opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/compat/BackwardsCompatibleDataBroker.java

   1 package org.opendaylight.controller.md.sal.dom.broker.impl.compat;
   2
   3 import javax.annotation.concurrent.ThreadSafe;
   4
   5 import org.opendaylight.controller.md.sal.common.api.RegistrationListener;
   6 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler;
   7 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandlerRegistration;
   8 import org.opendaylight.controller.md.sal.common.api.data.DataReader;
   9 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizer;
  10 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  11 import org.opendaylight.controller.sal.common.DataStoreIdentifier;
  12 import org.opendaylight.controller.sal.core.api.data.DataChangeListener;
  13 import org.opendaylight.controller.sal.core.api.data.DataModificationTransaction;
  14 import org.opendaylight.controller.sal.core.api.data.DataProviderService;
  15 import org.opendaylight.controller.sal.core.api.data.DataValidator;
  16 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  17 import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
  18 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  19 import org.opendaylight.yangtools.concepts.Registration;
  20 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  23 import org.opendaylight.yangtools.yang.model.api.SchemaContextListener;
  24 import org.opendaylight.yangtools.yang.model.api.SchemaServiceListener;
  25
  26 @ThreadSafe
  27 public class BackwardsCompatibleDataBroker implements DataProviderService {
  28
  29     private final DOMDataBroker backingBroker;
  30     private volatile DataNormalizer normalizer;
  31     private final ListenerRegistration<SchemaServiceListener> schemaReg;
  32
  33     public BackwardsCompatibleDataBroker(final DOMDataBroker newBiDataImpl, final SchemaService schemaService) {
  34         backingBroker = newBiDataImpl;
  35         schemaReg = schemaService.registerSchemaServiceListener(new SchemaListener());
  36     }
  37
  38     @Override
  39     public CompositeNode readConfigurationData(final YangInstanceIdentifier legacyPath) {
  40         final BackwardsCompatibleTransaction<?> tx = BackwardsCompatibleTransaction.readOnlyTransaction(backingBroker.newReadOnlyTransaction(),normalizer);
  41         try {
  42             return tx.readConfigurationData(legacyPath);
  43         } finally {
  44             tx.commit();
  45         }
  46     }
  47
  48     @Override
  49     public CompositeNode readOperationalData(final YangInstanceIdentifier legacyPath) {
  50         final BackwardsCompatibleTransaction<?> tx = BackwardsCompatibleTransaction.readOnlyTransaction(backingBroker.newReadOnlyTransaction(),normalizer);
  51         try {
  52             return tx.readOperationalData(legacyPath);
  53         } finally {
  54             tx.commit();
  55         }
  56     }
  57
  58     @Override
  59     public DataModificationTransaction beginTransaction() {
  60         return BackwardsCompatibleTransaction.readWriteTransaction(backingBroker.newReadWriteTransaction(), normalizer);
  61     }
  62
  63     @Override
  64     public ListenerRegistration<DataChangeListener> registerDataChangeListener(final YangInstanceIdentifier legacyPath,
  65             final DataChangeListener listener) {
  66         final YangInstanceIdentifier normalizedPath = normalizer.toNormalized(legacyPath);
  67
  68         final TranslatingListenerInvoker translatingCfgListener =
  69                 TranslatingListenerInvoker.createConfig(listener, normalizer);
  70         translatingCfgListener.register(backingBroker, normalizedPath);
  71
  72         final TranslatingListenerInvoker translatingOpListener =
  73                 TranslatingListenerInvoker.createOperational(listener, normalizer);
  74         translatingOpListener.register(backingBroker, normalizedPath);
  75
  76         return new DelegateListenerRegistration(translatingCfgListener, translatingOpListener, listener);
  77     }
  78
  79     @Override
  80     public Registration registerCommitHandler(
  81             final YangInstanceIdentifier path, final DataCommitHandler<YangInstanceIdentifier, CompositeNode> commitHandler) {
  82         // FIXME Do real forwarding
  83         return new AbstractObjectRegistration<DataCommitHandler<YangInstanceIdentifier,CompositeNode>>(commitHandler) {
  84             @Override
  85             protected void removeRegistration() {
  86                 // NOOP
  87             }
  88         };
  89     }
  90
  91     @Override
  92     public ListenerRegistration<RegistrationListener<DataCommitHandlerRegistration<YangInstanceIdentifier, CompositeNode>>> registerCommitHandlerListener(
  93             final RegistrationListener<DataCommitHandlerRegistration<YangInstanceIdentifier, CompositeNode>> commitHandlerListener) {
  94         return null;
  95     }
  96
  97     // Obsolete functionality
  98
  99     @Override
 100     public void addValidator(final DataStoreIdentifier store, final DataValidator validator) {
 101         throw new UnsupportedOperationException();
 102     }
 103
 104     @Override
 105     public void removeValidator(final DataStoreIdentifier store, final DataValidator validator) {
 106         throw new UnsupportedOperationException();
 107     }
 108
 109     @Override
 110     public void addRefresher(final DataStoreIdentifier store, final DataRefresher refresher) {
 111         throw new UnsupportedOperationException();
 112     }
 113
 114     @Override
 115     public void removeRefresher(final DataStoreIdentifier store, final DataRefresher refresher) {
 116         throw new UnsupportedOperationException();
 117     }
 118
 119     @Override
 120     public Registration registerConfigurationReader(
 121             final YangInstanceIdentifier path, final DataReader<YangInstanceIdentifier, CompositeNode> reader) {
 122         throw new UnsupportedOperationException("Data Reader contract is not supported.");
 123     }
 124
 125     @Override
 126     public Registration registerOperationalReader(
 127             final YangInstanceIdentifier path, final DataReader<YangInstanceIdentifier, CompositeNode> reader) {
 128         throw new UnsupportedOperationException("Data Reader contract is not supported.");
 129     }
 130
 131     private static class DelegateListenerRegistration implements ListenerRegistration<DataChangeListener> {
 132         private final TranslatingListenerInvoker translatingCfgListener;
 133         private final TranslatingListenerInvoker translatingOpListener;
 134         private final DataChangeListener listener;
 135
 136         public DelegateListenerRegistration(final TranslatingListenerInvoker translatingCfgListener, final TranslatingListenerInvoker translatingOpListener, final DataChangeListener listener) {
 137             this.translatingCfgListener = translatingCfgListener;
 138             this.translatingOpListener = translatingOpListener;
 139             this.listener = listener;
 140         }
 141
 142         @Override
 143         public void close() {
 144             translatingCfgListener.close();
 145             translatingOpListener.close();
 146         }
 147
 148         @Override
 149         public DataChangeListener getInstance() {
 150             return listener;
 151         }
 152     }
 153
 154     private class SchemaListener implements SchemaContextListener {
 155
 156         @Override
 157         public void onGlobalContextUpdated(final SchemaContext ctx) {
 158             normalizer = new DataNormalizer(ctx);
 159         }
 160
 161     }
 162 }