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// -*- c++ -*-
//------------------------------------------------------------------------------
// Conn.cpp
//------------------------------------------------------------------------------
// $Id: Conn.cpp,v 1.5 2006/07/20 02:30:55 vlg Exp $
//------------------------------------------------------------------------------
// Copyright (c) 2003 by Vladislav Grinchenko
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version
// 2 of the License, or (at your option) any later version.
//------------------------------------------------------------------------------
// Created: Thu Apr 17 23:22:39 EDT 2003
//------------------------------------------------------------------------------
#include "Conn.h"
#include "LogServer.h"
#include "MonitorConn.h"
static const char sep[]="-------------------------------------------------";
int
Conn::
open ()
{
trace_with_mask("Conn::open",LSVRTRACE);
REACTOR->registerIOHandler (this, get_stream ().getHandler (),
ASSA::READ_EVENT);
DL((LSVR,"+--------------------------------+\n"));
DL((LSVR,"| Accepted new client connection |\n"));
DL((LSVR,"+--------------------------------+\n"));
return 0;
}
int
Conn::
handle_close (int /* fd */)
{
trace_with_mask("Conn::handle_close", LSVRTRACE);
DL((LSVR,"+---------------------+\n"));
DL((LSVR,"| Client disconnected |\n"));
DL((LSVR,"+---------------------+\n"));
/** Disconnect from observers
*/
if (m_observers.size ()) {
ASSA::Repository<MonitorConn>::const_iterator cit;
cit = m_observers.begin ();
while (cit != m_observers.end ()) {
(*cit++)->notify (NULL);
}
m_observers.clear ();
}
REPO->erase (this);
delete (this);
return 0;
}
int
Conn::
handle_read (int fd_)
{
trace_with_mask ("Conn::handle_read", LSVRTRACE);
if (get_stream ().getHandler () != fd_) {
return (-1);
}
if (m_wstate == wait_for_header) {
int preamble = 0;
m_msg_type = m_msg_size = 0;
get_stream () >> preamble >> m_msg_type >> m_msg_size;
if (preamble != 1234567890) {
DL((LSVRERROR,"Message stream is out of sync - Abort!\n"));
return -1;
}
DL((LSVR,"=> Detected Header\n"));
DL((LSVR,"rcvd: Preamble = %d\n", preamble));
DL((LSVR,"rcvd: Type = %d\n", m_msg_type));
DL((LSVR,"rcvd: Size = %d\n", m_msg_size));
switch (m_msg_type)
{
case SIGN_ON: m_wstate = wait_for_signon; break;
case SIGN_OFF: m_wstate = wait_for_signoff; break;
case LOG_MSG: m_wstate = wait_for_logmsg; break;
}
}
if (m_wstate == wait_for_signon) {
m_maxsize = 0;
DL((LSVR,"=> Incoming SIGN_ON message\n"));
Assure_exit (m_state == closed);
get_stream () >> m_maxsize >> m_app_name >> m_logfname;
DL((LSVR,"rcvd: MaxLogSize = %d, AppName = \"%s\"\n",
m_maxsize, m_app_name.c_str ()));
DL((LSVR,"rcvd: LogFileName = \"%s\"\n", m_logfname.c_str ()));
std::string path = LOGSERVER->get_log_dir () + "/" + m_logfname;
if (LOGSERVER->recycle ()) {
::unlink (path.c_str ());
}
m_sink.open (path.c_str (), std::ios::out | std::ios::app);
if (!m_sink) {
DL((LSVRERROR,"m_sink.open (\"%s\",...) = -1\n", path.c_str ()));
return -1;
}
m_state = opened;
m_wstate = wait_for_header;
REPO->push_back (this);
}
else if (m_wstate == wait_for_signoff) {
DL((LSVR,"=> Incoming SIGN_OFF message\n"));
Assure_exit (m_state == opened);
m_sink << std::flush;
m_sink.close ();
m_state = closed;
return -1;
}
else if (m_wstate == wait_for_logmsg) {
DL((LSVR,"=> Incoming LOG_MSG message\n"));
Assure_exit (m_state == opened);
std::string msg;
if (get_stream () >> msg) {
if (msg.length () != 0) {
DL((LSVR,"rcvs message:\n%s\n%s%s\n", sep, msg.c_str (), sep));
m_bytecount += msg.length ();
if (m_bytecount > m_maxsize) {
shift_logfile ();
}
}
else {
DL((LSVR,"rcvs EMPTY message!\n"));
Assure_exit (false);
}
m_sink << msg << std::flush;
if (m_observers.size ()) {
ASSA::Repository<MonitorConn>::const_iterator cit;
cit = m_observers.begin ();
while (cit != m_observers.end ()) {
(*cit++)->notify (msg.c_str ());
}
}
}
else {
DL((LSVRERROR,"Peer dropped connection!\n"));
m_sink << std::flush;
m_sink.close ();
DL((LSVR,"m_bytecount = %d\n", m_bytecount));
DL((LSVR,"m_maxsize = %d\n", m_maxsize));
}
m_wstate = wait_for_header;
}
return BYTES_LEFT_IN_SOCKBUF(get_stream ());
}
void
Conn::
shift_logfile ()
{
trace_with_mask("Conn::shift_logfile", LSVRTRACE);
m_sink << std::flush;
m_sink.close ();
m_bytecount = 0;
std::string oldfile = m_logfname + ".0";
::unlink (oldfile.c_str ());
::rename (m_logfname.c_str (), oldfile.c_str ());
m_sink.open (m_logfname.c_str (), std::ios::out | std::ios::app);
if (!m_sink) {
DL((LSVRERROR,"m_sink.open (\"%s\",...) = -1\n", m_logfname.c_str ()));
}
}
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