  94                     // Failed to load policy, return error(s) to PAP
  95                     LOGGER.error("Failed to load policy: {}", policy, e);
  96                     errorMessage.append("Failed to load policy: ").append(policy).append(": ").append(e.getMessage())
  97                         .append(XacmlPolicyUtils.LINE_SEPARATOR);
  98                     stats.updateDeployFailureCount();
  99                 }
 100             }
 101         }
 102
 103         // update the policy count statistic
 104         stats.setTotalPolicyCount(appManager.getPolicyCount());
 105
 106         PdpStatus status = state.updateInternalState(message, errorMessage.toString());
 107         LOGGER.debug("Returning current deployed policies: {} ", status.getPolicies());
 108
 109         sendPdpUpdate(status);
 110     }
 111
 112     private Map<ToscaConceptIdentifier, ToscaPolicy> policyToMap(Collection<ToscaPolicy> policies) {
 113         if (policies == null) {
 114             return Collections.emptyMap();
 115         }
 116
 117         return policies.stream().collect(Collectors.toMap(ToscaPolicy::getIdentifier, policy -> policy));
 118     }
 119
 120     private void sendPdpUpdate(PdpStatus status) {
 121         // Send PdpStatus Change to PAP
 122         if (!client.send(status)) {
 123             LOGGER.error("failed to send to topic sink {}", client.getTopic());
 124         }
 125     }
 126 }