286 lines
9.1 KiB
Go
286 lines
9.1 KiB
Go
package badger
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"path/filepath"
|
|
"time"
|
|
|
|
"github.com/dgraph-io/badger"
|
|
"github.com/dgraph-io/badger/options"
|
|
"github.com/imdario/mergo"
|
|
"github.com/kelseyhightower/envconfig"
|
|
|
|
"github.com/ipfs-cluster/ipfs-cluster/config"
|
|
)
|
|
|
|
const configKey = "badger"
|
|
const envConfigKey = "cluster_badger"
|
|
|
|
// Default values for badger Config
|
|
const (
|
|
DefaultSubFolder = "badger"
|
|
)
|
|
|
|
var (
|
|
// DefaultBadgerOptions has to be a var because badger.DefaultOptions
|
|
// is. Values are customized during Init().
|
|
DefaultBadgerOptions badger.Options
|
|
|
|
// DefaultGCDiscardRatio for GC operations. See Badger docs.
|
|
DefaultGCDiscardRatio float64 = 0.2
|
|
// DefaultGCInterval specifies interval between GC cycles.
|
|
DefaultGCInterval time.Duration = 15 * time.Minute
|
|
// DefaultGCSleep specifies sleep time between GC rounds.
|
|
DefaultGCSleep time.Duration = 10 * time.Second
|
|
)
|
|
|
|
func init() {
|
|
// Following go-ds-badger guidance
|
|
DefaultBadgerOptions = badger.DefaultOptions("")
|
|
DefaultBadgerOptions.CompactL0OnClose = false
|
|
DefaultBadgerOptions.Truncate = true
|
|
DefaultBadgerOptions.ValueLogLoadingMode = options.FileIO
|
|
// Explicitly set this to mmap. This doesn't use much memory anyways.
|
|
DefaultBadgerOptions.TableLoadingMode = options.MemoryMap
|
|
// Reduce this from 64MiB to 16MiB. That means badger will hold on to
|
|
// 20MiB by default instead of 80MiB.
|
|
DefaultBadgerOptions.MaxTableSize = 16 << 20
|
|
}
|
|
|
|
// Config is used to initialize a BadgerDB datastore. It implements the
|
|
// ComponentConfig interface.
|
|
type Config struct {
|
|
config.Saver
|
|
|
|
// The folder for this datastore. Non-absolute paths are relative to
|
|
// the base configuration folder.
|
|
Folder string
|
|
|
|
// For GC operation. See Badger documentation.
|
|
GCDiscardRatio float64
|
|
|
|
// Interval between GC cycles. Each GC cycle runs one or more
|
|
// rounds separated by GCSleep.
|
|
GCInterval time.Duration
|
|
|
|
// Time between rounds in a GC cycle
|
|
GCSleep time.Duration
|
|
|
|
BadgerOptions badger.Options
|
|
}
|
|
|
|
// badgerOptions is a copy of options.BadgerOptions but
|
|
// without the Logger as it cannot be marshaled to/from
|
|
// JSON.
|
|
type badgerOptions struct {
|
|
Dir string `json:"dir"`
|
|
ValueDir string `json:"value_dir"`
|
|
SyncWrites bool `json:"sync_writes"`
|
|
TableLoadingMode *options.FileLoadingMode `json:"table_loading_mode"`
|
|
ValueLogLoadingMode *options.FileLoadingMode `json:"value_log_loading_mode"`
|
|
NumVersionsToKeep int `json:"num_versions_to_keep"`
|
|
MaxTableSize int64 `json:"max_table_size"`
|
|
LevelSizeMultiplier int `json:"level_size_multiplier"`
|
|
MaxLevels int `json:"max_levels"`
|
|
ValueThreshold int `json:"value_threshold"`
|
|
NumMemtables int `json:"num_memtables"`
|
|
NumLevelZeroTables int `json:"num_level_zero_tables"`
|
|
NumLevelZeroTablesStall int `json:"num_level_zero_tables_stall"`
|
|
LevelOneSize int64 `json:"level_one_size"`
|
|
ValueLogFileSize int64 `json:"value_log_file_size"`
|
|
ValueLogMaxEntries uint32 `json:"value_log_max_entries"`
|
|
