dom/mdsal-dom-schema-osgi/src/main/java/org/opendaylight/mdsal/dom/schema/osgi/impl/OSGiModuleInfoSnapshotImpl.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.dom.schema.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.gaul.modernizer_maven_annotations.SuppressModernizer;
  20 import org.opendaylight.mdsal.binding.runtime.api.ModuleInfoSnapshot;
  21 import org.opendaylight.mdsal.dom.schema.osgi.ModelGenerationAware;
  22 import org.opendaylight.mdsal.dom.schema.osgi.OSGiModuleInfoSnapshot;
  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 @Beta
  31 @Component(factory = OSGiModuleInfoSnapshotImpl.FACTORY_NAME, service = OSGiModuleInfoSnapshot.class)
  32 public final class OSGiModuleInfoSnapshotImpl implements OSGiModuleInfoSnapshot {
  33     // OSGi DS Component Factory name
  34     static final String FACTORY_NAME = "org.opendaylight.mdsal.dom.schema.osgi.impl.OSGiEffectiveModelImpl";
  35
  36     // Keys to for activation properties
  37     @VisibleForTesting
  38     static final String GENERATION = "org.opendaylight.mdsal.dom.schema.osgi.impl.Generation";
  39     @VisibleForTesting
  40     static final String DELEGATE = "org.opendaylight.mdsal.dom.schema.osgi.impl.ModuleInfoSnapshot";
  41
  42     private static final Logger LOG = LoggerFactory.getLogger(OSGiModuleInfoSnapshotImpl.class);
  43
  44     private ModuleInfoSnapshot delegate;
  45     private UnsignedLong generation;
  46
  47     @Override
  48     public UnsignedLong getGeneration() {
  49         return verifyNotNull(generation);
  50     }
  51
  52     @Override
  53     public ModuleInfoSnapshot getService() {
  54         return verifyNotNull(delegate);
  55     }
  56
  57     @Activate
  58     void activate(final Map<String, ?> properties) {
  59         generation = (UnsignedLong) verifyNotNull(properties.get(GENERATION));
  60         delegate = (ModuleInfoSnapshot) verifyNotNull(properties.get(DELEGATE));
  61         LOG.info("EffectiveModelContext generation {} activated", generation);
  62     }
  63
  64     @Deactivate
  65     void deactivate() {
  66         delegate = null;
  67         LOG.info("EffectiveModelContext generation {} deactivated", generation);
  68     }
  69
  70     @SuppressModernizer
  71     static Dictionary<String, ?> props(final long generation, final ModuleInfoSnapshot delegate) {
  72         final Dictionary<String, Object> ret = new Hashtable<>(4);
  73         ret.put(Constants.SERVICE_RANKING, ModelGenerationAware.computeServiceRanking(generation));
  74         ret.put(GENERATION, UnsignedLong.fromLongBits(generation));
  75         ret.put(DELEGATE, requireNonNull(delegate));
  76         return ret;
  77     }
  78 }