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/*
* 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.Qpid.Channel
{
using System;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.Collections.Generic;
using System.Collections.ObjectModel;
class AmqpChannelFactory<TChannel> : ChannelFactoryBase<TChannel>
{
MessageEncoderFactory messageEncoderFactory;
AmqpTransportBindingElement bindingElement;
AmqpChannelProperties channelProperties;
long maxBufferPoolSize;
bool shared;
int prefetchLimit;
BindingContext bindingContext;
List<AmqpTransportChannel> openChannels;
internal AmqpChannelFactory(AmqpTransportBindingElement bindingElement, BindingContext context)
: base(context.Binding)
{
this.bindingElement = bindingElement;
this.bindingContext = context;
this.channelProperties = bindingElement.ChannelProperties.Clone();
this.shared = bindingElement.Shared;
this.prefetchLimit = bindingElement.PrefetchLimit;
this.maxBufferPoolSize = bindingElement.MaxBufferPoolSize;
Collection<MessageEncodingBindingElement> messageEncoderBindingElements
= context.BindingParameters.FindAll<MessageEncodingBindingElement>();
if (messageEncoderBindingElements.Count > 1)
{
throw new InvalidOperationException("More than one MessageEncodingBindingElement was found in the BindingParameters of the BindingContext");
}
else if (messageEncoderBindingElements.Count == 1)
{
this.messageEncoderFactory = messageEncoderBindingElements[0].CreateMessageEncoderFactory();
}
else
{
this.messageEncoderFactory = new TextMessageEncodingBindingElement().CreateMessageEncoderFactory();
}
openChannels = new List<AmqpTransportChannel>();
}
public override T GetProperty<T>()
{
T mep = messageEncoderFactory.Encoder.GetProperty<T>();
if (mep != null)
{
return mep;
}
if (typeof(T) == typeof(MessageVersion))
{
return (T)(object)messageEncoderFactory.Encoder.MessageVersion;
}
return base.GetProperty<T>();
}
protected override void OnOpen(TimeSpan timeout)
{
// check and freeze security properties now
AmqpSecurityMode mode = AmqpSecurityMode.None;
if (this.bindingElement.BindingSecurity != null)
{
mode = bindingElement.BindingSecurity.Mode;
}
this.channelProperties.AmqpSecurityMode = mode;
if (mode == AmqpSecurityMode.None)
{
return;
}
AmqpChannelHelpers.FindAuthenticationCredentials(this.channelProperties, this.bindingContext);
}
protected override IAsyncResult OnBeginOpen(TimeSpan timeout, AsyncCallback callback, object state)
{
throw new NotImplementedException("AmqpChannelFactory OnBeginOpen");
//// return null;
}
protected override void OnEndOpen(IAsyncResult result)
{
throw new NotImplementedException("AmqpChannelFactory OnEndOpen");
}
protected override TChannel OnCreateChannel(EndpointAddress remoteAddress, Uri via)
{
AmqpTransportChannel channel = new AmqpTransportChannel(this, this.channelProperties, remoteAddress, this.messageEncoderFactory.Encoder, this.maxBufferPoolSize, this.shared, this.prefetchLimit);
lock (openChannels)
{
channel.Closed += new EventHandler(channel_Closed);
openChannels.Add(channel);
}
return (TChannel)(object) channel;
}
void channel_Closed(object sender, EventArgs e)
{
if (this.State != CommunicationState.Opened)
{
return;
}
lock (openChannels)
{
AmqpTransportChannel channel = (AmqpTransportChannel)sender;
if (openChannels.Contains(channel))
{
openChannels.Remove(channel);
}
}
}
protected override void OnClose(TimeSpan timeout)
{
base.OnClose(timeout);
lock (openChannels)
{
foreach (AmqpTransportChannel channel in openChannels)
{
channel.Close(timeout);
}
}
}
}
}
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