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LogWriter.cpp
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LogWriter.cpp
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#include "LogWriter.h"
#include <cassert>
#include <tuple>
#include "StringLogDevice.h"
namespace applog
{
LogWriter::LogWriter()
{
for (auto level : AllLogLevels)
{
_streams.emplace(level, level);
}
}
void LogWriter::write(const char* p, std::size_t length, LogLevel level)
{
// Convert the buffer to a string
std::string output(p, length);
// Visit all the logfiles and write the string
for (auto device : _devices)
{
device->writeLog(output, level);
}
}
std::ostream& LogWriter::getLogStream(LogLevel level)
{
assert(_streams.find(level) != _streams.end());
return _streams.at(level);
}
std::mutex& LogWriter::getStreamLock()
{
return LogStream::GetStreamLock();
}
void LogWriter::attach(ILogDevice* device)
{
bool firstDevice = _devices.empty();
_devices.insert(device);
if (firstDevice)
{
// The first device has the honour to receive all the buffered output
// Copy the temporary buffers over
if (applog::StringLogDevice::InstancePtr())
{
applog::StringLogDevice& logger = *applog::StringLogDevice::InstancePtr();
for (auto level : applog::AllLogLevels)
{
std::string bufferedText = logger.getString(static_cast<applog::LogLevel>(level));
if (bufferedText.empty()) continue;
device->writeLog(bufferedText + "\n", static_cast<applog::LogLevel>(level));
}
}
// Destruct the temporary buffer
applog::StringLogDevice::destroy();
}
}
void LogWriter::detach(ILogDevice* device)
{
_devices.erase(device);
}
LogWriter& LogWriter::Instance()
{
static LogWriter _writer;
return _writer;
}
} // namespace applog