static CheDaoInterface create(LocalChePackage p)
{
Trace.WriteLineIf(Program.trace_sw.TraceVerbose, String.Format("incomming package {0:d} {1:s}", p.msg_type, p.rawXML), "message");
if (p.msg_type == CheDaoInterface.data_validation)
{
Invoice_Request_Count++;
return(CheRequest.create(p.rawXML, p.time_ticks));
}
if (p.msg_type == CheDaoInterface.scan_print || p.msg_type == CheDaoInterface.manual_print)
{
Print_Request_Count++;
return(ChePrintRequest.create(p.msg_type, p.rawXML, p.time_ticks));
}
if (p.msg_type == CheDaoInterface.print_confirm)
{
Print_Act_Count++;
return(ChePActionRequest.create(p.rawXML, p.time_ticks));//it is just a string
}
if (p.msg_type == CheDaoInterface.delete_cmd)
{
Print_Act_Count++;
return(CheDeleteActionRequest.create(p.rawXML, p.time_ticks));//it is just a string
}
return(new SimpleRequest(p.msg_type));
}
/* 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);
}
/**
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;
}
static CheDaoInterface create(LocalChePackage p)
{
Trace.WriteLineIf(Program.trace_sw.TraceVerbose,String.Format("incomming package {0:d} {1:s}", p.msg_type, p.rawXML),"message");
if (p.msg_type == CheDaoInterface.data_validation)
{
Invoice_Request_Count++;
return CheRequest.create(p.rawXML,p.time_ticks);
}
if (p.msg_type == CheDaoInterface.scan_print || p.msg_type == CheDaoInterface.manual_print) {
Print_Request_Count++;
return ChePrintRequest.create(p.msg_type,p.rawXML,p.time_ticks);
}
if (p.msg_type == CheDaoInterface.print_confirm) {
Print_Act_Count++;
return ChePActionRequest.create(p.rawXML,p.time_ticks);//it is just a string
}
if (p.msg_type == CheDaoInterface.delete_cmd) {
Print_Act_Count++;
return CheDeleteActionRequest.create(p.rawXML, p.time_ticks);//it is just a string
}
return new SimpleRequest(p.msg_type);
}
/*
it is a bad choice, the call is from GUI thread
the package is from GUI*/
internal static void Handle_Internal_Package(short msg_type, byte[] msg_body)
{
LocalChePackage p = new LocalChePackage(msg_type, msg_body, msg_body.Length);
_HandlePackage(p);
}
/* 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 restore()
{
const int max_fragment = 1024;
byte[] buffer = new byte[max_fragment];
int read_len = 0;
if (rst_stream != null)
{
int msg_count = 0;
int discard_count = 0;
Trace.WriteLineIf(Program.trace_sw.TraceVerbose,"restore dumped package","info");
Boolean read_ok = false;
do
{
read_ok = false;
read_len = rst_stream.Read(buffer, 0, sizeof(int));
if (read_len != sizeof(int)) { continue; }
int msg_len = BitConverter.ToInt32(buffer, 0);
read_len = rst_stream.Read(buffer, 0, sizeof(short));
if (read_len != sizeof(short)) { continue; }
short msg_type = BitConverter.ToInt16(buffer, 0);
read_len = rst_stream.Read(buffer, 0, sizeof(long));
if (read_len != sizeof(long)) { continue; }
DateTime c_t = new DateTime(BitConverter.ToInt64(buffer, 0));
read_len = rst_stream.Read(buffer, 0, msg_len);
if (read_len != msg_len) { continue; }
read_ok = true;
msg_count++;
if (c_t.AddMinutes(AppConfig.GetLifeTimeOfRec()) < DateTime.Now)
{
discard_count++;
continue; // skip the message because it is too old.
}
LocalChePackage p = new LocalChePackage(msg_type, buffer, msg_len, c_t.Ticks);
_HandlePackage(p);
} while (read_ok);
Trace.WriteLineIf(Program.trace_sw.TraceInfo,String.Format("restore done found msg {0:d} discard {1:d}",msg_count,discard_count),"info");
String obsolete_fn = active_a == "A-" ? "B-" : "A-";
rst_stream.Close();
try
{
File.Delete(obsolete_fn + bk_fn);
}
catch (Exception e) {
Trace.WriteLineIf(Program.trace_sw.TraceError,"delete backup file " + obsolete_fn + bk_fn + " failed" + e.Message,"error");
}
}
return;
}
/*
* it is a bad choice, the call is from GUI thread
* the package is from GUI*/
internal static void Handle_Internal_Package(short msg_type, byte[] msg_body)
{
LocalChePackage p = new LocalChePackage(msg_type, msg_body, msg_body.Length);
_HandlePackage(p);
}
/**
* 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);
}
public static void restore()
{
const int max_fragment = 1024;
byte[] buffer = new byte[max_fragment];
int read_len = 0;
if (rst_stream != null)
{
int msg_count = 0;
int discard_count = 0;
Trace.WriteLineIf(Program.trace_sw.TraceVerbose, "restore dumped package", "info");
Boolean read_ok = false;
do
{
read_ok = false;
read_len = rst_stream.Read(buffer, 0, sizeof(int));
if (read_len != sizeof(int))
{
continue;
}
int msg_len = BitConverter.ToInt32(buffer, 0);
read_len = rst_stream.Read(buffer, 0, sizeof(short));
if (read_len != sizeof(short))
{
continue;
}
short msg_type = BitConverter.ToInt16(buffer, 0);
read_len = rst_stream.Read(buffer, 0, sizeof(long));
if (read_len != sizeof(long))
{
continue;
}
DateTime c_t = new DateTime(BitConverter.ToInt64(buffer, 0));
read_len = rst_stream.Read(buffer, 0, msg_len);
if (read_len != msg_len)
{
continue;
}
read_ok = true;
msg_count++;
if (c_t.AddMinutes(AppConfig.GetLifeTimeOfRec()) < DateTime.Now)
{
discard_count++;
continue; // skip the message because it is too old.
}
LocalChePackage p = new LocalChePackage(msg_type, buffer, msg_len, c_t.Ticks);
_HandlePackage(p);
} while (read_ok);
Trace.WriteLineIf(Program.trace_sw.TraceInfo, String.Format("restore done found msg {0:d} discard {1:d}", msg_count, discard_count), "info");
String obsolete_fn = active_a == "A-" ? "B-" : "A-";
rst_stream.Close();
try
{
File.Delete(obsolete_fn + bk_fn);
}
catch (Exception e) {
Trace.WriteLineIf(Program.trace_sw.TraceError, "delete backup file " + obsolete_fn + bk_fn + " failed" + e.Message, "error");
}
}
return;
}
