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