StormLcgGtStorageMaker Class Reference

Inheritance diagram for StormLcgGtStorageMaker:

Public Member Functions
virtual bool	check (const std::string &, const std::string &path, const AuxSettings &, IOOffset *size=0) const override
virtual std::unique_ptr< Storage >	open (const std::string &proto, const std::string &surl, int mode, const AuxSettings &) const override
Public Member Functions inherited from StorageMaker
virtual void	stagein (const std::string &proto, const std::string &path, const AuxSettings &aux) const
	StorageMaker ()=default
virtual	~StorageMaker ()=default

Private Member Functions
std::string	getTURL (const std::string &surl) const

Detailed Description

Definition at line 12 of file StormLCGStorageMaker.cc.

Member Function Documentation

virtual bool StormLcgGtStorageMaker::check ( const std::string &  , const std::string &  path, const AuxSettings &  , IOOffset *  size = 0  ) const

inlineoverridevirtual

Reimplemented from StorageMaker.

Definition at line 78 of file StormLCGStorageMaker.cc.

References getTURL(), and findQualityFiles::size.

  {
    struct stat st;
    if (stat (getTURL(path).c_str(), &st) != 0)
      return false;

    if (size)
      *size = st.st_size;

    return true;
  }

std::string StormLcgGtStorageMaker::getTURL ( const std::string &  surl ) const

inlineprivate

Definition at line 15 of file StormLCGStorageMaker.cc.

References Exception, LogDebug, convertSQLitetoXML_cfg::output, AlCaHLTBitMon_ParallelJobs::p, pipe::pipe(), dqm_diff::start, and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by check(), and open().

  {
    // PrepareToGet timeout  
    std::string timeout("300");
    if(char *p = getenv("CMS_STORM_LCG_GT_TIMEOUT"))
      timeout = p;

    /* Build the command line:
    -b => no BDII contacted
    -T srmv2 => necessary with -b 
    -t timeout */
    std::string comm("lcg-gt -b -T srmv2 -t " + timeout + " srm:" + surl + " file 2>&1"); 
    LogDebug("StormLCGStorageMaker") << "command: " << comm << std::endl;

    FILE *pipe = popen(comm.c_str(), "r");
    if(! pipe)
      throw cms::Exception("StormLCGStorageMaker")
    << "failed to execute lcg-gt command: "
    << comm;

    // Get output
    int ch;
    std::string output;
    while ((ch = getc(pipe)) != EOF)
      output.push_back(ch);
    pclose(pipe);

    LogDebug("StormLCGStorageMaker") << "output: " << output << std::endl;
 
    // Extract TURL if possible.
    size_t start = output.find("file:", 0);
    if (start == std::string::npos)
      throw cms::Exception("StormLCGStorageMaker")
        << "no turl found in command '" << comm << "' output:\n" << output;

    start += 5;
    std::string turl(output, start, output.find_first_of("\n", start) - start); 
    LogDebug("StormLCGStorageMaker") << "file to open: " << turl << std::endl;
    return turl;
  }

virtual std::unique_ptr<Storage> StormLcgGtStorageMaker::open ( const std::string &  proto, const std::string &  surl, int  mode, const AuxSettings &    ) const

inlineoverridevirtual

Implements StorageMaker.

Definition at line 58 of file StormLCGStorageMaker.cc.

References StorageFactory::CACHE_HINT_STORAGE, StorageFactory::cacheHint(), f, mergeVDriftHistosByStation::file, StorageFactory::get(), getTURL(), alignBH_cfg::mode, eostools::move(), IOFlags::OpenUnbuffered, fed_dqm_sourceclient-live_cfg::path, StorageFactory::READ_HINT_UNBUFFERED, StorageFactory::readHint(), AlCaHLTBitMon_QueryRunRegistry::string, and StorageFactory::wrapNonLocalFile().

  {
    const StorageFactory *f = StorageFactory::get();
    StorageFactory::ReadHint readHint = f->readHint();
    StorageFactory::CacheHint cacheHint = f->cacheHint();

    if (readHint != StorageFactory::READ_HINT_UNBUFFERED
    || cacheHint == StorageFactory::CACHE_HINT_STORAGE)
      mode &= ~IOFlags::OpenUnbuffered;
    else
      mode |= IOFlags::OpenUnbuffered;

    std::string path = getTURL(surl);
    auto file = std::make_unique<File> (path, mode);
    return f->wrapNonLocalFile (std::move(file), proto, path, mode);
  }