opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/legacy/sharded/adapter/ShardedDOMDataBrokerDelegatingTransactionChain.java

   1 /*
   2  * Copyright (c) 2016 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.dom.broker.impl.legacy.sharded.adapter;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.base.Preconditions;
  13 import java.util.HashMap;
  14 import java.util.Map;
  15 import java.util.concurrent.atomic.AtomicLong;
  16 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  17 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  22 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadTransaction;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeTransaction;
  24 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
  25 import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
  26 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  27
  28 @Deprecated
  29 class ShardedDOMDataBrokerDelegatingTransactionChain implements DOMTransactionChain, DOMTransactionChainListener {
  30     private final Map<Object, AsyncTransaction<?, ?>> transactionMap = new HashMap<>();
  31     private final org.opendaylight.mdsal.dom.api.DOMTransactionChain txChainDelegate;
  32     private final SchemaContext schemaContext;
  33     private final TransactionChainListener txChainListener;
  34     private final Object txChainIdentifier;
  35     private final AtomicLong txNum = new AtomicLong();
  36
  37     ShardedDOMDataBrokerDelegatingTransactionChain(final Object txChainIdentifier,
  38                                                           final SchemaContext schemaContext,
  39                                                           final org.opendaylight.mdsal.dom.api.DOMDataBroker
  40                                                                   brokerDelegate,
  41                                                           final TransactionChainListener txChainListener) {
  42         requireNonNull(brokerDelegate);
  43         this.schemaContext = requireNonNull(schemaContext);
  44         this.txChainIdentifier = requireNonNull(txChainIdentifier);
  45         this.txChainListener = requireNonNull(txChainListener);
  46         this.txChainDelegate = brokerDelegate.createTransactionChain(this);
  47     }
  48
  49     @Override
  50     public DOMDataReadOnlyTransaction newReadOnlyTransaction() {
  51         final DOMDataTreeReadTransaction readTxDelegate = txChainDelegate.newReadOnlyTransaction();
  52         final DOMDataReadOnlyTransaction readTx = new ShardedDOMDataBrokerDelegatingReadTransaction(
  53                 newTransactionIdentifier(), readTxDelegate);
  54         transactionMap.put(readTxDelegate.getIdentifier(), readTx);
  55
  56         return readTx;
  57     }
  58
  59     @Override
  60     public DOMDataReadWriteTransaction newReadWriteTransaction() {
  61         final Object readWriteTxId = newTransactionIdentifier();
  62         final DOMDataTreeReadTransaction readTxDelegate = txChainDelegate.newReadOnlyTransaction();
  63         final DOMDataReadOnlyTransaction readTx = new ShardedDOMDataBrokerDelegatingReadTransaction(readWriteTxId,
  64                                                                                                     readTxDelegate);
  65
  66         final DOMDataTreeWriteTransaction writeTxDelegate = txChainDelegate.newWriteOnlyTransaction();
  67         final DOMDataWriteTransaction writeTx = new ShardedDOMDataBrokerDelegatingWriteTransaction(readWriteTxId,
  68                                                                                                    writeTxDelegate);
  69
  70         final DOMDataReadWriteTransaction readWriteTx = new ShardedDOMDataBrokerDelegatingReadWriteTransaction(
  71                 readWriteTxId, schemaContext, readTx, writeTx);
  72         transactionMap.put(readTxDelegate.getIdentifier(), readWriteTx);
  73         transactionMap.put(writeTxDelegate.getIdentifier(), readWriteTx);
  74
  75         return readWriteTx;
  76     }
  77
  78     @Override
  79     public DOMDataWriteTransaction newWriteOnlyTransaction() {
  80         final DOMDataTreeWriteTransaction writeTxDelegate = txChainDelegate.newWriteOnlyTransaction();
  81         final DOMDataWriteTransaction writeTx = new ShardedDOMDataBrokerDelegatingWriteTransaction(
  82                 newTransactionIdentifier(), writeTxDelegate);
  83         transactionMap.put(writeTxDelegate.getIdentifier(), writeTx);
  84
  85         return writeTx;
  86     }
  87
  88     @Override
  89     public void close() {
  90         txChainDelegate.close();
  91     }
  92
  93     @Override
  94     public void onTransactionChainFailed(final org.opendaylight.mdsal.dom.api.DOMTransactionChain chain,
  95             final DOMDataTreeTransaction transaction, final Throwable cause) {
  96         txChainListener.onTransactionChainFailed(this, transactionFromDelegate(transaction.getIdentifier()), cause);
  97     }
  98
  99     @Override
 100     public void onTransactionChainSuccessful(final org.opendaylight.mdsal.dom.api.DOMTransactionChain chain) {
 101         txChainListener.onTransactionChainSuccessful(this);
 102     }
 103
 104     private AsyncTransaction<?, ?> transactionFromDelegate(final Object delegateId) {
 105         Preconditions.checkState(transactionMap.containsKey(delegateId),
 106                                  "Delegate transaction {} is not present in transaction chain history", delegateId);
 107         return transactionMap.get(delegateId);
 108     }
 109
 110     private Object newTransactionIdentifier() {
 111         return "DOM-CHAIN-" + txChainIdentifier + "-" + txNum.getAndIncrement();
 112     }
 113 }