sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/CallNodeExecutor.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.SvcLogicGraph;
  28 import org.openecomp.sdnc.sli.SvcLogicNode;
  29 import org.openecomp.sdnc.sli.SvcLogicStore;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class CallNodeExecutor extends SvcLogicNodeExecutor {
  34
  35         private static final Logger LOG = LoggerFactory
  36                         .getLogger(CallNodeExecutor.class);
  37
  38         @Override
  39         public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node, SvcLogicContext ctx)
  40                         throws SvcLogicException {
  41
  42                 String outValue = "not-found";
  43
  44                 SvcLogicGraph myGraph = node.getGraph();
  45
  46                 if (myGraph == null)
  47                 {
  48                         LOG.debug("execute: getGraph returned null");
  49                 }
  50                 else
  51                 {
  52                         LOG.debug("execute: got SvcLogicGraph");
  53                 }
  54
  55                 SvcLogicExpression moduleExpr = null;
  56
  57                 String module = null;
  58
  59                 moduleExpr = node.getAttribute("module");
  60                 if (moduleExpr != null)
  61                 {
  62                         module  = SvcLogicExpressionResolver.evaluate(moduleExpr, node, ctx);
  63                 }
  64
  65                 if ((module == null) || (module.length() == 0))
  66                 {
  67                         if (myGraph != null)
  68                         {
  69                                 module = myGraph.getModule();
  70                                 LOG.debug("myGraph.getModule() returned "+module);
  71                         }
  72                 }
  73
  74                 SvcLogicExpression rpcExpr = null;
  75                 String rpc = null;
  76                 rpcExpr = node.getAttribute("rpc");
  77                 if (rpcExpr != null)
  78                 {
  79                         rpc  = SvcLogicExpressionResolver.evaluate(rpcExpr, node, ctx);
  80                 }
  81
  82                 if ((rpc == null) || (rpc.length() == 0))
  83                 {
  84                         if (myGraph != null)
  85                         {
  86                                 rpc = myGraph.getRpc();
  87                                 LOG.debug("myGraph.getRpc() returned "+rpc);
  88                         }
  89                 }
  90
  91                 String mode = null;
  92
  93                 moduleExpr = node.getAttribute("mode");
  94                 if (moduleExpr != null)
  95                 {
  96                         mode  = SvcLogicExpressionResolver.evaluate(moduleExpr, node, ctx);
  97                 }
  98
  99                 if ((mode == null) || (mode.length() == 0))
 100                 {
 101                         if (myGraph != null)
 102                         {
 103                                 mode = myGraph.getMode();
 104
 105                                 LOG.debug("myGraph.getMode() returned "+mode);
 106                         }
 107                 }
 108
 109                 String version = null;
 110
 111                 moduleExpr = node.getAttribute("version");
 112                 if (moduleExpr != null)
 113                 {
 114                         version  = SvcLogicExpressionResolver.evaluate(moduleExpr, node, ctx);
 115                 }
 116
 117                 String parentGraph = ctx.getAttribute("currentGraph");
 118         ctx.setAttribute("parentGraph", parentGraph);
 119
 120                 SvcLogicStore store = getStore();
 121
 122         if (store != null) {
 123                         SvcLogicGraph calledGraph = store.fetch(module, rpc, version, mode);
 124             LOG.debug("Parent " + parentGraph + " is calling child " + calledGraph.toString());
 125             ctx.setAttribute("currentGraph", calledGraph.toString());
 126             if (calledGraph != null) {
 127                                 svc.execute(calledGraph, ctx);
 128
 129                                 outValue = ctx.getStatus();
 130             } else {
 131                 LOG.error("Could not find service logic for [" + module + "," + rpc + "," + version + "," + mode + "]");
 132                         }
 133                 }
 134                 else
 135                 {
 136                         LOG.debug("Could not get SvcLogicStore reference");
 137                 }
 138
 139                 SvcLogicNode nextNode = node.getOutcomeValue(outValue);
 140                 if (nextNode != null) {
 141                         if (LOG.isDebugEnabled()) {
 142                                 LOG.debug("about to execute " + outValue + " branch");
 143                         }
 144             ctx.setAttribute("currentGraph", parentGraph);
 145                         return (nextNode);
 146                 }
 147
 148                 nextNode = node.getOutcomeValue("Other");
 149                 if (nextNode != null) {
 150                         if (LOG.isDebugEnabled()) {
 151                                 LOG.debug("about to execute Other branch");
 152                         }
 153                 } else {
 154                         if (LOG.isDebugEnabled()) {
 155                                 LOG.debug("no " + outValue + " or Other branch found");
 156                         }
 157                 }
 158         ctx.setAttribute("currentGraph", parentGraph);
 159         ctx.setAttribute("parentGraph", null);
 160
 161                 return (nextNode);
 162
 163         }
 164
 165 }