func main() {
dbName := "/data/mydb"
cache := gorocksdb.NewLRUCache(512 * 1024 * 1024)
filter := gorocksdb.NewBloomFilter(15)
to := gorocksdb.NewDefaultBlockBasedTableOptions()
to.SetBlockSize(256 * 1024)
to.SetBlockCache(cache)
to.SetFilterPolicy(filter)
options := gorocksdb.NewDefaultOptions()
options.SetBlockBasedTableFactory(to)
options.SetCreateIfMissing(true)
options.SetStatsDumpPeriodSec(60 * 1) // dump stats at 10 minute interval
options.SetCompactionStyle(gorocksdb.UniversalCompactionStyle)
options.SetWriteBufferSize(512 * 1024 * 1024)
options.SetMaxWriteBufferNumber(5)
options.SetMinWriteBufferNumberToMerge(2)
db, err := gorocksdb.OpenDb(options, dbName)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
putStatch := doPut(db, 16*1024, 32*1024)
for {
p := <-putStatch
fmt.Println("avgTime ", p.avgTime, "maxTime", p.maxTime)
}
}
func applyConfig(o *gorocksdb.Options, config map[string]interface{}) (
*gorocksdb.Options, error) {
cim, ok := config["create_if_missing"].(bool)
if ok {
o.SetCreateIfMissing(cim)
}
eie, ok := config["error_if_exists"].(bool)
if ok {
o.SetErrorIfExists(eie)
}
wbs, ok := config["write_buffer_size"].(float64)
if ok {
o.SetWriteBufferSize(int(wbs))
}
mof, ok := config["max_open_files"].(float64)
if ok {
o.SetMaxOpenFiles(int(mof))
}
tt, ok := config["total_threads"].(float64)
if ok {
o.IncreaseParallelism(int(tt))
}
// options in the block based table options object
bbto := gorocksdb.NewDefaultBlockBasedTableOptions()
lcc, ok := config["lru_cache_capacity"].(float64)
if ok {
c := gorocksdb.NewLRUCache(int(lcc))
bbto.SetBlockCache(c)
}
bfbpk, ok := config["bloom_filter_bits_per_key"].(float64)
if ok {
bf := gorocksdb.NewBloomFilter(int(bfbpk))
bbto.SetFilterPolicy(bf)
}
// set the block based table options
o.SetBlockBasedTableFactory(bbto)
return o, nil
}
func NewRocksDB(path string) (*RocksDB, error) {
opts := gorocksdb.NewDefaultOptions()
filter := gorocksdb.NewBloomFilter(14)
opts.SetFilterPolicy(filter)
opts.SetMaxOpenFiles(10000)
db, err := gorocksdb.OpenDbForReadOnly(opts, path, false)
if err != nil {
return nil, err
}
return &RocksDB{
db: db,
ro: gorocksdb.NewDefaultReadOptions(),
hits: metrics.NewMeter(),
misses: metrics.NewMeter(),
cache: lru.New(1000000),
}, nil
}
// NewStore returns the Store a rocksdb wrapper
func NewStore(options StoreOptions) (*Store, error) {
options.SetDefaults()
if options.Directory == "" {
return nil, fmt.Errorf("Empty directory of store options")
}
if options.IsDebug {
log.EnableDebug()
}
s := &Store{
directory: options.Directory,
useTailing: !options.DisableTailing,
cfHandles: make(map[string]*rocks.ColumnFamilyHandle),
queues: make(map[string]*Queue),
}
opts := rocks.NewDefaultOptions()
opts.SetCreateIfMissing(true)
opts.IncreaseParallelism(options.Parallel)
opts.SetMergeOperator(&_CountMerger{})
opts.SetMaxSuccessiveMerges(64)
opts.SetWriteBufferSize(options.WriteBufferSize)
opts.SetMaxWriteBufferNumber(options.WriteBufferNumber)
opts.SetTargetFileSizeBase(options.FileSizeBase)
opts.SetLevel0FileNumCompactionTrigger(8)
opts.SetLevel0SlowdownWritesTrigger(16)
opts.SetLevel0StopWritesTrigger(24)
