From 18b61341d3c0f597ef71af2dc33769277defe9d5 Mon Sep 17 00:00:00 2001 From: Peter Baumann Date: Sun, 25 Jul 2010 10:54:29 +0200 Subject: PB: removed old scratch file --- rasmgr/rasmgr_master_nb_hack.cc | 1007 --------------------------------------- 1 file changed, 1007 deletions(-) delete mode 100644 rasmgr/rasmgr_master_nb_hack.cc diff --git a/rasmgr/rasmgr_master_nb_hack.cc b/rasmgr/rasmgr_master_nb_hack.cc deleted file mode 100644 index 42e1cb4..0000000 --- a/rasmgr/rasmgr_master_nb_hack.cc +++ /dev/null @@ -1,1007 +0,0 @@ -/* -* This file is part of rasdaman community. -* -* Rasdaman community 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 3 of the License, or -* (at your option) any later version. -* -* Rasdaman community 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 rasdaman community. If not, see . -* -* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann / -rasdaman GmbH. -* -* For more information please see -* or contact Peter Baumann via . -/ -/** - * SOURCE: rasmgr_master_nb.cc - * - * MODULE: rasmgr - * CLASS: MasterComm - * - * PURPOSE: - * Main loop of master rasmgr - * - * COMMENTS: - * - MasterComm::processRequest() is the central dispatcher for rasmgr requests, recognising and executing them. - * -*/ - -#include -#include -#include - -#include "rasmgr_master.hh" -#include "rasmgr_config.hh" -#include "rasmgr_rascontrol.hh" -#include "rasmgr_users.hh" -#include "rasmgr_host.hh" -#include "rasmgr_localsrv.hh" -#include "rasmgr_srv.hh" - -using namespace std; - -#include "debug.hh" - - -// from rasmgr_localsrv.cc; should go to a central location -- PB 2003-nov-25 -extern char *now(); - -// rasserver error codes (see errtxts) -// FIXME: should go into a central include file / class -- PB 2003-nov-20 -#define MSG_OK 200 -#define MSG_OK_STR "Ok" -#define MSG_UNKNOWNSERVERTYPE 1001 -#define MSG_UNKNOWNSERVERTYPE_STR "Unknown server type" -#define MSG_UNKNOWNACCESSTYPE 1002 -#define MSG_UNKNOWNACCESSTYPE_STR "Unknown access type" -#define MSG_DATABASENOTFOUND 807 -#define MSG_DATABASENOTFOUND_STR "Database not found" -#define MSG_WRITETRANSACTION 806 -#define MSG_WRITETRANSACTION_STR "Write transaction in progress" -#define MSG_NOSUITABLESERVER 805 -#define MSG_NOSUITABLESERVER_STR "No suitable servers started" -#define MSG_SYSTEMOVERLOADED 801 -#define MSG_SYSTEMOVERLOADED_STR "System overloaded" -// the following code means: I got an error code which I don't know (FIXME: reconsider nr!) -#define MSG_ILLEGAL 999 -#define MSG_ILLEGAL_STR "Internal error: Illegal response code." - -// here I start collecting rasmgr protocol tokens to eventually gather them all in one include file -#define RASMGRPROT_EOL "\r\n" -#define RASMGRPROT_DOUBLE_EOL "\r\n\r\n" - -// time [secs] until a client can be freed from the pending request list after a fake request -#define WAITTIME_AFTER_FAKE 2 -// time increment [secs] of iterated timeout (see updateTime()) -#define WAITTIME_REPEATED 3 - - -MasterComm::MasterComm() - { commit=false; - allowMultipleWriteTransactions = false; - } - -MasterComm::~MasterComm() - { - } - -void MasterComm::Run() - { - ENTER("MasterComm::Run: enter." ); - - initListenSocket(config.getListenPort()); // connect/bind the central listen socket - // using IOSelector level here! - - initJobs(MAXJOBSMASTER); // init jobs structure (nothing with sockets here) - - allowMultipleWriteTransactions = config.allowMultipleWriteTransactions(); - - selector.setTimeout( config.getPollFrequency() , 0 ); - - VLOG << "Entering server mode, prepared to receive requests." << endl << endl; - - while(mayExit()==false) - { - TALK("MasterComm::Run: new request cycle, status before processing is:" ); - printStatus(); - - if(commit) - doCommit(); - - int answerLen=0; - - TALK("MasterComm::Run: (c) Waiting..."); - - // wait for incoming requests, using select() - int r=selector.waitForRequest(); // 0 is timeout, <0 error, >0 success - // again, IOSelector level here! - - TALK("MasterComm::Run: (d) It's ringing..." << r); - - localServerManager.cleanChild(); // sa fie - - if(r<0) // nothing to read - { - TALK("MasterComm::Run: (f1) it's a signal (or a socket failure)..."); - continue; - } - if(r==0) // timeout, nothing to read - { - TALK("MasterComm::Run: (f2) nothing, look for timeouts..."); - lookForTimeout(); - continue; - } - if(r>0) // something is