binding/mdsal-binding-dom-codec-osgi/src/main/java/org/opendaylight/mdsal/binding/dom/codec/osgi/impl/BindingClassLoadingStrategy.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.codec.osgi.impl;
   9
  10 import org.opendaylight.binding.runtime.api.ClassLoadingStrategy;
  11 import org.opendaylight.binding.runtime.spi.GeneratedClassLoadingStrategy;
  12 import org.opendaylight.binding.runtime.spi.ModuleInfoBackedContext;
  13 import org.opendaylight.yangtools.yang.model.parser.api.YangParserFactory;
  14 import org.osgi.service.component.ComponentContext;
  15 import org.osgi.service.component.annotations.Activate;
  16 import org.osgi.service.component.annotations.Component;
  17 import org.osgi.service.component.annotations.Deactivate;
  18 import org.osgi.service.component.annotations.Reference;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 @Component(immediate = true)
  23 public final class BindingClassLoadingStrategy implements ClassLoadingStrategy {
  24     private static final Logger LOG = LoggerFactory.getLogger(BindingClassLoadingStrategy.class);
  25
  26     @Reference
  27     YangParserFactory factory = null;
  28
  29     private ModuleInfoBundleTracker bundleTracker = null;
  30     private ModuleInfoBackedContext moduleInfoBackedContext = null;
  31
  32     @Activate
  33     void activate(final ComponentContext ctx) {
  34         LOG.info("Binding-DOM codec starting");
  35
  36         moduleInfoBackedContext = ModuleInfoBackedContext.create("binding-dom-codec", factory,
  37             // FIXME: This is the fallback strategy, it should not be needed
  38             GeneratedClassLoadingStrategy.getTCCLClassLoadingStrategy());
  39
  40         final OsgiModuleInfoRegistry registry = new OsgiModuleInfoRegistry(moduleInfoBackedContext,
  41                 moduleInfoBackedContext);
  42
  43         LOG.debug("Starting Binding-DOM codec bundle tracker");
  44         bundleTracker = new ModuleInfoBundleTracker(ctx.getBundleContext(), registry);
  45         bundleTracker.open();
  46
  47         LOG.info("Binding-DOM codec started");
  48     }
  49
  50     @Deactivate
  51     void deactivate() {
  52         LOG.info("Binding-DOM codec stopping");
  53         LOG.debug("Stopping Binding-DOM codec bundle tracker");
  54         bundleTracker.close();
  55         moduleInfoBackedContext = null;
  56         bundleTracker = null;
  57         LOG.info("Binding-DOM codec stopped");
  58     }
  59
  60     @Override
  61     public Class<?> loadClass(final String fullyQualifiedName) throws ClassNotFoundException {
  62         return moduleInfoBackedContext.loadClass(fullyQualifiedName);
  63     }
  64 }