opts.SetNumLevels(4)
opts.SetMaxBytesForLevelBase(512 * 1024 * 1024)
opts.SetMaxBytesForLevelMultiplier(8)
opts.SetCompression(options.Compression)
opts.SetDisableAutoCompactions(options.DisableAutoCompaction)
bbto := rocks.NewDefaultBlockBasedTableOptions()
bbto.SetBlockCache(rocks.NewLRUCache(options.MemorySize))
bbto.SetFilterPolicy(rocks.NewBloomFilter(10))
opts.SetBlockBasedTableFactory(bbto)
opts.SetMaxOpenFiles(-1)
opts.SetMemtablePrefixBloomBits(8 * 1024 * 1024)
var err error
if err = os.MkdirAll(options.Directory, 0755); err != nil {
log.Errorf("Failed to mkdir %q, %s", options.Directory, err)
return nil, err
}
cfNames, err := rocks.ListColumnFamilies(opts, options.Directory)
if err != nil {
// FIXME: we need to be sure if this means the db does not exist for now
// so that we cannot list the column families
log.Errorf("Failed to collect the column family names, %s", err)
} else {
log.Debugf("Got column family names for the existing db, %+v", cfNames)
}
if len(cfNames) == 0 {
// We create the default column family to get the column family handle
cfNames = []string{"default"}
}
cfOpts := make([]*rocks.Options, len(cfNames))
for i := range cfNames {
cfOpts[i] = opts
}
db, cfHandles, err := rocks.OpenDbColumnFamilies(opts, options.Directory, cfNames, cfOpts)
if err != nil {
log.Errorf("Failed to open rocks database, %s", err)
return nil, err
}
s.DB = db
s.dbOpts = opts
s.ro = rocks.NewDefaultReadOptions()
s.ro.SetFillCache(false)
s.ro.SetTailing(!options.DisableTailing)
s.wo = rocks.NewDefaultWriteOptions()
s.wo.DisableWAL(options.DisableWAL)
s.wo.SetSync(options.Sync)
if len(cfNames) > 0 {
for i := range cfNames {
s.cfHandles[cfNames[i]] = cfHandles[i]
}
}
return s, nil
}
func applyConfig(o *gorocksdb.Options, config map[string]interface{}) (
*gorocksdb.Options, error) {
cim, ok := config["create_if_missing"].(bool)
if ok {
o.SetCreateIfMissing(cim)
}
eie, ok := config["error_if_exists"].(bool)
if ok {
o.SetErrorIfExists(eie)
}
pc, ok := config["paranoid_checks"].(bool)
if ok {
o.SetParanoidChecks(pc)
}
ill, ok := config["info_log_level"].(float64)
if ok {
o.SetInfoLogLevel(gorocksdb.InfoLogLevel(int(ill)))
}
tt, ok := config["total_threads"].(float64)
if ok {
o.IncreaseParallelism(int(tt))
}
ofpl, ok := config["optimize_for_point_lookup"].(float64)
if ok {
o.OptimizeForPointLookup(uint64(ofpl))
}
olsc, ok := config["optimize_level_style_compaction"].(float64)
if ok {
o.OptimizeLevelStyleCompaction(uint64(olsc))
}
ousc, ok := config["optimize_universal_style_compaction"].(float64)
if ok {
o.OptimizeUniversalStyleCompaction(uint64(ousc))
}
wbs, ok := config["write_buffer_size"].(float64)
if ok {
o.SetWriteBufferSize(int(wbs))
}
mwbn, ok := config["max_write_buffer_number"].(float64)
if ok {
o.SetMaxWriteBufferNumber(int(mwbn))
}
mwbntm, ok := config["min_write_buffer_number_to_merge"].(float64)
if ok {
o.SetMinWriteBufferNumberToMerge(int(mwbntm))
}
mof, ok := config["max_open_files"].(float64)
if ok {
o.SetMaxOpenFiles(int(mof))
}
c, ok := config["compression"].(float64)
if ok {
o.SetCompression(gorocksdb.CompressionType(int(c)))