pending - { - - TALK("MasterComm::Run: (e) Got request, r=" << r << "..."); - - // iterate over all jobs to see what we can read / reconnect (?) / write - dispatchWriteRequest(); // first this, to increase the chance to free a client - connectNewClients(); // wait for requests, using accept() - dispatchReadRequest(); // now read in new requests - - for(int i=0;iresult(); // print stop time to log - } - } - } - LEAVE("MasterComm::Run: leave." ); - } // Run() - -// keep connection open after processing request? -// ...according to request type and comm success, shall we keep socket open? -// Note: this is a bad hack, but I don't want to change the "answer" ret code of processRequest() unless I fully understand it -- PB 2003-jun-10 -static bool keepConnection; - -void MasterComm::processJob(NbJob ¤tJob) - { - ENTER( "MasterComm::processJob: enter." ); - - if(currentJob.isOperationPending()==false ) - { - LEAVE( "MasterComm::processJob: leave. isOperationPending=false" ); - return; - } - - if(currentJob.wasError()) // low-level comm error - { - TALK( "MasterComm::processJob: closing connection." ); - currentJob.closeConnection(); - LEAVE( "MasterComm::processJob: leave." ); - return; - } - - if(currentJob.isMessageOK() == false) - { - LEAVE( "MasterComm::processJob: leave. isMessageOK=false" ); - return; - } - - if(fillInBuffer(currentJob.getMessage())==false) // fill msg into answer buffer header + body - { - TALK( "MasterComm::processJob: closing connection." ); - currentJob.closeConnection(); - LEAVE( "MasterComm::processJob: leave. fillInBuffer=false" ); - return; - } - - // now we have the message in inBuffer, with header and body set correctly - - int answer = processRequest( currentJob ); - - int outLen = strlen(outBuffer); - - if(outLen && answer != 2) // sending the answer - // FIXME: what is answer==2 ? never happens! -- PB 2003-jun-10 - { - TALK( "MasterComm::processJob: init sending answer for outBuffer, set socket to write mode." ); - currentJob.initSendAnswer(outBuffer); - } - - if(outLen == 0) // no answer to send - { - TALK( "MasterComm::processJob: no answer to send, closing connection." ); - currentJob.closeConnection(); - } - - if( answer == 1 ) // means "delayedOperation" - // FIXME: according to processRequest, delOp is 0 !!! -- PB 2003-jun-10 - // ...and 1 comes back for POST rasservernewstatus - { // the only known until now - TALK( "MasterComm::processJob: delayedOp, therefore changeServerStatus()." ); - rasManager.changeServerStatus(body); - } - /* Two words about this delayedOperation. If a remote server crashes, the remote rasmgr - sends a message and does not wait for answer. But if the master rasmgr restarts - immediately the crashed server, it could come to a deadlock. Maybe not, but we - wish to avoid any possibility, so we close first the connection and then attempt - to restart the server. - */ - - // EXPERIMENTAL: close sockets as soon and as always as possible - // if (! keepConnection) // singleton request or comm error - // { - // TALK( "MasterComm::processJob: singleton request, closing connection." ); - // currentJob.closeConnection(); - // } - - LEAVE( "MasterComm::processJob: leave." ); - } // processJob() - - -// printClientAddr(): aux fct to print client address to designated stream -const char *getClientAddr( int mySocket ) -{ - const char *result = NULL; - struct sockaddr_in s; - socklen_t sockaddrSize = (socklen_t) sizeof(s); - if ( getpeername( mySocket, (struct sockaddr*)&s, &sockaddrSize ) != 0) - result = strerror(errno); - else - result = inet_ntoa(s.sin_addr); - return result; -} - -// process request which has been prepared in inBuffer -// if 'verbose' is enabled in configuration then requests will be logged. -// returns -// 0 normally (?) -// 1 for POST rasservernewstatus -// NB: keepConnection is static above -- bad hack, see there -int MasterComm::processRequest( NbJob ¤tJob ) -{ - ENTER( "MasterComm::processRequest: enter. inBuffer=" << inBuffer ); - - // inBuffer: header + body Ok, output in outBuffer, which is not initialized here - outBuffer[0]=0; // mark outBuffer as empty - int answer = 0; - // delayedOperation = 0; - - bool fake = false; // getfreeserver request really wants to allocate a new server? - - // --- this is the central dispatcher for rasmgr requests, recognising and executing them. - - if(isMessage("POST