static void WINAPI service_control(DWORD ctrlcode)
{
switch (ctrlcode) {
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
service_report_status(SERVICE_STOP_PENDING, 30);
svc_paused = 0;
SetEvent(sigterm_handle);
break;
case SERVICE_CONTROL_PARAMCHANGE: // Win2000/XP
service_report_status(svc_status.dwCurrentState, 0);
svc_paused = 0;
SetEvent(sighup_handle); // reload
break;
case SERVICE_CONTROL_PAUSE:
service_report_status(SERVICE_PAUSED, 0);
svc_paused = 1;
break;
case SERVICE_CONTROL_CONTINUE:
service_report_status(SERVICE_RUNNING, 0);
{
int was_paused = svc_paused;
svc_paused = 0;
SetEvent(was_paused ? sighup_handle : sigusr1_handle); // reload:recheck
}
break;
case SERVICE_CONTROL_INTERROGATE:
default: // unknown
service_report_status(svc_status.dwCurrentState, 0);
break;
}
}
static void WINAPI service_main(DWORD /*argc*/, LPSTR * argv)
{
char path[MAX_PATH], *p;
// Register control handler
svc_handle = RegisterServiceCtrlHandler(argv[0], service_control);
// Init service status
svc_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
service_report_status(SERVICE_START_PENDING, 10);
// Service started in \windows\system32, change to .exe directory
if (GetModuleFileNameA(NULL, path, sizeof(path)) && (p = strrchr(path, '\\'))) {
*p = 0; SetCurrentDirectoryA(path);
}
// Install exit handler
atexit(service_exit);
// Do the real work, service status later updated by daemon_detach()
daemon_winsvc_exitcode = svc_main_func(svc_main_argc, svc_main_argv);
exit(daemon_winsvc_exitcode);
// ... continued in service_exit()
}
int daemon_detach(const char * ident)
{
if (!svc_mode) {
if (ident) {
// Print help
FILE * f = ( isatty(fileno(stdout)) ? stdout
: isatty(fileno(stderr)) ? stderr : NULL);
if (f)
daemon_help(f, ident, "now detaches from console into background mode");
}
// Signal detach to parent
if (sig_event(EVT_DETACHED) != 1) {
if (!debugging())
return -1;
}
daemon_disable_console();
}
else {
// Signal end of initialization to service control manager
service_report_status(SERVICE_RUNNING, 0);
reopen_stdin = reopen_stdout = reopen_stderr = 1;
}
return 0;
}
// events from SCM and Windows comes here. Be responsive!!
void WINAPI serviceCtrlFunction( DWORD control )
{
switch( control ) {
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
service_report_status( SERVICE_STOP_PENDING, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
LOG_INFO << "Stopping service";
// signal stopping now
SetEvent( serviceStopEvent );
break;
case SERVICE_CONTROL_INTERROGATE:
// see below
break;
}
// report current status of service to SCM
service_report_status( serviceStatus.dwCurrentState, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
}
static void service_exit(void)
{
// Close signal events
int i;
for (i = 0; i < num_sig_handlers; i++)
CloseHandle(sig_events[i]);
num_sig_handlers = 0;
// Set exitcode
if (daemon_winsvc_exitcode) {
svc_status.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
svc_status.dwServiceSpecificExitCode = daemon_winsvc_exitcode;
}
// Report stopped
service_report_status(SERVICE_STOPPED, 0);
}
static void WINAPI service_main( DWORD argc, LPTSTR *argv ) {
try {
// set an emergency logger (debug view), is set in 'ImagePath' in the registry of the service description
_Wolframe::log::LogBackend::instance().setWinDebugLevel( winDbgLevel );
// read configuration (from the location passed in the command line arguments of the main, not the service_main)
_Wolframe::config::CmdLineConfig cmdLineCfg; // empty for a service with --service
cmdLineCfg.command = _Wolframe::config::CmdLineConfig::RUN_SERVICE;
const char *configFile = serviceConfig.c_str( ); // configuration comes from main thread
std::string configurationPath = boost::filesystem::path( configFile).branch_path().string();
_Wolframe::module::ModulesDirectory modDir( configurationPath);
_Wolframe::config::ApplicationConfiguration conf;
conf.addModules( &modDir );
_Wolframe::config::ApplicationConfiguration::ConfigFileType cfgType =
