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#ifndef MOZC_BASE_SYNC_LOGGER_H_
#define MOZC_BASE_SYNC_LOGGER_H_
#include <iostream>
#include <string>
#include "base/base.h"
#include "base/util.h"
namespace mozc {
namespace sync {
// We provide mozc::sync::Logging module separately from the
// mozc::Logging module.
// Syncer is doing lots of complicated operations and users might
// encounter unexceptional behaviors depending on the server status,
// storage status/size, and config settings. We will receive many error
// reports in our U2U. To make a prompt reply and quick investigation of
// the cause of errors happening on the user environments, logging is
// "must" feature.
//
// sync::Logging provides a logging interface for syncer module.
// Useally, the following macro can be used for logging any actions
// of syncer modules
//
// SYNC_VLOG(1) << "Sync started";
// SYNC_VLOG(2) << "Downloaded: " << remote_proto->DebugString();
//
// The log file is generated at <user_profile_dir>/sync.log
// The verbose level is saved in FLAGS_sync_verbose_level now.
// TODO(taku): better to move this parameter to config.
class Logging {
public:
// Get logging stream. The log message can be written to the stream
static ostream &GetLogStream();
// return config.sync_verbose_level()
static int GetVerboseLevel();
// return the filename of sync logging.
static string GetLogFileName();
// clear the contents of logging file and recreate it.
// This method is used in unittesting.
static void Reset();
};
class LogFinalizer {
public:
LogFinalizer() {}
~LogFinalizer();
void operator&(ostream&) {}
};
} // sync
} // mozc
#define SYNC_VLOG(verboselevel) \
(mozc::sync::Logging::GetVerboseLevel() < (verboselevel)) ? (void) 0 : \
mozc::sync::LogFinalizer() & mozc::sync::Logging::GetLogStream() \
<< mozc::Logging::GetLogMessageHeader() << " " \
<< mozc::Util::Basename(__FILE__) << "(" << __LINE__ << ") "
#endif // MOZC_BASE_SYNC_LOGGER_H_