opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/sal/dom/broker/impl/HashMapDataStore.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.sal.dom.broker.impl;
   9
  10 import java.util.HashSet;
  11 import java.util.Map;
  12 import java.util.Set;
  13 import java.util.concurrent.ConcurrentHashMap;
  14
  15 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler;
  16 import org.opendaylight.controller.md.sal.common.api.data.DataModification;
  17 import org.opendaylight.controller.sal.core.api.data.DataStore;
  18 import org.opendaylight.yangtools.yang.common.RpcResult;
  19 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  20 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  21 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public final class HashMapDataStore implements DataStore, AutoCloseable {
  26     private static final Logger LOG = LoggerFactory
  27             .getLogger(HashMapDataStore.class);
  28
  29     private final Map<InstanceIdentifier, CompositeNode> configuration = new ConcurrentHashMap<InstanceIdentifier, CompositeNode>();
  30     private final Map<InstanceIdentifier, CompositeNode> operational = new ConcurrentHashMap<InstanceIdentifier, CompositeNode>();
  31
  32     @Override
  33     public boolean containsConfigurationPath(final InstanceIdentifier path) {
  34         return configuration.containsKey(path);
  35     }
  36
  37     @Override
  38     public boolean containsOperationalPath(final InstanceIdentifier path) {
  39         return operational.containsKey(path);
  40     }
  41
  42     @Override
  43     public Iterable<InstanceIdentifier> getStoredConfigurationPaths() {
  44         return configuration.keySet();
  45     }
  46
  47     @Override
  48     public Iterable<InstanceIdentifier> getStoredOperationalPaths() {
  49         return operational.keySet();
  50     }
  51
  52     @Override
  53     public CompositeNode readConfigurationData(final InstanceIdentifier path) {
  54         LOG.trace("Reading configuration path {}", path);
  55         return configuration.get(path);
  56     }
  57
  58     @Override
  59     public CompositeNode readOperationalData(InstanceIdentifier path) {
  60         LOG.trace("Reading operational path {}", path);
  61         return operational.get(path);
  62     }
  63
  64     @Override
  65     public DataCommitHandler.DataCommitTransaction<InstanceIdentifier, CompositeNode> requestCommit(
  66             final DataModification<InstanceIdentifier, CompositeNode> modification) {
  67         return new HashMapDataStoreTransaction(modification, this);
  68     }
  69
  70     public RpcResult<Void> rollback(HashMapDataStoreTransaction transaction) {
  71         return RpcResultBuilder.<Void> success().build();
  72     }
  73
  74     public RpcResult<Void> finish(HashMapDataStoreTransaction transaction) {
  75         final DataModification<InstanceIdentifier, CompositeNode> modification = transaction
  76                 .getModification();
  77         for (final InstanceIdentifier removal : modification
  78                 .getRemovedConfigurationData()) {
  79             LOG.trace("Removing configuration path {}", removal);
  80             remove(configuration, removal);
  81         }
  82         for (final InstanceIdentifier removal : modification
  83                 .getRemovedOperationalData()) {
  84             LOG.trace("Removing operational path {}", removal);
  85             remove(operational, removal);
  86         }
  87         if (LOG.isTraceEnabled()) {
  88             for (final InstanceIdentifier a : modification
  89                     .getUpdatedConfigurationData().keySet()) {
  90                 LOG.trace("Adding configuration path {}", a);
  91             }
  92             for (final InstanceIdentifier a : modification
  93                     .getUpdatedOperationalData().keySet()) {
  94                 LOG.trace("Adding operational path {}", a);
  95             }
  96         }
  97         configuration.putAll(modification.getUpdatedConfigurationData());
  98         operational.putAll(modification.getUpdatedOperationalData());
  99
 100         return RpcResultBuilder.<Void> success().build();
 101     }
 102
 103     public void remove(final Map<InstanceIdentifier, CompositeNode> map,
 104             final InstanceIdentifier identifier) {
 105         Set<InstanceIdentifier> affected = new HashSet<InstanceIdentifier>();
 106         for (final InstanceIdentifier path : map.keySet()) {
 107             if (identifier.contains(path)) {
 108                 affected.add(path);
 109             }
 110         }
 111         for (final InstanceIdentifier pathToRemove : affected) {
 112             LOG.trace("Removed path {}", pathToRemove);
 113             map.remove(pathToRemove);
 114         }
 115     }
 116
 117     @Override
 118     public void close() {
 119         // NOOP
 120     }
 121 }