greenplumn ILogger 源码
greenplumn ILogger 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/error/ILogger.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2010 Greenplum, Inc.
//
// @filename:
// ILogger.h
//
// @doc:
// Interface class for logging
//---------------------------------------------------------------------------
#ifndef GPOS_ILogger_H
#define GPOS_ILogger_H
#include "gpos/types.h"
#ifndef GPOS_DEBUG
#define GPOS_LOG_MESSAGE_BUFFER_SIZE (1024 * 128)
#else
// have a larger buffer size for debug builds (e.g. printing out MEMO)
#define GPOS_LOG_MESSAGE_BUFFER_SIZE (8192 * 128)
#endif
#define GPOS_LOG_TRACE_BUFFER_SIZE (1024 * 8)
#define GPOS_LOG_ENTRY_BUFFER_SIZE (GPOS_LOG_MESSAGE_BUFFER_SIZE + 256)
#define GPOS_LOG_WRITE_RETRIES (10)
#define GPOS_WARNING(...) ILogger::Warning(__FILE__, __LINE__, __VA_ARGS__)
#define GPOS_TRACE(msg) \
ILogger::Trace(__FILE__, __LINE__, false /*is_err*/, msg)
#define GPOS_TRACE_ERR(msg) \
ILogger::Trace(__FILE__, __LINE__, true /*is_err*/, msg)
#define GPOS_TRACE_FORMAT(format, ...) \
ILogger::TraceFormat(__FILE__, __LINE__, false /*is_err*/, \
GPOS_WSZ_LIT(format), __VA_ARGS__)
#define GPOS_TRACE_FORMAT_ERR(format, ...) \
ILogger::TraceFormat(__FILE__, __LINE__, true /*is_err*/, \
GPOS_WSZ_LIT(format), __VA_ARGS__)
namespace gpos
{
//---------------------------------------------------------------------------
// @class:
// ILogger
//
// @doc:
// Interface for abstracting logging primitives.
//
//---------------------------------------------------------------------------
class ILogger
{
friend class CErrorHandlerStandard;
public:
// enum indicating error logging information
enum ErrorInfoLevel
{
EeilMsg, // log error message only
EeilMsgHeader, // log error header and message
EeilMsgHeaderStack // log error header, message and stack trace
};
private:
// log message to current task's logger;
// use stdout/stderr wrapping loggers outside worker framework;
static void LogTask(const WCHAR *msg, ULONG severity, BOOL is_err,
const CHAR *filename, ULONG line);
protected:
// write log message
virtual void Write(const WCHAR *log_entry, ULONG severity) = 0;
public:
ILogger(const ILogger &) = delete;
// ctor
ILogger();
// dtor
virtual ~ILogger();
// error info level accessor
virtual ErrorInfoLevel InfoLevel() const = 0;
// set error info level
virtual void SetErrorInfoLevel(ErrorInfoLevel info_level) = 0;
// retrieve warning message from repository and log it to error log
static void Warning(const CHAR *filename, ULONG line, ULONG major,
ULONG minor, ...);
// log trace message to current task's output or error log
static void Trace(const CHAR *filename, ULONG line, BOOL is_err,
const WCHAR *msg);
// format and log trace message to current task's output or error log
static void TraceFormat(const CHAR *filename, ULONG line, BOOL is_err,
const WCHAR *format, ...);
}; // class ILogger
} // namespace gpos
#endif // !GPOS_ILogger_H
// EOF
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