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// 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 System.Globalization;
using Org.Apache.REEF.Driver.Evaluator;
using Org.Apache.REEF.Tang.Annotations;

namespace Org.Apache.REEF.Examples.AllHandlers
{
    /// <summary>
    /// Sample implementation of RunningTaskHandler
    /// </summary>
    public class HelloCompletedEvaluatorHandler : IObserver<ICompletedEvaluator>
    {
        [Inject]
        private HelloCompletedEvaluatorHandler()
        {
        }

        /// <summary>
        /// It is called when evaluator is completed. 
        /// </summary>
        /// <param name="completedEvaluator"></param>
        public void OnNext(ICompletedEvaluator completedEvaluator)
        {
            string messageStr = string.Format(
                CultureInfo.InvariantCulture,
                "HelloCompletedEvaluatorHandler: Evaluator [{0}] is done.",
                completedEvaluator.Id);
            Console.WriteLine(messageStr);
        }

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

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