lokinet/llarp/util/logging/file_logger.cpp
Stephen Shelton 273270916e
The Great Wall of Blame
This commit reflects changes to clang-format rules. Unfortunately,
these rule changes create a massive change to the codebase, which
causes an apparent rewrite of git history.

Git blame's --ignore-rev flag can be used to ignore this commit when
attempting to `git blame` some code.
2020-04-07 12:38:56 -06:00

111 lines
2.3 KiB
C++

#include <util/logging/file_logger.hpp>
#include <util/logging/logger_internal.hpp>
#include <utility>
namespace llarp
{
void
FileLogStream::Flush(Lines_t* lines, FILE* const f)
{
bool wrote_stuff = false;
do
{
auto maybe_line = lines->tryPopFront();
if (not maybe_line.has_value())
break;
const auto& line = maybe_line.value();
if (fprintf(f, "%s\n", line.c_str()) >= 0)
wrote_stuff = true;
} while (true);
if (wrote_stuff)
fflush(f);
}
// namespace
FileLogStream::FileLogStream(
std::shared_ptr<thread::ThreadPool> disk, FILE* f, llarp_time_t flushInterval, bool closeFile)
: m_Lines(1024 * 8)
, m_Disk(std::move(disk))
, m_File(f)
, m_FlushInterval(flushInterval)
, m_Close(closeFile)
{
m_Lines.enable();
}
FileLogStream::~FileLogStream()
{
m_Lines.disable();
do
{
auto line = m_Lines.tryPopFront();
if (not line.has_value())
break;
} while (true);
fflush(m_File);
if (m_Close)
fclose(m_File);
}
bool
FileLogStream::ShouldFlush(llarp_time_t now) const
{
if (m_Lines.full())
return true;
if (m_LastFlush >= now)
return false;
const auto dlt = now - m_LastFlush;
return dlt >= m_FlushInterval;
}
void
FileLogStream::PreLog(
std::stringstream& ss,
LogLevel lvl,
const char* fname,
int lineno,
const std::string& nodename) const
{
ss << "[" << LogLevelToString(lvl) << "] ";
ss << "[" << nodename << "]"
<< "(" << thread_id_string() << ") " << log_timestamp() << " " << fname << ":" << lineno
<< "\t";
}
void
FileLogStream::Print(LogLevel, const char*, const std::string& msg)
{
m_Lines.pushBack(msg);
}
void
FileLogStream::AppendLog(
LogLevel lvl,
const char* fname,
int lineno,
const std::string& nodename,
const std::string msg)
{
ILogStream::AppendLog(lvl, fname, lineno, nodename, msg);
Tick(llarp::time_now_ms());
}
void
FileLogStream::Tick(llarp_time_t now)
{
if (ShouldFlush(now))
FlushLinesToDisk(now);
}
void
FileLogStream::FlushLinesToDisk(llarp_time_t now)
{
FILE* const f = m_File;
auto lines = &m_Lines;
m_Disk->addJob([f, lines]() { Flush(lines, f); });
m_LastFlush = now;
}
} // namespace llarp