sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/GetResourceNodeExecutor.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * openECOMP : SDN-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights
   6  *                                              reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.openecomp.sdnc.sli.provider;
  23
  24 import org.openecomp.sdnc.sli.SvcLogicContext;
  25 import org.openecomp.sdnc.sli.SvcLogicException;
  26 import org.openecomp.sdnc.sli.SvcLogicExpression;
  27 import org.openecomp.sdnc.sli.SvcLogicNode;
  28 import org.openecomp.sdnc.sli.SvcLogicResource;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 public class GetResourceNodeExecutor extends SvcLogicNodeExecutor {
  33
  34         private static final Logger LOG = LoggerFactory
  35                         .getLogger(GetResourceNodeExecutor.class);
  36
  37         public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node,
  38                         SvcLogicContext ctx) throws SvcLogicException {
  39
  40                 String plugin = SvcLogicExpressionResolver.evaluate(
  41                                 node.getAttribute("plugin"), node, ctx);
  42                 String resourceType = SvcLogicExpressionResolver.evaluate(
  43                                 node.getAttribute("resource"), node, ctx);
  44                 String key = SvcLogicExpressionResolver.evaluateAsKey(
  45                                 node.getAttribute("key"), node, ctx);
  46                 String pfx = SvcLogicExpressionResolver.evaluate(
  47                                 node.getAttribute("pfx"), node, ctx);
  48
  49                 String localOnlyStr = SvcLogicExpressionResolver.evaluate(
  50                                 node.getAttribute("local-only"), node, ctx);
  51
  52                 // Note: for get-resource, only refresh from A&AI if the DG explicitly set
  53                 // local-only to false.  Otherwise, just read from local database.
  54                 boolean localOnly = true;
  55
  56                 if ("false".equalsIgnoreCase(localOnlyStr)) {
  57                         localOnly = false;
  58                 }
  59
  60                 SvcLogicExpression selectExpr = node.getAttribute("select");
  61                 String select = null;
  62
  63                 if (selectExpr != null) {
  64                         select = SvcLogicExpressionResolver.evaluateAsKey(selectExpr, node,
  65                                         ctx);
  66                 }
  67
  68                 SvcLogicExpression orderByExpr = node.getAttribute("order-by");
  69                 String orderBy = null;
  70
  71                 if (orderByExpr != null) {
  72                         orderBy = SvcLogicExpressionResolver.evaluateAsKey(orderByExpr, node,
  73                                         ctx);
  74                 }
  75
  76                 String outValue = "failure";
  77
  78                 if (LOG.isDebugEnabled()) {
  79                         LOG.debug(node.getNodeType()
  80                                         + " node encountered - looking for resource class "
  81                                         + plugin);
  82                 }
  83
  84
  85                         SvcLogicResource resourcePlugin = getSvcLogicResource(plugin);
  86
  87                         if (resourcePlugin != null) {
  88
  89                                 try {
  90                                         switch (resourcePlugin.query(resourceType, localOnly, select, key,
  91                                                         pfx, orderBy, ctx)) {
  92                                         case SUCCESS:
  93                                                 outValue = "success";
  94                                                 break;
  95                                         case NOT_FOUND:
  96                                                 outValue = "not-found";
  97                                                 break;
  98                                         case FAILURE:
  99                                         default:
 100                                                 outValue = "failure";
 101                                         }
 102                                 } catch (SvcLogicException e) {
 103                                         LOG.error("Caught exception from resource plugin", e);
 104                                         outValue = "failure";
 105                                 }
 106                         } else {
 107                                 LOG.warn("Could not find SvcLogicResource object for plugin "
 108                                                 + plugin);
 109                         }
 110
 111
 112                 SvcLogicNode nextNode = node.getOutcomeValue(outValue);
 113                 if (nextNode != null) {
 114                         if (LOG.isDebugEnabled()) {
 115                                 LOG.debug("about to execute " + outValue + " branch");
 116                         }
 117                         return (nextNode);
 118                 }
 119
 120                 nextNode = node.getOutcomeValue("Other");
 121                 if (nextNode != null) {
 122                         if (LOG.isDebugEnabled()) {
 123                                 LOG.debug("about to execute Other branch");
 124                         }
 125                 } else {
 126                         if (LOG.isDebugEnabled()) {
 127
 128                                 LOG.debug("no "+outValue+" or Other branch found");
 129                         }
 130                 }
 131                 return (nextNode);
 132         }
 133
 134 }