dom/mdsal-dom-schema-osgi/src/main/java/org/opendaylight/mdsal/dom/schema/osgi/impl/KarafYangModuleInfoRegistry.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 java.util.Objects.requireNonNull;
  11
  12 import java.util.List;
  13 import org.apache.karaf.features.DeploymentEvent;
  14 import org.apache.karaf.features.DeploymentListener;
  15 import org.apache.karaf.features.FeaturesService;
  16 import org.eclipse.jdt.annotation.NonNull;
  17 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  18 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 final class KarafYangModuleInfoRegistry extends YangModuleInfoRegistry implements DeploymentListener {
  23     private static final Logger LOG = LoggerFactory.getLogger(KarafYangModuleInfoRegistry.class);
  24
  25     private final RegularYangModuleInfoRegistry delegate;
  26
  27     private boolean scannerEnabled = false;
  28     private boolean updatesEnabled = false;
  29
  30     private KarafYangModuleInfoRegistry(final RegularYangModuleInfoRegistry delegate) {
  31         this.delegate = requireNonNull(delegate);
  32     }
  33
  34     static @NonNull KarafYangModuleInfoRegistry create(final FeaturesService features,
  35             final RegularYangModuleInfoRegistry delegate) {
  36         final KarafYangModuleInfoRegistry ret = new KarafYangModuleInfoRegistry(delegate);
  37         features.registerListener(ret);
  38         return ret;
  39     }
  40
  41     @Override
  42     public synchronized void deploymentEvent(final DeploymentEvent event) {
  43         LOG.debug("Features service indicates {}", event);
  44         switch (event) {
  45             case DEPLOYMENT_STARTED:
  46             case BUNDLES_INSTALLED:
  47                 updatesEnabled = false;
  48                 LOG.debug("BindingRuntimeContext updates disabled");
  49                 break;
  50             case BUNDLES_RESOLVED:
  51             case DEPLOYMENT_FINISHED:
  52             default:
  53                 updatesEnabled = true;
  54                 LOG.debug("BindingRuntimeContext updates enabled");
  55                 if (scannerEnabled) {
  56                     delegate.enableScannerAndUpdate();
  57                 }
  58         }
  59     }
  60
  61     @Override
  62     synchronized void scannerUpdate() {
  63         if (updatesEnabled) {
  64             delegate.scannerUpdate();
  65         }
  66     }
  67
  68     @Override
  69     synchronized void enableScannerAndUpdate() {
  70         scannerEnabled = true;
  71         if (updatesEnabled) {
  72             delegate.enableScannerAndUpdate();
  73
  74         }
  75     }
  76
  77     @Override
  78     List<ObjectRegistration<YangModuleInfo>> registerInfos(final List<YangModuleInfo> infos) {
  79         return delegate.registerInfos(infos);
  80     }
  81
  82     @Override
  83     synchronized void close() {
  84         delegate.close();
  85     }
  86
  87     @Override
  88     synchronized void scannerShutdown() {
  89         scannerEnabled = false;
  90         delegate.scannerShutdown();
  91     }
  92 }