| /* |
| * 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. |
| */ |
| |
| namespace Apache.Ignite.ExamplesDll.Messaging |
| { |
| using System; |
| using System.Threading; |
| using Apache.Ignite.Core.Messaging; |
| |
| /// <summary> |
| /// Local message listener which signals countdown event on each received message. |
| /// </summary> |
| public class LocalListener : IMessageListener<int> |
| { |
| /** Countdown event. */ |
| private readonly CountdownEvent _countdown; |
| |
| /// <summary> |
| /// Initializes a new instance of the <see cref="LocalListener"/> class. |
| /// </summary> |
| /// <param name="countdown">The countdown event.</param> |
| public LocalListener(CountdownEvent countdown) |
| { |
| if (countdown == null) |
| throw new ArgumentNullException("countdown"); |
| |
| _countdown = countdown; |
| } |
| |
| /// <summary> |
| /// Receives a message and returns a value |
| /// indicating whether provided message and node id satisfy this predicate. |
| /// Returning false will unsubscribe this listener from future notifications. |
| /// </summary> |
| /// <param name="nodeId">Node identifier.</param> |
| /// <param name="message">Message.</param> |
| /// <returns>Value indicating whether provided message and node id satisfy this predicate.</returns> |
| public bool Invoke(Guid nodeId, int message) |
| { |
| _countdown.Signal(); |
| |
| return !_countdown.IsSet; |
| } |
| } |
| } |