binding/mdsal-binding-dom-codec-osgi/src/main/java/org/opendaylight/mdsal/binding/dom/codec/osgi/impl/OSGiBindingDOMCodecServicesImpl.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.annotations.VisibleForTesting;
  14 import com.google.common.primitives.UnsignedLong;
  15 import java.util.Dictionary;
  16 import java.util.Map;
  17 import org.eclipse.jdt.annotation.NonNull;
  18 import org.opendaylight.mdsal.binding.dom.codec.osgi.OSGiBindingDOMCodecServices;
  19 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  20 import org.osgi.framework.Constants;
  21 import org.osgi.framework.FrameworkUtil;
  22 import org.osgi.service.component.annotations.Activate;
  23 import org.osgi.service.component.annotations.Component;
  24 import org.osgi.service.component.annotations.Deactivate;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * A Factory Component which implements {@link OSGiBindingDOMCodecServices}.
  30  */
  31 @Beta
  32 @Component(factory = OSGiBindingDOMCodecServicesImpl.FACTORY_NAME, service = OSGiBindingDOMCodecServices.class)
  33 public final class OSGiBindingDOMCodecServicesImpl implements OSGiBindingDOMCodecServices {
  34     // OSGi DS Component Factory name
  35     static final String FACTORY_NAME =
  36             "org.opendaylight.mdsal.binding.dom.codec.osgi.impl.OSGiBindingDOMCodecServicesImpl";
  37
  38     // Keys to for activation properties
  39     @VisibleForTesting
  40     static final String GENERATION = "org.opendaylight.mdsal.binding.dom.codec.osgi.impl.Generation";
  41     @VisibleForTesting
  42     static final String DELEGATE = "org.opendaylight.mdsal.binding.dom.codec.osgi.impl.BindingDOMCodecServices";
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(OSGiBindingDOMCodecServicesImpl.class);
  45
  46     private BindingDOMCodecServices delegate;
  47     private UnsignedLong generation;
  48
  49     @Override
  50     public UnsignedLong getGeneration() {
  51         return verifyNotNull(generation);
  52     }
  53
  54     @Override
  55     public BindingDOMCodecServices getService() {
  56         return verifyNotNull(delegate);
  57     }
  58
  59     @Activate
  60     void activate(final Map<String, ?> properties) {
  61         generation = (UnsignedLong) verifyNotNull(properties.get(GENERATION));
  62         delegate = (BindingDOMCodecServices) verifyNotNull(properties.get(DELEGATE));
  63         LOG.info("Binding/DOM Codec generation {} activated", generation);
  64     }
  65
  66     @Deactivate
  67     void deactivate() {
  68         delegate = null;
  69         LOG.info("Binding/DOM Codec generation {} deactivated", generation);
  70     }
  71
  72     static Dictionary<String, ?> props(final @NonNull UnsignedLong generation, final @NonNull Integer ranking,
  73             final @NonNull BindingDOMCodecServices delegate) {
  74         return FrameworkUtil.asDictionary(Map.of(
  75             Constants.SERVICE_RANKING, ranking,
  76             GENERATION, generation,
  77             DELEGATE, delegate));
  78     }
  79 }