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 static com.google.common.base.Preconditions.checkNotNull;
  11 import static com.google.common.base.Preconditions.checkState;
  12 import static java.util.Objects.requireNonNull;
  13
  14 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  15 import org.opendaylight.mdsal.binding.api.DataBroker;
  16 import org.opendaylight.mdsal.binding.api.Transaction;
  17 import org.opendaylight.mdsal.binding.api.TransactionChain;
  18 import org.opendaylight.mdsal.binding.api.TransactionChainListener;
  19 import org.opendaylight.mdsal.dom.api.DOMActionService;
  20 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  21 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
  22 import org.opendaylight.mdsal.dom.api.DOMMountPointService;
  23 import org.opendaylight.mdsal.dom.api.DOMNotification;
  24 import org.opendaylight.mdsal.dom.api.DOMNotificationService;
  25 import org.opendaylight.mdsal.dom.api.DOMRpcService;
  26 import org.opendaylight.netconf.dom.api.NetconfDataTreeService;
  27 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  28 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  29 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class NetconfDeviceSalProvider implements AutoCloseable {
  34     private static final Logger LOG = LoggerFactory.getLogger(NetconfDeviceSalProvider.class);
  35
  36     private final RemoteDeviceId id;
  37     private final MountInstance mountInstance;
  38     private final DataBroker dataBroker;
  39
  40     private volatile NetconfDeviceTopologyAdapter topologyDatastoreAdapter;
  41
  42     private TransactionChain txChain;
  43
  44     private final TransactionChainListener transactionChainListener =  new TransactionChainListener() {
  45         @Override
  46         public void onTransactionChainFailed(final TransactionChain chain, final Transaction transaction,
  47                 final Throwable cause) {
  48             LOG.error("{}: TransactionChain({}) {} FAILED!", id, chain, transaction.getIdentifier(), cause);
  49             chain.close();
  50             resetTransactionChainForAdapaters();
  51             throw new IllegalStateException(id + "  TransactionChain(" + chain + ") not committed correctly", cause);
  52         }
  53
  54         @Override
  55         public void onTransactionChainSuccessful(final TransactionChain chain) {
  56             LOG.trace("{}: TransactionChain({}) SUCCESSFUL", id, chain);
  57         }
  58     };
  59
  60     public NetconfDeviceSalProvider(final RemoteDeviceId deviceId, final DOMMountPointService mountService) {
  61         this(deviceId, mountService, null);
  62     }
  63
  64     public NetconfDeviceSalProvider(final RemoteDeviceId deviceId, final DOMMountPointService mountService,
  65             final DataBroker dataBroker) {
  66         this.id = deviceId;
  67         mountInstance = new MountInstance(mountService, id);
  68         this.dataBroker = dataBroker;
  69         if (dataBroker != null) {
  70             txChain = requireNonNull(dataBroker).createTransactionChain(transactionChainListener);
  71             topologyDatastoreAdapter = new NetconfDeviceTopologyAdapter(id, txChain);
  72         }
  73     }
  74
  75     public MountInstance getMountInstance() {
  76         checkState(mountInstance != null, "%s: Mount instance was not initialized by sal. Cannot get mount instance",
  77                 id);
  78         return mountInstance;
  79     }
  80
  81     public NetconfDeviceTopologyAdapter getTopologyDatastoreAdapter() {
  82         final NetconfDeviceTopologyAdapter local = topologyDatastoreAdapter;
  83         checkState(local != null,
  84                 "%s: Sal provider %s was not initialized by sal. Cannot get topology datastore adapter", id, this);
  85         return local;
  86     }
  87
  88     @SuppressFBWarnings(value = "UPM_UNCALLED_PRIVATE_METHOD",
  89             justification = "https://github.com/spotbugs/spotbugs/issues/811")
  90     private void resetTransactionChainForAdapaters() {
  91         txChain = requireNonNull(dataBroker).createTransactionChain(transactionChainListener);
  92         topologyDatastoreAdapter.setTxChain(txChain);
  93         LOG.trace("{}: Resetting TransactionChain {}", id, txChain);
  94     }
  95
  96     @Override
  97     public void close() {
  98         mountInstance.close();
  99         if (topologyDatastoreAdapter != null) {
 100             topologyDatastoreAdapter.close();
 101         }
 102         topologyDatastoreAdapter = null;
 103         if (txChain != null) {
 104             txChain.close();
 105         }
 106     }
 107
 108     public static class MountInstance implements AutoCloseable {
 109
 110         private final DOMMountPointService mountService;
 111         private final RemoteDeviceId id;
 112
 113         private NetconfDeviceNotificationService notificationService;
 114         private ObjectRegistration<DOMMountPoint> topologyRegistration;
 115
 116         MountInstance(final DOMMountPointService mountService, final RemoteDeviceId id) {
 117             this.mountService = requireNonNull(mountService);
 118             this.id = requireNonNull(id);
 119         }
 120
 121         public synchronized void onTopologyDeviceConnected(final EffectiveModelContext initialCtx,
 122                 final DOMDataBroker broker, final NetconfDataTreeService netconfService, final DOMRpcService rpc,
 123                 final NetconfDeviceNotificationService newNotificationService, final DOMActionService deviceAction) {
 124             requireNonNull(mountService, "Closed");
 125             checkState(topologyRegistration == null, "Already initialized");
 126
 127             final DOMMountPointService.DOMMountPointBuilder mountBuilder =
 128                     mountService.createMountPoint(id.getTopologyPath());
 129             mountBuilder.addInitialSchemaContext(initialCtx);
 130
 131             if (broker != null) {
 132                 mountBuilder.addService(DOMDataBroker.class, broker);
 133             }
 134             mountBuilder.addService(DOMRpcService.class, rpc);
 135             mountBuilder.addService(DOMNotificationService.class, newNotificationService);
 136             if (deviceAction != null) {
 137                 mountBuilder.addService(DOMActionService.class, deviceAction);
 138             }
 139             if (netconfService != null) {
 140                 mountBuilder.addService(NetconfDataTreeService.class, netconfService);
 141             }
 142             this.notificationService = newNotificationService;
 143
 144             topologyRegistration = mountBuilder.register();
 145             LOG.debug("{}: TOPOLOGY Mountpoint exposed into MD-SAL {}", id, topologyRegistration);
 146         }
 147
 148         @SuppressWarnings("checkstyle:IllegalCatch")
 149         public synchronized void onTopologyDeviceDisconnected() {
 150             if (topologyRegistration == null) {
 151                 LOG.trace("{}: Not removing TOPOLOGY mountpoint from MD-SAL, mountpoint was not registered yet", id);
 152                 return;
 153             }
 154
 155             try {
 156                 topologyRegistration.close();
 157             } catch (final Exception e) {
 158                 // Only log and ignore
 159                 LOG.warn("Unable to unregister mount instance for {}. Ignoring exception", id.getTopologyPath(), e);
 160             } finally {
 161                 LOG.debug("{}: TOPOLOGY Mountpoint removed from MD-SAL {}", id, topologyRegistration);
 162                 topologyRegistration = null;
 163             }
 164         }
 165
 166         @Override
 167         public synchronized void close() {
 168             onTopologyDeviceDisconnected();
 169         }
 170
 171         public synchronized void publish(final DOMNotification domNotification) {
 172             checkNotNull(notificationService, "Device not set up yet, cannot handle notification %s", domNotification)
 173                 .publishNotification(domNotification);
 174         }
 175     }
 176
 177 }