binding/mdsal-binding-dom-codec-osgi/src/main/java/org/opendaylight/mdsal/binding/dom/codec/osgi/impl/GlobalBindingDOMCodecServices.java

   1 /*
   2  * Copyright (c) 2020 PANTHEON.tech, 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.dom.codec.osgi.impl;
   9
  10 import static com.google.common.base.Verify.verifyNotNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.primitives.UnsignedLong;
  14 import org.opendaylight.mdsal.binding.dom.codec.api.BindingCodecTree;
  15 import org.opendaylight.mdsal.binding.dom.codec.api.BindingLazyContainerNode;
  16 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
  17 import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeWriterFactory;
  18 import org.opendaylight.mdsal.binding.dom.codec.osgi.OSGiBindingDOMCodecServices;
  19 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  20 import org.opendaylight.mdsal.binding.dom.codec.spi.ForwardingBindingDOMCodecServices;
  21 import org.opendaylight.mdsal.binding.dom.codec.spi.LazyActionInputContainerNode;
  22 import org.opendaylight.mdsal.binding.dom.codec.spi.LazyActionOutputContainerNode;
  23 import org.opendaylight.yangtools.yang.binding.Action;
  24 import org.opendaylight.yangtools.yang.binding.RpcInput;
  25 import org.opendaylight.yangtools.yang.binding.RpcOutput;
  26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  27 import org.osgi.service.component.annotations.Activate;
  28 import org.osgi.service.component.annotations.Component;
  29 import org.osgi.service.component.annotations.Deactivate;
  30 import org.osgi.service.component.annotations.Reference;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 /**
  35  * A global {@link BindingDOMCodecServices}. It is injected with latest {@link OSGiBindingDOMCodecServices} generation.
  36  */
  37 @Beta
  38 @Component(immediate = true,
  39            service = {
  40                BindingDOMCodecServices.class,
  41                BindingNormalizedNodeWriterFactory.class,
  42                BindingNormalizedNodeSerializer.class,
  43                BindingCodecTree.class
  44            })
  45 public final class GlobalBindingDOMCodecServices extends ForwardingBindingDOMCodecServices {
  46     private static final Logger LOG = LoggerFactory.getLogger(GlobalBindingDOMCodecServices.class);
  47
  48     private BindingDOMCodecServices delegate;
  49     private UnsignedLong generation;
  50
  51     @Activate
  52     public GlobalBindingDOMCodecServices(@Reference(updated = "update") final OSGiBindingDOMCodecServices services) {
  53         updateDelegate(services);
  54         LOG.info("Global Binding/DOM Codec activated with generation {}", generation);
  55     }
  56
  57     @Deactivate
  58     void deactivate() {
  59         delegate = null;
  60         LOG.info("Global Binding/DOM Codec deactivated");
  61     }
  62
  63     void update(final OSGiBindingDOMCodecServices services) {
  64         updateDelegate(services);
  65         LOG.info("Global Binding/DOM Codec updated to generation {}", generation);
  66     }
  67
  68     private void updateDelegate(final OSGiBindingDOMCodecServices services) {
  69         generation = services.getGeneration();
  70         delegate = services.getService();
  71     }
  72
  73     @Override
  74     public BindingLazyContainerNode<RpcInput> toLazyNormalizedNodeActionInput(
  75             final Class<? extends Action<?, ?, ?>> action, final NodeIdentifier identifier, final RpcInput input) {
  76         return new LazyActionInputContainerNode(identifier, input, this, action);
  77     }
  78
  79     @Override
  80     public BindingLazyContainerNode<RpcOutput> toLazyNormalizedNodeActionOutput(
  81             final Class<? extends Action<?, ?, ?>> action, final NodeIdentifier identifier, final RpcOutput output) {
  82         return new LazyActionOutputContainerNode(identifier, output, this, action);
  83     }
  84
  85     @Override
  86     protected BindingDOMCodecServices delegate() {
  87         return verifyNotNull(delegate);
  88     }
  89 }