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

   1 /*
   2  * Copyright (c) 2015 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;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.collect.ImmutableSet;
  12 import com.google.common.util.concurrent.CheckedFuture;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import java.util.ArrayList;
  16 import java.util.List;
  17 import java.util.Map;
  18 import java.util.Map.Entry;
  19 import java.util.Set;
  20 import java.util.concurrent.atomic.AtomicLong;
  21 import javax.annotation.concurrent.GuardedBy;
  22 import javax.annotation.concurrent.NotThreadSafe;
  23 import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
  24 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  25 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  26 import org.opendaylight.controller.md.sal.common.impl.service.AbstractDataTransaction;
  27 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
  28 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  29 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
  30 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  31 import org.opendaylight.yangtools.yang.common.RpcResult;
  32 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  33 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 @NotThreadSafe
  38 final class ShardedDOMDataWriteTransaction implements DOMDataWriteTransaction {
  39     private static final Logger LOG = LoggerFactory.getLogger(ShardedDOMDataWriteTransaction.class);
  40     private static final AtomicLong COUNTER = new AtomicLong();
  41     private final Map<DOMDataTreeIdentifier, DOMStoreWriteTransaction> idToTransaction;
  42     private final ShardedDOMDataTreeProducer producer;
  43     private final String identifier;
  44     @GuardedBy("this")
  45     private boolean closed =  false;
  46
  47     ShardedDOMDataWriteTransaction(final ShardedDOMDataTreeProducer producer, final Map<DOMDataTreeIdentifier, DOMStoreWriteTransaction> idToTransaction) {
  48         this.producer = Preconditions.checkNotNull(producer);
  49         this.idToTransaction = Preconditions.checkNotNull(idToTransaction);
  50         this.identifier = "SHARDED-DOM-" + COUNTER.getAndIncrement();
  51     }
  52
  53     // FIXME: use atomic operations
  54     @GuardedBy("this")
  55     private DOMStoreWriteTransaction lookup(final LogicalDatastoreType store, final YangInstanceIdentifier path) {
  56         final DOMDataTreeIdentifier id = new DOMDataTreeIdentifier(store, path);
  57
  58         for (Entry<DOMDataTreeIdentifier, DOMStoreWriteTransaction> e : idToTransaction.entrySet()) {
  59             if (e.getKey().contains(id)) {
  60                 return e.getValue();
  61             }
  62         }
  63
  64         throw new IllegalArgumentException(String.format("Path %s is not acessible from transaction %s", id, this));
  65     }
  66
  67     @Override
  68     public String getIdentifier() {
  69         return identifier;
  70     }
  71
  72     @Override
  73     public synchronized boolean cancel() {
  74         if (closed) {
  75             return false;
  76         }
  77
  78         LOG.debug("Cancelling transaction {}", identifier);
  79         for (DOMStoreWriteTransaction tx : ImmutableSet.copyOf(idToTransaction.values())) {
  80             tx.close();
  81         }
  82
  83         closed = true;
  84         producer.cancelTransaction(this);
  85         return true;
  86     }
  87
  88     @Override
  89     public synchronized CheckedFuture<Void, TransactionCommitFailedException> submit() {
  90         Preconditions.checkState(!closed, "Transaction %s is already closed", identifier);
  91
  92         final Set<DOMStoreWriteTransaction> txns = ImmutableSet.copyOf(idToTransaction.values());
  93         final List<DOMStoreThreePhaseCommitCohort> cohorts = new ArrayList<>(txns.size());
  94         for (DOMStoreWriteTransaction tx : txns) {
  95             cohorts.add(tx.ready());
  96         }
  97
  98         try {
  99             return Futures.immediateCheckedFuture(new CommitCoordinationTask(this, cohorts, null).call());
 100         } catch (TransactionCommitFailedException e) {
 101             return Futures.immediateFailedCheckedFuture(e);
 102         }
 103     }
 104
 105     @Override
 106     @Deprecated
 107     public ListenableFuture<RpcResult<TransactionStatus>> commit() {
 108         return AbstractDataTransaction.convertToLegacyCommitFuture(submit());
 109     }
 110
 111     @Override
 112     public synchronized void delete(final LogicalDatastoreType store, final YangInstanceIdentifier path) {
 113         lookup(store, path).delete(path);
 114     }
 115
 116     @Override
 117     public synchronized void put(final LogicalDatastoreType store, final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
 118         lookup(store, path).write(path, data);
 119     }
 120
 121     @Override
 122     public synchronized void merge(final LogicalDatastoreType store, final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
 123         lookup(store, path).merge(path, data);
 124     }
 125 }