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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.
*
*/
using System;
using System.IO;
using System.ServiceModel;
using System.ServiceModel.Channels;
using org.apache.qpid.client;
using org.apache.qpid.transport;
using org.apache.qpid.transport.util;
namespace org.apache.qpid.wcf.model
{
internal sealed class QpidOutputChannel : QpidOutputChannelBase
{
private readonly MessageEncoder _encoder;
private readonly ClientSession _session;
private readonly string _queueName;
public QpidOutputChannel(BindingContext context, ClientSession session, EndpointAddress address)
: base(context, address)
{
var encoderElement = context.Binding.Elements.Find<MessageEncodingBindingElement>();
if (encoderElement != null)
{
_encoder = encoderElement.CreateMessageEncoderFactory().Encoder;
}
_queueName = address.Uri.ToString();
_session = session;
}
public override void Send(System.ServiceModel.Channels.Message message, TimeSpan timeout)
{
if (message.State != MessageState.Closed)
{
byte[] body;
using (var str = new MemoryStream())
{
_encoder.WriteMessage(message, str);
body = str.ToArray();
}
_session.messageTransfer("amq.direct", MessageAcceptMode.NONE, MessageAcquireMode.PRE_ACQUIRED,
new Header(new DeliveryProperties().setRoutingKey(_queueName),
new transport.MessageProperties().setMessageId(UUID.randomUUID())),
body);
}
}
public override void Close(TimeSpan timeout)
{
if (State == CommunicationState.Closed || State == CommunicationState.Closing)
return; // Ignore the call, we're already closing.
OnClosing();
OnClosed();
}
public override void Open(TimeSpan timeout)
{
if (State != CommunicationState.Created && State != CommunicationState.Closed)
throw new InvalidOperationException(string.Format("Cannot open the channel from the {0} state.", State));
OnOpening();
var qr = (QueueQueryResult) _session.queueQuery(_queueName).Result;
if (qr.getQueue() == null)
{
// create the queue
_session.queueDeclare(_queueName, null, null);
}
OnOpened();
}
}
}
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