netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/sal/tx/WriteRunningTx.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
   9 package org.opendaylight.netconf.sal.connect.netconf.sal.tx;
  10
  11 import com.google.common.base.Function;
  12 import com.google.common.base.Optional;
  13 import com.google.common.util.concurrent.CheckedFuture;
  14 import com.google.common.util.concurrent.Futures;
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18 import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
  19 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  21 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfBaseOps;
  22 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfRpcFutureCallback;
  23 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  24 import org.opendaylight.yangtools.yang.common.RpcResult;
  25 import org.opendaylight.yangtools.yang.data.api.ModifyAction;
  26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  27 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
  28 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 /**
  33  * Tx implementation for netconf devices that support only writable-running with no candidate
  34  * The sequence goes as:
  35  * <ol>
  36  *   <li>Lock running datastore on tx construction
  37  *     <ul>
  38  *       <li> Lock has to succeed, if it does not, transaction is failed</li>
  39  *     </ul>
  40  *   </li>
  41  *   <li>Edit-config in running N times
  42  *     <ul>
  43  *       <li>If any issue occurs during edit, datastore is unlocked and an exception is thrown</li>
  44  *     </ul>
  45  *   </li>
  46  *   <li>Unlock running datastore on tx commit</li>
  47  * </ol>
  48  */
  49 public class WriteRunningTx extends AbstractWriteTx {
  50
  51     private static final Logger LOG  = LoggerFactory.getLogger(WriteRunningTx.class);
  52     private final List<Change> changes = new ArrayList<>();
  53
  54     public WriteRunningTx(final RemoteDeviceId id, final NetconfBaseOps netOps,
  55                           final boolean rollbackSupport) {
  56         super(netOps, id, rollbackSupport);
  57     }
  58
  59     @Override
  60     protected synchronized void init() {
  61         lock();
  62     }
  63
  64     private void lock() {
  65         resultsFutures.add(netOps.lockRunning(new NetconfRpcFutureCallback("Lock running", id)));
  66     }
  67
  68     @Override
  69     protected void cleanup() {
  70         unlock();
  71     }
  72
  73     @Override
  74     public synchronized CheckedFuture<Void, TransactionCommitFailedException> submit() {
  75         final ListenableFuture<Void> commmitFutureAsVoid = Futures.transform(commit(), new Function<RpcResult<TransactionStatus>, Void>() {
  76             @Override
  77             public Void apply(final RpcResult<TransactionStatus> input) {
  78                 return null;
  79             }
  80         });
  81
  82         return Futures.makeChecked(commmitFutureAsVoid, new Function<Exception, TransactionCommitFailedException>() {
  83             @Override
  84             public TransactionCommitFailedException apply(final Exception input) {
  85                 return new TransactionCommitFailedException("Submit of transaction " + getIdentifier() + " failed", input);
  86             }
  87         });
  88     }
  89
  90     @Override
  91     public synchronized ListenableFuture<RpcResult<TransactionStatus>> performCommit() {
  92         for (final Change change : changes) {
  93             resultsFutures.add(change.execute(id, netOps, rollbackSupport));
  94         }
  95         unlock();
  96         return resultsToTxStatus();
  97     }
  98
  99     @Override
 100     protected void editConfig(final YangInstanceIdentifier path,
 101                               final Optional<NormalizedNode<?, ?>> data,
 102                               final DataContainerChild<?, ?> editStructure,
 103                               final Optional<ModifyAction> defaultOperation,
 104                               final String operation) {
 105         changes.add(new Change(editStructure, defaultOperation));
 106     }
 107
 108     private void unlock() {
 109         netOps.unlockRunning(new NetconfRpcFutureCallback("Unlock running", id));
 110     }
 111
 112     private static class Change {
 113
 114         private final DataContainerChild<?, ?> editStructure;
 115         private final Optional<ModifyAction> defaultOperation;
 116
 117         private Change(final DataContainerChild<?, ?> editStructure, final Optional<ModifyAction> defaultOperation) {
 118             this.editStructure = editStructure;
 119             this.defaultOperation = defaultOperation;
 120         }
 121
 122         private ListenableFuture<DOMRpcResult> execute(final RemoteDeviceId id, final NetconfBaseOps netOps,
 123                                                        final boolean rollbackSupport) {
 124             final NetconfRpcFutureCallback editConfigCallback = new NetconfRpcFutureCallback("Edit running", id);
 125             if (defaultOperation.isPresent()) {
 126                 return netOps.editConfigRunning(editConfigCallback, editStructure, defaultOperation.get(), rollbackSupport);
 127             } else {
 128                 return netOps.editConfigRunning(editConfigCallback, editStructure, rollbackSupport);
 129             }
 130         }
 131     }
 132 }