81 lines
3.2 KiB
Go
81 lines
3.2 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package metainfo
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import (
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"time"
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"go.uber.org/zap"
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"storj.io/storj/private/dbutil"
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"storj.io/storj/private/memory"
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"storj.io/storj/storage"
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"storj.io/storj/storage/boltdb"
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"storj.io/storj/storage/cockroachkv"
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"storj.io/storj/storage/postgreskv"
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)
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const (
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// BoltPointerBucket is the string representing the bucket used for `PointerEntries` in BoltDB
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BoltPointerBucket = "pointers"
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)
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// RSConfig is a configuration struct that keeps details about default
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// redundancy strategy information
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type RSConfig struct {
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MaxSegmentSize memory.Size `help:"maximum segment size" default:"64MiB"`
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MaxBufferMem memory.Size `help:"maximum buffer memory to be allocated for read buffers" default:"4MiB"`
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ErasureShareSize memory.Size `help:"the size of each new erasure share in bytes" default:"256B"`
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MinThreshold int `help:"the minimum pieces required to recover a segment. k." releaseDefault:"29" devDefault:"4"`
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RepairThreshold int `help:"the minimum safe pieces before a repair is triggered. m." releaseDefault:"35" devDefault:"6"`
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SuccessThreshold int `help:"the desired total pieces for a segment. o." releaseDefault:"80" devDefault:"8"`
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MinTotalThreshold int `help:"the largest amount of pieces to encode to. n (lower bound for validation)." releaseDefault:"95" devDefault:"10"`
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MaxTotalThreshold int `help:"the largest amount of pieces to encode to. n (upper bound for validation)." releaseDefault:"130" devDefault:"10"`
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Validate bool `help:"validate redundancy scheme configuration" default:"true"`
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}
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// Config is a configuration struct that is everything you need to start a metainfo
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type Config struct {
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DatabaseURL string `help:"the database connection string to use" releaseDefault:"postgres://" devDefault:"bolt://$CONFDIR/pointerdb.db"`
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MinRemoteSegmentSize memory.Size `default:"1240" help:"minimum remote segment size"`
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MaxInlineSegmentSize memory.Size `default:"8000" help:"maximum inline segment size"`
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MaxCommitInterval time.Duration `default:"48h" help:"maximum time allowed to pass between creating and committing a segment"`
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Overlay bool `default:"true" help:"toggle flag if overlay is enabled"`
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RS RSConfig `help:"redundancy scheme configuration"`
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Loop LoopConfig `help:"metainfo loop configuration"`
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}
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// PointerDB stores pointers.
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//
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// architecture: Database
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type PointerDB interface {
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storage.KeyValueStore
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}
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// NewStore returns database for storing pointer data
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func NewStore(logger *zap.Logger, dbURLString string) (db PointerDB, err error) {
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_, source, implementation, err := dbutil.SplitConnStr(dbURLString)
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if err != nil {
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return nil, err
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}
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switch implementation {
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case dbutil.Bolt:
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db, err = boltdb.New(source, BoltPointerBucket)
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case dbutil.Postgres:
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db, err = postgreskv.New(source)
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case dbutil.Cockroach:
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db, err = cockroachkv.New(source)
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default:
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err = Error.New("unsupported db implementation: %s", dbURLString)
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}
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if err != nil {
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return nil, err
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}
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logger.Debug("Connected to:", zap.String("db source", source))
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return db, nil
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}
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