}
mltc, ok := config["min_level_to_compress"].(float64)
if ok {
o.SetMinLevelToCompress(int(mltc))
}
nl, ok := config["num_levels"].(float64)
if ok {
o.SetNumLevels(int(nl))
}
lfnct, ok := config["level0_file_num_compaction_trigger"].(float64)
if ok {
o.SetLevel0FileNumCompactionTrigger(int(lfnct))
}
lswt, ok := config["level0_slowdown_writes_trigger"].(float64)
if ok {
o.SetLevel0SlowdownWritesTrigger(int(lswt))
}
lstopwt, ok := config["level0_stop_writes_trigger"].(float64)
if ok {
o.SetLevel0StopWritesTrigger(int(lstopwt))
}
mmcl, ok := config["max_mem_compaction_level"].(float64)
if ok {
o.SetMaxMemCompactionLevel(int(mmcl))
}
tfsb, ok := config["target_file_size_base"].(float64)
if ok {
o.SetTargetFileSizeBase(uint64(tfsb))
}
tfsm, ok := config["target_file_size_multiplier"].(float64)
if ok {
o.SetTargetFileSizeMultiplier(int(tfsm))
}
mbflb, ok := config["max_bytes_for_level_base"].(float64)
if ok {
o.SetMaxBytesForLevelBase(uint64(mbflb))
}
mbflm, ok := config["max_bytes_for_level_multiplier"].(float64)
if ok {
o.SetMaxBytesForLevelMultiplier(int(mbflm))
}
ecf, ok := config["expanded_compaction_factor"].(float64)
if ok {
o.SetExpandedCompactionFactor(int(ecf))
}
scf, ok := config["source_compaction_factor"].(float64)
if ok {
o.SetSourceCompactionFactor(int(scf))
}
mgof, ok := config["max_grandparent_overlap_factor"].(float64)
if ok {
o.SetMaxGrandparentOverlapFactor(int(mgof))
}
dds, ok := config["disable_data_sync"].(bool)
if ok {
o.SetDisableDataSync(dds)
}
uf, ok := config["use_fsync"].(bool)
if ok {
o.SetUseFsync(uf)
}
dofpm, ok := config["delete_obsolete_files_period_micros"].(float64)
if ok {
o.SetDeleteObsoleteFilesPeriodMicros(uint64(dofpm))
}
mbc, ok := config["max_background_compactions"].(float64)
if ok {
o.SetMaxBackgroundCompactions(int(mbc))
}
mbf, ok := config["max_background_flushes"].(float64)
if ok {
o.SetMaxBackgroundFlushes(int(mbf))
}
mlfs, ok := config["max_log_file_size"].(float64)
if ok {
o.SetMaxLogFileSize(int(mlfs))
}
lfttr, ok := config["log_file_time_to_roll"].(float64)
if ok {
o.SetLogFileTimeToRoll(int(lfttr))
}
klfn, ok := config["keep_log_file_num"].(float64)
if ok {
o.SetKeepLogFileNum(int(klfn))
}
hrl, ok := config["hard_rate_limit"].(float64)
if ok {
o.SetHardRateLimit(hrl)
}
rldmm, ok := config["rate_limit_delay_max_millisecond"].(float64)
if ok {
o.SetRateLimitDelayMaxMilliseconds(uint(rldmm))
}
mmfs, ok := config["max_manifest_file_size"].(float64)
if ok {
o.SetMaxManifestFileSize(uint64(mmfs))
}
tcnsb, ok := config["table_cache_numshardbits"].(float64)
if ok {
o.SetTableCacheNumshardbits(int(tcnsb))
}
tcrscl, ok := config["table_cache_remove_scan_count_limit"].(float64)
if ok {
o.SetTableCacheRemoveScanCountLimit(int(tcrscl))
}
abs, ok := config["arena_block_size"].(float64)
if ok {
o.SetArenaBlockSize(int(abs))
}
dac, ok := config["disable_auto_compactions"].(bool)
if ok {
o.SetDisableAutoCompactions(dac)
}
wts, ok := config["WAL_ttl_seconds"].(float64)
if ok {
o.SetWALTtlSeconds(uint64(wts))
}
wslm, ok := config["WAL_size_limit_MB"].(float64)
if ok {
o.SetWalSizeLimitMb(uint64(wslm))
}
