bool McrouterLogger::start() {
if (running_ || router_.opts().stats_logging_interval == 0) {
return false;
}
if (!ensureDirExistsAndWritable(router_.opts().stats_root)) {
LOG(ERROR) << "Can't create or chmod " << router_.opts().stats_root <<
", disabling stats logging";
return false;
}
auto path = stats_file_path(router_.opts(), kStatsStartupOptionsSfx);
if (std::find(touchStatsFilepaths_.begin(), touchStatsFilepaths_.end(), path)
== touchStatsFilepaths_.end()) {
touchStatsFilepaths_.push_back(std::move(path));
}
running_ = true;
const std::string threadName = "mcrtr-stats-logger";
try {
loggerThread_ = std::thread(
std::bind(&McrouterLogger::loggerThreadRun, this));
folly::setThreadName(loggerThread_.native_handle(), threadName);
} catch (const std::system_error& e) {
running_ = false;
MC_LOG_FAILURE(router_.opts(), memcache::failure::Category::kSystemError,
"Can not start McrouterLogger thread {}: {}",
threadName, e.what());
}
return running_;
}
Fifo::Fifo(std::string path) : path_(std::move(path)) {
CHECK(!path_.empty()) << "Fifo path cannot be empty";
auto dir = boost::filesystem::path(path_).parent_path().string();
ensureDirExistsAndWritable(dir);
}
