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.Registration;
  18 import org.opendaylight.yangtools.yang.binding.YangFeatureProvider;
  19 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 final class KarafYangModuleInfoRegistry extends YangModuleInfoRegistry implements DeploymentListener {
  24     private static final Logger LOG = LoggerFactory.getLogger(KarafYangModuleInfoRegistry.class);
  25
  26     private final RegularYangModuleInfoRegistry delegate;
  27
  28     private boolean scannerEnabled = false;
  29     private boolean updatesEnabled = false;
  30
  31     private KarafYangModuleInfoRegistry(final RegularYangModuleInfoRegistry delegate) {
  32         this.delegate = requireNonNull(delegate);
  33     }
  34
  35     static @NonNull KarafYangModuleInfoRegistry create(final FeaturesService features,
  36             final RegularYangModuleInfoRegistry delegate) {
  37         final KarafYangModuleInfoRegistry ret = new KarafYangModuleInfoRegistry(delegate);
  38         features.registerListener(ret);
  39         return ret;
  40     }
  41
  42     @Override
  43     public synchronized void deploymentEvent(final DeploymentEvent event) {
  44         LOG.debug("Features service indicates {}", event);
  45         switch (event) {
  46             case DEPLOYMENT_STARTED:
  47             case BUNDLES_INSTALLED:
  48                 updatesEnabled = false;
  49                 LOG.debug("BindingRuntimeContext updates disabled");
  50                 break;
  51             case BUNDLES_RESOLVED:
  52             case DEPLOYMENT_FINISHED:
  53             default:
  54                 updatesEnabled = true;
  55                 LOG.debug("BindingRuntimeContext updates enabled");
  56                 if (scannerEnabled) {
  57                     delegate.enableScannerAndUpdate();
  58                 }
  59         }
  60     }
  61
  62     @Override
  63     synchronized void scannerUpdate() {
  64         if (updatesEnabled) {
  65             delegate.scannerUpdate();
  66         }
  67     }
  68
  69     @Override
  70     synchronized void enableScannerAndUpdate() {
  71         scannerEnabled = true;
  72         if (updatesEnabled) {
  73             delegate.enableScannerAndUpdate();
  74         }
  75     }
  76
  77     @Override
  78     Registration registerBundle(final List<YangModuleInfo> moduleInfos,
  79             final List<YangFeatureProvider<?>> featureProviders) {
  80         return delegate.registerBundle(moduleInfos, featureProviders);
  81     }
  82
  83     @Override
  84     synchronized void close() {
  85         delegate.close();
  86     }
  87
  88     @Override
  89     synchronized void scannerShutdown() {
  90         scannerEnabled = false;
  91         delegate.scannerShutdown();
  92     }
  93 }