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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>
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<table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#aaaaaa"><tr valign=bottom><td><a href="admin_service.cpp"><IMG SRC="http://www.nevrax.org/inc/img/picto-up.gif" ALT="[BACK]" BORDER="0" WIDTH="14" HEIGHT="13"></a> <b>Return to <A HREF="admin_service.cpp">admin_service.cpp</A>
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Revision <B>1.4</B>, <i>Fri May 18 16:51:33 2001 UTC</i> (14 months ago) by <i>lecroart</i>
<BR>Branch: <b>MAIN</b>
<BR>Changes since <b>1.3: +405 -101
lines</b><PRE>
ADDED: work in progress. added gtk
</PRE>
</td></tr></table><HR noshade><PRE>/** \file admin_service.cpp
* Admin Service (AS)
*
* $Id: admin_service.cpp,v 1.4 2001/05/18 16:51:33 lecroart Exp $
*
*/
/* Copyright, 2000 Nevrax Ltd.
*
* This file is part of NEVRAX NeL Network Services.
* NEVRAX NeL Network Services 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, or (at your option)
* any later version.
*
* NEVRAX NeL Network Services is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NEVRAX NeL Network Services; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include <string>
#include <list>
#include "nel/net/service.h"
#include "nel/misc/debug.h"
#include "nel/misc/config_file.h"
#include "nel/net/net_manager.h"
using namespace std;
using namespace NLMISC;
using namespace NLNET;
////////////////////////
struct CService
{
CService () : Id(0xFFFFFFFF), Ready(false), Connected(false), InConfig(false) { }
uint32 Id; /// uint32 to identify the service
string ServiceAlias; /// alias of the service used in the AES and AS to find him (unique per AES)
string ShortName; /// name of the service in short format ("NS" for example)
string LongName; /// name of the service in long format ("naming_service")
bool Ready; /// true if the service is ready
bool Connected; /// true if the service is connected to the AES
bool InConfig; /// true if the service is in the configuration
};
typedef list<CService> TServices;
typedef list<CService>::iterator SIT;
struct CAdminExecutorService
{
CAdminExecutorService () : Id(NextId++), SockId(NULL), Connected(false) { }
TSockId SockId; /// connection to the AES
uint32 Id; /// uint32 to identify the AES where the service is running
string ServerAlias; /// name of the layer4 connection, used to send message to this AES
string ServerAddr; /// address in a string format (only the ip)
bool Connected; /// true if the AES is connected
TServices Services;
vector<string> ServiceAliasList;
SIT findService (uint32 sid, bool asrt = true)
{
SIT sit;
for (sit = Services.begin(); sit != Services.end(); sit++)
if ((*sit).Id == sid)
break;
if (asrt)
nlassert (sit != Services.end());
return sit;
}
private:
static uint32 NextId;
};
uint32 CAdminExecutorService::NextId = 1;
typedef list<CAdminExecutorService> TAdminExecutorServices;
typedef list<CAdminExecutorService>::iterator AESIT;
TAdminExecutorServices AdminExecutorServices;
/////////////////
AESIT findAdminExecutorService (uint32 aesid, bool asrt = true)
{
AESIT aesit;
for (aesit = AdminExecutorServices.begin(); aesit != AdminExecutorServices.end(); aesit++)
if ((*aesit).Id == aesid)
break;
if (asrt)
nlassert (aesit != AdminExecutorServices.end());
return aesit;
}
AESIT findAdminExecutorService (string ServerAlias, bool asrt = true)
{
AESIT aesit;
for (aesit = AdminExecutorServices.begin(); aesit != AdminExecutorServices.end(); aesit++)
if ((*aesit).ServerAlias == ServerAlias)
break;
if (asrt)
nlassert (aesit != AdminExecutorServices.end());
return aesit;
}
void displayServices ()
{
for (AESIT aesit = AdminExecutorServices.begin(); aesit != AdminExecutorServices.end(); aesit++)
{
for (SIT sit = (*aesit).Services.begin(); sit != (*aesit).Services.end(); sit++)
{
nlinfo ("> %s %s %s %d %d", (*aesit).SockId->asString().c_str(), (*sit).ShortName.c_str(), (*sit).LongName.c_str(), (*aesit).Id, (*sit).Id);
