opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/sal/binding/impl/MountPointManagerImpl.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.controller.sal.binding.impl;
   9
  10 import java.util.concurrent.ConcurrentHashMap;
  11 import java.util.concurrent.ConcurrentMap;
  12
  13 import org.opendaylight.controller.md.sal.binding.util.AbstractBindingSalProviderInstance;
  14 import org.opendaylight.controller.sal.binding.api.mount.MountProviderInstance;
  15 import org.opendaylight.controller.sal.binding.api.mount.MountProviderService;
  16 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  17 import org.opendaylight.yangtools.concepts.util.ListenerRegistry;
  18 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 import com.google.common.util.concurrent.ListeningExecutorService;
  23
  24 public class MountPointManagerImpl implements MountProviderService {
  25
  26     public final Logger LOG = LoggerFactory.getLogger(MountPointManagerImpl.class);
  27
  28     private final ConcurrentMap<InstanceIdentifier<?>, BindingMountPointImpl> mountPoints;
  29     private final ListenerRegistry<MountProvisionListener> listeners = ListenerRegistry.create();
  30
  31     private ListeningExecutorService notificationExecutor;
  32     private ListeningExecutorService dataCommitExecutor;
  33
  34     public MountPointManagerImpl() {
  35         mountPoints = new ConcurrentHashMap<>();
  36     }
  37
  38     public ListeningExecutorService getNotificationExecutor() {
  39         return notificationExecutor;
  40     }
  41
  42     public void setNotificationExecutor(final ListeningExecutorService notificationExecutor) {
  43         this.notificationExecutor = notificationExecutor;
  44     }
  45
  46     public ListeningExecutorService getDataCommitExecutor() {
  47         return dataCommitExecutor;
  48     }
  49
  50     public void setDataCommitExecutor(final ListeningExecutorService dataCommitExecutor) {
  51         this.dataCommitExecutor = dataCommitExecutor;
  52     }
  53
  54     @Override
  55     public synchronized BindingMountPointImpl createMountPoint(final InstanceIdentifier<?> path) {
  56         BindingMountPointImpl potential = mountPoints.get(path);
  57         if (potential != null) {
  58             throw new IllegalStateException("Mount point already exists.");
  59         }
  60         return createOrGetMountPointImpl(path);
  61     }
  62
  63     @Override
  64     public BindingMountPointImpl createOrGetMountPoint(final InstanceIdentifier<?> path) {
  65         BindingMountPointImpl potential = getMountPoint(path);
  66         if (potential != null) {
  67             return potential;
  68         }
  69         return createOrGetMountPointImpl(path);
  70     }
  71
  72     @Override
  73     public BindingMountPointImpl getMountPoint(final InstanceIdentifier<?> path) {
  74         return mountPoints.get(path);
  75     }
  76
  77     private synchronized BindingMountPointImpl createOrGetMountPointImpl(final InstanceIdentifier<?> path) {
  78         BindingMountPointImpl potential = getMountPoint(path);
  79         if (potential != null) {
  80             return potential;
  81         }
  82         RpcProviderRegistryImpl rpcRegistry = new RpcProviderRegistryImpl("mount");
  83         NotificationBrokerImpl notificationBroker = new NotificationBrokerImpl(getNotificationExecutor());
  84         DataBrokerImpl dataBroker = new DataBrokerImpl();
  85         dataBroker.setExecutor(getDataCommitExecutor());
  86         BindingMountPointImpl mountInstance = new BindingMountPointImpl(path, rpcRegistry, notificationBroker,
  87                 dataBroker);
  88         mountPoints.putIfAbsent(path, mountInstance);
  89         notifyMountPointCreated(path);
  90         return mountInstance;
  91     }
  92
  93     private void notifyMountPointCreated(final InstanceIdentifier<?> path) {
  94         for (ListenerRegistration<MountProvisionListener> listener : listeners) {
  95             try {
  96                 listener.getInstance().onMountPointCreated(path);
  97             } catch (Exception e) {
  98                 LOG.error("Unhandled exception during invoking listener.", e);
  99             }
 100         }
 101     }
 102
 103     @Override
 104     public ListenerRegistration<MountProvisionListener> registerProvisionListener(final MountProvisionListener listener) {
 105         return listeners.register(listener);
 106     }
 107
 108     public class BindingMountPointImpl extends
 109     AbstractBindingSalProviderInstance<DataBrokerImpl, NotificationBrokerImpl, RpcProviderRegistryImpl>
 110     implements MountProviderInstance {
 111
 112         private final InstanceIdentifier<?> identifier;
 113
 114         public BindingMountPointImpl(final org.opendaylight.yangtools.yang.binding.InstanceIdentifier<?> identifier,
 115                 final RpcProviderRegistryImpl rpcRegistry, final NotificationBrokerImpl notificationBroker,
 116                 final DataBrokerImpl dataBroker) {
 117             super(rpcRegistry, notificationBroker, dataBroker);
 118             this.identifier = identifier;
 119         }
 120
 121         // Needed only for BI Connector
 122         public DataBrokerImpl getDataBrokerImpl() {
 123             return getDataBroker();
 124         }
 125
 126         @Override
 127         public InstanceIdentifier<?> getIdentifier() {
 128             return this.identifier;
 129         }
 130     }
 131 }