southbound/southbound-impl/src/main/java/org/opendaylight/ovsdb/southbound/transactions/md/OvsdbQueueRemovedCommand.java

   1 /*
   2  * Copyright (c) 2016 Intel Communications 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.ovsdb.southbound.transactions.md;
  10
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.Map;
  14 import java.util.Optional;
  15 import org.opendaylight.mdsal.binding.api.ReadWriteTransaction;
  16 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  17 import org.opendaylight.ovsdb.lib.message.TableUpdates;
  18 import org.opendaylight.ovsdb.lib.notation.UUID;
  19 import org.opendaylight.ovsdb.lib.schema.DatabaseSchema;
  20 import org.opendaylight.ovsdb.lib.schema.typed.TyperUtils;
  21 import org.opendaylight.ovsdb.schema.openvswitch.Queue;
  22 import org.opendaylight.ovsdb.southbound.OvsdbConnectionInstance;
  23 import org.opendaylight.ovsdb.southbound.SouthboundMapper;
  24 import org.opendaylight.ovsdb.southbound.SouthboundUtil;
  25 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.Uuid;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.OvsdbNodeAugmentation;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.Queues;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.ovsdb.rev150105.ovsdb.node.attributes.QueuesKey;
  29 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  30 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 public class OvsdbQueueRemovedCommand extends AbstractTransactionCommand {
  35     private static final Logger LOG = LoggerFactory.getLogger(OvsdbQueueRemovedCommand.class);
  36
  37     private final Map<UUID, Queue> removedQueueRows;
  38
  39     public OvsdbQueueRemovedCommand(OvsdbConnectionInstance key,
  40             TableUpdates updates, DatabaseSchema dbSchema) {
  41         super(key, updates, dbSchema);
  42         removedQueueRows = TyperUtils.extractRowsRemoved(Queue.class, getUpdates(), getDbSchema());
  43     }
  44
  45     @Override
  46     public void execute(ReadWriteTransaction transaction) {
  47         if (removedQueueRows == null || removedQueueRows.isEmpty()) {
  48             return;
  49         }
  50
  51         final InstanceIdentifier<Node> nodeIId = getOvsdbConnectionInstance().getInstanceIdentifier();
  52         final Optional<Node> ovsdbNode = SouthboundUtil.readNode(transaction, nodeIId);
  53         if (ovsdbNode.isPresent()) {
  54             List<InstanceIdentifier<Queues>> result = new ArrayList<>();
  55             InstanceIdentifier<Node> ovsdbNodeIid =
  56                     SouthboundMapper.createInstanceIdentifier(getOvsdbConnectionInstance().getNodeId());
  57             for (UUID queueUuid : removedQueueRows.keySet()) {
  58                 QueuesKey queueKey = getQueueKey(ovsdbNode.get(), queueUuid);
  59                 if (queueKey != null) {
  60                     InstanceIdentifier<Queues> iid = ovsdbNodeIid
  61                         .augmentation(OvsdbNodeAugmentation.class)
  62                         .child(Queues.class, queueKey);
  63                     result.add(iid);
  64                 }
  65             }
  66             deleteQueue(transaction, result);
  67         }
  68     }
  69
  70     private static QueuesKey getQueueKey(Node node, UUID queueUuid) {
  71         Map<QueuesKey, Queues> queueList = node.augmentation(OvsdbNodeAugmentation.class).getQueues();
  72         if (queueList == null || queueList.isEmpty()) {
  73             LOG.debug("Deleting Queue {}, Ovsdb Node {} does not have a Queue list.", queueUuid, node);
  74             return null;
  75         }
  76         Uuid quUuid = new Uuid(queueUuid.toString());
  77         for (Queues queue : queueList.values()) {
  78             if (queue.getQueueUuid().equals(quUuid)) {
  79                 return queue.key();
  80             }
  81         }
  82         LOG.debug("Deleted Queue {} not found in Ovsdb Node {}", queueUuid, node);
  83         return null;
  84     }
  85
  86     private static void deleteQueue(ReadWriteTransaction transaction,
  87             List<InstanceIdentifier<Queues>> queueIids) {
  88         for (InstanceIdentifier<Queues> queueIid: queueIids) {
  89             transaction.delete(LogicalDatastoreType.OPERATIONAL, queueIid);
  90         }
  91     }
  92 }