mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-26 16:30:56 +00:00
ccaedd16d4
Summary:
* Now each Log related function has a variant that takes an additional
argument indicating its log level, which is one of the following:
- DEBUG, INFO, WARN, ERROR, FATAL.
* To ensure backward-compatibility, old version Log functions are kept
unchanged.
* Logger now has a member variable indicating its log level. Any incoming
Log request which log level is lower than Logger's log level will not
be output.
* The output of the newer version Log will be prefixed by its log level.
Test Plan:
Add a LogType test in auto_roll_logger_test.cc
= Sample log output =
2014/02/11-00:03:07.683895 7feded179840 [DEBUG] this is the message to be written to the log file!!
2014/02/11-00:03:07.683898 7feded179840 [INFO] this is the message to be written to the log file!!
2014/02/11-00:03:07.683900 7feded179840 [WARN] this is the message to be written to the log file!!
2014/02/11-00:03:07.683903 7feded179840 [ERROR] this is the message to be written to the log file!!
2014/02/11-00:03:07.683906 7feded179840 [FATAL] this is the message to be written to the log file!!
Reviewers: dhruba, xjin, kailiu
Reviewed By: kailiu
CC: leveldb
Differential Revision: https://reviews.facebook.net/D16071
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
//
|
|
// Logger implementation that can be shared by all environments
|
|
// where enough posix functionality is available.
|
|
|
|
#pragma once
|
|
#include "db/filename.h"
|
|
#include "port/port.h"
|
|
#include "util/posix_logger.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
// Rolls the log file by size and/or time
|
|
class AutoRollLogger : public Logger {
|
|
public:
|
|
AutoRollLogger(Env* env, const std::string& dbname,
|
|
const std::string& db_log_dir, size_t log_max_size,
|
|
size_t log_file_time_to_roll,
|
|
const InfoLogLevel log_level = InfoLogLevel::ERROR)
|
|
: Logger(log_level),
|
|
dbname_(dbname),
|
|
db_log_dir_(db_log_dir),
|
|
env_(env),
|
|
status_(Status::OK()),
|
|
kMaxLogFileSize(log_max_size),
|
|
kLogFileTimeToRoll(log_file_time_to_roll),
|
|
cached_now(static_cast<uint64_t>(env_->NowMicros() * 1e-6)),
|
|
ctime_(cached_now),
|
|
cached_now_access_count(0),
|
|
call_NowMicros_every_N_records_(100),
|
|
mutex_() {
|
|
env->GetAbsolutePath(dbname, &db_absolute_path_);
|
|
log_fname_ = InfoLogFileName(dbname_, db_absolute_path_, db_log_dir_);
|
|
RollLogFile();
|
|
ResetLogger();
|
|
}
|
|
|
|
void Logv(const char* format, va_list ap);
|
|
|
|
// check if the logger has encountered any problem.
|
|
Status GetStatus() {
|
|
return status_;
|
|
}
|
|
|
|
size_t GetLogFileSize() const {
|
|
return logger_->GetLogFileSize();
|
|
}
|
|
|
|
virtual ~AutoRollLogger() {
|
|
}
|
|
|
|
void SetCallNowMicrosEveryNRecords(uint64_t call_NowMicros_every_N_records) {
|
|
call_NowMicros_every_N_records_ = call_NowMicros_every_N_records;
|
|
}
|
|
|
|
private:
|
|
|
|
bool LogExpired();
|
|
Status ResetLogger();
|
|
void RollLogFile();
|
|
|
|
std::string log_fname_; // Current active info log's file name.
|
|
std::string dbname_;
|
|
std::string db_log_dir_;
|
|
std::string db_absolute_path_;
|
|
Env* env_;
|
|
std::shared_ptr<Logger> logger_;
|
|
// current status of the logger
|
|
Status status_;
|
|
const size_t kMaxLogFileSize;
|
|
const size_t kLogFileTimeToRoll;
|
|
// to avoid frequent env->NowMicros() calls, we cached the current time
|
|
uint64_t cached_now;
|
|
uint64_t ctime_;
|
|
uint64_t cached_now_access_count;
|
|
uint64_t call_NowMicros_every_N_records_;
|
|
port::Mutex mutex_;
|
|
};
|
|
|
|
// Facade to craete logger automatically
|
|
Status CreateLoggerFromOptions(
|
|
const std::string& dbname,
|
|
const std::string& db_log_dir,
|
|
Env* env,
|
|
const Options& options,
|
|
std::shared_ptr<Logger>* logger);
|
|
|
|
} // namespace rocksdb
|