southbound/southbound-impl/src/main/java/org/opendaylight/ovsdb/southbound/SouthboundProvider.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;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  11 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  12 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  13 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  14 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker.ProviderContext;
  15 import org.opendaylight.controller.sal.binding.api.BindingAwareProvider;
  16 import org.opendaylight.ovsdb.lib.OvsdbConnection;
  17 import org.opendaylight.ovsdb.lib.impl.OvsdbConnectionService;
  18 import org.opendaylight.ovsdb.southbound.transactions.md.TransactionInvoker;
  19 import org.opendaylight.ovsdb.southbound.transactions.md.TransactionInvokerImpl;
  20 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopology;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NetworkTopologyBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.Topology;
  23 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.TopologyKey;
  25 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 import com.google.common.base.Optional;
  30 import com.google.common.util.concurrent.CheckedFuture;
  31
  32 public class SouthboundProvider implements BindingAwareProvider, AutoCloseable {
  33
  34     private static final Logger LOG = LoggerFactory.getLogger(SouthboundProvider.class);
  35     private DataBroker db;
  36     private OvsdbConnectionManager cm;
  37     private OvsdbNodeDataChangeListener ovsdbNodeListener;
  38     private OvsdbManagedNodeDataChangeListener ovsdbManagedNodeListener;
  39     private OvsdbTerminationPointDataChangeListener ovsdbTerminationPointListener;
  40     private TransactionInvoker txInvoker;
  41
  42
  43     @Override
  44     public void onSessionInitiated(ProviderContext session) {
  45         LOG.info("SouthboundProvider Session Initiated");
  46         db = session.getSALService(DataBroker.class);
  47         this.txInvoker = new TransactionInvokerImpl(db);
  48         cm = new OvsdbConnectionManager(db,txInvoker);
  49         ovsdbNodeListener = new OvsdbNodeDataChangeListener(db, cm);
  50         ovsdbManagedNodeListener = new OvsdbManagedNodeDataChangeListener(db, cm);
  51         ovsdbTerminationPointListener = new OvsdbTerminationPointDataChangeListener(db, cm);
  52         initializeOvsdbTopology(LogicalDatastoreType.OPERATIONAL);
  53         initializeOvsdbTopology(LogicalDatastoreType.CONFIGURATION);
  54         OvsdbConnection ovsdbConnection = new OvsdbConnectionService();
  55         ovsdbConnection.registerConnectionListener(cm);
  56         ovsdbConnection.startOvsdbManager(SouthboundConstants.DEFAULT_OVSDB_PORT);
  57     }
  58
  59     @Override
  60     public void close() throws Exception {
  61         LOG.info("SouthboundProvider Closed");
  62         cm.close();
  63         ovsdbNodeListener.close();
  64         ovsdbManagedNodeListener.close();
  65         ovsdbTerminationPointListener.close();
  66     }
  67
  68     private void initializeOvsdbTopology(LogicalDatastoreType type) {
  69         InstanceIdentifier<Topology> path = InstanceIdentifier
  70                 .create(NetworkTopology.class)
  71                 .child(Topology.class, new TopologyKey(SouthboundConstants.OVSDB_TOPOLOGY_ID));
  72         ReadWriteTransaction transaction = db.newReadWriteTransaction();
  73         initializeTopology(transaction,type);
  74         CheckedFuture<Optional<Topology>, ReadFailedException> ovsdbTp = transaction.read(type, path);
  75         try {
  76             if (!ovsdbTp.get().isPresent()) {
  77                 TopologyBuilder tpb = new TopologyBuilder();
  78                 tpb.setTopologyId(SouthboundConstants.OVSDB_TOPOLOGY_ID);
  79                 transaction.put(type, path, tpb.build());
  80                 transaction.submit();
  81             } else {
  82                 transaction.cancel();
  83             }
  84         } catch (Exception e) {
  85             LOG.error("Error initializing ovsdb topology {}",e);
  86         }
  87     }
  88
  89     private void initializeTopology(ReadWriteTransaction transaction, LogicalDatastoreType type) {
  90         InstanceIdentifier<NetworkTopology> path = InstanceIdentifier.create(NetworkTopology.class);
  91         CheckedFuture<Optional<NetworkTopology>, ReadFailedException> topology = transaction.read(type,path);
  92         try {
  93             if (!topology.get().isPresent()) {
  94                 NetworkTopologyBuilder ntb = new NetworkTopologyBuilder();
  95                 transaction.put(type,path,ntb.build());
  96             }
  97         } catch (Exception e) {
  98             LOG.error("Error initializing ovsdb topology {}",e);
  99         }
 100     }
 101 }