greenplumn CLogger 源码
greenplumn CLogger 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/error/CLogger.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2010 Greenplum, Inc.
//
// @filename:
// CLogger.h
//
// @doc:
// Partial implementation of interface class for logging
//---------------------------------------------------------------------------
#ifndef GPOS_CLogger_H
#define GPOS_CLogger_H
#include "gpos/error/ILogger.h"
#include "gpos/string/CWStringStatic.h"
namespace gpos
{
//---------------------------------------------------------------------------
// @class:
// CLogger
//
// @doc:
// Partial implementation of interface for abstracting logging primitives.
//
//---------------------------------------------------------------------------
class CLogger : public ILogger
{
friend class ILogger;
friend class CErrorHandlerStandard;
private:
// buffer used to construct the log entry
WCHAR m_entry[GPOS_LOG_ENTRY_BUFFER_SIZE];
// buffer used to construct the log entry
WCHAR m_msg[GPOS_LOG_MESSAGE_BUFFER_SIZE];
// buffer used to retrieve system error messages
CHAR m_retrieved_msg[GPOS_LOG_MESSAGE_BUFFER_SIZE];
// entry buffer wrapper
CWStringStatic m_entry_wrapper;
// message buffer wrapper
CWStringStatic m_msg_wrapper;
// error logging information level
ErrorInfoLevel m_info_level;
// log message
void Log(const WCHAR *msg, ULONG severity, const CHAR *filename,
ULONG line);
// format log message
void Format(const WCHAR *msg, ULONG severity, const CHAR *filename,
ULONG line);
// add date to message
void AppendDate();
// report logging failure
void ReportFailure();
protected:
// accessor for system error buffer
CHAR *
Msg()
{
return m_retrieved_msg;
}
public:
CLogger(const CLogger &) = delete;
// ctor
explicit CLogger(ErrorInfoLevel info_level = ILogger::EeilMsgHeaderStack);
// dtor
~CLogger() override;
// error level accessor
ErrorInfoLevel
InfoLevel() const override
{
return m_info_level;
}
// set error info level
void
SetErrorInfoLevel(ErrorInfoLevel info_level) override
{
m_info_level = info_level;
}
}; // class CLogger
} // namespace gpos
#endif // !GPOS_CLogger_H
// EOF
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