mps, ok := config["manifest_preallocation_size"].(float64)
if ok {
o.SetManifestPreallocationSize(int(mps))
}
prkwf, ok := config["purge_redundant_kvs_while_flush"].(bool)
if ok {
o.SetPurgeRedundantKvsWhileFlush(prkwf)
}
aob, ok := config["allow_os_buffer"].(bool)
if ok {
o.SetAllowOsBuffer(aob)
}
amr, ok := config["allow_mmap_reads"].(bool)
if ok {
o.SetAllowMmapReads(amr)
}
amw, ok := config["allow_mmap_writes"].(bool)
if ok {
o.SetAllowMmapWrites(amw)
}
sleor, ok := config["skip_log_error_on_recovery"].(bool)
if ok {
o.SetSkipLogErrorOnRecovery(sleor)
}
sdps, ok := config["stats_dump_period_sec"].(float64)
if ok {
o.SetStatsDumpPeriodSec(uint(sdps))
}
aroo, ok := config["advise_random_on_open"].(bool)
if ok {
o.SetAdviseRandomOnOpen(aroo)
}
ahocs, ok := config["access_hint_on_compaction_start"].(float64)
if ok {
o.SetAccessHintOnCompactionStart(gorocksdb.CompactionAccessPattern(uint(ahocs)))
}
uam, ok := config["use_adaptive_mutex"].(bool)
if ok {
o.SetUseAdaptiveMutex(uam)
}
bps, ok := config["bytes_per_sync"].(float64)
if ok {
o.SetBytesPerSync(uint64(bps))
}
cs, ok := config["compaction_style"].(float64)
if ok {
o.SetCompactionStyle(gorocksdb.CompactionStyle(uint(cs)))
}
vcic, ok := config["verify_checksums_in_compaction"].(bool)
if ok {
o.SetVerifyChecksumsInCompaction(vcic)
}
mssii, ok := config["max_sequential_skip_in_iterations"].(float64)
if ok {
o.SetMaxSequentialSkipInIterations(uint64(mssii))
}
ius, ok := config["inplace_update_support"].(bool)
if ok {
o.SetInplaceUpdateSupport(ius)
}
iunl, ok := config["inplace_update_num_locks"].(float64)
if ok {
o.SetInplaceUpdateNumLocks(int(iunl))
}
es, ok := config["enable_statistics"].(bool)
if ok && es {
o.EnableStatistics()
}
pfbl, ok := config["prepare_for_bulk_load"].(bool)
if ok && pfbl {
o.PrepareForBulkLoad()
}
// options in the block based table options object
bbto := gorocksdb.NewDefaultBlockBasedTableOptions()
lcc, ok := config["lru_cache_capacity"].(float64)
if ok {
c := gorocksdb.NewLRUCache(int(lcc))
bbto.SetBlockCache(c)
}
bfbpk, ok := config["bloom_filter_bits_per_key"].(float64)
if ok {
bf := gorocksdb.NewBloomFilter(int(bfbpk))
bbto.SetFilterPolicy(bf)
}
// set the block based table options
o.SetBlockBasedTableFactory(bbto)
return o, nil
}
func (db *rocksDB) initialize(path string, conf *config) error {
if conf == nil {
conf = newDefaultConfig()
}
// Create path if not exists first
if err := os.MkdirAll(path, 0700); err != nil {
return errors.Trace(err)
}
opts := gorocksdb.NewDefaultOptions()
opts.SetCreateIfMissing(true)
opts.SetErrorIfExists(false)
opts.SetCompression(gorocksdb.CompressionType(conf.CompressionType))
opts.SetWriteBufferSize(conf.WriteBufferSize)
opts.SetMaxOpenFiles(conf.MaxOpenFiles)
opts.SetNumLevels(conf.NumLevels)
opts.SetMaxWriteBufferNumber(conf.MaxWriteBufferNumber)
opts.SetMinWriteBufferNumberToMerge(conf.MinWriteBufferNumberToMerge)
opts.SetLevel0FileNumCompactionTrigger(conf.Level0FileNumCompactionTrigger)
opts.SetLevel0SlowdownWritesTrigger(conf.Level0SlowdownWritesTrigger)
opts.SetLevel0StopWritesTrigger(conf.Level0StopWritesTrigger)
opts.SetTargetFileSizeBase(uint64(conf.TargetFileSizeBase))
