ONAP-PAP-REST/src/main/java/org/onap/policy/pap/xacml/rest/controller/PushPolicyController.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP-PAP-REST
   4  * ================================================================================
   5  * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.pap.xacml.rest.controller;
  22
  23 import com.att.research.xacml.api.pap.PAPException;
  24 import com.fasterxml.jackson.databind.DeserializationFeature;
  25 import com.fasterxml.jackson.databind.JsonNode;
  26 import com.fasterxml.jackson.databind.ObjectMapper;
  27 import java.io.BufferedWriter;
  28 import java.io.File;
  29 import java.io.FileWriter;
  30 import java.io.IOException;
  31 import java.io.ObjectOutputStream;
  32 import java.net.URI;
  33 import java.util.List;
  34 import java.util.UUID;
  35 import javax.script.SimpleBindings;
  36 import javax.servlet.http.HttpServletRequest;
  37 import javax.servlet.http.HttpServletResponse;
  38 import org.onap.policy.common.logging.eelf.MessageCodes;
  39 import org.onap.policy.common.logging.eelf.PolicyLogger;
  40 import org.onap.policy.common.logging.flexlogger.FlexLogger;
  41 import org.onap.policy.common.logging.flexlogger.Logger;
  42 import org.onap.policy.pap.xacml.rest.XACMLPapServlet;
  43 import org.onap.policy.rest.dao.CommonClassDao;
  44 import org.onap.policy.rest.jpa.PolicyEntity;
  45 import org.onap.policy.rest.jpa.PolicyVersion;
  46 import org.onap.policy.xacml.std.pap.StdPDPGroup;
  47 import org.onap.policy.xacml.std.pap.StdPDPPolicy;
  48 import org.springframework.beans.factory.annotation.Autowired;
  49 import org.springframework.stereotype.Controller;
  50 import org.springframework.web.bind.annotation.RequestMapping;
  51 import org.springframework.web.bind.annotation.RequestMethod;
  52
  53 @Controller
  54 public class PushPolicyController {
  55     private static final Logger LOGGER = FlexLogger.getLogger(PushPolicyController.class);
  56
  57     private static CommonClassDao commonClassDao;
  58     private static String policyNames = "policyName";
  59     private static String errorMsg = "error";
  60     private static String operation = "operation";
  61     private static String messageContent = "message";
  62
  63     private static final String REGEX = "[0-9a-zA-Z._ ]*";
  64
  65     @Autowired
  66     public PushPolicyController(CommonClassDao commonClassDao) {
  67         PushPolicyController.commonClassDao = commonClassDao;
  68     }
  69
  70     public void setCommonClassDao(CommonClassDao commonClassDao) {
  71         PushPolicyController.commonClassDao = commonClassDao;
  72     }
  73
  74     /*
  75      * This is an empty constructor
  76      */
  77     public PushPolicyController() {
  78     }
  79
  80     @RequestMapping(value = "/pushPolicy", method = RequestMethod.POST)
  81     public void pushPolicy(HttpServletRequest request, HttpServletResponse response) {
  82         ObjectMapper mapper = new ObjectMapper();
  83         mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
  84         try {
  85             JsonNode root = mapper.readTree(request.getInputStream());
  86             String policyScope = root.get("policyScope").asText();
  87             String filePrefix = root.get("filePrefix").asText();
  88             String policyName = root.get(policyNames).asText();
  89             String pdpGroup = root.get("pdpGroup").asText();
  90             String requestID = request.getHeader("X-ECOMP-RequestID");
  91             if (requestID == null) {
  92                 requestID = UUID.randomUUID().toString();
  93                 LOGGER.info("No request ID provided, sending generated ID: " + requestID);
  94             }
  95             LOGGER.info("Push policy Request to get the selectedPolicy : " + root.asText());
  96             String policyVersionName = policyScope.replace(".", File.separator) + File.separator
  97                     + filePrefix + policyName;
  98             List<?> policyVersionObject =
  99                     commonClassDao.getDataById(PolicyVersion.class, policyNames, policyVersionName);
