// Message handler factory class.// Copyright (C) 2009-2010 Lex Li// // Permission is hereby granted, free of charge, to any person obtaining a copy of this// software and associated documentation files (the "Software"), to deal in the Software// without restriction, including without limitation the rights to use, copy, modify, merge,// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons// to whom the Software is furnished to do so, subject to the following conditions://// The above copyright notice and this permission notice shall be included in all copies or// substantial portions of the Software.//// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER// DEALINGS IN THE SOFTWARE./* * Created by SharpDevelop. * User: lextm * Date: 11/29/2009 * Time: 11:01 AM * * To change this template use Tools | Options | Coding | Edit Standard Headers. */using System;using System.Linq;using GSF.Net.Snmp.Messaging;namespace GSF.Net.Snmp.Pipeline{ /// <summary> /// Message handler factory. /// </summary> [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")] public sealed class MessageHandlerFactory { private readonly HandlerMapping[] _mappings; private readonly NullMessageHandler _nullHandler = new NullMessageHandler(); /// <summary> /// Initializes a new instance of the <see cref="MessageHandlerFactory"/> class. /// </summary> /// <param name="mappings">The mappings.</param> public MessageHandlerFactory(HandlerMapping[] mappings) { if (mappings == null) { throw new ArgumentNullException(nameof(mappings)); } _mappings = mappings; } /// <summary> /// Gets the handler. /// </summary> /// <param name="message">The message.</param> /// <returns></returns> public IMessageHandler GetHandler(ISnmpMessage message) { foreach (HandlerMapping mapping in _mappings.Where(mapping => mapping.CanHandle(message))) { return mapping.Handler; } return _nullHandler; } }}
// Message handler factory class.
// Copyright (C) 2009-2010 Lex Li
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
/*
* Created by SharpDevelop.
* User: lextm
* Date: 11/29/2009
* Time: 11:01 AM
*
* To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
using System;
using System.Linq;
using GSF.Net.Snmp.Messaging;
namespace GSF.Net.Snmp.Pipeline
{
/// <summary>
/// Message handler factory.
/// </summary>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses")]
public sealed class MessageHandlerFactory
{
private readonly HandlerMapping[] _mappings;
private readonly NullMessageHandler _nullHandler = new NullMessageHandler();
/// <summary>
/// Initializes a new instance of the <see cref="MessageHandlerFactory"/> class.
/// </summary>
/// <param name="mappings">The mappings.</param>
public MessageHandlerFactory(HandlerMapping[] mappings)
{
if (mappings == null)
{
throw new ArgumentNullException(nameof(mappings));
}
_mappings = mappings;
}
/// <summary>
/// Gets the handler.
/// </summary>
/// <param name="message">The message.</param>
/// <returns></returns>
public IMessageHandler GetHandler(ISnmpMessage message)
{
foreach (HandlerMapping mapping in _mappings.Where(mapping => mapping.CanHandle(message)))
{
return mapping.Handler;
}
return _nullHandler;
}
}
}