southbound/southbound-impl/src/main/java/org/opendaylight/ovsdb/southbound/ovsdb/transact/TransactUtils.java

   1 /*
   2  * Copyright (c) 2014 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 package org.opendaylight.ovsdb.southbound.ovsdb.transact;
   9
  10 import java.util.HashMap;
  11 import java.util.HashSet;
  12 import java.util.Map;
  13 import java.util.Map.Entry;
  14 import java.util.Set;
  15
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncDataChangeEvent;
  17 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  18 import org.opendaylight.yangtools.yang.binding.DataObject;
  19 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 public class TransactUtils {
  24     private static final Logger LOG = LoggerFactory.getLogger(TransactUtils.class);
  25
  26     public static Map<InstanceIdentifier<Node>,Node> extractNode(
  27             Map<InstanceIdentifier<?>, DataObject> changes) {
  28         Map<InstanceIdentifier<Node>,Node> result
  29             = new HashMap<InstanceIdentifier<Node>,Node>();
  30         if (changes != null && changes.entrySet() != null) {
  31             for (Entry<InstanceIdentifier<?>, DataObject> created : changes.entrySet()) {
  32                 if (created.getValue() instanceof Node) {
  33                     Node value = (Node) created.getValue();
  34                     Class<?> type = created.getKey().getTargetType();
  35                     if (type.equals(Node.class)) {
  36                         @SuppressWarnings("unchecked") // Actually checked above
  37                         InstanceIdentifier<Node> iid = (InstanceIdentifier<Node>) created.getKey();
  38                         result.put(iid, value);
  39                     }
  40                 }
  41             }
  42         }
  43         return result;
  44     }
  45
  46     public static <T extends DataObject> Map<InstanceIdentifier<T>,T> extractCreated(
  47             AsyncDataChangeEvent<InstanceIdentifier<?>, DataObject> changes,Class<T> klazz) {
  48         return extract(changes.getCreatedData(),klazz);
  49     }
  50
  51     public static <T extends DataObject> Map<InstanceIdentifier<T>,T> extractUpdated(
  52             AsyncDataChangeEvent<InstanceIdentifier<?>,DataObject> changes,Class<T> klazz) {
  53         return extract(changes.getUpdatedData(),klazz);
  54     }
  55
  56     public static <T extends DataObject> Map<InstanceIdentifier<T>,T> extractCreatedOrUpdated(
  57             AsyncDataChangeEvent<InstanceIdentifier<?>,DataObject> changes,Class<T> klazz) {
  58         Map<InstanceIdentifier<T>,T> result = extractUpdated(changes,klazz);
  59         result.putAll(extractCreated(changes,klazz));
  60         return result;
  61     }
  62
  63     public static <T extends DataObject> Map<InstanceIdentifier<T>,T> extractOriginal(
  64             AsyncDataChangeEvent<InstanceIdentifier<?>,DataObject> changes,Class<T> klazz) {
  65         return extract(changes.getOriginalData(),klazz);
  66     }
  67
  68     public static <T extends DataObject> Set<InstanceIdentifier<T>> extractRemoved(
  69             AsyncDataChangeEvent<InstanceIdentifier<?>,DataObject> changes,Class<T> klazz) {
  70         Set<InstanceIdentifier<T>> result = new HashSet<InstanceIdentifier<T>>();
  71         if (changes != null && changes.getRemovedPaths() != null) {
  72             for (InstanceIdentifier<?> iid : changes.getRemovedPaths()) {
  73                 if (iid.getTargetType().equals(klazz)) {
  74                     @SuppressWarnings("unchecked") // Actually checked above
  75                     InstanceIdentifier<T> iidn = (InstanceIdentifier<T>)iid;
  76                     result.add(iidn);
  77                 }
  78             }
  79         }
  80         return result;
  81     }
  82
  83     public static <T extends DataObject> Map<InstanceIdentifier<T>,T> extract(
  84             Map<InstanceIdentifier<?>, DataObject> changes, Class<T> klazz) {
  85         Map<InstanceIdentifier<T>,T> result = new HashMap<InstanceIdentifier<T>,T>();
  86         if (changes != null && changes.entrySet() != null) {
  87             for (Entry<InstanceIdentifier<?>, DataObject> created : changes.entrySet()) {
  88                 if (klazz.isInstance(created.getValue())) {
  89                     @SuppressWarnings("unchecked")
  90                     T value = (T) created.getValue();
  91                     Class<?> type = created.getKey().getTargetType();
  92                     if (type.equals(klazz)) {
  93                         @SuppressWarnings("unchecked") // Actually checked above
  94                         InstanceIdentifier<T> iid = (InstanceIdentifier<T>) created.getKey();
  95                         result.put(iid, value);
  96                     }
  97                 }
  98             }
  99         }
 100         return result;
 101     }
 102 }