sli/provider/src/main/java/org/onap/ccsdk/sli/core/sli/provider/IsAvailableNodeExecutor.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.SvcLogicNode;
  26 import org.onap.ccsdk.sli.core.sli.SvcLogicResource;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 public class IsAvailableNodeExecutor extends SvcLogicNodeExecutor {
  31
  32         private static final Logger LOG = LoggerFactory
  33                         .getLogger(IsAvailableNodeExecutor.class);
  34
  35         @Override
  36         public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node,
  37                         SvcLogicContext ctx) throws SvcLogicException {
  38
  39                 String plugin = SvcLogicExpressionResolver.evaluate(
  40                                 node.getAttribute("plugin"), node, ctx);
  41                 String resourceType = SvcLogicExpressionResolver.evaluate(
  42                                 node.getAttribute("resource"), node, ctx);
  43                 String key = SvcLogicExpressionResolver.evaluateAsKey(
  44                                 node.getAttribute("key"), node, ctx);
  45                 String pfx = SvcLogicExpressionResolver.evaluate(
  46                                 node.getAttribute("pfx"), node, ctx);
  47
  48                 String outValue = "failure";
  49
  50                 if (LOG.isDebugEnabled()) {
  51                         LOG.debug("is-available node encountered - looking for resource class "
  52                                         + plugin);
  53                 }
  54
  55             SvcLogicResource resourcePlugin = getSvcLogicResource(plugin);
  56
  57
  58                         if (resourcePlugin != null) {
  59                                 try {
  60                                         switch (resourcePlugin.isAvailable(resourceType, key, pfx, ctx)) {
  61                                         case SUCCESS:
  62                                                 outValue = "true";
  63                                                 break;
  64                                         case NOT_FOUND:
  65                                                 outValue = "false";
  66                                                 break;
  67                                         case FAILURE:
  68                                         default:
  69                                                 outValue = "false";
  70                                         }
  71                                 } catch (SvcLogicException e) {
  72                                         LOG.error("Caught exception from resource plugin", e);
  73                                         outValue = "failure";
  74                                 }
  75                         } else {
  76                                 LOG.warn("Could not find SvcLogicResource object for plugin "
  77                                                 + plugin);
  78                         }
  79
  80                 SvcLogicNode nextNode = node.getOutcomeValue(outValue);
  81                 if (nextNode != null) {
  82                         if (LOG.isDebugEnabled()) {
  83                                 LOG.debug("about to execute " + outValue + " branch");
  84                         }
  85                         return (nextNode);
  86                 }
  87
  88                 nextNode = node.getOutcomeValue("Other");
  89                 if (nextNode != null) {
  90                         if (LOG.isDebugEnabled()) {
  91                                 LOG.debug("about to execute Other branch");
  92                         }
  93                 } else {
  94                         if (LOG.isDebugEnabled()) {
  95
  96                                 LOG.debug("no "+outValue+" or Other branch found");
  97                         }
  98                 }
  99                 return (nextNode);
 100         }
 101
 102 }