binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/OSGiBlockingBindingNormalizer.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.adapter;
   9
  10 import static com.google.common.base.Verify.verifyNotNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import org.opendaylight.mdsal.binding.dom.codec.spi.BindingDOMCodecServices;
  14 import org.osgi.service.component.annotations.Activate;
  15 import org.osgi.service.component.annotations.Component;
  16 import org.osgi.service.component.annotations.Deactivate;
  17 import org.osgi.service.component.annotations.Reference;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 @Beta
  22 @Component(immediate = true, service = AdapterContext.class)
  23 public final class OSGiBlockingBindingNormalizer implements AdapterContext {
  24     private static final Logger LOG = LoggerFactory.getLogger(OSGiBlockingBindingNormalizer.class);
  25
  26     @Reference(updated = "update")
  27     volatile BindingDOMCodecServices codec = null;
  28
  29     private volatile CurrentAdapterSerializer serializer;
  30
  31     @Override
  32     public CurrentAdapterSerializer currentSerializer() {
  33         return verifyNotNull(serializer);
  34     }
  35
  36     @Activate
  37     void activate() {
  38         serializer = new CurrentAdapterSerializer(codec);
  39         LOG.info("Binding/DOM adapter activated");
  40     }
  41
  42     @Deactivate
  43     void deactivate() {
  44         serializer = null;
  45         LOG.info("Binding/DOM adapter deactivated");
  46     }
  47
  48     void update() {
  49         serializer = new CurrentAdapterSerializer(codec);
  50         LOG.info("Binding/DOM adapter updated");
  51     }
  52 }