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ErrorLog.h

Go to the documentation of this file.

#ifndef FWCore_MessageService_ErrorLog_h
#define FWCore_MessageService_ErrorLog_h


// ----------------------------------------------------------------------
//
// ErrorLog     provides interface to the module-wide variable by which
//              users issue log messages.  Both the physicist and the
//              frameworker interact with this class, which has a piece
//              of module name information, but mainly works thru
//              dispatching to the ELadministrator.
//
// 7/6/98  mf   Created file.
// 5/2/99  web  Added non-default constructor.
// 3/16/00 mf   Added operator() (nbytes, data) to invoke ELrecv.
// 6/6/00  web  Reflect consolidation of ELadministrator/X; consolidate
//              ErrorLog/X.
// 3/13/01 mf   hexTrigger and related global methods
// 3/13/01 mf   setDiscardThreshold 
// 5/7/01  mf   operator<< (const char[]) to avoid many instantiations of 
//              the template one for each length of potential error message 
// 3/6/02  mf   getELdestControl()
// 12/2/02 mf   operator()( int debugLevel ); also
//              debugVerbosityLevel, debugSeverityLevel, debugMessageId
// 3/17/04 mf   spaceAfterInts
//
// ----------------------------------------------------------------------

#include "FWCore/MessageLogger/interface/ELstring.h"
#include "FWCore/MessageLogger/interface/ELseverityLevel.h"
#include "FWCore/MessageLogger/interface/ErrorObj.h"

#include <sstream>

namespace edm {       
namespace service {       


// ----------------------------------------------------------------------
// Prerequisite classes:
// ----------------------------------------------------------------------

class ELadministrator;
class ELtsErrorLog;
class ELdestControl;

// ----------------------------------------------------------------------
// ErrorLog:
// ----------------------------------------------------------------------

class ErrorLog  {

  friend class ELtsErrorLog;

public:

// ----------------------------------------------------------------------
// -----  Methods for physicists logging errors:
// ----------------------------------------------------------------------

  // -----  start a new logging operation:
  //
  ErrorLog & operator()( const ELseverityLevel & sev, const ELstring & id );
        //-| If overriding this, please see Note 1
        //-| at the bottom of this file!

  inline ErrorLog & operator()( int debugLevel );

  // -----  mutator:
  //
  void setSubroutine( const ELstring & subName );

  // -----  logging operations:
  //
  ErrorLog & operator()( edm::ErrorObj & msg );   // an entire message

  ErrorLog & emit( const ELstring & msg );        // just one part of a message
  ErrorLog & endmsg();                            // no more parts forthcoming
  ErrorLog & operator<<( void (* f)(ErrorLog &) );// allow log << zmel::endmsg

// ----------------------------------------------------------------------
// -----  Methods meant for the Module base class in the framework:
// ----------------------------------------------------------------------

  // -----  birth/death:
  //
  ErrorLog();
  ErrorLog( const ELstring & pkgName );
  virtual ~ErrorLog();

  // -----  mutators:
  //
  void setModule ( const ELstring & modName );  // These two are IDENTICAL
  void setPackage( const ELstring & pkgName );  // These two are IDENTICAL

  // -----  logging collected message:
  //
  ErrorLog & operator()( int nbytes, char * data );

  // -----  advanced control options:

  int             setHexTrigger       (int trigger);
  bool            setSpaceAfterInt    (bool space=true);
  ELseverityLevel setDiscardThreshold (ELseverityLevel sev);
  void            setDebugVerbosity   (int debugVerbosity);
  void            setDebugMessages    (ELseverityLevel sev, ELstring id);

  // -----  recovery of an ELdestControl handle

  bool getELdestControl (const ELstring & name, 
                         ELdestControl & theDestControl) const;

  // -----  information about this ErrorLog instance
  
  ELstring moduleName() const;
  ELstring subroutineName() const;
  
  // -----  member data:
  //
protected:
  ELadministrator  * a;

private:
  ELstring              subroutine;
  ELstring              module;
public:
  int                   hexTrigger;
  bool                  spaceAfterInt;
  ELseverityLevel       discardThreshold;
  bool                  discarding;
  int                   debugVerbosityLevel;
  ELseverityLevel       debugSeverityLevel;
  ELstring              debugMessageId;

};  // ErrorLog



// ----------------------------------------------------------------------
// Global functions:
// ----------------------------------------------------------------------

void endmsg( ErrorLog & log );

template <class T>
inline ErrorLog & operator<<( ErrorLog & e, const T & t );

ErrorLog & operator<<( ErrorLog & e, int n );
ErrorLog & operator<<( ErrorLog & e, long n );
ErrorLog & operator<<( ErrorLog & e, short n );
ErrorLog & operator<<( ErrorLog & e, unsigned int n );
ErrorLog & operator<<( ErrorLog & e, unsigned long n );
ErrorLog & operator<<( ErrorLog & e, unsigned short n );
ErrorLog & operator<<( ErrorLog & e, const char s[] );

// ----------------------------------------------------------------------
// Macros:
// ----------------------------------------------------------------------

#define ERRLOG(sev,id) \
  errlog( sev, id ) << __FILE__ <<":" << __LINE__ << " "

#define ERRLOGTO(logname,sev,id) \
  logname( sev, id ) << __FILE__ <<":" << __LINE__ << " "


// ----------------------------------------------------------------------


}        // end of namespace service
}        // end of namespace edm


// ----------------------------------------------------------------------
// .icc
// ----------------------------------------------------------------------

#define ERRORLOG_ICC
  #include "FWCore/MessageService/interface/ErrorLog.icc"
#undef  ERRORLOG_ICC


// ----------------------------------------------------------------------
// Technical Notes
// ----------------------------------------------------------------------
//
//-| Note 1:  Overiding methods that return ErrorLog &:
//-| --------------------------------------------------
//-|
//-| Both operator() and in the icc file operator<< return ErrorLog&
//-| for chaining purposes.
//-|
//-| Note that these methods are NOT virtual.  Derived classes will
//-| only need to override this if they provide non-standard behavior
//-| for the () or << operation.   The latter would require tossing out
//-| the template in ErrorLog.cc anyway.
//-|


// ----------------------------------------------------------------------


#endif  // FWCore_MessageService_ErrorLog_h

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