openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/device/DeviceTransactionChainManagerProvider.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.openflowplugin.impl.device;
  10
  11 import java.util.HashMap;
  12 import java.util.Map;
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  15 import org.opendaylight.openflowplugin.impl.util.DeviceStateUtil;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.NodeId;
  17 import org.opendaylight.yangtools.concepts.Registration;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 /**
  22  * Created by Martin Bobak &lt;mbobak@cisco.com&gt; on 2.6.2015.
  23  */
  24 public class DeviceTransactionChainManagerProvider {
  25
  26
  27     private static final Logger LOG = LoggerFactory.getLogger(DeviceTransactionChainManagerProvider.class);
  28     private final Map<NodeId, TransactionChainManager> txChManagers = new HashMap<>();
  29     private final DataBroker dataBroker;
  30
  31     public DeviceTransactionChainManagerProvider(final DataBroker dataBroker) {
  32         this.dataBroker = dataBroker;
  33     }
  34
  35     public TransactionChainManagerRegistration provideTransactionChainManager(final ConnectionContext connectionContext) {
  36         final NodeId nodeId = connectionContext.getNodeId();
  37         TransactionChainManager transactionChainManager;
  38         boolean ownedByCurrentContext = false;
  39         synchronized (this) {
  40             transactionChainManager = txChManagers.get(nodeId);
  41             if (null == transactionChainManager) {
  42                 LOG.info("Creating new transaction chain for device {}", nodeId.toString());
  43                 Registration registration = new Registration() {
  44                     @Override
  45                     public void close() throws Exception {
  46                         txChManagers.remove(nodeId);
  47                     }
  48                 };
  49                 transactionChainManager = new TransactionChainManager(dataBroker,
  50                         DeviceStateUtil.createNodeInstanceIdentifier(connectionContext.getNodeId()),
  51                         registration);
  52                 txChManagers.put(nodeId, transactionChainManager);
  53                 ownedByCurrentContext = true;
  54             }
  55         }
  56         TransactionChainManagerRegistration transactionChainManagerRegistration = new TransactionChainManagerRegistration(ownedByCurrentContext, transactionChainManager);
  57         return transactionChainManagerRegistration;
  58     }
  59
  60     public final class TransactionChainManagerRegistration {
  61         private final TransactionChainManager transactionChainManager;
  62         private final boolean ownedByConnectionContext;
  63
  64         private TransactionChainManagerRegistration(final boolean ownedByConnectionContext, final TransactionChainManager transactionChainManager) {
  65             this.transactionChainManager = transactionChainManager;
  66             this.ownedByConnectionContext = ownedByConnectionContext;
  67         }
  68
  69         public boolean ownedByInvokingConnectionContext() {
  70             return ownedByConnectionContext;
  71         }
  72
  73         public TransactionChainManager getTransactionChainManager() {
  74             return transactionChainManager;
  75         }
  76     }
  77 }