opendaylight/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 com.google.common.base.Function;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  14 import org.opendaylight.netconf.api.NetconfDocumentedException;
  15 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfBaseOps;
  16 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfRpcFutureCallback;
  17 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 /**
  22  * Tx implementation for netconf devices that support only candidate datastore and writable running
  23  * The sequence goes exactly as with only candidate supported, with one addition:
  24  * <ul>
  25  *     <li>Running datastore is locked as the first thing and this lock has to succeed</li>
  26  * </ul>
  27  */
  28 public class WriteCandidateRunningTx extends WriteCandidateTx {
  29
  30     private static final Logger LOG  = LoggerFactory.getLogger(WriteCandidateRunningTx.class);
  31
  32     public WriteCandidateRunningTx(final RemoteDeviceId id, final NetconfBaseOps netOps, final boolean rollbackSupport, final long requestTimeoutMillis) {
  33         super(id, netOps, rollbackSupport, requestTimeoutMillis);
  34     }
  35
  36     @Override
  37     protected synchronized void init() {
  38         lockRunning();
  39         super.init();
  40     }
  41
  42     @Override
  43     protected void cleanupOnSuccess() {
  44         super.cleanupOnSuccess();
  45         unlockRunning();
  46     }
  47
  48     private void lockRunning() {
  49         final String operation = "Lock Running";
  50         try {
  51             invokeBlocking(operation, new Function<NetconfBaseOps, ListenableFuture<DOMRpcResult>>() {
  52                 @Override
  53                 public ListenableFuture<DOMRpcResult> apply(final NetconfBaseOps input) {
  54                     return perfomRequestWithTimeout(operation, input.lockRunning(new NetconfRpcFutureCallback(operation, id)));
  55
  56                 }
  57             });
  58         } catch (final NetconfDocumentedException e) {
  59             LOG.warn("{}: Failed to lock running. Failed to initialize transaction", id, e);
  60             finished = true;
  61             throw new RuntimeException(id + ": Failed to lock running. Failed to initialize transaction", e);
  62         }
  63     }
  64
  65     /**
  66      * This has to be non blocking since it is called from a callback on commit and its netty threadpool that is really sensitive to blocking calls
  67      */
  68     private void unlockRunning() {
  69         netOps.unlockRunning(new NetconfRpcFutureCallback("Unlock running", id));
  70     }
  71 }