//initiates the TextQueryHandler to get the text files that belong to a category
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
msg.ShowMessage();
TextQueryHandler textqueryhandler = new TextQueryHandler();
/*List<List<string>> dummy = new List<List<string>>();
* dummy.Add(msg.category);*/
List <string> textfiles = textqueryhandler.getTextFiles(msg.category);
ServiceMessage reply = ServiceMessage.MakeTextFilesMessage("client-echo", "textfiles", textfiles, "reply from textfiles");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
//break;
}
}
//initiates the QueryHandler for metadata query processing and text query processing
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
if (!msg.ResourceName.Equals("textquery"))
{
QueryHandler queryhandler = new QueryHandler();
List <List <string> > results = queryhandler.MetaQuery(msg.nlist);
Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
msg.ShowMessage();
//Console.Write("\n Query processing is an exercise for students\n");
if (msg.Contents == "quit")
{
break;
}
ServiceMessage reply = ServiceMessage.MakeQueryMessage("client-echo", "query", results, "reply from query");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
else
{
TextQueryHandler textqueryhandler = new TextQueryHandler();
List <List <string> > results = textqueryhandler.textQuery(msg.nlist);
if (msg.Contents == "quit")
{
break;
}
ServiceMessage reply = ServiceMessage.MakeQueryMessage("client-echo", "query", results, "reply from tquery");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
}
}
//----< get and process message from client>----------------
protected override void ProcessMessages()
{
MappingTool mt = new MappingTool();
while (true)
{
ServiceMessage msg = bq.deQ();
Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
//msg.ShowMessage();
//Console.Write("\n Navigation processing is an exercise for students\n");
if (msg.Contents == "quit")
{
break;
}
///////////////////////////////////////////////////////////////////////////////////////
// find files relationship and construct parents and child map when client
// connect with server
if (msg.Contents == "mapping")
{
mt.Mapping();
ServiceMessage reply1 = ServiceMessage.MakeMessage("client-nav", "nav", "mapping finished", "mapping finished");
reply1.TargetUrl = msg.SourceUrl;
reply1.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply1);
}
//////////////////////////////////////////////////////////////////////////////////////
// client send current file name to server, server find the parents and children
// then reply
if (msg.ResourceName == "file relationship")
{
string parents = null;
parents = mt.findParents(msg.Contents);
ServiceMessage reply2 = ServiceMessage.MakeMessage("client-nav", "nav", parents, "found parents");
reply2.TargetUrl = msg.SourceUrl;
reply2.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply2);
}
}
}
//----------< extract query information from message from client >----------
public List <string> queryProcessing(ServiceMessage msg)
{
//List<string> foundFiles = new List<string>();
//foundFiles.Clear();
int i, j;
string message = msg.Contents;
string categories = null;
string contents = null;
string[] queryCategories = null;
string[] queryContents = null;
for (i = 0; message[i] != '&'; i++)
{
categories += message[i];
}
for (j = i + 1; j < message.Length; j++)
{
contents += message[j];
}
char[] separator = { ' ' };
queryCategories = categories.Split(separator);
queryContents = contents.Split(separator);
if (msg.ResourceName == "textqueryA")
{
//how to send the query result to the client UI?
