binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/impl/mountpoint/BindingMountPointAdapter.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.mdsal.binding.javav2.dom.adapter.impl.mountpoint;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.cache.CacheBuilder;
  12 import com.google.common.cache.LoadingCache;
  13 import java.util.Optional;
  14 import javax.annotation.Nonnull;
  15 import javax.annotation.Nullable;
  16 import org.opendaylight.mdsal.binding.javav2.api.BindingService;
  17 import org.opendaylight.mdsal.binding.javav2.api.MountPoint;
  18 import org.opendaylight.mdsal.binding.javav2.dom.adapter.spi.loader.BindingDOMAdapterLoader;
  19 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  20 import org.opendaylight.mdsal.binding.javav2.spec.base.InstanceIdentifier;
  21 import org.opendaylight.mdsal.dom.api.DOMMountPoint;
  22 import org.opendaylight.mdsal.dom.api.DOMService;
  23
  24 /**
  25  * Binding mount point adapter.
  26  */
  27 @Beta
  28 public class BindingMountPointAdapter implements MountPoint {
  29
  30     private final InstanceIdentifier<?> identifier;
  31     private LoadingCache<Class<? extends BindingService>, Optional<BindingService>> services;
  32
  33     public BindingMountPointAdapter(final BindingToNormalizedNodeCodec codec, final DOMMountPoint domMountPoint) {
  34         identifier = codec.getCodecRegistry().fromYangInstanceIdentifier(domMountPoint.getIdentifier());
  35         services = CacheBuilder.newBuilder().build(new BindingDOMAdapterLoader(codec) {
  36
  37             @Nullable
  38             @Override
  39             protected DOMService getDelegate(final Class<? extends DOMService> reqDeleg) {
  40                 return domMountPoint.getService(reqDeleg).orElse(null);
  41             }
  42         });
  43     }
  44
  45     @Nonnull
  46     @Override
  47     public InstanceIdentifier<?> getIdentifier() {
  48         return identifier;
  49     }
  50
  51     @Override
  52     public <T extends BindingService> Optional<T> getService(final Class<T> service) {
  53         final Optional<BindingService> potential = services.getUnchecked(service);
  54         if (potential.isPresent()) {
  55             return Optional.of(service.cast(potential.get()));
  56         }
  57         return Optional.empty();
  58     }
  59 }