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.Collection;
  33 import java.util.Properties;
  34
  35 import javax.persistence.Persistence;
  36
  37 import org.onap.policy.pdp.xacml.application.common.ToscaDictionary;
  38 import org.onap.policy.pdp.xacml.application.common.std.StdOnapPip;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42
  43 public class GetOperationOutcomePip extends StdOnapPip {
  44     public static final String ISSUER_NAME = "get-operation-outcome";
  45     private static Logger logger = LoggerFactory.getLogger(GetOperationOutcomePip.class);
  46
  47     public GetOperationOutcomePip() {
  48         super();
  49     }
  50
  51     @Override
  52     public Collection<PIPRequest> attributesRequired() {
  53         return Arrays.asList(PIP_REQUEST_TARGET);
  54     }
  55
  56     @Override
  57     public void configure(String id, Properties properties) throws PIPException {
  58         super.configure(id, properties);
  59         //
  60         // Create our entity manager
  61         //
  62         em = null;
  63         try {
  64             //
  65             // In case there are any overloaded properties for the JPA
  66             //
  67             Properties emProperties = new Properties();
  68             emProperties.putAll(properties);
  69             //
  70             // Create the entity manager factory
  71             //
  72             em = Persistence.createEntityManagerFactory(
  73                     properties.getProperty(ISSUER_NAME + ".persistenceunit"),
  74                     emProperties).createEntityManager();
  75         } catch (Exception e) {
  76             logger.error("Persistence failed {} operations history db {}", e.getLocalizedMessage(), e);
  77         }
  78     }
  79
  80     /**
  81      * getAttributes.
  82      *
  83      * @param pipRequest the request
  84      * @param pipFinder the pip finder
  85      * @return PIPResponse
  86      */
  87     @Override
  88     public PIPResponse getAttributes(PIPRequest pipRequest, PIPFinder pipFinder) throws PIPException {
  89         logger.debug("getAttributes requesting attribute {} of type {} for issuer {}",
  90                 pipRequest.getAttributeId(), pipRequest.getDataTypeId(), pipRequest.getIssuer());
  91         //
  92         // Determine if the issuer is correct
  93         //
  94         if (Strings.isNullOrEmpty(pipRequest.getIssuer())) {
  95             logger.debug("issuer is null - returning empty response");
  96             //
  97             // We only respond to ourself as the issuer
  98             //
  99             return StdPIPResponse.PIP_RESPONSE_EMPTY;
 100         }
 101         if (! pipRequest.getIssuer().startsWith(ToscaDictionary.GUARD_ISSUER_PREFIX)) {
 102             logger.debug("Issuer does not start with guard");
 103             //
 104             // We only respond to ourself as the issuer
 105             //
 106             return StdPIPResponse.PIP_RESPONSE_EMPTY;
 107         }
 108         //
 109         // Parse out the issuer which denotes the time window
 110         // Eg: any-prefix:clname:some-controlloop-name
 111         //
 112         String[] s1 = pipRequest.getIssuer().split("clname:");
 113         String clname = s1[1];
 114         String target = null;
 115         target = getAttribute(pipFinder, PIP_REQUEST_TARGET);
 116
 117         logger.debug("Going to query DB about: clname={}, target={}", clname, target);
 118         String outcome = doDatabaseQuery(clname, target);
 119         logger.debug("Query result is: {}", outcome);
 120
 121         StdMutablePIPResponse pipResponse = new StdMutablePIPResponse();
 122         this.addStringAttribute(pipResponse,
 123                 XACML3.ID_ATTRIBUTE_CATEGORY_RESOURCE,
 124                 ToscaDictionary.ID_RESOURCE_GUARD_OPERATIONOUTCOME,
 125                 outcome,
 126                 pipRequest);
 127         return new StdPIPResponse(pipResponse);
 128     }
 129
 130     private String doDatabaseQuery(String clname, String target) {
 131         logger.info("Querying operations history for {} {}", clname, target);
 132         //
 133         // Only can query if we have an EntityManager
 134         //
 135         if (em == null) {
 136             logger.error("No EntityManager available");
 137             return null;
 138         }
 139         //
 140         // Do the query
 141         //
 142         try {
 143             //
 144             // We are expecting a single result
 145             //
 146             return em.createQuery("select e.outcome from Dbao e"
 147                                   + " where e.closedLoopName= ?1"
 148                                   + " and e.target= ?2"
 149                                   + " order by e.endtime desc",
 150                                   String.class)
 151                 .setParameter(1, clname)
 152                 .setParameter(2, target)
 153                 .setMaxResults(1)
 154                 .getSingleResult();
 155         } catch (Exception e) {
 156             logger.error("Typed query failed ", e);
 157             return null;
 158         }
 159     }
 160 }