sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/ForNodeExecutor.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.BreakNodeException;
  25 import org.openecomp.sdnc.sli.SvcLogicContext;
  26 import org.openecomp.sdnc.sli.SvcLogicException;
  27 import org.openecomp.sdnc.sli.SvcLogicExpression;
  28 import org.openecomp.sdnc.sli.SvcLogicNode;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 public class ForNodeExecutor extends SvcLogicNodeExecutor {
  33
  34         private static final Logger LOG = LoggerFactory
  35                         .getLogger(ForNodeExecutor.class);
  36
  37         @Override
  38         public SvcLogicNode execute(SvcLogicServiceImpl svc, SvcLogicNode node,
  39                         SvcLogicContext ctx) throws SvcLogicException {
  40
  41                 SvcLogicExpression atomicExpr = node.getAttribute("atomic");
  42                 String atomicStr = SvcLogicExpressionResolver.evaluate(atomicExpr, node, ctx);
  43                 boolean isAtomic = !("false".equalsIgnoreCase(atomicStr));
  44
  45                 int numOutcomes = node.getNumOutcomes();
  46                 String idxVar = SvcLogicExpressionResolver.evaluate(
  47                                 node.getAttribute("index"), node, ctx);
  48                 String startVal = SvcLogicExpressionResolver.evaluate(
  49                                 node.getAttribute("start"), node, ctx);
  50                 String endVal = SvcLogicExpressionResolver.evaluate(
  51                                 node.getAttribute("end"), node, ctx);
  52
  53                 LOG.debug("Executing "+ (isAtomic ? "atomic" : "non-atomic") + " for loop - for (int " + idxVar + " = " + startVal
  54                                 + "; " + idxVar + " < " + endVal + "; " + idxVar + "++)");
  55
  56                 int startIdx = 0;
  57                 int endIdx = 0;
  58
  59                 try {
  60                         startIdx = Integer.parseInt(startVal);
  61                         endIdx = Integer.parseInt(endVal);
  62                 } catch (NumberFormatException e) {
  63                         SvcLogicExpression silentFailureExpr = node.getAttribute("silentFailure");
  64                         String silentFailure = SvcLogicExpressionResolver.evaluate(silentFailureExpr, node, ctx);
  65                         boolean isSilentFailure = Boolean.parseBoolean(silentFailure);
  66                         String message = "Invalid index values [" + startVal + "," + endVal + "]";
  67                         if(!isSilentFailure){
  68                         throw new SvcLogicException(message);
  69                         }else{
  70                             LOG.debug(message + ". Not exiting because silentFailure was set to true.");
  71                             return(null);
  72                         }
  73                 }
  74
  75         try {
  76                 for (int ctr = startIdx; ctr < endIdx; ctr++) {
  77
  78                         ctx.setAttribute(idxVar, "" + ctr);
  79
  80                         for (int i = 0; i < numOutcomes; i++) {
  81
  82                                 if ("failure".equals(ctx.getStatus()) && isAtomic) {
  83                                         LOG.info("For - stopped executing nodes due to failure status");
  84                                         return(null);
  85                                 }
  86
  87                                 SvcLogicNode nextNode = node.getOutcomeValue("" + (i + 1));
  88                                 if (nextNode != null) {
  89                                         if (LOG.isDebugEnabled()) {
  90                                                 LOG.debug("For  - executing outcome " + (i + 1));
  91                                         }
  92                                         SvcLogicNode innerNextNode = nextNode;
  93                                         while (innerNextNode != null) {
  94                                                 innerNextNode = svc.executeNode(innerNextNode, ctx);
  95                                         }
  96                                 } else {
  97                                         if (LOG.isDebugEnabled()) {
  98                                                 LOG.debug("For - done: no outcome " + (i + 1));
  99                                         }
 100                                 }
 101                         }
 102                 }
 103         } catch (BreakNodeException br) {
 104             LOG.debug("ForNodeExecutor caught break");
 105         }
 106                 return (null);
 107         }
 108
 109 }