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using System;
using System.Collections.Generic;
using System.Text;
using System.ServiceModel;
using System.ServiceModel.Channels;
namespace System.ServiceModel.Dispatcher
{
internal class MessageProcessingContext
{
OperationContext operation_context;
RequestContext request_context;
Message incoming_message;
Message reply_message;
InstanceContext instance_context;
Exception processingException;
DispatchOperation operation;
UserEventsHandler user_events_handler;
IChannel reply_or_input;
public MessageProcessingContext (OperationContext opCtx, IChannel replyOrInput)
{
operation_context = opCtx;
request_context = opCtx.RequestContext;
incoming_message = opCtx.IncomingMessage;
user_events_handler = new UserEventsHandler (this);
reply_or_input = replyOrInput;
}
public IChannel Channel {
get { return reply_or_input; }
}
public DispatchOperation Operation
{
get { return operation; }
set { operation = value; }
}
public Exception ProcessingException
{
get { return processingException; }
set { processingException = value; }
}
public Message ReplyMessage
{
get { return reply_message; }
set { reply_message = value; }
}
public InstanceContext InstanceContext
{
get { return instance_context; }
set { instance_context = value; }
}
public Message IncomingMessage
{
get { return incoming_message; }
set { incoming_message = value; }
}
public RequestContext RequestContext
{
get { return request_context; }
set { request_context = value; }
}
public OperationContext OperationContext
{
get { return operation_context; }
set { operation_context = value; }
}
public UserEventsHandler EventsHandler
{
get { return user_events_handler; }
set { user_events_handler = value; }
}
public void Reply (IDuplexChannel channel, bool useTimeout)
{
EventsHandler.BeforeSendReply ();
if (useTimeout && Operation.Parent.ChannelDispatcher != null) // FIXME: this condition is a workaround for NRE, there might be better way to get timeout value.
channel.Send (ReplyMessage, Operation.Parent.ChannelDispatcher.timeouts.SendTimeout);
else
channel.Send (ReplyMessage);
}
public void Reply (bool useTimeout)
{
EventsHandler.BeforeSendReply ();
if (useTimeout && Operation.Parent.ChannelDispatcher != null) // FIXME: this condition is a workaround for NRE, there might be better way to get timeout value.
RequestContext.Reply (ReplyMessage, Operation.Parent.ChannelDispatcher.timeouts.SendTimeout);
else
RequestContext.Reply (ReplyMessage);
}
}
#region user events implementation
internal class UserEventsHandler
{
MessageProcessingContext request_context;
DispatchRuntime dispatch_runtime;
IClientChannel channel;
object [] msg_inspectors_states;
object [] callcontext_initializers_states;
public UserEventsHandler (MessageProcessingContext mrc)
{
request_context = mrc;
dispatch_runtime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
msg_inspectors_states = new object [dispatch_runtime.MessageInspectors.Count];
channel = request_context.OperationContext.Channel as IClientChannel;
}
public void AfterReceiveRequest ()
{
Message message = request_context.IncomingMessage;
for (int i = 0; i < dispatch_runtime.MessageInspectors.Count; ++i)
msg_inspectors_states [i] = dispatch_runtime.MessageInspectors [i].AfterReceiveRequest (
ref message, channel, request_context.InstanceContext);
request_context.IncomingMessage = message;
}
public void BeforeSendReply ()
{
Message toBeChanged = request_context.ReplyMessage;
for (int i = 0; i < dispatch_runtime.MessageInspectors.Count; ++i)
dispatch_runtime.MessageInspectors [i].BeforeSendReply (ref toBeChanged, msg_inspectors_states [i]);
request_context.ReplyMessage = toBeChanged;
}
public void BeforeInvoke (DispatchOperation operation)
{
callcontext_initializers_states = new object [operation.CallContextInitializers.Count];
for (int i = 0; i < callcontext_initializers_states.Length; ++i)
callcontext_initializers_states [i] = operation.CallContextInitializers [i].BeforeInvoke (
request_context.InstanceContext, channel, request_context.IncomingMessage);
}
public void AfterInvoke (DispatchOperation operation)
{
for (int i = 0; i < callcontext_initializers_states.Length; ++i)
operation.CallContextInitializers [i].AfterInvoke (callcontext_initializers_states [i]);
}
}
#endregion
}
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