rasmgrslave")) - { - VLOG << now() << " slave rasmgr request from " - << getClientAddr( currentJob.getSocket() ) - << ": '" << body << "'..." << flush; - - hostmanager.postSlaveMGR(body,outBuffer); // prepare outBuffer from body for send to slave - keepConnection = false; // master mgr passes thru, it's singleton commo, so don't keep conn - // FIXME: is this really correct?? -- PB 2003-jun-10 - VLOG << "ok" << endl; - } - else if(isMessage("POST rasservernewstatus")) - { - // extract server status from msg body - char serverName[50]; - int newstatus = 0; - long dummy = 0; - serverName[0] = '\0'; // initialize in case sscanf() fails - - int result = sscanf( body, "%s %d %ld", serverName, &newstatus, &dummy); - if (result == 3) // we simply ignore malformed requests, reason see below - { - const char *statusText = NULL; - switch (newstatus) - { - case SERVER_DOWN: - statusText = SERVER_DOWN_TXT; - break; - case SERVER_AVAILABLE: - statusText = SERVER_AVAILABLE_TXT; - break; - case SERVER_REGULARSIG: - statusText = SERVER_REGULARSIG_TXT; - break; - case SERVER_CRASHED: - statusText = SERVER_CRASHED_TXT; - break; - default: - statusText = "(unknown message flag)"; - break; - } - if (newstatus != SERVER_REGULARSIG) // don't blow up the log file with "still alive" signals - { - VLOG << now() << " status info from server " << serverName - << " @ " << getClientAddr( currentJob.getSocket() ) - << ": '" << statusText << "'...ok" << endl; - } - - keepConnection = false; // singleton msg slave -> master - answer = 1; - } - else // malformed request - { - VLOG << now() << " Error: malformed request (ignoring it) from " - << getClientAddr( currentJob.getSocket() ) - << ": '" << body << "'" << endl; - } - } - else if( (fake = isMessage("POST getfreeserver2")) || isMessage("POST getfreeserver")) - { - VLOG << now() << " client request from " - << getClientAddr( currentJob.getSocket() ) - << ": " << "'get server'..." << flush; - - int rc = getFreeServer(fake); // returns std rasdaman errors -- FIXME: error ignored! - keepConnection = (rc == MSG_OK) ? true : false; // 200 is "ok" - VLOG << "ok" << endl; - - - } - else if(isMessage("POST rascontrol")) - { - VLOG << now() << " rascontrol request from " - << getClientAddr( currentJob.getSocket() ) - << ": '" << body << "'..." << flush; - - if(authorization.acceptEntry(header)) - { - rascontrol.processRequest(body,outBuffer); - keepConnection = true; // rascontrol connection accepted, so keep it - VLOG << "ok" << endl; - } - else - { - answerAccessDenied(); - keepConnection = false; // this is a final answer, don't keep conn open afterwards - VLOG << "denied." << endl; - } - } - - LEAVE( "MasterComm::processRequest: leave. answer=" << answer << ", keepConnection=" << keepConnection ); - return answer; -} // processRequest() - -// fillInBuffer: fill parameter string passed into message header and body (both global) -// separator is a double newline -// FIXME: unstable and weird programming, improve! -- PB 2003-jun-10 -// input: -// s message input string -// returns: -// true filled buffer properly -// false NULL body string -// inBuffer (global buffer) set to s; header string part properly NULL terminated in inBuffer -// body (global ptr) set to beginning of message body in inBuffer -// header (global ptr) set to beginning of inBuffer -bool MasterComm::fillInBuffer(const char *s) -{ - strcpy(inBuffer,s); - header=inBuffer; // set header to begining of msg buffer - body=strstr(inBuffer, RASMGRPROT_DOUBLE_EOL ); // find double EOL, this is where body starts - if(body == NULL) // not found? this means a protocol syntax error - { - TALK( "MasterComm::fillInBuffer: Error in rasmgr protocol encountered (2xEOL missing). msg=" << inBuffer ); - return false; // only if client is stupid - } - - *body=0; // terminate header (!) string - body+= strlen( RASMGRPROT_DOUBLE_EOL ); // let body start after this double newline - - return true; -} - -// save config and auth file; deprecated -void MasterComm::doCommit() -{ - if(config.isTestModus()==false) - { - TALK( "MasterComm::doCommit: deprecated, should not be called any longer." ); -#if 0 // now done by saveCommand() directly - if(commitAuthOnly==false) - { VLOG << "Save configuration file..."; - if(config.saveConfigFile()) VLOG << "OK" << std::endl; - else VLOG << "Failed" << std::endl; - } - - VLOG << "Save authorization file..."; - if(authorization.saveAuthFile()) VLOG << "OK" << std::endl; - else VLOG << "Failed" << std::endl; -#endif - } - else - { std::cout<<"Save requested, but not permitted during test modus!"