/// <summary>
/// 尝试以远程调用的方式处理消息
/// </summary>
/// <param name="msg"></param>
/// <param name="data"></param>
/// <returns></returns>
private static bool TryProcessCall(Message msg, RtpData data)
{
var requestId = msg.Header.GetValue <Guid>(FieldRtpCallRequestId, Guid.Empty);
if (requestId == Guid.Empty)
{
return(false);
}
var error = msg.Header.GetValue <string>(FieldRtpCallErrorMessage, string.Empty);
var isCompleted = msg.Header.GetValue <bool>(FieldRtpCallIsCompleted, false);
var identity = RtpCallManager.GetIdentity(requestId);
if (identity != null)
{
if (!string.IsNullOrEmpty(error))
{
//错误处理
identity.Future.SetError(new ApplicationException(error));
}
else
{
identity.Process(data, isCompleted);
}
if (isCompleted)
{
identity.Future.SetResult(true);
RtpCallManager.ReturnIdentity(identity);
}
}
return(true);
}
/// <summary>
/// 创建一个rtp能力可以识别的消息
/// </summary>
/// <param name="eventName"></param>
/// <param name="header"></param>
/// <param name="content"></param>
/// <returns></returns>
private Message CreateResponseMessage(string eventName, DTObject header, byte[] content, string error, bool isCompleted)
{
var rtpData = new RtpData(this.Data.Participant, header, content);
var data = RtpDataAnalyzer.Serialize(rtpData);
var msg = RtpCapability.CreateCallMessage(this.Name, eventName, data, this.RequestId, (mh) =>
{
if (!string.IsNullOrEmpty(this.Destination))
{
mh.SetValue(MessageField.Destination, this.Destination);
}
else if (this.Destinations != null)
{
mh.SetValue(MessageField.Destinations, this.Destinations);
}
if (!string.IsNullOrEmpty(error))
{
mh.SetValue(RtpCapability.FieldRtpCallErrorMessage, error);
}
mh.SetValue(RtpCapability.FieldRtpCallIsCompleted, isCompleted);
});
msg.Origin = this.Data.Participant.Orgin;
return(msg);
}
private Future <bool> RaiseEvent(string eventName,
DTObject header,
byte[] body,
Action <DTObject> setMessageHeader)
{
var rtpData = new RtpData(this.Channel.Participant, header, body);
var data = RtpDataAnalyzer.Serialize(rtpData);
Message msg = CreateMessage(eventName, data, setMessageHeader);
return(this.Channel.Context.Client.Send(msg));
}
/// <summary>
/// 远程调用，该调用非常强大，不仅可以同步或异步执行并且获取结果，更可以获取服务器端多次推送的结果
/// </summary>
/// <param name="header"></param>
/// <param name="body"></param>
/// <param name="future"></param>
private Future <bool> Call(string eventName, DTObject header, byte[] body, Action <RtpData, bool> process, Action <DTObject> setMessageHeader)
{
var identity = RtpCallManager.BorrowIdentity();
identity.Process = process;
var rtpData = new RtpData(this.Channel.Participant, header, body);
var data = RtpDataAnalyzer.Serialize(rtpData);
identity.Future.Start();
Message msg = CreateCallMessage(this.Name, eventName, data, identity.RequestId, setMessageHeader);
this.Channel.Context.Client.Send(msg);
return(identity.Future);
}
public static byte[] Serialize(RtpData data)
{
using (var temp = ByteBuffer.Borrow(data.Body.Length))
{
var array = temp.Item;
var participantData = DataAnalyzer.SerializeParticipant(data.Participant);
var extensionssData = GetExtensionsData(data.Header);
array.Write(participantData.Length);
array.Write(participantData);
array.Write(extensionssData.Length);
array.Write(extensionssData);
array.Write(data.Body.Length);
array.Write(data.Body);
return(array.ToArray());
}
}
private static void RaiseLocalEvent(AnycastClient client, string origin, string eventName, RtpData data)
{
if (ReceivedRaise != null)
{
var ea = new ReceivedRaiseEventArgs(origin, eventName, data);
ReceivedRaise(client, ea);
}
}
public ReceivedRaiseEventArgs(string origin, string eventName, RtpData data)
{
this.Origin = origin;
this.EventName = eventName;
this.Data = data;
}