sli/provider/src/main/java/org/onap/ccsdk/sli/core/sli/provider/ReserveNodeExecutor.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : CCSDK
   4  * ================================================================================
   5  * Copyright (C) 2017 ONAP
   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.ccsdk.sli.core.sli.provider;
  22
  23 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
  24 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
  25 import org.onap.ccsdk.sli.core.sli.SvcLogicExpression;
  26 import org.onap.ccsdk.sli.core.sli.SvcLogicNode;
  27 import org.onap.ccsdk.sli.core.sli.SvcLogicResource;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public class ReserveNodeExecutor extends SvcLogicNodeExecutor {
  32
  33         private static final Logger LOG = LoggerFactory
  34                         .getLogger(ReserveNodeExecutor.class);
  35
  36         @Override
  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(node.getAttribute("pfx"),node,ctx);
  47
  48
  49         SvcLogicExpression selectExpr = node.getAttribute("select");
  50         String select = null;
  51
  52         if (selectExpr != null)
  53         {
  54                 select = SvcLogicExpressionResolver.evaluateAsKey(selectExpr, node, ctx);
  55         }
  56
  57                 String outValue = "failure";
  58
  59                 if (LOG.isDebugEnabled()) {
  60                         LOG.debug("reserve node encountered - looking for resource class "
  61                                         + plugin);
  62                 }
  63
  64
  65
  66         SvcLogicResource resourcePlugin = getSvcLogicResource(plugin);
  67
  68                         if (resourcePlugin != null) {
  69
  70                                 try {
  71                                         switch (resourcePlugin.reserve(resourceType, select, key, pfx, ctx)) {
  72                                         case SUCCESS:
  73                                                 outValue = "success";
  74                                                 break;
  75                                         case NOT_FOUND:
  76                                                 outValue = "not-found";
  77                                                 break;
  78                                         case FAILURE:
  79                                         default:
  80                                                 outValue = "failure";
  81                                         }
  82                                 } catch (SvcLogicException e) {
  83                                         LOG.error("Caught exception from resource plugin", e);
  84                                         outValue = "failure";
  85                                 }
  86                         } else {
  87                                 LOG.warn("Could not find SvcLogicResource object for plugin "
  88                                                 + plugin);
  89                         }
  90
  91                 SvcLogicNode nextNode = node.getOutcomeValue(outValue);
  92                 if (nextNode != null) {
  93                         if (LOG.isDebugEnabled()) {
  94                                 LOG.debug("about to execute " + outValue + " branch");
  95                         }
  96                         return (nextNode);
  97                 }
  98
  99                 nextNode = node.getOutcomeValue("Other");
 100                 if (nextNode != null) {
 101                         if (LOG.isDebugEnabled()) {
 102                                 LOG.debug("about to execute Other branch");
 103                         }
 104                 } else {
 105                         if (LOG.isDebugEnabled()) {
 106
 107                                 LOG.debug("no "+outValue+" or Other branch found");
 108                         }
 109                 }
 110                 return (nextNode);
 111         }
 112
 113 }