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////// SCRIPT MANAGER /////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
bool ScriptRunning = false;
string ScriptName;
uint32 ScriptPos;
void doNextScriptStep ()
{
nlassert (ScriptRunning);
// get the script
try
{
CConfigFile::CVar &script = IService::ConfigFile.getVar(ScriptName);
// check the position
if (ScriptPos*2 >= (uint32)script.size())
{
ScriptRunning = false;
nlinfo("end of the script");
// todo send that the script is finish to the admin
return;
}
// get the script line
string serverAlias;
string serviceAlias;
try
{
serverAlias = script.asString (ScriptPos*2);
serviceAlias = script.asString (ScriptPos*2+1);
}
catch(EBadSize &)
{
nlwarning ("script '%s' not contains a good number of entries (must be a multiple of 2)", ScriptName.c_str());
ScriptRunning = false;
return;
}
AESIT aesit = findAdminExecutorService (serverAlias, false);
if (aesit == AdminExecutorServices.end())
{
ScriptRunning = false;
nlwarning("don't find the server");
return;
}
// send the resquest to the AES
CMessage msgout (CNetManager::getSIDA((*aesit).ServerAlias), "STARTS");
msgout.serial (serviceAlias);
CNetManager::send ((*aesit).ServerAlias, msgout);
ScriptPos++;
}
catch(EUnknownVar&)
{
nlwarning ("script '%s' not found", ScriptName.c_str());
ScriptRunning = false;
return;
}
}
void initScript(string scriptName)
{
if (ScriptRunning)
{
nlwarning("already running a script, reset it");
ScriptRunning = false;
}
try
{
CConfigFile::CVar &script = IService::ConfigFile.getVar(scriptName);
for (sint i = 0 ; i < script.size (); i+=2)
{
string serverAlias = script.asString(i);
AESIT aesit = findAdminExecutorService (serverAlias, false);
if (aesit == AdminExecutorServices.end())
{
nlwarning("aes not running, can't run the script");
return;
}
}
}
catch(EConfigFile &)
{
nlwarning ("bad config file");
return;
}
ScriptName = scriptName;
ScriptPos = 0;
ScriptRunning = true;
doNextScriptStep();
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////// CONNECTION TO THE AES ///////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
static void cbExecuteSystemCommandResult (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
vector<string> result;
msgin.serialCont (result);
nlinfo("command result");
for (uint i = 0; i < result.size(); i++)
{
printf ("%s", result[i].c_str());
}
nlinfo("end of command result");
}
static void cbServiceList (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
/* // get the service list from the admin exec and send the list to all admin client
CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
aes->Services.clear();
CMessage msgout (CNetManager::getSIDA ("AS"), "SL");
uint32 nbaes = 1;
msgout.serial (nbaes);
msgout.serial (aes->Id);
uint32 nbs;
msgin.serial (nbs);
msgout.serial (nbs);
for (uint32 i = 0; i < nbs; i++)
{
uint32 sid;
msgin.serial(sid);
aes->Services.push_back (CService(sid));
CService *s = &(aes->Services.back());
msgin.serial(s->ShortName, s->LongName, s->Ready);
msgout.serial (s->Id, s->ShortName, s->LongName, s->Ready);
}
CNetManager::send ("AS", msgout, 0);
displayServices ();
*/}
static void cbServiceAliasList (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
// get the service list from the admin exec and send the list to all admin client
CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
aes->ServiceAliasList.clear ();
msgin.serialCont (aes->ServiceAliasList);
CMessage msgout (CNetManager::getSIDA ("AS"), "SAL");
msgout.serial (aes->Id);
msgout.serialCont (aes->ServiceAliasList);
CNetManager::send ("AS", msgout, 0);
nlinfo("new service alias list");
}
static void cbServiceIdentification (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
uint32 sid;
msgin.serial (sid);
SIT sit = aes->findService(sid);
msgin.serial ((*sit).ShortName, (*sit).LongName);
nlinfo ("*:%d:%d is identified to be '%s' '%s'", aes->Id, sid, (*sit).ShortName.c_str(), (*sit).LongName.c_str());
// broadcast the message to all admin client
