#include <SherpackFetcher.h>

Public Member Functions
const char *	classname () const

int	CopyFile (std::string pathstring)

int	Fetch ()

	SherpackFetcher (edm::ParameterSet const &)

	~SherpackFetcher ()

Private Attributes
bool	FetchSherpack

std::string	SherpackChecksum

std::string	SherpackLocation

std::string	SherpaPath

std::string	SherpaProcess

Detailed Description

Definition at line 20 of file SherpackFetcher.h.

Constructor & Destructor Documentation

spf::SherpackFetcher::SherpackFetcher ( edm::ParameterSet const & pset )

Definition at line 5 of file SherpackFetcher.cc.

References edm::ParameterSet::exists(), FetchSherpack, edm::ParameterSet::getParameter(), SherpackChecksum, SherpackLocation, SherpaPath, SherpaProcess, and AlCaHLTBitMon_QueryRunRegistry::string.

 {
     if (!pset.exists("SherpaProcess")) SherpaProcess="";
       else SherpaProcess=pset.getParameter<std::string>("SherpaProcess");
     if (!pset.exists("SherpackLocation")) SherpackLocation="";
       else SherpackLocation=pset.getParameter<std::string>("SherpackLocation");
     if (!pset.exists("SherpackChecksum")) SherpackChecksum="";
       else SherpackChecksum=pset.getParameter<std::string>("SherpackChecksum");
     if (!pset.exists("FetchSherpack")) FetchSherpack=false;
       else FetchSherpack=pset.getParameter<bool>("FetchSherpack");
     if (!pset.exists("SherpaPath")) SherpaPath="";
       else SherpaPath=pset.getParameter<std::string>("SherpaPath");
 
 }

spf::SherpackFetcher::~SherpackFetcher ( )

Definition at line 102 of file SherpackFetcher.cc.

103 {

104 }

Member Function Documentation

const char* spf::SherpackFetcher::classname ( ) const

inline

Definition at line 26 of file SherpackFetcher.h.

26 { return "SherpackFetcher"; }

int spf::SherpackFetcher::CopyFile ( std::string pathstring )

Definition at line 86 of file SherpackFetcher.cc.

References edmPickEvents::command, gather_cfg::cout, edm::hlt::Exception, pipe::pipe(), and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by Fetch().

 {
   //No need to backwards compatibility with the FnFileGet method, throw exception if only the relative path is given
   if (  (pathstring.find("slc6_amd64_gcc")==0) || (pathstring.find("slc5_amd64_gcc")==0) ){
     throw cms::Exception("SherpaInterface") << "Old method of sherpack retrieving used, please use /cvmfs to store files and specify the full path to the sherpack directory";
   }
   std::cout << "Trying to copy file " << pathstring << std::endl;
   std::string command="cp " +pathstring + " .";
   FILE *pipe = popen(command.c_str(), "r");
   if(!pipe)
   throw cms::Exception("SherpaInterface") << "failed to copy Sherpack ";
   pclose(pipe);
   return 1;
 }

int spf::SherpackFetcher::Fetch ( )

Definition at line 20 of file SherpackFetcher.cc.

References CopyFile(), gather_cfg::cout, edm::hlt::Exception, FetchSherpack, mergeVDriftHistosByStation::file, gen::k, spu::md5_File(), cmsHarvester::path, SherpackChecksum, SherpackLocation, SherpaPath, SherpaProcess, AlCaHLTBitMon_QueryRunRegistry::string, spu::Untar(), and spu::Unzip().

Referenced by SherpaHadronizer::SherpaHadronizer().

 {
 
   std::string option  = "-c";
   std::string constr = "`cmsGetFnConnect frontier://smallfiles`";
   std::string sherpack = "sherpa_" + SherpaProcess + "_MASTER.tgz";
   std::string sherpackunzip = "sherpa_" + SherpaProcess + "_MASTER.tar";
   std::string path = SherpackLocation + "/" + sherpack;
   
   if(FetchSherpack == true){
     std::cout << "SherpackFetcher: Trying to fetch the Sherpack " << sherpack << std::endl;
     int res=-1;
     
     res =CopyFile(path);
     
     if (res!=1)  {
         throw cms::Exception("SherpaInterface") <<"SherpackFetcher: Fetching of Sherpack did not succeed, terminating" << std::endl;
         return -1;
     }
     std::cout << "SherpackFetcher: Fetching successful" << std::endl;
   }
   
   std::ifstream my_file(sherpack.c_str());
   if (!my_file.good())
   {
       throw cms::Exception("SherpaInterface") << "SherpackFetcher: No Sherpack found" << std::endl;
       return -2;
   }
   my_file.close();
   std::cout << "SherpackFetcher: Sherpack found" << std::endl;
   
   if(SherpackChecksum!=""){
     char md5checksum[33]; 
     spu::md5_File(sherpack, md5checksum);
     for (int k=0; k<33; k++){
     if (md5checksum[k]!= SherpackChecksum[k]) {
         throw cms::Exception("SherpaInterface") << "SherpackFetcher: failure, calculated and specified checksums differ!" << std::endl;
         return -3;
     }
     }
     std::cout << "SherpackFetcher: Calculated checksum of the Sherpack is " << md5checksum << " and matches" << std::endl;
   } else {
     std::cout << "SherpackFetcher: Ignoring Checksum" << std::endl;
   }
   
   
   std::cout << "SherpackFetcher: Trying to unzip the Sherpack" << std::endl;
   int res=spu::Unzip(sherpack,sherpackunzip);
   if (res!=0) {
     throw cms::Exception("SherpaInterface") << "SherpackFetcher: Decompressing failed " << std::endl;
     return -4;
   }
   std::cout << "SherpackFetcher: Decompressing successful " << std::endl;
   
   FILE *file = fopen(const_cast<char*>(sherpackunzip.c_str()),"r");
   if( file ) {
     std::cout << "SherpackFetcher: Decompressed Sherpack exists with name " << sherpackunzip << " starting to untar it"<<std::endl;      
     spu::Untar(file,SherpaPath.c_str());
   } else {
     throw cms::Exception("SherpaInterface") << "SherpackFetcher: Could not open decompressed Sherpack" << std::endl;
     return -5;
   }
   fclose(file);
   return 0;
 }