dom/mdsal-dom-broker/src/main/java/org/opendaylight/mdsal/dom/broker/ShardedDOMDataBrokerAdapter.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
   9 package org.opendaylight.mdsal.dom.broker;
  10
  11 import java.util.Collections;
  12 import java.util.Map;
  13 import java.util.concurrent.atomic.AtomicLong;
  14 import org.opendaylight.mdsal.common.api.TransactionChainListener;
  15 import org.opendaylight.mdsal.dom.api.DOMDataBroker;
  16 import org.opendaylight.mdsal.dom.api.DOMDataBrokerExtension;
  17 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadTransaction;
  18 import org.opendaylight.mdsal.dom.api.DOMDataTreeService;
  19 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
  20 import org.opendaylight.mdsal.dom.api.DOMTransactionChain;
  21
  22 public class ShardedDOMDataBrokerAdapter implements DOMDataBroker {
  23
  24     private final DOMDataTreeService service;
  25     private final AtomicLong txNum = new AtomicLong();
  26     private final AtomicLong chainNum = new AtomicLong();
  27
  28     public ShardedDOMDataBrokerAdapter(final DOMDataTreeService service) {
  29         this.service = service;
  30     }
  31
  32     @Override
  33     public Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> getSupportedExtensions() {
  34         return Collections.emptyMap();
  35     }
  36
  37     @Override
  38     public DOMDataTreeReadTransaction newReadOnlyTransaction() {
  39         return new ShardedDOMReadTransactionAdapter(newTransactionIdentifier(), service);
  40     }
  41
  42     @Override
  43     public DOMDataTreeWriteTransaction newWriteOnlyTransaction() {
  44         return new ShardedDOMWriteTransactionAdapter(newTransactionIdentifier(), service);
  45     }
  46
  47     @Override
  48     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
  49         return new ShardedDOMTransactionChainAdapter(newChainIdentifier(), service, listener);
  50     }
  51
  52     private Object newTransactionIdentifier() {
  53         return "DOM-" + txNum.getAndIncrement();
  54     }
  55
  56     private Object newChainIdentifier() {
  57         return "DOM-CHAIN-" + chainNum;
  58     }
  59
  60 }