CMessage msgout (CNetManager::getSIDA ("AS"), "SID");
msgout.serial (aes->Id, sid, (*sit).ShortName, (*sit).LongName);
CNetManager::send ("AS", msgout, 0);
}
static void cbServiceReady (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
uint32 sid;
msgin.serial (sid);
SIT sit = aes->findService(sid);
(*sit).Ready = true;
nlinfo ("*:%d:%d is ready", aes->Id, sid);
// broadcast the message to all admin client
CMessage msgout (CNetManager::getSIDA ("AS"), "SR");
msgout.serial (aes->Id, sid);
CNetManager::send ("AS", msgout, 0);
// if we are in a script execution, continue
if (ScriptRunning)
doNextScriptStep();
}
static void cbServiceConnection (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
/* CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
uint32 sid;
msgin.serial (sid);
nlinfo ("*:%d:%d connected", aes->Id, sid);
aes->Services.push_back (CService(sid));
// broadcast the message to all admin client
CMessage msgout (CNetManager::getSIDA ("AS"), "SC");
msgout.serial (aes->Id, sid);
CNetManager::send ("AS", msgout, 0);
*/}
static void cbServiceDisconnection (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
uint32 sid;
msgin.serial (sid);
nlinfo ("*:%d:%d disconnected", aes->Id, sid);
SIT sit = aes->findService(sid);
// broadcast the message to all admin client
CMessage msgout (CNetManager::getSIDA ("AS"), "SD");
msgout.serial (aes->Id, (*sit).Id);
CNetManager::send ("AS", msgout, 0);
aes->Services.erase (sit);
}
// i'm connected to a new admin executor service
void cbAESConnection (const string &serviceName, TSockId from, void *arg)
{
AESIT aesit = findAdminExecutorService (serviceName);
CAdminExecutorService *aes = &(*aesit);
// set the appid to find the aes in O(1)
from->setAppId ((uint64)aes);
aes->Connected = true;
nlinfo ("*:%d:* connected", aes->Id);
/*
// broadcast the message that an admin exec is connected to all admin client
CMessage msgout (CNetManager::getSIDA ("AS"), "AESC");
msgout.serial (aes->Id);
CNetManager::send ("AS", msgout, 0);
*/
// broadcast the new state of this AES
CMessage msgout (CNetManager::getSIDA ("AS"), "AES_LIST");
uint32 nbaes = 1;
msgout.serial (nbaes);
msgout.serial (aes->Id, aes->ServerAlias, aes->ServerAddr, aes->Connected);
CNetManager::send ("AS", msgout, 0);
}
// i'm disconnected to an admin executor service
void cbAESDisconnection (const string &serviceName, TSockId from, void *arg)
{
// get the aes with the appid
CAdminExecutorService *aes = (CAdminExecutorService*) from->appId();
aes->Connected = false;
nlinfo ("*:%d:* disconnected", aes->Id);
/*
// broadcast the message to all admin client that an admin exec is disconnected
CMessage msgout (CNetManager::getSIDA ("AS"), "AESD");
msgout.serial (aes->Id);
CNetManager::send ("AS", msgout, 0);
*/
// broadcast the new state of this AES
CMessage msgout (CNetManager::getSIDA ("AS"), "AES_LIST");
uint32 nbaes = 1;
msgout.serial (nbaes);
msgout.serial (aes->Id, aes->ServerAlias, aes->ServerAddr, aes->Connected);
CNetManager::send ("AS", msgout, 0);
}
static void cbLog (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
// received an answer for a command, give it to all admin client
// broadcast the message to the admin service
CMessage msgout (CNetManager::getSIDA ("AS"), "LOG");
string log;
msgin.serial (log);
msgout.serial (log);
CNetManager::send ("AS", msgout, 0);
}
TCallbackItem AESCallbackArray[] =
{
{ "ESCR", cbExecuteSystemCommandResult },
{ "SL", cbServiceList },
{ "SID", cbServiceIdentification },
{ "SR", cbServiceReady },
{ "SC", cbServiceConnection },
{ "SD", cbServiceDisconnection },
{ "SAL", cbServiceAliasList },
{ "LOG", cbLog },
};
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////// CONNECTION TO THE CLIENT ////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
void errorMessage(string message, TSockId from, CCallbackNetBase &netbase)
{
CMessage msgout (netbase.getSIDA (), "ERR");
msgout.serial (message);
netbase.send (msgout, from);
}
//
// A new admin client is connected.
