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="<