opendaylight/netconf/mdsal-netconf-connector/src/main/java/org/opendaylight/controller/netconf/mdsal/connector/ops/DataTreeChangeTracker.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.netconf.mdsal.connector.ops;
  10
  11 import com.google.common.collect.Lists;
  12 import java.util.ArrayDeque;
  13 import java.util.ArrayList;
  14 import java.util.Deque;
  15 import java.util.List;
  16 import org.opendaylight.yangtools.yang.data.api.ModifyAction;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
  18 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  19
  20 public class DataTreeChangeTracker {
  21
  22     private final ModifyAction defaultAction;
  23
  24     private final Deque<ModifyAction> actions;
  25     private final Deque<PathArgument> currentPath;
  26     private final ArrayList<DataTreeChange> dataTreeChanges;
  27     private int deleteOperationTracker = 0;
  28     private int removeOperationTracker = 0;
  29
  30     public DataTreeChangeTracker(final ModifyAction defaultAction) {
  31         this.defaultAction = defaultAction;
  32         this.currentPath = new ArrayDeque<>();
  33         this.actions = new ArrayDeque<>();
  34         this.dataTreeChanges = new ArrayList<>();
  35     }
  36
  37     public void pushAction(final ModifyAction action) {
  38         if (ModifyAction.DELETE.equals(action)) {
  39             deleteOperationTracker++;
  40         }
  41
  42         if (ModifyAction.REMOVE.equals(action)) {
  43             removeOperationTracker++;
  44         }
  45         this.actions.push(action);
  46     }
  47
  48     public ModifyAction peekAction() {
  49         return this.actions.peekFirst();
  50     }
  51
  52     public ModifyAction popAction() {
  53         final ModifyAction popResult = actions.pop();
  54         if (ModifyAction.DELETE.equals(popResult)) {
  55             deleteOperationTracker--;
  56         }
  57
  58         if (ModifyAction.REMOVE.equals(popResult)) {
  59             removeOperationTracker--;
  60         }
  61         return popResult;
  62     }
  63
  64     public int getDeleteOperationTracker() {
  65         return deleteOperationTracker;
  66     }
  67
  68     public int getRemoveOperationTracker() {
  69         return removeOperationTracker;
  70     }
  71
  72     public void addDataTreeChange(final DataTreeChange change) {
  73         dataTreeChanges.add(change);
  74     }
  75
  76     public ArrayList<DataTreeChange> getDataTreeChanges() {
  77         return dataTreeChanges;
  78     }
  79
  80     public ModifyAction getDefaultAction() {
  81         return defaultAction;
  82     }
  83
  84     public void pushPath(final PathArgument pathArgument) {
  85         currentPath.push(pathArgument);
  86     }
  87
  88     public PathArgument popPath() {
  89         return currentPath.pop();
  90     }
  91
  92     public Deque<PathArgument> getCurrentPath() {
  93         return currentPath;
  94     }
  95
  96
  97     public static final class DataTreeChange {
  98
  99         private final NormalizedNode<?, ?> changeRoot;
 100         private final ModifyAction action;
 101         private final List<PathArgument> path;
 102
 103         public DataTreeChange(final NormalizedNode<?, ?> changeRoot, final ModifyAction action, final ArrayList<PathArgument> path) {
 104             this.changeRoot = changeRoot;
 105             this.action = action;
 106             this.path = Lists.reverse(path);
 107         }
 108
 109         public NormalizedNode<?, ?> getChangeRoot() {
 110             return changeRoot;
 111         }
 112
 113         public ModifyAction getAction() {
 114             return action;
 115         }
 116
 117         public List<PathArgument> getPath() {
 118             return path;
 119         }
 120     }
 121 }