TextQuery(queryCategories, queryContents, true);
}
else if (msg.ResourceName == "textqueryO")
{
TextQuery(queryCategories, queryContents, false);
}
else if (msg.ResourceName == "metadataquery")
{
XmlQuery(queryCategories, queryContents);
}
return(foundFiles);
}
//----< get and process message from server>----------------
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
/////////////////////////////////////////////////////////////////
// receive query results and show in UI
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.AddQueryResult),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { msg.Contents }
);
if (msg.Contents == "quit")
{
msg.TargetCommunicator = "dispatcher";
AbstractMessageDispatcher.GetInstance().PostMessage(msg);
break;
}
}
}
//not using this
public void getFileContent(ServiceMessage msg)
{
Server s = new Server();
//s.GetFileContent(msg);
string file = msg.Contents;
long blockSize = 512;
string filename = @"..\\DocumentVault\\" + file;
try
{
FileStream fs;
fs = File.Open(filename, FileMode.Open, FileAccess.Read);
int bytesRead = 0;
while (true)
{
long remainder = (int)(fs.Length - fs.Position);
if (remainder == 0)
{
break;
}
long size = Math.Min(blockSize, remainder);
byte[] block = new byte[size];
bytesRead = fs.Read(block, 0, block.Length);
ServiceMessage msg4 =
ServiceMessage.MakeMessage("client-echo", "file_Comm", System.Text.Encoding.Default.GetString(block), "FileContent");
msg4.TargetUrl = msg.SourceUrl;
msg4.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher1 = AbstractMessageDispatcher.GetInstance();
dispatcher1.PostMessage(msg4);
}
fs.Flush();
fs.Close();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
msg.ShowMessage();
if (msg.Contents == "quit")
{
if (Verbose)
{
Console.Write("\n Echo shutting down");
}
// shut down dispatcher
msg.TargetCommunicator = "dispatcher";
AbstractMessageDispatcher.GetInstance().PostMessage(msg);
break;
}
}
}
//initiates the FileHandler o create a new for the uploaded file and create corresponding metadata file
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
var appDomain = AppDomain.CurrentDomain;
string temp1 = appDomain.BaseDirectory;
Directory.SetCurrentDirectory(temp1);
Directory.SetCurrentDirectory(@"..\\Testfiles\\textfiles");
if (msg.ResourceName != "metadata")
{
string fileName = msg.ResourceName.Remove(msg.ResourceName.IndexOf(","));
FileStream fs = null;
if (File.Exists(fileName))
{
byte[] block_data = Encoding.UTF8.GetBytes(msg.Contents);
fs = File.Open(fileName, FileMode.Append, FileAccess.Write);
fs.Write(block_data, 0, block_data.Length);
}
else
{
byte[] block_data = Encoding.UTF8.GetBytes(msg.Contents);
fs = File.Open(fileName, FileMode.Create, FileAccess.Write);
fs.Write(block_data, 0, block_data.Length);
}
fs.Close();
}
else
{
MetadataHandler mdhandler = new MetadataHandler();
mdhandler.createMetadata(msg.list);
}
}
}
//initiates the EditMetadataHandler for editing metadata
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
EditMetadataHandler queryhandler = new EditMetadataHandler();
//string message =
queryhandler.editMetadata(msg.tag);
//Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
//msg.ShowMessage();
//Console.Write("\n Query processing is an exercise for students\n");
if (msg.Contents == "quit")
{
break;
}
ServiceMessage reply = ServiceMessage.MakeMessage("client-echo", "query", " ", "reply from editmetadata");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
}
//----< default behavior of MessageDispatchers >-----------
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
if (Verbose)
{
string txt = "MessageDispatcher processing message for " + msg.TargetCommunicator + "\n";
ServiceMessage.ShowText(txt);
}
if (CommunicatorLookup.ContainsKey(msg.TargetCommunicator))
{
CommunicatorLookup[msg.TargetCommunicator].PostMessage(msg); // send on to TargetCommunicator
}
else if (msg.TargetCommunicator == this.Name && msg.Contents == "quit") // quit if sent to me
{
if (Verbose)
{
Console.Write("\n dispatcher stopping");
}
break;
}
else // can't find TargetCommunicator
{
if (CommunicatorLookup.ContainsKey("sender"))
{
CommunicatorLookup["sender"].PostMessage(msg);
}
else
{
Console.Write("\n message destination \"{0}\" unknown\n", msg.TargetCommunicator);
