67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
package lncfg
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import (
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"context"
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"fmt"
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"github.com/lightningnetwork/lnd/channeldb/kvdb"
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)
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const (
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dbName = "channel.db"
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boltBackend = "bolt"
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etcdBackend = "etcd"
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)
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// DB holds database configuration for LND.
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type DB struct {
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Backend string `long:"backend" description:"The selected database backend."`
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Etcd *kvdb.EtcdConfig `group:"etcd" namespace:"etcd" description:"Etcd settings."`
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Bolt *kvdb.BoltConfig `group:"bolt" namespace:"bolt" description:"Bolt settings."`
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}
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// NewDB creates and returns a new default DB config.
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func DefaultDB() *DB {
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return &DB{
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Backend: boltBackend,
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Bolt: &kvdb.BoltConfig{
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NoFreeListSync: true,
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},
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}
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}
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// Validate validates the DB config.
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func (db *DB) Validate() error {
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switch db.Backend {
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case boltBackend:
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case etcdBackend:
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if db.Etcd.Host == "" {
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return fmt.Errorf("etcd host must be set")
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}
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default:
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return fmt.Errorf("unknown backend, must be either \"%v\" or \"%v\"",
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boltBackend, etcdBackend)
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}
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return nil
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}
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// GetBackend returns a kvdb.Backend as set in the DB config.
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func (db *DB) GetBackend(ctx context.Context, dbPath string,
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networkName string) (kvdb.Backend, error) {
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if db.Backend == etcdBackend {
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// Prefix will separate key/values in the db.
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return kvdb.GetEtcdBackend(ctx, networkName, db.Etcd)
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}
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return kvdb.GetBoltBackend(dbPath, dbName, db.Bolt.NoFreeListSync)
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}
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// Compile-time constraint to ensure Workers implements the Validator interface.
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var _ Validator = (*DB)(nil)
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