applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/operationshistory/GetOperationOutcomePip.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  * ============LICENSE_END=========================================================
  17  */
  18
  19
  20 package org.onap.policy.pdp.xacml.application.common.operationshistory;
  21
  22 import com.att.research.xacml.api.XACML3;
  23 import com.att.research.xacml.api.pip.PIPException;
  24 import com.att.research.xacml.api.pip.PIPFinder;
  25 import com.att.research.xacml.api.pip.PIPRequest;
  26 import com.att.research.xacml.api.pip.PIPResponse;
  27 import com.att.research.xacml.std.pip.StdMutablePIPResponse;
  28 import com.att.research.xacml.std.pip.StdPIPResponse;
  29 import com.google.common.base.Strings;
  30
  31 import java.util.Arrays;
  32 import java.util.Base64;
  33 import java.util.Collection;
  34 import java.util.Properties;
  35
  36 import javax.persistence.Persistence;
  37
  38 import org.onap.policy.pdp.xacml.application.common.ToscaDictionary;
  39 import org.onap.policy.pdp.xacml.application.common.std.StdOnapPip;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43
  44 public class GetOperationOutcomePip extends StdOnapPip {
  45     public static final String ISSUER_NAME = "get-operation-outcome";
  46     private static Logger logger = LoggerFactory.getLogger(GetOperationOutcomePip.class);
  47
  48     public GetOperationOutcomePip() {
  49         super();
  50     }
  51
  52     @Override
  53     public Collection<PIPRequest> attributesRequired() {
  54         return Arrays.asList(PIP_REQUEST_TARGET);
  55     }
  56
  57     @Override
  58     public void configure(String id, Properties properties) throws PIPException {
  59         super.configure(id, properties);
  60         //
  61         // Create our entity manager
  62         //
  63         em = null;
  64         try {
  65             //
  66             // In case there are any overloaded properties for the JPA
  67             //
  68             Properties emProperties = new Properties();
  69             emProperties.putAll(properties);
  70
  71             //
  72             // Need to decode the password before creating the EntityManager
  73             //
  74             String decodedPassword = new String(Base64.getDecoder()
  75                     .decode(emProperties.getProperty("javax.persistence.jdbc.password")));
  76             emProperties.setProperty("javax.persistence.jdbc.password", decodedPassword);
  77
  78             //
  79             // Create the entity manager factory
  80             //
  81             em = Persistence.createEntityManagerFactory(
  82                     properties.getProperty(ISSUER_NAME + ".persistenceunit"),
  83                     emProperties).createEntityManager();
  84         } catch (Exception e) {
  85             logger.error("Persistence failed {} operations history db {}", e.getLocalizedMessage(), e);
  86         }
  87     }
  88
  89     /**
  90      * getAttributes.
  91      *
  92      * @param pipRequest the request
  93      * @param pipFinder the pip finder
  94      * @return PIPResponse
  95      */
  96     @Override
  97     public PIPResponse getAttributes(PIPRequest pipRequest, PIPFinder pipFinder) throws PIPException {
  98         logger.debug("getAttributes requesting attribute {} of type {} for issuer {}",
  99                 pipRequest.getAttributeId(), pipRequest.getDataTypeId(), pipRequest.getIssuer());
 100         //
 101         // Determine if the issuer is correct
 102         //
 103         if (Strings.isNullOrEmpty(pipRequest.getIssuer())) {
 104             logger.debug("issuer is null - returning empty response");
 105             //
 106             // We only respond to ourself as the issuer
 107             //
 108             return StdPIPResponse.PIP_RESPONSE_EMPTY;
 109         }
 110         if (! pipRequest.getIssuer().startsWith(ToscaDictionary.GUARD_ISSUER_PREFIX)) {
 111             logger.debug("Issuer does not start with guard");
 112             //
 113             // We only respond to ourself as the issuer
 114             //
 115             return StdPIPResponse.PIP_RESPONSE_EMPTY;
 116         }
 117         //
 118         // Parse out the issuer which denotes the time window
 119         // Eg: any-prefix:clname:some-controlloop-name
 120         //
 121         String[] s1 = pipRequest.getIssuer().split("clname:");
 122         String clname = s1[1];
 123         String target = null;
 124         target = getAttribute(pipFinder, PIP_REQUEST_TARGET);
 125
 126         logger.debug("Going to query DB about: clname={}, target={}", clname, target);
 127         String outcome = doDatabaseQuery(clname, target);
 128         logger.debug("Query result is: {}", outcome);
 129
 130         StdMutablePIPResponse pipResponse = new StdMutablePIPResponse();
 131         this.addStringAttribute(pipResponse,
 132                 XACML3.ID_ATTRIBUTE_CATEGORY_RESOURCE,
 133                 ToscaDictionary.ID_RESOURCE_GUARD_OPERATIONOUTCOME,
 134                 outcome,
 135                 pipRequest);
 136         return new StdPIPResponse(pipResponse);
 137     }
 138
 139     private String doDatabaseQuery(String clname, String target) {
 140         logger.info("Querying operations history for {} {}", clname, target);
 141         //
 142         // Only can query if we have an EntityManager
 143         //
 144         if (em == null) {
 145             logger.error("No EntityManager available");
 146             return null;
 147         }
 148         //
 149         // Do the query
 150         //
 151         try {
 152             //
 153             // We are expecting a single result
 154             //
 155             return em.createQuery("select e.outcome from Dbao e"
 156                                   + " where e.closedLoopName= ?1"
 157                                   + " and e.target= ?2"
 158                                   + " order by e.endtime desc",
 159                                   String.class)
 160                 .setParameter(1, clname)
 161                 .setParameter(2, target)
 162                 .setMaxResults(1)
 163                 .getSingleResult();
 164         } catch (Exception e) {
 165             logger.error("Typed query failed ", e);
 166             return null;
 167         }
 168     }
 169 }