//
void clientConnection (const string &serviceName, TSockId from, void *arg)
{
// new client, send him all out info about services
nlinfo ("client %s is connected", from->asString().c_str());
//
// send the list of all the aes
//
CMessage msgout2 (CNetManager::getSIDA ("AS"), "AES_LIST");
AESIT aesit;
uint32 nbaes = (uint32)AdminExecutorServices.size();
msgout2.serial (nbaes);
for (aesit = AdminExecutorServices.begin(); aesit != AdminExecutorServices.end(); aesit++)
{
// send info about the AES
msgout2.serial ((*aesit).Id, (*aesit).ServerAlias, (*aesit).ServerAddr, (*aesit).Connected);
}
CNetManager::send ("AS", msgout2, from);
//
// send the list of all services
//
CMessage msgout (CNetManager::getSIDA ("AS"), "SERVICE_LIST");
nbaes = (uint32)AdminExecutorServices.size();
msgout.serial (nbaes);
for (aesit = AdminExecutorServices.begin(); aesit != AdminExecutorServices.end(); aesit++)
{
msgout.serial ((*aesit).Id);
uint32 nbs = (uint32)(*aesit).Services.size();
msgout.serial (nbs);
for (SIT sit = (*aesit).Services.begin(); sit != (*aesit).Services.end(); sit++)
{
// send info about services of the AES
msgout.serial ((*sit).Id, (*sit).ServiceAlias, (*sit).ShortName, (*sit).LongName);
msgout.serial ((*sit).Ready, (*sit).Connected, (*sit).InConfig);
}
}
CNetManager::send ("AS", msgout, from);
//
// send service alias list
//
for (aesit = AdminExecutorServices.begin(); aesit != AdminExecutorServices.end(); aesit++)
{
CMessage msgout2 (CNetManager::getSIDA ("AS"), "SAL");
msgout2.serial ((*aesit).Id);
msgout2.serialCont ((*aesit).ServiceAliasList);
CNetManager::send ("AS", msgout2, from);
}
}
static void cbExecuteScript (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
string script;
msgin.serial (script);
initScript (script);
}
static void cbExecuteSystemCommand (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
string command;
uint32 aesid;
msgin.serial (aesid);
msgin.serial (command);
AESIT aesit = findAdminExecutorService (aesid, false);
if (aesit == AdminExecutorServices.end())
{
// don't find the aes, send an error message
errorMessage ("couldn't execute command, as didn't find the aes", from, netbase);
return;
}
// send the resquest to the AES
CMessage msgout (CNetManager::getSIDA((*aesit).ServerAlias), "SYS");
msgout.serial (command);
CNetManager::send ((*aesit).ServerAlias, msgout);
}
static void cbStartService (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
string serviceName;
uint32 aesid;
msgin.serial (aesid);
msgin.serial (serviceName);
AESIT aesit = findAdminExecutorService (aesid, false);
if (aesit == AdminExecutorServices.end())
{
// don't find the aes, send an error message
errorMessage ("couldn't start service, as didn't find the aes", from, netbase);
return;
}
// send the resquest to the AES
CMessage msgout (CNetManager::getSIDA((*aesit).ServerAlias), "STARTS");
msgout.serial (serviceName);
CNetManager::send ((*aesit).ServerAlias, msgout);
}
static void cbStopService (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
uint32 aesid, sid;
msgin.serial (aesid);
msgin.serial (sid);
AESIT aesit = findAdminExecutorService (aesid, false);
if (aesit == AdminExecutorServices.end())
{
errorMessage ("couldn't stop service, as didn't find the aes", from, netbase);
// don't find the aes, send an error message
return;
}
SIT sit = (*aesit).findService (sid, false);