NumCompactors int `json:"num_compactors"`
|
|
CompactL0OnClose bool `json:"compact_l_0_on_close"`
|
|
ReadOnly bool `json:"read_only"`
|
|
Truncate bool `json:"truncate"`
|
|
}
|
|
|
|
func (bo *badgerOptions) Unmarshal() *badger.Options {
|
|
badgerOpts := &badger.Options{}
|
|
badgerOpts.Dir = bo.Dir
|
|
badgerOpts.ValueDir = bo.ValueDir
|
|
badgerOpts.SyncWrites = bo.SyncWrites
|
|
if tlm := bo.TableLoadingMode; tlm != nil {
|
|
badgerOpts.TableLoadingMode = *tlm
|
|
}
|
|
if vlm := bo.ValueLogLoadingMode; vlm != nil {
|
|
badgerOpts.ValueLogLoadingMode = *vlm
|
|
}
|
|
badgerOpts.NumVersionsToKeep = bo.NumVersionsToKeep
|
|
badgerOpts.MaxTableSize = bo.MaxTableSize
|
|
badgerOpts.LevelSizeMultiplier = bo.LevelSizeMultiplier
|
|
badgerOpts.MaxLevels = bo.MaxLevels
|
|
badgerOpts.ValueThreshold = bo.ValueThreshold
|
|
badgerOpts.NumMemtables = bo.NumMemtables
|
|
badgerOpts.NumLevelZeroTables = bo.NumLevelZeroTables
|
|
badgerOpts.NumLevelZeroTablesStall = bo.NumLevelZeroTablesStall
|
|
badgerOpts.LevelOneSize = bo.LevelOneSize
|
|
badgerOpts.ValueLogFileSize = bo.ValueLogFileSize
|
|
badgerOpts.ValueLogMaxEntries = bo.ValueLogMaxEntries
|
|
badgerOpts.NumCompactors = bo.NumCompactors
|
|
badgerOpts.CompactL0OnClose = bo.CompactL0OnClose
|
|
badgerOpts.ReadOnly = bo.ReadOnly
|
|
badgerOpts.Truncate = bo.Truncate
|
|
|
|
return badgerOpts
|
|
}
|
|
|
|
func (bo *badgerOptions) Marshal(badgerOpts *badger.Options) {
|
|
bo.Dir = badgerOpts.Dir
|
|
bo.ValueDir = badgerOpts.ValueDir
|
|
bo.SyncWrites = badgerOpts.SyncWrites
|
|
bo.TableLoadingMode = &badgerOpts.TableLoadingMode
|
|
bo.ValueLogLoadingMode = &badgerOpts.ValueLogLoadingMode
|
|
bo.NumVersionsToKeep = badgerOpts.NumVersionsToKeep
|
|
bo.MaxTableSize = badgerOpts.MaxTableSize
|
|
bo.LevelSizeMultiplier = badgerOpts.LevelSizeMultiplier
|
|
bo.MaxLevels = badgerOpts.MaxLevels
|
|
bo.ValueThreshold = badgerOpts.ValueThreshold
|
|
bo.NumMemtables = badgerOpts.NumMemtables
|
|
bo.NumLevelZeroTables = badgerOpts.NumLevelZeroTables
|
|
bo.NumLevelZeroTablesStall = badgerOpts.NumLevelZeroTablesStall
|
|
bo.LevelOneSize = badgerOpts.LevelOneSize
|
|
bo.ValueLogFileSize = badgerOpts.ValueLogFileSize
|
|
bo.ValueLogMaxEntries = badgerOpts.ValueLogMaxEntries
|
|
bo.NumCompactors = badgerOpts.NumCompactors
|
|
bo.CompactL0OnClose = badgerOpts.CompactL0OnClose
|
|
bo.ReadOnly = badgerOpts.ReadOnly
|
|
bo.Truncate = badgerOpts.Truncate
|
|
}
|
|
|
|
type jsonConfig struct {
|
|
Folder string `json:"folder,omitempty"`
|
|
GCDiscardRatio float64 `json:"gc_discard_ratio"`
|
|
GCInterval string `json:"gc_interval"`
|
|
GCSleep string `json:"gc_sleep"`
|
|
BadgerOptions badgerOptions `json:"badger_options,omitempty"`
|
|
}
|
|
|
|
// ConfigKey returns a human-friendly identifier for this type of Datastore.
|
|
func (cfg *Config) ConfigKey() string {
|
|
return configKey
|
|
}
|
|
|
|
// Default initializes this Config with sensible values.
|
|
func (cfg *Config) Default() error {
|
|
cfg.Folder = DefaultSubFolder
|
|
cfg.GCDiscardRatio = DefaultGCDiscardRatio
|
|
cfg.GCInterval = DefaultGCInterval
|
|
cfg.GCSleep = DefaultGCSleep
|
|
cfg.BadgerOptions = DefaultBadgerOptions
|
|
return nil
|
|
}
|
|
|
|
// ApplyEnvVars fills in any Config fields found as environment variables.
