JGetMessage.cc File Reference

Auxiliary program to receive messages from ControlHost server. More...

#include <string>
#include <iostream>
#include <sstream>
#include <iomanip>
#include <set>
#include "JNet/JControlHost.hh"
#include "JSystem/JDateAndTime.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"

Go to the source code of this file.

Functions
int	main (int argc, const char *argv[])

Detailed Description

Auxiliary program to receive messages from ControlHost server.

The option -H <hostname>[:port] correponds to the hostname and the port of the server, respectively.
The options -t and -T correspond to the ControlHost tag(s), with subscriptions any and all, respectively.
Each message tag will be printed and for the latter also the message content.
The program will terminate when it receives message <stop>.

Author

mdejong

Definition in file JGetMessage.cc.

Function Documentation

main()

int main	(	int	argc,
		const char *	argv[] )

Definition at line 27 of file JGetMessage.cc.

{
  using namespace std;
  using namespace JPP;
 
  string    hostname;
  set<JTag> tagList;
  set<JTag> TagList;
  bool      date;
  int       debug;
  
  try {
 
    JParser<> zap("Auxiliary program to receive messages from ControlHost server.");
 
    zap['H'] = make_field(hostname, "host name of message srver")             = "localhost";
    zap['t'] = make_field(tagList,  "list of tags with subscription any")     = JPARSER::initialised();
    zap['T'] = make_field(TagList,  "list of tags with subscription all")     = JPARSER::initialised();
    zap['D'] = make_field(date,     "print date and time of message receipt");
    zap['d'] = make_field(debug)           = 3;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  if (tagList.empty() && TagList.empty()) {
    FATAL("No tags specified.");
  }
 
 
  JControlHost::Throw(true); 
  
  try {
 
    JControlHost in(hostname);
 
    {
      JSubscriptionList buffer;
 
      for (set<JTag>::const_iterator i = tagList.begin(); i != tagList.end(); ++i) {
        buffer.add(JSubscriptionAny(*i));
      }
      
      for (set<JTag>::const_iterator i = TagList.begin(); i != TagList.end(); ++i) {
        buffer.add(JSubscriptionAll(*i));
      }
 
      in.MyId("JGetMessage");
      in.Subscribe(buffer);
      in.SendMeAlways();
    }
 
 
    JPrefix      prefix;
    vector<char> buffer;
 
    for (const string stop("stop"); buffer.size() != stop.size() || string(buffer.data(), stop.size()) != stop; ) {
 
      in.WaitHead(prefix);
 
      buffer.resize(prefix.getSize());
      
      in.GetFullData(buffer.data(), buffer.size());
 
      if (date) {
        cout << getDateAndTime() << ' ';
      }
      
      cout << left << setw(8) << prefix.getTag() << ' ' << right << setw(8) << prefix.getSize();
 
      if (TagList.find(prefix) != TagList.end()) {
        cout << ' ' << string(buffer.data(), buffer.size());
      }
        
      cout << endl;
    }
  }    
  catch(const exception& error) {
    FATAL(error.what() << endl);
  }
 
  return 0;
}