binding/mdsal-binding-dom-codec-osgi/src/main/java/org/opendaylight/mdsal/binding/dom/codec/osgi/impl/SimpleBindingRuntimeContextService.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 static com.google.common.base.Preconditions.checkNotNull;
  11 import static com.google.common.base.Preconditions.checkState;
  12 import static com.google.common.base.Verify.verifyNotNull;
  13
  14 import com.google.common.util.concurrent.CheckedFuture;
  15 import javax.annotation.concurrent.GuardedBy;
  16 import org.opendaylight.mdsal.binding.dom.codec.osgi.BindingRuntimeContextListener;
  17 import org.opendaylight.mdsal.binding.dom.codec.osgi.BindingRuntimeContextService;
  18 import org.opendaylight.mdsal.binding.generator.api.ClassLoadingStrategy;
  19 import org.opendaylight.mdsal.binding.generator.util.BindingRuntimeContext;
  20 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  21 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceException;
  22 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  23 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  24 import org.opendaylight.yangtools.yang.model.repo.spi.SchemaSourceProvider;
  25 import org.osgi.framework.BundleContext;
  26 import org.osgi.framework.ServiceReference;
  27 import org.osgi.util.tracker.ServiceTracker;
  28
  29 @Deprecated
  30 final class SimpleBindingRuntimeContextService extends
  31         ServiceTracker<BindingRuntimeContextListener, BindingRuntimeContextListener>
  32         implements BindingRuntimeContextService {
  33     private final SchemaSourceProvider<YangTextSchemaSource> sourceProvider;
  34     private final ClassLoadingStrategy strategy;
  35     private final Object lock = new Object();
  36
  37     @GuardedBy("lock")
  38     private BindingRuntimeContext current;
  39
  40     SimpleBindingRuntimeContextService(final BundleContext context, final ClassLoadingStrategy strategy,
  41         final SchemaSourceProvider<YangTextSchemaSource> sourceProvider) {
  42         super(context, BindingRuntimeContextListener.class, null);
  43         this.sourceProvider = checkNotNull(sourceProvider);
  44         this.strategy = checkNotNull(strategy);
  45     }
  46
  47     @Override
  48     public CheckedFuture<? extends YangTextSchemaSource, SchemaSourceException> getSource(
  49             final SourceIdentifier sourceIdentifier) {
  50         return sourceProvider.getSource(sourceIdentifier);
  51     }
  52
  53     @Override
  54     public BindingRuntimeContext getBindingRuntimeContext() {
  55         synchronized (lock) {
  56             checkState(current != null, "Runtime context is not initialized yet");
  57             return current;
  58         }
  59     }
  60
  61     void updateBindingRuntimeContext(final SchemaContext schemaContext) {
  62         final BindingRuntimeContext next = verifyNotNull(BindingRuntimeContext.create(strategy, schemaContext));
  63
  64         final BindingRuntimeContextListener[] listeners;
  65         synchronized (lock) {
  66             current = next;
  67             listeners = this.getServices(new BindingRuntimeContextListener[0]);
  68         }
  69
  70         for (BindingRuntimeContextListener l : listeners) {
  71             l.onBindingRuntimeContextUpdated(next);
  72         }
  73     }
  74
  75     @Override
  76     public BindingRuntimeContextListener addingService(
  77             final ServiceReference<BindingRuntimeContextListener> reference) {
  78         final BindingRuntimeContextListener listener = super.addingService(reference);
  79
  80         synchronized (lock) {
  81             listener.onBindingRuntimeContextUpdated(current);
  82         }
  83
  84         return listener;
  85     }
  86 }