if (sit == (*aesit).Services.end())
{
// don't find the s, send an error message
errorMessage ("couldn't stop service, as didn't find the service", from, netbase);
return;
}
// send the resquest to the AES
CMessage msgout (CNetManager::getSIDA((*aesit).ServerAlias), "STOPS");
msgout.serial (sid);
CNetManager::send ((*aesit).ServerAlias, msgout);
}
static void cbExecCommand (CMessage& msgin, TSockId from, CCallbackNetBase &netbase)
{
uint32 aesid, sid;
string command;
msgin.serial (aesid);
msgin.serial (sid);
msgin.serial (command);
AESIT aesit = findAdminExecutorService (aesid, false);
if (aesit == AdminExecutorServices.end())
{
errorMessage ("couldn't stop service, as didn't find the aes", from, netbase);
// don't find the aes, send an error message
return;
}
SIT sit = (*aesit).findService (sid, false);
if (sit == (*aesit).Services.end())
{
// don't find the s, send an error message
errorMessage ("couldn't stop service, as didn't find the service", from, netbase);
return;
}
// send the resquest to the AES
CMessage msgout (CNetManager::getSIDA((*aesit).ServerAlias), "EXEC_COMMAND");
msgout.serial (sid);
msgout.serial (command);
CNetManager::send ((*aesit).ServerAlias, msgout);
}
TCallbackItem ClientCallbackArray[] =
{
{ "SYS", cbExecuteSystemCommand },
{ "EXEC", cbExecuteScript },
{ "STARTS", cbStartService },
{ "STOPS", cbStopService },
{ "EXEC_COMMAND", cbExecCommand },
};
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////// SERVICE IMPLEMENTATION //////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////
class CAdminService : public IService
{
public:
/// Init the service, load the universal time.
void init ()
{
DebugLog->addNegativeFilter ("L0:");
DebugLog->addNegativeFilter ("L1:");
DebugLog->addNegativeFilter ("L2:");
CNetManager::setConnectionCallback ("AS", clientConnection, NULL);
//
// Get the list of AESHosts, add in the structures and create connection to all AES
//
CConfigFile::CVar &host = ConfigFile.getVar ("AESHosts");
for (sint i = 0 ; i < host.size (); i+=2)
{
string serverAlias = host.asString(i);
string serverAddr = host.asString(i+1);
// add to the list
CAdminExecutorService aes;
aes.ServerAlias = serverAlias;
aes.ServerAddr = serverAddr;
AdminExecutorServices.push_back (aes);
// connect to the AES
CNetManager::setConnectionCallback (serverAlias, cbAESConnection, NULL);
CNetManager::setDisconnectionCallback (serverAlias, cbAESDisconnection, NULL);
CNetManager::addClient (serverAlias, serverAddr+":49996");
CNetManager::addCallbackArray (serverAlias, AESCallbackArray, sizeof (AESCallbackArray)/sizeof(AESCallbackArray[0]));
}
//
// Get the list of services in the shard
//
CConfigFile::CVar &serv = ConfigFile.getVar ("Services");
for (i = 0 ; i < serv.size (); i+=2)
{
string serverAlias = serv.asString(i);
string serviceAlias = serv.asString(i+1);
AESIT aesit = findAdminExecutorService (serverAlias);
// add new AES in the list
CService s;
s.ServiceAlias = serviceAlias;
s.InConfig = true;
(*aesit).Services.push_back (s);
}
}
bool update ()
{
return true;
}
};
// AS is a server connection to the admin client
// AESAS is a client connection to the admin executor
/// Naming Service
NLNET_SERVICE_MAIN (CAdminService, "AS", "admin_service", 49995, ClientCallbackArray);
</PRE>
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