lang/cs/Org.Apache.REEF.Driver/Defaults/DefaultTaskFailureHandler.cs

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

using System;
using Org.Apache.REEF.Driver.Task;
using Org.Apache.REEF.Tang.Annotations;
using Org.Apache.REEF.Utilities.Logging;

namespace Org.Apache.REEF.Driver.Defaults
{
    /// <summary>
    /// Default event handler used for FailedTask: It crashes the driver.
    /// </summary>
    public class DefaultTaskFailureHandler : IObserver<IFailedTask>
    {
        private static readonly Logger Log = Logger.GetLogger(typeof(DefaultTaskFailureHandler));

        [Inject]
        public DefaultTaskFailureHandler()
        {
        }

        public void OnNext(IFailedTask value)
        {
            if (value.Data.IsPresent())
            {
                Log.Log(Level.Error, $"Task {value.Id} failed with exception", value.AsError());
                throw new InvalidOperationException(
                    $"Task {value.Id} has failed on {value.Message}, and no handler was bound for IFailedTask",
                    value.AsError());
            }

            Log.Log(Level.Error, "Task {0} failed with NO exception information", value.Id);
            throw new InvalidOperationException(
                $"Task {value.Id} has failed on {value.Message}, and no handler was bound for IFailedTask");
        }

        public void OnError(Exception error)
        {
            throw new NotImplementedException();
        }

        public void OnCompleted()
        {
            throw new NotImplementedException();
        }
    }
}