_Wolframe::config::ApplicationConfiguration::fileType( configFile, cmdLineCfg.cfgType );
if ( cfgType == _Wolframe::config::ApplicationConfiguration::CONFIG_UNDEFINED )
return;
if ( !conf.parseModules( configFile, cfgType ))
return;
if ( ! modDir.loadModules( conf.moduleList() ))
return;
if ( !conf.parse( configFile, cfgType ))
return;
// configuration file has been parsed successfully
// build the final configuration
conf.finalize( cmdLineCfg );
// create the final logger based on the configuration
_Wolframe::log::LogBackend::instance().setConsoleLevel( conf.loggerCfg->stderrLogLevel );
_Wolframe::log::LogBackend::instance().setLogfileLevel( conf.loggerCfg->logFileLogLevel );
_Wolframe::log::LogBackend::instance().setLogfileName( conf.loggerCfg->logFile );
_Wolframe::log::LogBackend::instance().setSyslogLevel( conf.loggerCfg->syslogLogLevel );
_Wolframe::log::LogBackend::instance().setSyslogFacility( conf.loggerCfg->syslogFacility );
_Wolframe::log::LogBackend::instance().setSyslogIdent( conf.loggerCfg->syslogIdent );
_Wolframe::log::LogBackend::instance().setEventlogLevel( conf.loggerCfg->eventlogLogLevel );
_Wolframe::log::LogBackend::instance().setEventlogLog( conf.loggerCfg->eventlogLogName );
_Wolframe::log::LogBackend::instance().setEventlogSource( conf.loggerCfg->eventlogSource );
// register the event callback where we get called by Windows and the SCM
serviceStatusHandle = RegisterServiceCtrlHandler( conf.serviceCfg->serviceName.c_str( ), serviceCtrlFunction );
if( serviceStatusHandle == 0 ) {
LOG_FATAL << "Unable to register service control handler function: " << _Wolframe::log::LogError::LogWinerror;
return;
}
// send "we are starting up now" to the SCM
service_report_status( SERVICE_START_PENDING, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
// register a stop event
serviceStopEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
if( serviceStopEvent == NULL ) {
LOG_FATAL << "Unable to create the stop event for the termination of the service: " << _Wolframe::log::LogError::LogWinerror;
service_report_status( SERVICE_STOPPED, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
return;
}
LOG_NOTICE << "Starting service";
// run server in background thread(s).
_Wolframe::ServerHandler handler( conf.handlerCfg, &modDir );
_Wolframe::net::server s( conf.serverCfg, handler );
boost::thread t( boost::bind( &_Wolframe::net::server::run, &s ));
// we are up and running now (hopefully), signal this to the SCM
service_report_status( SERVICE_RUNNING, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
// Sit and wait here for the stop event to happen, terminate then
WAIT_FOR_STOP_EVENT:
DWORD res = WaitForSingleObject( serviceStopEvent, DEFAULT_SERVICE_TIMEOUT );
switch( res ) {
case WAIT_OBJECT_0:
s.stop( );
// stop signal received, signal "going to stop" to SCM
service_report_status( SERVICE_STOP_PENDING, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
break;
case WAIT_TIMEOUT:
// we could do something periodic here
goto WAIT_FOR_STOP_EVENT;
case WAIT_ABANDONED:
// this is bad, not really sure how we could recover from this one. For
// now let's assume that stopping here is safer, so treat it like a successful
// event, but log the fact we run into that state
LOG_CRITICAL << "Waiting for stop event in service main resulted in WAIT_ABANDONED!";
break;
case WAIT_FAILED:
// error, stop now immediatelly
LOG_FATAL << "Waiting for stop event in service main failed, stopping now" << _Wolframe::log::LogError::LogWinerror;
s.stop( );
service_report_status( SERVICE_STOPPED, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
return;
}
// signal the SCM that we are done
LOG_NOTICE << "Stopped service";
service_report_status( SERVICE_STOPPED, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
}
catch (std::exception& e) {
LOG_FATAL << e.what( );
// any exception should signal the SCM that the service is down now
service_report_status( SERVICE_STOPPED, NO_ERROR, DEFAULT_SERVICE_TIMEOUT );
}
}