}
}
}
}
public void PostMessage(ServiceMessage msg)
{
bq.enQ(msg);
}
public void PostMessage(ServiceMessage msg)
{
bq.enQ(msg);
}
//----< Post a message to the MessageDispatcher >----------------
public void PostMessage(ServiceMessage servMsg)
{
//Console.Write("\n CommService.PostMessage called with Message:");
//msg.ShowMessage();
dispatcher.PostMessage(servMsg);
}
//----< get and process message from server>----------------
protected override void ProcessMessages()
{
while (true)
{
ServiceMessage msg = bq.deQ();
//////////////////////////////////////////////////////////////////////////////////
// receive message which contains category information
// then show in UI
if (msg.ResourceName == "Categories")
{
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.AddCategory),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { msg.Contents }
);
string message = "Connection successful!";
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.connected),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { message }
);
}
///////////////////////////////////////////////////////////////////////////////////
// receive message which contains files information in specified category
// then show in UI
if (msg.ResourceName == "files found in category")
{
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.AddFile),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { msg.Contents }
);
}
////////////////////////////////////////////////////////////////////////////////////
// receive message which contains textfile content
// then show in UI
if (msg.ResourceName == "textfile")
{
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.showText),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { msg.Contents }
);
}
////////////////////////////////////////////////////////////////////////////////////
// receive message which contains xmlfile content
// then show in UI
if (msg.ResourceName == "xmlfile")
{
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.showXml),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { msg.Contents }
);
mainWin.dispatcher.Invoke(
new Action <string>(mainWin.showChildren),
System.Windows.Threading.DispatcherPriority.Background,
new string[] { msg.Contents }
);
}
////////////////////////////////////////////////////////////////////////////////////
if (msg.Contents == "quit")
{
msg.TargetCommunicator = "dispatcher";
AbstractMessageDispatcher.GetInstance().PostMessage(msg);
break;
}
////////////////////////////////////////////////////////////////////////////////////
}
}
public void Stop()
{
ServiceMessage msg = ServiceMessage.MakeMessage(this.Name, this.Name, "quit");
this.PostMessage(msg);
}
//----< get and process message from client>----------------
protected override void ProcessMessages()
{
while (true)
{
ShowFiles sf = new ShowFiles();
ServiceMessage msg = bq.deQ();
Console.Write("\n {0} Recieved Message:\n", msg.TargetCommunicator);
Console.Write("\n Echo processing completed\n");
if (msg.Contents == "connect to server")
{
ClientURL = msg.ResourceName;
}
////////////////////////////////////////////////////////////////////////////////////////////
// client ask for category root in repositpry, find categories repository files belong to
// and send the msg back to client, msg contain categories
if (msg.ResourceName == "category")
{
List <string> Categories = new List <string>();
Categories = sf.FindCategories();
foreach (string cate in Categories)
{
ServiceMessage reply = ServiceMessage.MakeMessage("client-echo", "ServiceServer", cate, "Categories");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
}
///////////////////////////////////////////////////////////////////////////////////////////
// client require for files in the specified category
// server find files and send back
if (msg.ResourceName == "files in this category")
{
List <string> filesInCate = new List <string>();
filesInCate = sf.FindFiles(msg.Contents);
foreach (string file in filesInCate)
{
ServiceMessage reply = ServiceMessage.MakeMessage("client-echo", "ServiceServer", file, "files found in category");
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
}
///////////////////////////////////////////////////////////////////////////////////////////
