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package config
import (
"io/ioutil"
"github.com/pelletier/go-toml"
)
type Size int
const (
DefaultAddr string = "127.0.0.1:6380"
DefaultHttpAddr string = "127.0.0.1:11181"
DefaultDBName string = "goleveldb"
DefaultDataDir string = "./data"
)
const (
MaxBinLogFileSize int = 1024 * 1024 * 1024
MaxBinLogFileNum int = 10000
DefaultBinLogFileSize int = MaxBinLogFileSize
DefaultBinLogFileNum int = 10
)
type LevelDBConfig struct {
Compression bool `toml:"compression"`
BlockSize int `toml:"block_size"`
WriteBufferSize int `toml:"write_buffer_size"`
CacheSize int `toml:"cache_size"`
MaxOpenFiles int `toml:"max_open_files"`
}
type LMDBConfig struct {
MapSize int `toml:"map_size"`
NoSync bool `toml:"nosync"`
}
type BinLogConfig struct {
MaxFileSize int `toml:"max_file_size"`
MaxFileNum int `toml:"max_file_num"`
}
type Config struct {
DataDir string `toml:"data_dir"`
DBName string `toml:"db_name"`
LevelDB LevelDBConfig `toml:"leveldb"`
LMDB LMDBConfig `toml:"lmdb"`
BinLog BinLogConfig `toml:"binlog"`
SlaveOf string `toml:"slaveof"`
AccessLog string `toml:"access_log"`
}
func NewConfigWithFile(fileName string) (*Config, error) {
data, err := ioutil.ReadFile(fileName)
if err != nil {
return nil, err
}
return NewConfigWithData(data)
}
func NewConfigWithData(data []byte) (*Config, error) {
cfg := NewConfigDefault()
err := toml.Unmarshal(data, cfg)
if err != nil {
return nil, err
}
return cfg, nil
}
func NewConfigDefault() *Config {
cfg := new(Config)
cfg.DataDir = DefaultDataDir
cfg.DBName = DefaultDBName
// disable binlog
cfg.BinLog.MaxFileNum = 0
cfg.BinLog.MaxFileSize = 0
// disable replication
cfg.SlaveOf = ""
// disable access log
cfg.AccessLog = ""
cfg.LMDB.MapSize = 20 * 1024 * 1024
cfg.LMDB.NoSync = true
return cfg
}
func (cfg *LevelDBConfig) Adjust() {
if cfg.CacheSize <= 0 {
cfg.CacheSize = 4 * 1024 * 1024
}
if cfg.BlockSize <= 0 {
cfg.BlockSize = 4 * 1024
}
if cfg.WriteBufferSize <= 0 {
cfg.WriteBufferSize = 4 * 1024 * 1024
}
if cfg.MaxOpenFiles < 1024 {
cfg.MaxOpenFiles = 1024
}
}
func (cfg *BinLogConfig) Adjust() {
if cfg.MaxFileSize <= 0 {
cfg.MaxFileSize = DefaultBinLogFileSize
} else if cfg.MaxFileSize > MaxBinLogFileSize {
cfg.MaxFileSize = MaxBinLogFileSize
}
if cfg.MaxFileNum <= 0 {
cfg.MaxFileNum = DefaultBinLogFileNum
} else if cfg.MaxFileNum > MaxBinLogFileNum {
cfg.MaxFileNum = MaxBinLogFileNum
}
}
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