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 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.annotations.Beta;
  14 import com.google.common.annotations.VisibleForTesting;
  15 import com.google.common.primitives.UnsignedLong;
  16 import java.util.Dictionary;
  17 import java.util.Hashtable;
  18 import java.util.Map;
  19 import org.eclipse.jdt.annotation.NonNull;
  20 import org.gaul.modernizer_maven_annotations.SuppressModernizer;
  21 import org.opendaylight.mdsal.binding.dom.codec.osgi.OSGiBindingDOMCodecServices;
  22 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  23 import org.osgi.framework.Constants;
  24 import org.osgi.service.component.annotations.Activate;
  25 import org.osgi.service.component.annotations.Component;
  26 import org.osgi.service.component.annotations.Deactivate;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  * A Factory Component which implements {@link OSGiBindingDOMCodecServices}.
  32  */
  33 @Beta
  34 @Component(factory = OSGiBindingDOMCodecServicesImpl.FACTORY_NAME, service = OSGiBindingDOMCodecServices.class)
  35 public final class OSGiBindingDOMCodecServicesImpl implements OSGiBindingDOMCodecServices {
  36     // OSGi DS Component Factory name
  37     static final String FACTORY_NAME =
  38             "org.opendaylight.mdsal.binding.dom.codec.osgi.impl.OSGiBindingDOMCodecServicesImpl";
  39
  40     // Keys to for activation properties
  41     @VisibleForTesting
  42     static final String GENERATION = "org.opendaylight.mdsal.binding.dom.codec.osgi.impl.Generation";
  43     @VisibleForTesting
  44     static final String DELEGATE = "org.opendaylight.mdsal.binding.dom.codec.osgi.impl.BindingDOMCodecServices";
  45
  46     private static final Logger LOG = LoggerFactory.getLogger(OSGiBindingDOMCodecServicesImpl.class);
  47
  48     private BindingDOMCodecServices delegate;
  49     private UnsignedLong generation;
  50
  51     @Override
  52     public UnsignedLong getGeneration() {
  53         return verifyNotNull(generation);
  54     }
  55
  56     @Override
  57     public BindingDOMCodecServices getService() {
  58         return verifyNotNull(delegate);
  59     }
  60
  61     @Activate
  62     void activate(final Map<String, ?> properties) {
  63         generation = (UnsignedLong) verifyNotNull(properties.get(GENERATION));
  64         delegate = (BindingDOMCodecServices) verifyNotNull(properties.get(DELEGATE));
  65         LOG.info("Binding/DOM Codec generation {} activated", generation);
  66     }
  67
  68     @Deactivate
  69     void deactivate() {
  70         delegate = null;
  71         LOG.info("Binding/DOM Codec generation {} deactivated", generation);
  72     }
  73
  74     @SuppressModernizer
  75     static Dictionary<String, ?> props(final @NonNull UnsignedLong generation, final @NonNull Integer ranking,
  76             final BindingDOMCodecServices delegate) {
  77         final Dictionary<String, Object> ret = new Hashtable<>(4);
  78         ret.put(Constants.SERVICE_RANKING, ranking);
  79         ret.put(GENERATION, generation);
  80         ret.put(DELEGATE, requireNonNull(delegate));
  81         return ret;
  82     }
  83 }