//send the xml and text file content back
if (msg.ResourceName == "extract file")
{
ExtractFile ef = new ExtractFile();
string textfile = ef.TextFile(msg.Contents);
string xmlfile = ef.XmlFile(msg.Contents);
ServiceMessage reply1 = ServiceMessage.MakeMessage("client-echo", "ServiceServer", textfile, "textfile");
reply1.TargetUrl = msg.SourceUrl;
reply1.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher1 = AbstractMessageDispatcher.GetInstance();
dispatcher1.PostMessage(reply1);
ServiceMessage reply2 = ServiceMessage.MakeMessage("client-echo", "ServiceServer", xmlfile, "xmlfile");
reply2.TargetUrl = msg.SourceUrl;
reply2.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher2 = AbstractMessageDispatcher.GetInstance();
dispatcher2.PostMessage(reply2);
}
if (msg.Contents == "quit")
{
break;
}
}
}
//Note:The analyzer is showing the function lines as 328 not sure why for this function
void filedownloader(ServiceMessage msg,string filename)
{
long blockSize = 512;
try
{
FileStream fs = File.Open(@"..\..\DocumentVault\" + filename, FileMode.Open, FileAccess.Read);
int bytesRead = 0;
while (true)
{
long remainder = (int)(fs.Length - fs.Position);
if (remainder == 0)
break;
long size = Math.Min(blockSize, remainder);
byte[] block = new byte[size];
bytesRead = fs.Read(block, 0, block.Length);
ServiceMessage reply =
ServiceMessage.MakeMessage("client-echo", "echo", Encoding.ASCII.GetString(block), "download" + "," + filename);
reply.TargetUrl = msg.SourceUrl;
reply.SourceUrl = msg.TargetUrl;
AbstractMessageDispatcher dispatcher = AbstractMessageDispatcher.GetInstance();
dispatcher.PostMessage(reply);
}
fs.Close();
}
catch (Exception ex)
{
Console.Write("\n can't open {0} for writing - {1}", msg.Contents, ex.Message);
}
}
static void Main(string[] args)
{
Console.Write("\n Starting CommService Client");
Console.Write("\n =============================\n");
string ServerUrl = "http://localhost:8000/CommService";
Sender sender = null;
Console.Write("\n Press key to start client: ");
Console.ReadKey();
sender = new Sender();
sender.Connect(ServerUrl);
sender.Start();
string ClientUrl = "http://localhost:8001/CommService";
Receiver receiver = new Receiver(ClientUrl);
// Don't need to start receiver unless you want
// to send it messages, which we won't as all
// our messages go to the server
//receiver.Start();
EchoCommunicator echo = new EchoCommunicator();
echo.Name = "client-echo";
receiver.Register(echo);
echo.Start();
ServiceMessage msg1 =
ServiceMessage.MakeMessage("echo", "ServiceClient", "<root>some echo stuff</root>", "no name");
msg1.SourceUrl = ClientUrl;
msg1.TargetUrl = ServerUrl;
Console.Write("\n Posting message to \"{0}\" component", msg1.TargetCommunicator);
sender.PostMessage(msg1);
ServiceMessage msg2 =
ServiceMessage.MakeMessage("query", "ServiceClient", "<root>some query stuff</root>", "no name");
msg2.SourceUrl = ClientUrl;
msg2.TargetUrl = ServerUrl;
Console.Write("\n Posting message to \"{0}\" component", msg2.TargetCommunicator);
sender.PostMessage(msg2);
ServiceMessage msg3 =
ServiceMessage.MakeMessage("nav", "ServiceClient", "<root>some nav stuff</root>", "no name");
msg3.SourceUrl = ClientUrl;
msg3.TargetUrl = ServerUrl;
Console.Write("\n Posting message to \"{0}\" component", msg3.TargetCommunicator);
sender.PostMessage(msg3);
// wait for all server replies to be sent back
Console.Write("\n Wait for Server replies, then press a key to exit: ");
Console.ReadKey();
sender.Stop(); // this function sends a quit message to client-echo
sender.Wait();
echo.Stop();
echo.Wait();
receiver.Close();
Console.Write("\n\n");
}
//----< Post a message to the MessageDispatcher >----------------
public void PostMessage(ServiceMessage servMsg)
{
//Console.Write("\n CommService.PostMessage called with Message:");
//msg.ShowMessage();
dispatcher.PostMessage(servMsg);
}
public static ServiceMessage MakeMessage(string TargetCommunicator, string SourceCommunicator, string contents, string resName = "")
{
ServiceMessage msg = new ServiceMessage();
msg.TargetCommunicator = TargetCommunicator;
msg.SourceCommunicator = SourceCommunicator;
msg.ResourceName = resName;
msg.Contents = contents;
return msg;
}
