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