binding/mdsal-binding-dom-codec-osgi/src/main/java/org/opendaylight/mdsal/binding/dom/codec/osgi/impl/Activator.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, 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 java.util.ArrayList;
  11 import java.util.Collection;
  12 import java.util.List;
  13 import org.opendaylight.mdsal.binding.dom.codec.osgi.BindingRuntimeContextService;
  14 import org.opendaylight.mdsal.binding.generator.api.ClassLoadingStrategy;
  15 import org.opendaylight.mdsal.binding.generator.impl.ModuleInfoBackedContext;
  16 import org.opendaylight.yangtools.concepts.ObjectRegistration;
  17 import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
  18 import org.osgi.framework.Bundle;
  19 import org.osgi.framework.BundleActivator;
  20 import org.osgi.framework.BundleContext;
  21 import org.osgi.framework.ServiceRegistration;
  22 import org.osgi.util.tracker.BundleTracker;
  23
  24 public final class Activator implements BundleActivator {
  25     private final List<ServiceRegistration<?>> registrations = new ArrayList<>(2);
  26
  27     private BundleTracker<Collection<ObjectRegistration<YangModuleInfo>>> moduleInfoResolvedBundleTracker;
  28     private SimpleBindingRuntimeContextService service;
  29
  30     @Override
  31     public void start(final BundleContext context) {
  32         // XXX: this will use thread-context class loader, which is probably appropriate
  33         final ModuleInfoBackedContext moduleInfoBackedContext = ModuleInfoBackedContext.create();
  34
  35         service = new SimpleBindingRuntimeContextService(context, moduleInfoBackedContext, moduleInfoBackedContext);
  36
  37         final OsgiModuleInfoRegistry registry = new OsgiModuleInfoRegistry(moduleInfoBackedContext,
  38                 moduleInfoBackedContext, service);
  39
  40         final ModuleInfoBundleTracker moduleInfoTracker = new ModuleInfoBundleTracker(registry);
  41         moduleInfoResolvedBundleTracker = new BundleTracker<>(context, Bundle.RESOLVED | Bundle.STARTING
  42                 | Bundle.STOPPING | Bundle.ACTIVE, moduleInfoTracker);
  43         moduleInfoResolvedBundleTracker.open();
  44         moduleInfoTracker.finishStart();
  45
  46         service.open();
  47         registrations.add(context.registerService(BindingRuntimeContextService.class, service, null));
  48         registrations.add(context.registerService(ClassLoadingStrategy.class, moduleInfoBackedContext, null));
  49     }
  50
  51     @Override
  52     public void stop(final BundleContext context) {
  53         moduleInfoResolvedBundleTracker.close();
  54         service.close();
  55         registrations.forEach(ServiceRegistration::unregister);
  56         registrations.clear();
  57     }
  58 }