 100             if (policyVersionObject != null) {
 101                 PolicyVersion policyVersion = (PolicyVersion) policyVersionObject.get(0);
 102                 String policyID = policyVersionName.replace(File.separator, "."); // This is before adding version.
 103                 policyVersionName += "." + policyVersion.getActiveVersion() + ".xml";
 104                 addPolicyToGroup(policyScope, policyID, policyVersionName.replace(File.separator, "."), pdpGroup,
 105                         response);
 106             } else {
 107                 String message = "Unknown Policy '" + policyName + "'";
 108                 PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
 109                 response.addHeader(errorMsg, "unknownPolicy");
 110                 response.addHeader(operation, "push");
 111                 response.addHeader(messageContent, message);
 112                 response.setStatus(HttpServletResponse.SC_NOT_FOUND);
 113             }
 114         } catch (NullPointerException | IOException e) {
 115             LOGGER.error(e);
 116             response.setStatus(HttpServletResponse.SC_NOT_FOUND);
 117             response.addHeader(errorMsg, "unknown");
 118             response.addHeader(operation, "push");
 119         }
 120     }
 121
 122     private void addPolicyToGroup(String policyScope, String policyID, String policyName, String pdpGroup,
 123                                   HttpServletResponse response) {
 124         StdPDPGroup selectedPDPGroup = null;
 125         StdPDPPolicy selectedPolicy = null;
 126         //Get the selected PDP Group to push the policy
 127         try {
 128             selectedPDPGroup = (StdPDPGroup) XACMLPapServlet.getPAPEngine().getGroup(pdpGroup);
 129         } catch (PAPException e1) {
 130             PolicyLogger.error(e1);
 131         }
 132         if (selectedPDPGroup == null) {
 133             String message = "Unknown groupId '" + selectedPDPGroup + "'";
 134             if (!message.matches(REGEX)) {
 135                 message = "Unknown groupId";
 136             }
 137             PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
 138             response.addHeader(errorMsg, "unknownGroupId");
 139             response.addHeader(operation, "push");
 140             response.addHeader(messageContent, message);
 141             response.setStatus(HttpServletResponse.SC_NOT_FOUND);
 142             return;
 143         }
 144         // Get PolicyEntity from DB;
 145         String createPolicyQuery = "SELECT p FROM PolicyEntity p WHERE p.scope=:scope AND p.policyName=:policyName";
 146         SimpleBindings params = new SimpleBindings();
 147         params.put("scope", policyScope);
 148         params.put(policyNames, policyName.substring(policyScope.length() + 1));
 149         List<?> createPolicyQueryList = commonClassDao.getDataByQuery(createPolicyQuery, params);
 150         LOGGER.info("addPolicyToGroup:Total execution time to retrieve " + policyNames
 151                 + " from PolicyEntity");
 152
 153         PolicyEntity policyEntity = null;
 154         if (!createPolicyQueryList.isEmpty()) {
 155             policyEntity = (PolicyEntity) createPolicyQueryList.get(0);
 156         } else {
 157             PolicyLogger
 158                     .error("Somehow, more than one policy with the same scope, name, and deleted status were found in" +
 159                             " the database");
 160             String message = "Unknown Policy '" + policyName + "'";
 161             PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE + " " + message);
 162             response.addHeader(errorMsg, "unknownPolicy");
 163             response.addHeader(operation, "push");
 164             response.addHeader(messageContent, message);
 165             response.setStatus(HttpServletResponse.SC_NOT_FOUND);
 166             return;
 167         }
 168         File temp = new File(policyName);
 169         try (BufferedWriter bw = new BufferedWriter(new FileWriter(temp))) {
 170             bw.write(policyEntity.getPolicyData());
 171             URI selectedURI = temp.toURI();
 172             // Create the policy Object
 173             selectedPolicy = new StdPDPPolicy(policyName, true, policyID, selectedURI);
 174         } catch (IOException e) {
 175             LOGGER.error("Unable to get policy '" + policyName + "': " + e.getMessage(), e);
 176         }
 177         try {
 178             new ObjectOutputStream(response.getOutputStream()).writeObject(selectedPolicy);
 179         } catch (IOException e) {
 180             LOGGER.error(e);
 181             response.addHeader(errorMsg, "policyCopyError");
 182             response.addHeader(messageContent, e.getMessage());
 183             response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 184             return;
 185         }
 186         response.addHeader("Content-Type", "application/json");
 187         response.setStatus(HttpServletResponse.SC_ACCEPTED);
 188         response.addHeader(operation, "push");
 189         response.addHeader("policyId", policyName);
 190         // TODO : Check point to push policies within PAP.
 191     }
 192 }