netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/sal/tx/WriteCandidateRunningTx.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 org.opendaylight.netconf.sal.connect.netconf.util.NetconfBaseOps;
  12 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfRpcFutureCallback;
  13 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 /**
  18  * Tx implementation for netconf devices that support only candidate datastore and writable running.
  19  * The sequence goes exactly as with only candidate supported, with one addition:
  20  * <ul>
  21  *     <li>Running datastore is locked as the first thing and this lock has to succeed</li>
  22  * </ul>
  23  */
  24 public class WriteCandidateRunningTx extends WriteCandidateTx {
  25
  26     private static final Logger LOG  = LoggerFactory.getLogger(WriteCandidateRunningTx.class);
  27
  28     public WriteCandidateRunningTx(final RemoteDeviceId id, final NetconfBaseOps netOps,
  29                                    final boolean rollbackSupport) {
  30         super(id, netOps, rollbackSupport);
  31     }
  32
  33     @Override
  34     protected synchronized void init() {
  35         lockRunning();
  36         super.init();
  37     }
  38
  39     @Override
  40     protected void cleanupOnSuccess() {
  41         super.cleanupOnSuccess();
  42         unlockRunning();
  43     }
  44
  45     private void lockRunning() {
  46         resultsFutures.add(netOps.lockRunning(new NetconfRpcFutureCallback("Lock running", id)));
  47     }
  48
  49     /**
  50      * This has to be non blocking since it is called from a callback on commit
  51      * and its netty threadpool that is really sensitive to blocking calls.
  52      */
  53     private void unlockRunning() {
  54         netOps.unlockRunning(new NetconfRpcFutureCallback("Unlock running", id));
  55     }
  56 }