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.common.util.RpcErrors;
  15 import org.opendaylight.controller.sal.connect.util.FailedRpcResult;
  16 import org.opendaylight.controller.sal.connect.util.RemoteDeviceId;
  17 import org.opendaylight.controller.sal.core.api.RpcImplementation;
  18 import org.opendaylight.yangtools.yang.common.RpcError;
  19 import org.opendaylight.yangtools.yang.common.RpcResult;
  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 NetconfDeviceCommitHandler implements DataCommitHandler<InstanceIdentifier,CompositeNode> {
  26
  27     private static final Logger logger= LoggerFactory.getLogger(NetconfDeviceCommitHandler.class);
  28
  29     private final RemoteDeviceId id;
  30     private final RpcImplementation rpc;
  31     private final boolean rollbackSupported;
  32
  33     public NetconfDeviceCommitHandler(final RemoteDeviceId id, final RpcImplementation rpc, final boolean rollbackSupported) {
  34         this.id = id;
  35         this.rpc = rpc;
  36         this.rollbackSupported = rollbackSupported;
  37     }
  38
  39     @Override
  40     public DataCommitTransaction<InstanceIdentifier, CompositeNode> requestCommit(
  41             final DataModification<InstanceIdentifier, CompositeNode> modification) {
  42
  43         final NetconfDeviceTwoPhaseCommitTransaction twoPhaseCommit = new NetconfDeviceTwoPhaseCommitTransaction(id, rpc,
  44                 modification, true, rollbackSupported);
  45         try {
  46             twoPhaseCommit.prepare();
  47         } catch (final InterruptedException e) {
  48             Thread.currentThread().interrupt();
  49             throw new RuntimeException(id + ": Interrupted while waiting for response", e);
  50         } catch (final ExecutionException e) {
  51             logger.warn("%s: Error executing pre commit operation on remote device", id, e);
  52             return new FailingTransaction(twoPhaseCommit, e);
  53         }
  54
  55         return twoPhaseCommit;
  56     }
  57
  58     /**
  59      * Always fail commit transaction that rolls back delegate transaction afterwards
  60      */
  61     private class FailingTransaction implements DataCommitTransaction<InstanceIdentifier, CompositeNode> {
  62         private final NetconfDeviceTwoPhaseCommitTransaction twoPhaseCommit;
  63         private final ExecutionException e;
  64
  65         public FailingTransaction(final NetconfDeviceTwoPhaseCommitTransaction twoPhaseCommit, final ExecutionException e) {
  66             this.twoPhaseCommit = twoPhaseCommit;
  67             this.e = e;
  68         }
  69
  70         @Override
  71         public DataModification<InstanceIdentifier, CompositeNode> getModification() {
  72             return twoPhaseCommit.getModification();
  73         }
  74
  75         @Override
  76         public RpcResult<Void> finish() throws IllegalStateException {
  77             return new FailedRpcResult<>(RpcErrors.getRpcError(null, null, null, RpcError.ErrorSeverity.ERROR,
  78                     id + ": Unexpected operation error during pre-commit operations", RpcError.ErrorType.APPLICATION, e));
  79         }
  80
  81         @Override
  82         public RpcResult<Void> rollback() throws IllegalStateException {
  83             return twoPhaseCommit.rollback();
  84         }
  85     }
  86 }