opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/BindingTranslatedTransactionChain.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. 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.controller.md.sal.binding.impl;
   9
  10 import java.util.Map;
  11 import java.util.WeakHashMap;
  12
  13 import javax.annotation.concurrent.GuardedBy;
  14
  15 import org.opendaylight.controller.md.sal.binding.api.BindingTransactionChain;
  16 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  17 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  18 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  19 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  20 import org.opendaylight.controller.md.sal.common.api.data.TransactionChain;
  21 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  23 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  24 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
  25 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  26 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  27 import org.opendaylight.yangtools.concepts.Delegator;
  28
  29 import com.google.common.base.Preconditions;
  30
  31 class BindingTranslatedTransactionChain implements BindingTransactionChain, Delegator<DOMTransactionChain> {
  32
  33     private final DOMTransactionChain delegate;
  34
  35     @GuardedBy("this")
  36     private final Map<AsyncTransaction<?, ?>, AsyncTransaction<?, ?>> delegateTxToBindingTx = new WeakHashMap<>();
  37     private final BindingToNormalizedNodeCodec codec;
  38
  39     public BindingTranslatedTransactionChain(final DOMDataBroker chainFactory,
  40             final BindingToNormalizedNodeCodec codec, final TransactionChainListener listener) {
  41         Preconditions.checkNotNull(chainFactory, "DOM Transaction chain factory must not be null");
  42         this.delegate = chainFactory.createTransactionChain(new ListenerInvoker(listener));
  43         this.codec = codec;
  44     }
  45
  46     @Override
  47     public DOMTransactionChain getDelegate() {
  48         return delegate;
  49     }
  50
  51     @Override
  52     public ReadOnlyTransaction newReadOnlyTransaction() {
  53         DOMDataReadOnlyTransaction delegateTx = delegate.newReadOnlyTransaction();
  54         ReadOnlyTransaction bindingTx = new BindingDataReadTransactionImpl(delegateTx, codec);
  55         putDelegateToBinding(delegateTx, bindingTx);
  56         return bindingTx;
  57     }
  58
  59     @Override
  60     public ReadWriteTransaction newReadWriteTransaction() {
  61         DOMDataReadWriteTransaction delegateTx = delegate.newReadWriteTransaction();
  62         ReadWriteTransaction bindingTx = new BindingDataReadWriteTransactionImpl(delegateTx, codec);
  63         putDelegateToBinding(delegateTx, bindingTx);
  64         return bindingTx;
  65     }
  66
  67     @Override
  68     public WriteTransaction newWriteOnlyTransaction() {
  69         DOMDataWriteTransaction delegateTx = delegate.newWriteOnlyTransaction();
  70         WriteTransaction bindingTx = new BindingDataWriteTransactionImpl<>(delegateTx, codec);
  71         putDelegateToBinding(delegateTx, bindingTx);
  72         return bindingTx;
  73     }
  74
  75     @Override
  76     public void close() {
  77         delegate.close();
  78     }
  79
  80     private synchronized void putDelegateToBinding(final AsyncTransaction<?, ?> domTx,
  81             final AsyncTransaction<?, ?> bindingTx) {
  82         final Object previous = delegateTxToBindingTx.put(domTx, bindingTx);
  83         Preconditions.checkState(previous == null, "DOM Transaction %s has already associated binding transation %s",domTx,previous);
  84     }
  85
  86     private synchronized AsyncTransaction<?, ?> getBindingTransaction(final AsyncTransaction<?, ?> transaction) {
  87         return delegateTxToBindingTx.get(transaction);
  88     }
  89
  90     private final class ListenerInvoker implements TransactionChainListener {
  91
  92         private final TransactionChainListener listener;
  93
  94         public ListenerInvoker(final TransactionChainListener listener) {
  95             this.listener = Preconditions.checkNotNull(listener, "Listener must not be null.");
  96         }
  97
  98         @Override
  99         public void onTransactionChainFailed(final TransactionChain<?, ?> chain,
 100                 final AsyncTransaction<?, ?> transaction, final Throwable cause) {
 101             Preconditions.checkState(delegate.equals(chain),
 102                     "Illegal state - listener for %s was invoked for incorrect chain %s.", delegate, chain);
 103             AsyncTransaction<?, ?> bindingTx = getBindingTransaction(transaction);
 104             listener.onTransactionChainFailed(chain, bindingTx, cause);
 105         }
 106
 107         @Override
 108         public void onTransactionChainSuccessful(final TransactionChain<?, ?> chain) {
 109             Preconditions.checkState(delegate.equals(chain),
 110                     "Illegal state - listener for %s was invoked for incorrect chain %s.", delegate, chain);
 111             listener.onTransactionChainSuccessful(BindingTranslatedTransactionChain.this);
 112         }
 113     }
 114
 115 }