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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/core/utils/logging/FormattedLogSystem.h>
#include <aws/core/utils/DateTime.h>
#include <aws/core/utils/Array.h>
#include <fstream>
#include <cstdarg>
#include <stdio.h>
#include <thread>
using namespace Aws::Utils;
using namespace Aws::Utils::Logging;
static Aws::String CreateLogPrefixLine(LogLevel logLevel, const char* tag)
{
Aws::StringStream ss;
switch(logLevel)
{
case LogLevel::Error:
ss << "[ERROR] ";
break;
case LogLevel::Fatal:
ss << "[FATAL] ";
break;
case LogLevel::Warn:
ss << "[WARN] ";
break;
case LogLevel::Info:
ss << "[INFO] ";
break;
case LogLevel::Debug:
ss << "[DEBUG] ";
break;
case LogLevel::Trace:
ss << "[TRACE] ";
break;
default:
ss << "[UNKOWN] ";
break;
}
ss << DateTime::Now().CalculateGmtTimeWithMsPrecision() << " " << tag << " [" << std::this_thread::get_id() << "] ";
return ss.str();
}
FormattedLogSystem::FormattedLogSystem(LogLevel logLevel) :
m_logLevel(logLevel)
{
}
void FormattedLogSystem::Log(LogLevel logLevel, const char* tag, const char* formatStr, ...)
{
Aws::StringStream ss;
ss << CreateLogPrefixLine(logLevel, tag);
std::va_list args;
va_start(args, formatStr);
va_list tmp_args; //unfortunately you cannot consume a va_list twice
va_copy(tmp_args, args); //so we have to copy it
#ifdef _WIN32
const int requiredLength = _vscprintf(formatStr, tmp_args) + 1;
#else
const int requiredLength = vsnprintf(nullptr, 0, formatStr, tmp_args) + 1;
#endif
va_end(tmp_args);
Array<char> outputBuff(requiredLength);
#ifdef _WIN32
vsnprintf_s(outputBuff.GetUnderlyingData(), requiredLength, _TRUNCATE, formatStr, args);
#else
vsnprintf(outputBuff.GetUnderlyingData(), requiredLength, formatStr, args);
#endif // _WIN32
ss << outputBuff.GetUnderlyingData() << std::endl;
ProcessFormattedStatement(ss.str());
va_end(args);
}
void FormattedLogSystem::LogStream(LogLevel logLevel, const char* tag, const Aws::OStringStream &message_stream)
{
ProcessFormattedStatement(CreateLogPrefixLine(logLevel, tag) + message_stream.str() + "\n");
}
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