sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/UpdateNodeExecutor.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 java.util.HashMap;
  25 import java.util.Iterator;
  26 import java.util.Map;
  27 import java.util.Set;
  28
  29 import org.openecomp.sdnc.sli.SvcLogicContext;
  30 import org.openecomp.sdnc.sli.SvcLogicException;
  31 import org.openecomp.sdnc.sli.SvcLogicExpression;
  32 import org.openecomp.sdnc.sli.SvcLogicNode;
  33 import org.openecomp.sdnc.sli.SvcLogicResource;
  34 import org.osgi.framework.BundleContext;
  35 import org.osgi.framework.FrameworkUtil;
  36 import org.osgi.framework.ServiceReference;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 public class UpdateNodeExecutor extends SvcLogicNodeExecutor {
  41
  42         private static final Logger LOG = LoggerFactory
  43                         .getLogger(UpdateNodeExecutor.class);
  44
  45         @Override
  46         public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node,
  47                         SvcLogicContext ctx) throws SvcLogicException {
  48
  49                 String plugin = SvcLogicExpressionResolver.evaluate(
  50                                 node.getAttribute("plugin"), node, ctx);
  51                 String resourceType = SvcLogicExpressionResolver.evaluate(
  52                                 node.getAttribute("resource"), node, ctx);
  53                 String key = SvcLogicExpressionResolver.evaluateAsKey(
  54                                 node.getAttribute("key"), node, ctx);
  55                 String pfx = SvcLogicExpressionResolver.evaluate(
  56                                 node.getAttribute("pfx"), node, ctx);
  57
  58
  59                 Map<String, String> parmMap = new HashMap<String, String>();
  60
  61                 Set<Map.Entry<String, SvcLogicExpression>> parmSet = node
  62                                 .getParameterSet();
  63                 boolean hasParms = false;
  64
  65                 for (Iterator<Map.Entry<String, SvcLogicExpression>> iter = parmSet
  66                                 .iterator(); iter.hasNext();) {
  67                         hasParms = true;
  68                         Map.Entry<String, SvcLogicExpression> curEnt = iter.next();
  69                         String curName = curEnt.getKey();
  70                         SvcLogicExpression curExpr = curEnt.getValue();
  71                         if (curExpr != null) {
  72                                 String curExprValue = SvcLogicExpressionResolver.evaluate(
  73                                                 curExpr, node, ctx);
  74
  75                                 LOG.debug("Parameter " + curName + " = "
  76                                                 + curExpr.asParsedExpr() + " resolves to "
  77                                                 + curExprValue);
  78
  79                                 parmMap.put(curName, curExprValue);
  80                         }
  81                 }
  82
  83                 String outValue = "failure";
  84
  85                 if (LOG.isDebugEnabled()) {
  86                         LOG.debug("save node encountered - looking for resource class "
  87                                         + plugin);
  88                 }
  89
  90
  91         SvcLogicResource resourcePlugin = getSvcLogicResource(plugin);
  92
  93
  94                         if (resourcePlugin != null) {
  95
  96                                 try {
  97                                         switch (resourcePlugin.update(resourceType, key,
  98                                                         parmMap, pfx, ctx)) {
  99                                         case SUCCESS:
 100                                                 outValue = "success";
 101                                                 break;
 102                                         case NOT_FOUND:
 103                                                 outValue = "not-found";
 104                                                 break;
 105                                         case FAILURE:
 106                                         default:
 107                                                 outValue = "failure";
 108                                         }
 109                                 } catch (SvcLogicException e) {
 110                                         LOG.error("Caught exception from resource plugin", e);
 111                                         outValue = "failure";
 112                                 }
 113                         } else {
 114                                 LOG.warn("Could not find SvcLogicResource object for plugin "
 115                                                 + plugin);
 116                         }
 117
 118                 SvcLogicNode nextNode = node.getOutcomeValue(outValue);
 119                 if (nextNode != null) {
 120                         if (LOG.isDebugEnabled()) {
 121                                 LOG.debug("about to execute " + outValue + " branch");
 122                         }
 123                         return (nextNode);
 124                 }
 125
 126                 nextNode = node.getOutcomeValue("Other");
 127                 if (nextNode != null) {
 128                         if (LOG.isDebugEnabled()) {
 129                                 LOG.debug("about to execute Other branch");
 130                         }
 131                 } else {
 132                         if (LOG.isDebugEnabled()) {
 133                                 LOG.debug("no "+outValue+" or Other branch found");
 134                         }
 135                 }
 136                 return (nextNode);
 137         }
 138
 139     protected SvcLogicResource getSvcLogicResource(String plugin) {
 140         BundleContext bctx = FrameworkUtil.getBundle(this.getClass())
 141                 .getBundleContext();
 142
 143         ServiceReference sref = bctx.getServiceReference(plugin);
 144         if (sref != null) {
 145             SvcLogicResource resourcePlugin = (SvcLogicResource) bctx
 146                     .getService(sref);
 147             return resourcePlugin;
 148         }
 149         else {
 150             LOG.warn("Could not find service reference object for plugin " + plugin);
 151             return null;
 152         }
 153     }
 154 }