public void AddRequest(CheDaoInterface req)
{
switch (req.message_type) {
case CheDaoInterface.data_validation:
CheRequest c_item = (CheRequest)req;
this.Invoke((MethodInvoker)delegate
{
this._AddRequest(c_item);// run in UI thread
});
break;
case CheDaoInterface.print_confirm:
ChePActionRequest p_item = (ChePActionRequest)req;
this.Invoke((MethodInvoker)delegate
{
this.MoveToDoneList(p_item.Order_Number,p_item.Printed_Time,p_item.message_type);// run in UI thread
});
break;
case CheDaoInterface.delete_cmd:
CheDeleteActionRequest d_item = (CheDeleteActionRequest)req;
this.Invoke((MethodInvoker)delegate
{
this.MoveToDoneList(d_item.Order_Number, d_item.Printed_Time,d_item.message_type);// run in UI thread
});
break;
default:
Trace.WriteLineIf(Program.trace_sw.TraceError, "incorrect message request received " + req.message_type.ToString());
break;
}
}
public void AddRequest(CheDaoInterface req)
{
switch (req.message_type)
{
case CheDaoInterface.data_validation:
CheRequest c_item = (CheRequest)req;
this.Invoke((MethodInvoker) delegate
{
this._AddRequest(c_item); // run in UI thread
});
break;
case CheDaoInterface.print_confirm:
ChePActionRequest p_item = (ChePActionRequest)req;
this.Invoke((MethodInvoker) delegate
{
this.MoveToDoneList(p_item.Order_Number, p_item.Printed_Time, p_item.message_type); // run in UI thread
});
break;
case CheDaoInterface.delete_cmd:
CheDeleteActionRequest d_item = (CheDeleteActionRequest)req;
this.Invoke((MethodInvoker) delegate
{
this.MoveToDoneList(d_item.Order_Number, d_item.Printed_Time, d_item.message_type); // run in UI thread
});
break;
default:
Trace.WriteLineIf(Program.trace_sw.TraceError, "incorrect message request received " + req.message_type.ToString());
break;
}
}
private byte[] GenerateBytes(short type, CheDaoInterface req)
{
XmlDocument doc = new XmlDocument();
XmlSerializer xmlSerializer = new XmlSerializer((req.GetType()));
MemoryStream body_str = new MemoryStream(1024);
xmlSerializer.Serialize(body_str, req);
int length = (int)body_str.Position;
MemoryStream pkg_str = new MemoryStream(length + 6);
byte[] tmp = System.BitConverter.GetBytes((int)length);
Array.Reverse(tmp);
pkg_str.Write(tmp, 0, 4);
tmp = System.BitConverter.GetBytes(type);
Array.Reverse(tmp);
pkg_str.Write(tmp, 0, 2);
pkg_str.Write(body_str.GetBuffer(), 0, length);
return pkg_str.GetBuffer();
}
/* handle the message from network side*/
internal static byte[] HandlePackage(short cur_type, byte[] msg_body, int buffer_point)
{
LocalChePackage p = new LocalChePackage(cur_type, msg_body, buffer_point);
CheDaoInterface msg = _HandlePackage(p);
if (msg != null)
{
string rsp_msg = msg.Response();
Trace.WriteLineIf(Program.trace_sw.TraceVerbose, "send response: " + rsp_msg, "message");
byte[] body_buffer = Encoding.UTF8.GetBytes(rsp_msg);
MemoryStream rsp_str = new MemoryStream(body_buffer.Length + 6);
byte[] tmp = System.BitConverter.GetBytes((int)rsp_msg.Length);
Array.Reverse(tmp);
rsp_str.Write(tmp, 0, sizeof(int));
tmp = System.BitConverter.GetBytes((short)p.msg_type);
Array.Reverse(tmp);
rsp_str.Write(tmp, 0, sizeof(short));
rsp_str.Write(body_buffer, 0, body_buffer.Length);
return(rsp_str.GetBuffer());
}
return(null);
}
public static void NewRequest(CheDaoInterface req)
{
mainForm.AddRequest(req);
}
/**
* make sure the function is re-entriable.
**/
static CheDaoInterface _HandlePackage(LocalChePackage p)
{
CheDaoInterface msg = create(p);
if (msg != null)
{
switch (msg.message_type)
{
case CheDaoInterface.data_validation:
lock (mPendingList)
{
CheRequest item = (CheRequest)msg;
try
{
//put to pending list
mPendingList.Add(item.Order_Number, item);
}
catch (Exception e)
{
Trace.WriteLineIf(Program.trace_sw.TraceError, "Insert CheRequest Failed, maybe the key already exist " + e.Message, "error");
msg.Result = 2; //2:其它不符;
}
}
break;
case CheDaoInterface.clean_cmd: //delete the item one hour later
int bypass_counter = 0;
lock (mPendingList)
{
Dictionary <String, CheRequest> newPendingList = new Dictionary <String, CheRequest>();
foreach (String str in mPendingList.Keys)
{
CheRequest c_item = mPendingList[str];
DateTime c_date = new DateTime(c_item.create_time);
if (c_date.AddMinutes(AppConfig.GetLifeTimeOfRec()) > DateTime.Now)
{
newPendingList.Add(str, c_item);
}
else
{
bypass_counter++;
}
}
mPendingList = newPendingList;
}
Trace.WriteLineIf(Program.trace_sw.TraceVerbose, "clean up the internal cache and bypass " + bypass_counter.ToString());
break;
case CheDaoInterface.scan_print:
case CheDaoInterface.manual_print:
lock (mPendingList)
{
ChePrintRequest p_item = (ChePrintRequest)msg;
if (mPendingList.ContainsKey(p_item.Order_Number))
{
CheRequest w_item = mPendingList[p_item.Order_Number];
mPendingList.Remove(p_item.Order_Number);
Program.NewRequest(w_item); // to be print
}
else
{
Trace.WriteLineIf(Program.trace_sw.TraceError, "invalide print request, no key exist", "error");
msg.Result = 2; //2:已开票;
}
}
break;
case CheDaoInterface.print_confirm:
Program.NewRequest(msg); //internal message
break;
case CheDaoInterface.delete_cmd:
Program.NewRequest(msg); //internal message
break;
default:
msg = null;
break;
}
try
{
lock (bk_stream)
{
if (msg != null)
{
p.save(bk_stream); // just save the valid msg
}
}
}
catch (Exception e)
{
save_error_count++;
Trace.WriteLineIf(Program.trace_sw.TraceError, "Write backup stream failed " + e.Message, "error");
}
}
return(msg);
}
