/// <summary>
/// 引发 DataReceived 事件。
/// </summary>
/// <param name="e">包含事件数据的 <see cref="DataReceivedEventArgs"/>。</param>
internal void FireDataReceived(DataReceivedEventArgs e)
{
if (this.DataReceived != null)
{
this.DataReceived(this, e);
}
}
internal PipeMessageContext(DataReceivedEventArgs eventArgs, MessageInfo messageInfo) : base(messageInfo)
{
if (eventArgs == null)
{
throw new ArgumentNullException("eventArgs");
}
this.eventArgs = eventArgs;
}
/// <summary>
/// 从指定的 DataReceivedEventArgs 和 Message 创建 IMessageContext 的实例。
/// </summary>
/// <param name="eventArgs">要从其创建 IMessageContext 实例的 DataReceivedEventArgs 对象。</param>
/// <param name="messageInfo">要从其创建 IMessageContext 实例的 MessageInfo 对象。</param>
/// <returns>MessageContext 实例。</returns>
public static MessageContext CreateFrom(DataReceivedEventArgs eventArgs, MessageInfo messageInfo)
{
return new PipeMessageContext(eventArgs, messageInfo);
}
void channel_DataReceived(object sender, DataReceivedEventArgs e)
{
this.owner.FireDataReceived(e);
}
// 成功接收到数据后引发事件
private static void HandleReceivedData(object data)
{
Exception error = null;
CallbackState state = data as CallbackState;
if (state != null)
{
state.InvokeStacks.Add(new KeyValue<DateTime, string>() { Key = DateTime.Now, Value = Thread.CurrentThread.ManagedThreadId.ToString("#000") + " " + (Thread.CurrentThread.IsThreadPoolThread ? "true" : "false") +
" HandleReceivedData"
});
DataReceivedEventArgs eventArgs = null;
try
{
eventArgs = new DataReceivedEventArgs(state);
state.InvokeStacks.Add(new KeyValue<DateTime, string>() { Key = DateTime.Now, Value = "HandleReceivedData-FireDataReceived" });
state.Channel.FireDataReceived(eventArgs);
// 通知调用方并返回结果
if (!eventArgs.IsReplied)
{
eventArgs.Reply();
}
}
catch (Exception err)
{
state.InvokeStacks.Add(new KeyValue<DateTime, string>() { Key = DateTime.Now, Value = "HandleReceivedData-Error:" + err.GetType().FullName });
// ReplyException 直接记录日志
if (err is ReplyException)
{
error = err;
}
else
{
// 其它错误，如果已经对调用方进行过应答，那么说明错误是在应答后发生的，仅记录日志
if (eventArgs.IsReplied)
{
error = err;
}
else // 未对调用方进行过应答，那么应将错误发送给调用方
{
// 生成用于发送给调用方的错误对象
ReturnValue<object> retError = err is BusinessException ? ReturnValue<object>.GetBusinessError((BusinessException)err) :
(
err is ArgumentException ? ReturnValue<object>.Get404Error(((ArgumentException)err).Message) : ReturnValue<object>.Get500Error(err)
);
// 仅针对 404 或者 500 的错误在本地记录错误日志并发送给调用方，其它错误不记录日志，直接发送给调用方
if (retError.Code == 404 || retError.Code == 500)
{
error = err;
}
state.InvokeStacks.Add(new KeyValue<DateTime, string>() { Key = DateTime.Now, Value = "HandleReceivedData-WriteError" });
try
{
BinarySerializeHelper.Write(formatter, state.Channel.pipeStream, retError, true, state.Channel.sendTimeout);
}
catch
{
// 错误未能成功通知给发送方时，也应在本地记录错误日志，这时，发送方会一直等待直到出现超时错误，记录下此日志，方便查询
error = err;
}
}
}
}
finally
{
state.InvokeStacks.Add(new KeyValue<DateTime, string>() { Key = DateTime.Now, Value = "HandleReceivedData-End" });
// 打印请求日志
int requestMilliseconds = (int)(state.InvokeStacks[state.InvokeStacks.Count - 1].Key - state.InvokeStacks[1].Key).TotalMilliseconds;
if (error != null || eventArgs.ExtraError != null || requestMilliseconds > 3000 || XMS.Core.Container.LogService.IsDebugEnabled)
{
StringBuilder sb = new StringBuilder(128);
if (error != null)
{
sb.Append("响应来自 AppInstanceId=" + state.Channel.Client.AppInstanceId + ", PipeName=" + state.Channel.Client.PipeName + " 的请求的过程中发生错误，详细错误信息为：");
sb.Append("\r\n");
sb.Append(error.GetFriendlyToString());
}
else
{
if (requestMilliseconds > 3000 || XMS.Core.Container.LogService.IsDebugEnabled)
{
sb.Append("成功响应来自 AppInstanceId=" + state.Channel.Client.AppInstanceId + ", PipeName=" + state.Channel.Client.PipeName + " 的请求");
}
}
sb.Append("\r\n\t响应耗时：\t").Append(requestMilliseconds.ToString("#0.000")).Append(" ms");
sb.Append("\r\n\t调用步骤：\t");
for (int j = 0; j < state.InvokeStacks.Count; j++)
{
sb.Append("\r\n\t\t" + state.InvokeStacks[j].Key.ToString("HH:mm:ss.fff")).Append("\t").Append(state.InvokeStacks[j].Value);
}
// 记录 Reply 之后产生的附加错误
if (eventArgs.ExtraError != null)
{
sb.Append("\r\n但在成功响应请求后的本地处理过程中，发生以下错误：");
sb.Append("\r\n");
sb.Append(eventArgs.ExtraError.GetFriendlyToString());
}
XMS.Core.Container.LogService.Warn(sb.ToString(), PipeConstants.LogCategory);
}
}
}
}
