You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
3.3 KiB
119 lines
3.3 KiB
package bitcask
|
|
|
|
import (
|
|
"os"
|
|
|
|
"git.mills.io/prologic/bitcask/internal/config"
|
|
)
|
|
|
|
const (
|
|
// DefaultDirFileModeBeforeUmask is the default os.FileMode used when creating directories
|
|
DefaultDirFileModeBeforeUmask = os.FileMode(0700)
|
|
|
|
// DefaultFileFileModeBeforeUmask is the default os.FileMode used when creating files
|
|
DefaultFileFileModeBeforeUmask = os.FileMode(0600)
|
|
|
|
// DefaultMaxDatafileSize is the default maximum datafile size in bytes
|
|
DefaultMaxDatafileSize = 1 << 20 // 1MB
|
|
|
|
// DefaultMaxKeySize is the default maximum key size in bytes
|
|
DefaultMaxKeySize = uint32(64) // 64 bytes
|
|
|
|
// DefaultMaxValueSize is the default value size in bytes
|
|
DefaultMaxValueSize = uint64(1 << 16) // 65KB
|
|
|
|
// DefaultSync is the default file synchronization action
|
|
DefaultSync = false
|
|
|
|
// DefaultAutoRecovery is the default auto-recovery action.
|
|
|
|
CurrentDBVersion = uint32(1)
|
|
)
|
|
|
|
// Option is a function that takes a config struct and modifies it
|
|
type Option func(*config.Config) error
|
|
|
|
func withConfig(src *config.Config) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.MaxDatafileSize = src.MaxDatafileSize
|
|
cfg.MaxKeySize = src.MaxKeySize
|
|
cfg.MaxValueSize = src.MaxValueSize
|
|
cfg.Sync = src.Sync
|
|
cfg.AutoRecovery = src.AutoRecovery
|
|
cfg.DirFileModeBeforeUmask = src.DirFileModeBeforeUmask
|
|
cfg.FileFileModeBeforeUmask = src.FileFileModeBeforeUmask
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithAutoRecovery sets auto recovery of data and index file recreation.
|
|
// IMPORTANT: This flag MUST BE used only if a proper backup was made of all
|
|
// the existing datafiles.
|
|
func WithAutoRecovery(enabled bool) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.AutoRecovery = enabled
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithDirFileModeBeforeUmask sets the FileMode used for each new file created.
|
|
func WithDirFileModeBeforeUmask(mode os.FileMode) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.DirFileModeBeforeUmask = mode
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithFileFileModeBeforeUmask sets the FileMode used for each new file created.
|
|
func WithFileFileModeBeforeUmask(mode os.FileMode) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.FileFileModeBeforeUmask = mode
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithMaxDatafileSize sets the maximum datafile size option
|
|
func WithMaxDatafileSize(size int) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.MaxDatafileSize = size
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithMaxKeySize sets the maximum key size option
|
|
func WithMaxKeySize(size uint32) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.MaxKeySize = size
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithMaxValueSize sets the maximum value size option
|
|
func WithMaxValueSize(size uint64) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.MaxValueSize = size
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// WithSync causes Sync() to be called on every key/value written increasing
|
|
// durability and safety at the expense of performance
|
|
func WithSync(sync bool) Option {
|
|
return func(cfg *config.Config) error {
|
|
cfg.Sync = sync
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func newDefaultConfig() *config.Config {
|
|
return &config.Config{
|
|
MaxDatafileSize: DefaultMaxDatafileSize,
|
|
MaxKeySize: DefaultMaxKeySize,
|
|
MaxValueSize: DefaultMaxValueSize,
|
|
Sync: DefaultSync,
|
|
DirFileModeBeforeUmask: DefaultDirFileModeBeforeUmask,
|
|
FileFileModeBeforeUmask: DefaultFileFileModeBeforeUmask,
|
|
DBVersion: CurrentDBVersion,
|
|
}
|
|
}
|