opendaylight/md-sal/sal-netconf-connector/src/main/java/org/opendaylight/controller/sal/connect/netconf/sal/NetconfDeviceCommitHandler.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.connect.netconf.sal;
   9
  10 import java.util.concurrent.ExecutionException;
  11
  12 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler;
  13 import org.opendaylight.controller.md.sal.common.api.data.DataModification;
  14 import org.opendaylight.controller.sal.connect.util.RemoteDeviceId;
  15 import org.opendaylight.controller.sal.core.api.RpcImplementation;
  16 import org.opendaylight.yangtools.yang.common.RpcError;
  17 import org.opendaylight.yangtools.yang.common.RpcResult;
  18 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  19 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  20 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public final class NetconfDeviceCommitHandler implements DataCommitHandler<InstanceIdentifier,CompositeNode> {
  25
  26     private static final Logger logger= LoggerFactory.getLogger(NetconfDeviceCommitHandler.class);
  27
  28     private final RemoteDeviceId id;
  29     private final RpcImplementation rpc;
  30     private final boolean rollbackSupported;
  31
  32     public NetconfDeviceCommitHandler(final RemoteDeviceId id, final RpcImplementation rpc, final boolean rollbackSupported) {
  33         this.id = id;
  34         this.rpc = rpc;
  35         this.rollbackSupported = rollbackSupported;
  36     }
  37
  38     @Override
  39     public DataCommitTransaction<InstanceIdentifier, CompositeNode> requestCommit(
  40             final DataModification<InstanceIdentifier, CompositeNode> modification) {
  41
  42         final NetconfDeviceTwoPhaseCommitTransaction twoPhaseCommit = new NetconfDeviceTwoPhaseCommitTransaction(id, rpc,
  43                 modification, true, rollbackSupported);
  44         try {
  45             twoPhaseCommit.prepare();
  46         } catch (final InterruptedException e) {
  47             Thread.currentThread().interrupt();
  48             throw new RuntimeException(id + ": Interrupted while waiting for response", e);
  49         } catch (final ExecutionException e) {
  50             logger.warn("{}: Error executing pre commit operation on remote device", id, e);
  51             return new FailingTransaction(twoPhaseCommit, e);
  52         }
  53
  54         return twoPhaseCommit;
  55     }
  56
  57     /**
  58      * Always fail commit transaction that rolls back delegate transaction afterwards
  59      */
  60     private class FailingTransaction implements DataCommitTransaction<InstanceIdentifier, CompositeNode> {
  61         private final NetconfDeviceTwoPhaseCommitTransaction twoPhaseCommit;
  62         private final ExecutionException e;
  63
  64         public FailingTransaction(final NetconfDeviceTwoPhaseCommitTransaction twoPhaseCommit, final ExecutionException e) {
  65             this.twoPhaseCommit = twoPhaseCommit;
  66             this.e = e;
  67         }
  68
  69         @Override
  70         public DataModification<InstanceIdentifier, CompositeNode> getModification() {
  71             return twoPhaseCommit.getModification();
  72         }
  73
  74         @Override
  75         public RpcResult<Void> finish() throws IllegalStateException {
  76             return RpcResultBuilder.<Void>failed().withError( RpcError.ErrorType.APPLICATION,
  77                     id + ": Unexpected operation error during pre-commit operations", e ).build();
  78         }
  79
  80         @Override
  81         public RpcResult<Void> rollback() throws IllegalStateException {
  82             return twoPhaseCommit.rollback();
  83         }
  84     }
  85 }