FileDescriptor.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
//====================================================================
//  Storage service file descriptor class definitions
//--------------------------------------------------------------------
//
//  Package    : StorageSvc (The POOL project)
//  @author      M.Frank
//====================================================================
#ifndef POOL_FILEDESCRIPTOR_H
#define POOL_FILEDESCRIPTOR_H 1
 
#include "uuid/uuid.h"
#include "CxxUtils/MD5.h"
#include "PersistentDataModel/Guid.h"
 
#include <string>
 
/*
 *   POOL namespace declaration
 */
namespace pool    {
 
  class DbConnection;
  // as from IFileCatalog
  typedef std::string FileID;

  class FileDescriptor   {
  private:
    FileID            m_FID;
    std::string       m_PFN;
    DbConnection*     m_DBC;
 
  public:
    FileDescriptor() : m_DBC(0)             {                     }
    FileDescriptor(const FileID& fid, const std::string& pfn)
      : m_FID(fid), m_PFN(pfn), m_DBC(0)    {
      if (!m_FID.empty() && !Guid::isGuid(m_FID)) {
         // MN: TODO: review this constructor usage 
         initFromFilename(m_FID);
      }
    }

    void initFromFilename(const std::string& filename) {
      m_PFN = filename;
      MD5 checkSum((unsigned char*)filename.c_str(), filename.size());
        uuid_t checkSumUuid;
        checkSum.raw_digest((unsigned char*)(&checkSumUuid));
        char text[37];
        uuid_unparse_upper(checkSumUuid, text);
        m_FID = text;
    }

     const std::string& PFN()  const         { return m_PFN;       }
     void setPFN(const std::string& val)     { m_PFN = val;        }

     const FileID& FID()  const              { return m_FID;       }
     void setFID(const FileID& val)          { m_FID = val;        }
    
     DbConnection* dbc()                     { return m_DBC;       }
     const DbConnection* dbc()  const        { return m_DBC;       }
     void setDbc(DbConnection* val)          { m_DBC = val;        }
  };
}       // End namespace pool
#endif  // POOL_FILEDESCRIPTOR_H