netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/sal/NetconfDeviceSalProvider.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.netconf.sal.connect.netconf.sal;
   9
  10 import com.google.common.base.Preconditions;
  11 import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
  12 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  13 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  14 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  15 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMMountPointService;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMNotification;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMNotificationService;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
  22 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  23 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  24 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 public class NetconfDeviceSalProvider implements AutoCloseable {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(NetconfDeviceSalProvider.class);
  31
  32     private final RemoteDeviceId id;
  33     private final MountInstance mountInstance;
  34     private final DataBroker dataBroker;
  35
  36     private volatile NetconfDeviceTopologyAdapter topologyDatastoreAdapter;
  37
  38     private BindingTransactionChain txChain;
  39
  40     private final TransactionChainListener transactionChainListener =  new TransactionChainListener() {
  41         @Override
  42         public void onTransactionChainFailed(final TransactionChain<?, ?> chain,
  43                                              final AsyncTransaction<?, ?> transaction, final Throwable cause) {
  44             LOG.error("{}: TransactionChain({}) {} FAILED!", id, chain, transaction.getIdentifier(), cause);
  45             chain.close();
  46             resetTransactionChainForAdapaters();
  47             throw new IllegalStateException(id + "  TransactionChain(" + chain + ") not committed correctly", cause);
  48         }
  49
  50         @Override
  51         public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
  52             LOG.trace("{}: TransactionChain({}) {} SUCCESSFUL", id, chain);
  53         }
  54     };
  55
  56     public NetconfDeviceSalProvider(final RemoteDeviceId deviceId, final DOMMountPointService mountService,
  57                                     final DataBroker dataBroker) {
  58         this.id = deviceId;
  59         mountInstance = new MountInstance(mountService, id);
  60         this.dataBroker = dataBroker;
  61         txChain = Preconditions.checkNotNull(dataBroker).createTransactionChain(transactionChainListener);
  62
  63         topologyDatastoreAdapter = new NetconfDeviceTopologyAdapter(id, txChain);
  64     }
  65
  66     public NetconfDeviceSalProvider(final RemoteDeviceId deviceId, final DOMMountPointService mountService) {
  67         this.id = deviceId;
  68         mountInstance = new MountInstance(mountService, id);
  69         this.dataBroker = null;
  70     }
  71
  72     public MountInstance getMountInstance() {
  73         Preconditions.checkState(mountInstance != null,
  74                 "%s: Mount instance was not initialized by sal. Cannot get mount instance", id);
  75         return mountInstance;
  76     }
  77
  78     public NetconfDeviceTopologyAdapter getTopologyDatastoreAdapter() {
  79         Preconditions.checkState(topologyDatastoreAdapter != null,
  80                 "%s: Sal provider %s was not initialized by sal. Cannot get topology datastore adapter", id);
  81         return topologyDatastoreAdapter;
  82     }
  83
  84     private void resetTransactionChainForAdapaters() {
  85         txChain = Preconditions.checkNotNull(dataBroker).createTransactionChain(transactionChainListener);
  86
  87         topologyDatastoreAdapter.setTxChain(txChain);
  88
  89         LOG.trace("{}: Resetting TransactionChain {}", id, txChain);
  90
  91     }
  92
  93     public void close() throws Exception {
  94         mountInstance.close();
  95         if (topologyDatastoreAdapter != null) {
  96             topologyDatastoreAdapter.close();
  97         }
  98         topologyDatastoreAdapter = null;
  99         if (txChain != null) {
 100             txChain.close();
 101         }
 102     }
 103
 104     public static final class MountInstance implements AutoCloseable {
 105
 106         private final DOMMountPointService mountService;
 107         private final RemoteDeviceId id;
 108         private NetconfDeviceNotificationService notificationService;
 109
 110         private ObjectRegistration<DOMMountPoint> topologyRegistration;
 111
 112         public MountInstance(final DOMMountPointService mountService, final RemoteDeviceId id) {
 113             this.mountService = Preconditions.checkNotNull(mountService);
 114             this.id = Preconditions.checkNotNull(id);
 115         }
 116
 117         public synchronized void onTopologyDeviceConnected(final SchemaContext initialCtx,
 118                                                            final DOMDataBroker broker, final DOMRpcService rpc,
 119                                                            final NetconfDeviceNotificationService notificationService) {
 120             Preconditions.checkNotNull(mountService, "Closed");
 121             Preconditions.checkState(topologyRegistration == null, "Already initialized");
 122
 123             final DOMMountPointService.DOMMountPointBuilder mountBuilder =
 124                     mountService.createMountPoint(id.getTopologyPath());
 125             mountBuilder.addInitialSchemaContext(initialCtx);
 126
 127             mountBuilder.addService(DOMDataBroker.class, broker);
 128             mountBuilder.addService(DOMRpcService.class, rpc);
 129             mountBuilder.addService(DOMNotificationService.class, notificationService);
 130             this.notificationService = notificationService;
 131
 132             topologyRegistration = mountBuilder.register();
 133             LOG.debug("{}: TOPOLOGY Mountpoint exposed into MD-SAL {}", id, topologyRegistration);
 134
 135         }
 136
 137         @SuppressWarnings("checkstyle:IllegalCatch")
 138         public synchronized void onTopologyDeviceDisconnected() {
 139             if (topologyRegistration == null) {
 140                 LOG.trace("{}: Not removing TOPOLOGY mountpoint from MD-SAL, mountpoint was not registered yet", id);
 141                 return;
 142             }
 143
 144             try {
 145                 topologyRegistration.close();
 146             } catch (final Exception e) {
 147                 // Only log and ignore
 148                 LOG.warn("Unable to unregister mount instance for {}. Ignoring exception", id.getTopologyPath(), e);
 149             } finally {
 150                 LOG.debug("{}: TOPOLOGY Mountpoint removed from MD-SAL {}", id, topologyRegistration);
 151                 topologyRegistration = null;
 152             }
 153         }
 154
 155         @Override
 156         public synchronized void close() throws Exception {
 157             onTopologyDeviceDisconnected();
 158         }
 159
 160         public synchronized void publish(final DOMNotification domNotification) {
 161             Preconditions.checkNotNull(notificationService, "Device not set up yet, cannot handle notification {}",
 162                     domNotification);
 163             notificationService.publishNotification(domNotification);
 164         }
 165     }
 166
 167 }