opts.SetTargetFileSizeMultiplier(conf.TargetFileSizeMultiplier)
opts.SetMaxBytesForLevelBase(uint64(conf.MaxBytesForLevelBase))
opts.SetMaxBytesForLevelMultiplier(conf.MaxBytesForLevelMultiplier)
opts.SetDisableAutoCompactions(conf.DisableAutoCompactions)
opts.SetDisableDataSync(conf.DisableDataSync)
opts.SetUseFsync(conf.UseFsync)
opts.SetMaxBackgroundCompactions(conf.MaxBackgroundCompactions)
opts.SetMaxBackgroundFlushes(conf.MaxBackgroundFlushes)
opts.SetAllowOsBuffer(conf.AllowOSBuffer)
topts := gorocksdb.NewDefaultBlockBasedTableOptions()
topts.SetBlockSize(conf.BlockSize)
cache := gorocksdb.NewLRUCache(conf.CacheSize)
topts.SetBlockCache(cache)
topts.SetFilterPolicy(gorocksdb.NewBloomFilter(conf.BloomFilterSize))
opts.SetBlockBasedTableFactory(topts)
env := gorocksdb.NewDefaultEnv()
env.SetBackgroundThreads(conf.BackgroundThreads)
env.SetHighPriorityBackgroundThreads(conf.HighPriorityBackgroundThreads)
opts.SetEnv(env)
db.path = path
db.opts = opts
db.ropt = gorocksdb.NewDefaultReadOptions()
db.wopt = gorocksdb.NewDefaultWriteOptions()
db.env = env
db.topts = topts
db.cache = cache
db.snapshotFillCache = conf.SnapshotFillCache
var err error
if db.rkdb, err = gorocksdb.OpenDb(db.opts, db.path); err != nil {
return errors.Trace(err)
}
return nil
}
func (rh *RocksDBHandler) Init() error {
rh.options = rocks.NewDefaultOptions()
rh.options.SetBlockCache(rocks.NewLRUCache(rh.cacheSize))
rh.options.SetBlockSize(rh.blockSize)
rh.options.SetCreateIfMissing(rh.createIfMissing)
if rh.bloomFilter > 0 {
rh.options.SetFilterPolicy(rocks.NewBloomFilter(rh.bloomFilter))
}
if rh.maxOpenFiles > 0 {
rh.options.SetMaxOpenFiles(rh.maxOpenFiles)
}
switch rh.compression {
case "no":
rh.options.SetCompression(rocks.NoCompression)
case "snappy":
rh.options.SetCompression(rocks.SnappyCompression)
case "zlib":
rh.options.SetCompression(rocks.ZlibCompression)
case "bzip2":
rh.options.SetCompression(rocks.BZip2Compression)
}
switch rh.compactionStyle {
case "level":
rh.options.SetCompactionStyle(rocks.LevelCompactionStyle)
case "universal":
rh.options.SetCompactionStyle(rocks.UniversalCompactionStyle)
}
rh.dsMergers = make(map[string]DataStructureMerger)
rh.dsMergers[kRedisString] = &StringMerger{}
rh.dsMergers[kRedisList] = &ListMerger{}
rh.dsMergers[kRedisHash] = &HashMerger{}
rh.dsMergers[kRedisSet] = &SetMerger{}
if rh.maxMerge > 0 {
rh.options.SetMaxSuccessiveMerges(rh.maxMerge)
}
rh.options.SetMergeOperator(rocks.NewMergeOperator(rh))
db, err := rocks.OpenDb(rh.options, rh.dbDir)
if err != nil {
rh.Close()
return err
}
rh.db = db
infos := []string{
fmt.Sprintf("dbDir=%s", rh.dbDir),
fmt.Sprintf("cacheSize=%d", rh.cacheSize),
fmt.Sprintf("blockSize=%d", rh.blockSize),
fmt.Sprintf("createIfMissing=%v", rh.createIfMissing),
fmt.Sprintf("bloomFilter=%d", rh.bloomFilter),
fmt.Sprintf("compression=%s", rh.compression),
fmt.Sprintf("compactionStyle=%s", rh.compactionStyle),
fmt.Sprintf("maxOpenFiles=%d", rh.maxOpenFiles),
fmt.Sprintf("maxMerge=%d", rh.maxMerge),
}
log.Printf("[RocksDBHandler] Inited, %s", strings.Join(infos, ", "))
return nil
}