< [RPC|HTTP|RNP] [rw|ro] -// where the flags are NOT case sensitive -// returns: standard rasdasman error codes -// 200 (ok), 801, 805, 999, ... -int MasterComm::getFreeServer(bool fake) -{ - // creates too large log files, so omit in production: - // BenchmarkTimer *freeServerTimePtr = new BenchmarkTimer("Get free server"); - - char databaseName[100]; - char serverType[10]; - char serverName[100]; // name of rasserver found, if any - char accessType[5]; - char prevID[200]="(none)"; - - ENTER("MasterComm::getFreeServer: enter. fake=" << fake << ", body="<3) - clientID.init(prevID); - - TALK("GetFreeServer: db = " << databaseName << ", requested server type = " << serverType << ", access type = " << accessType << ", clientID="< " << cbs ); - cout << "Error: no server available, error code: " << cbs << endl; - answCode = cbs; - break; - } - if( fake == false) // server to be allocated? - { - // mark server found as unavailable to others - r.setNotAvailable(); - // set transaction mode requested - if(writeTransaction==true) - r.startWriteTransaction(db); // nothing real happens, no error can occur - else - r.startReadTransaction(db); // nothing real happens, no error can occur - TALK("MasterComm::getFreeServer: You have the server."); - // answCode is same as initialised if we come here - } - sprintf(answerString,"%s %ld %s ",r.getHostNetwName(),r.getPort(),authorization.getCapability(r.getName(),databaseName,!writeTransaction) ); - // remember server name - strncpy( serverName, r.getName(), sizeof(serverName) ); -; - TALK( "answerString=" << answerString ); - break; - } - } - } // for - - // any free server found? - if(countSuitableServers == 0) - { - cout << "Error: no suitable free server available." << endl; - answCode = MSG_NOSUITABLESERVER; - break; - } - - // no answer string provided -> no server available - // oops?? why not uniformly check against answCode? -- PB 2003-nov-20 - if(answerString[0]==0) - { - cout << "Error: cannot find any free server; answer code: " << answCode << " -> "; - answCode = MSG_SYSTEMOVERLOADED; - cout << answCode << endl; - break; - } - - } while(0); // see comment at start of "loop" - - answText = convertAnswerCode(answCode); - - if(answCode == MSG_OK) - sprintf(outBuffer,"HTTP/1.1 %d %s\r\nContent-type: text/plain\r\nContent-length: %d\r\n\r\n%s",answCode,answText,strlen(answerString)+1,answerString); - else - { - sprintf(outBuffer,"HTTP/1.1 %d %s\r\nContent-type: text/plain\r\nContent-length: %d\r\n\r\n%d %s",400,"Error",strlen(answText)+1,answCode,answText); - clientQueue.put(clientID, (const char*)databaseName, sType, answCode); - } - - // creates too large log files, so omit in production: - // freeServerTimePtr->result(); // print time elapsed - - LEAVE("MasterComm::getFreeServer: leave. answCode=" << answCode << ", server=" << serverName << ", outBuffer=" << outBuffer ); - return answCode; //strlen(outBuffer)+1; -} // getFreeServer() - -// convertAnswerCode: convert numeric answer code to error text for selected errors + OK -// input: -// code numeric error code, cf. errtxts -// returns: -// answer ptr to static error text -const char* MasterComm::convertAnswerCode(int code) -{ - const char *answer = MSG_ILLEGAL_STR; // return value, initialized to "illegal" - switch(code) - { - case MSG_OK: - answer = MSG_OK_STR; - break; - case MSG_UNKNOWNSERVERTYPE: - answer = MSG_UNKNOWNSERVERTYPE_STR; - break; - case MSG_UNKNOWNACCESSTYPE: - answer = MSG_UNKNOWNACCESSTYPE_STR; - break; - case MSG_DATABASENOTFOUND: - answer = MSG_DATABASENOTFOUND_STR; - break; - case MSG_WRITETRANSACTION: - answer = MSG_WRITETRANSACTION_STR; - break; - case MSG_NOSUITABLESERVER: - answer = MSG_NOSUITABLESERVER_STR; - break; - case MSG_SYSTEMOVERLOADED: - answer = MSG_SYSTEMOVERLOADED_STR; - break; - default: - // cout<<"Default value not allowed ="<activ = false; - ClientEntry newClient(clientID, dbName, serverType, errorCode); - newClient.activ = true; - newClient.updateTime(); - clients.push_back(newClient); - TALK("ClientQueue::put, known client db=" << dbName << ", serverType=" << serverType << ", but different request: id="<