|
|
func (cfg *Config) ApplyEnvVars() error {
|
|
jcfg := cfg.toJSONConfig()
|
|
|
|
err := envconfig.Process(envConfigKey, jcfg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return cfg.applyJSONConfig(jcfg)
|
|
}
|
|
|
|
// Validate checks that the fields of this Config have working values,
|
|
// at least in appearance.
|
|
func (cfg *Config) Validate() error {
|
|
if cfg.Folder == "" {
|
|
return errors.New("folder is unset")
|
|
}
|
|
|
|
if cfg.GCDiscardRatio <= 0 || cfg.GCDiscardRatio >= 1 {
|
|
return errors.New("gc_discard_ratio must be more than 0 and less than 1")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// LoadJSON reads the fields of this Config from a JSON byteslice as
|
|
// generated by ToJSON.
|
|
func (cfg *Config) LoadJSON(raw []byte) error {
|
|
jcfg := &jsonConfig{}
|
|
err := json.Unmarshal(raw, jcfg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
cfg.Default()
|
|
|
|
return cfg.applyJSONConfig(jcfg)
|
|
}
|
|
|
|
func (cfg *Config) applyJSONConfig(jcfg *jsonConfig) error {
|
|
config.SetIfNotDefault(jcfg.Folder, &cfg.Folder)
|
|
|
|
// 0 is an invalid option anyways. In that case, set default (0.2)
|
|
config.SetIfNotDefault(jcfg.GCDiscardRatio, &cfg.GCDiscardRatio)
|
|
|
|
// If these durations are set, GC is enabled by default with default
|
|
// values.
|
|
err := config.ParseDurations("badger",
|
|
&config.DurationOpt{Duration: jcfg.GCInterval, Dst: &cfg.GCInterval, Name: "gc_interval"},
|
|
&config.DurationOpt{Duration: jcfg.GCSleep, Dst: &cfg.GCSleep, Name: "gc_sleep"},
|
|
)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
badgerOpts := jcfg.BadgerOptions.Unmarshal()
|
|
|
|
if err := mergo.Merge(&cfg.BadgerOptions, badgerOpts, mergo.WithOverride); err != nil {
|
|
return err
|
|
}
|
|
|
|
if jcfg.BadgerOptions.TableLoadingMode != nil {
|
|
cfg.BadgerOptions.TableLoadingMode = *jcfg.BadgerOptions.TableLoadingMode
|
|
}
|
|
|
|
if jcfg.BadgerOptions.ValueLogLoadingMode != nil {
|
|
cfg.BadgerOptions.ValueLogLoadingMode = *jcfg.BadgerOptions.ValueLogLoadingMode
|
|
}
|
|
|
|
return cfg.Validate()
|
|
}
|
|
|
|
// ToJSON generates a JSON-formatted human-friendly representation of this
|
|
// Config.
|
|
func (cfg *Config) ToJSON() (raw []byte, err error) {
|
|
jcfg := cfg.toJSONConfig()
|
|
|
|
raw, err = config.DefaultJSONMarshal(jcfg)
|
|
return
|
|
}
|
|
|
|
func (cfg *Config) toJSONConfig() *jsonConfig {
|
|
jCfg := &jsonConfig{}
|
|
|
|
if cfg.Folder != DefaultSubFolder {
|
|
jCfg.Folder = cfg.Folder
|
|
}
|
|
|
|
jCfg.GCDiscardRatio = cfg.GCDiscardRatio
|
|
jCfg.GCInterval = cfg.GCInterval.String()
|
|
jCfg.GCSleep = cfg.GCSleep.String()
|
|
|
|
bo := &badgerOptions{}
|
|
bo.Marshal(&cfg.BadgerOptions)
|
|
jCfg.BadgerOptions = *bo
|
|
|
|
return jCfg
|
|
}
|
|
|
|
// GetFolder returns the BadgerDB folder.
|
|
func (cfg *Config) GetFolder() string {
|
|
if filepath.IsAbs(cfg.Folder) {
|
|
return cfg.Folder
|
|
}
|
|
|
|
return filepath.Join(cfg.BaseDir, cfg.Folder)
|
|
}
|
|
|
|
// ToDisplayJSON returns JSON config as a string.
|
|
func (cfg *Config) ToDisplayJSON() ([]byte, error) {
|
|
return config.DisplayJSON(cfg.toJSONConfig())
|
|
}
|