opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/BindingMountPointAdapter.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 package org.opendaylight.controller.md.sal.binding.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.cache.CacheBuilder;
  12 import com.google.common.cache.LoadingCache;
  13 import org.opendaylight.controller.md.sal.binding.api.BindingService;
  14 import org.opendaylight.controller.md.sal.binding.api.MountPoint;
  15 import org.opendaylight.controller.md.sal.dom.api.DOMMountPoint;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMService;
  17 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  18
  19 public class BindingMountPointAdapter implements MountPoint {
  20
  21     private final InstanceIdentifier<?> identifier;
  22     private LoadingCache<Class<? extends BindingService>, Optional<BindingService>> services;
  23
  24     public BindingMountPointAdapter(final BindingToNormalizedNodeCodec codec, final DOMMountPoint domMountPoint) {
  25         identifier = codec.getCodecRegistry().fromYangInstanceIdentifier(domMountPoint.getIdentifier());
  26         services = CacheBuilder.newBuilder().build(new BindingDOMAdapterLoader(codec) {
  27
  28             @Override
  29             protected DOMService getDelegate(Class<? extends DOMService> reqDeleg) {
  30                 return domMountPoint.getService(reqDeleg).orNull();
  31             }
  32         });
  33     }
  34
  35     @Override
  36     public InstanceIdentifier<?> getIdentifier() {
  37         return identifier;
  38     }
  39
  40     @Override
  41     public <T extends BindingService> Optional<T> getService(Class<T> service) {
  42         Optional<BindingService> potential = services.getUnchecked(service);
  43         if(potential.isPresent()) {
  44             return Optional.of(service.cast(potential.get()));
  45         }
  46         return Optional.absent();
  47     }
  48
  49 }