78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package pointerdb
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import (
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"context"
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"go.uber.org/zap"
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"storj.io/storj/pkg/overlay"
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"storj.io/storj/pkg/pb"
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"storj.io/storj/pkg/provider"
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"storj.io/storj/pkg/utils"
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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/postgreskv"
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"storj.io/storj/storage/storelogger"
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)
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// CtxKeyPointerdb Used as pointerdb key
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type CtxKeyPointerdb int
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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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ctxKey CtxKeyPointerdb = iota
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)
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// Config is a configuration struct that is everything you need to start a
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// PointerDB responsibility
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type Config struct {
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DatabaseURL string `help:"the database connection string to use" default:"bolt://$CONFDIR/pointerdb.db"`
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MinRemoteSegmentSize int `default:"1240" help:"minimum remote segment size"`
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MaxInlineSegmentSize int `default:"8000" help:"maximum inline segment size"`
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Overlay bool `default:"true" help:"toggle flag if overlay is enabled"`
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}
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func newKeyValueStore(dbURLString string) (db storage.KeyValueStore, err error) {
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driver, source, err := utils.SplitDBURL(dbURLString)
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if err != nil {
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return nil, err
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}
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if driver == "bolt" {
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db, err = boltdb.New(source, BoltPointerBucket)
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} else if driver == "postgresql" || driver == "postgres" {
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db, err = postgreskv.New(source)
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} else {
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err = Error.New("unsupported db scheme: %s", driver)
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}
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return db, err
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}
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// Run implements the provider.Responsibility interface
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func (c Config) Run(ctx context.Context, server *provider.Provider) error {
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db, err := newKeyValueStore(c.DatabaseURL)
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if err != nil {
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return err
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}
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defer func() { _ = db.Close() }()
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cache := overlay.LoadFromContext(ctx)
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dblogged := storelogger.New(zap.L(), db)
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s := NewServer(dblogged, cache, zap.L(), c, server.Identity())
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pb.RegisterPointerDBServer(server.GRPC(), s)
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// add the server to the context
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ctx = context.WithValue(ctx, ctxKey, s)
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return server.Run(ctx)
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}
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// LoadFromContext gives access to the pointerdb server from the context, or returns nil
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func LoadFromContext(ctx context.Context) *Server {
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if v, ok := ctx.Value(ctxKey).(*Server); ok {
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return v
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}
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return nil
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}
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