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The final database that needs to be made remote compatible is the watchtower server and client database. They are handled a bit differently because both of them are not always active, only when specifically turned on in the config.
46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
package wtdb
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import (
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"encoding/binary"
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"errors"
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"github.com/lightningnetwork/lnd/kvdb"
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)
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var (
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// metadataBkt stores all the meta information concerning the state of
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// the database.
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metadataBkt = []byte("metadata-bucket")
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// dbVersionKey is a static key used to retrieve the database version
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// number from the metadataBkt.
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dbVersionKey = []byte("version")
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// ErrUninitializedDB signals that top-level buckets for the database
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// have not been initialized.
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ErrUninitializedDB = errors.New("db not initialized")
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// ErrNoDBVersion signals that the database contains no version info.
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ErrNoDBVersion = errors.New("db has no version")
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// byteOrder is the default endianness used when serializing integers.
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byteOrder = binary.BigEndian
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)
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// isFirstInit returns true if the given database has not yet been initialized,
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// e.g. no metadata bucket is present yet.
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func isFirstInit(db kvdb.Backend) (bool, error) {
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var metadataExists bool
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err := kvdb.View(db, func(tx kvdb.RTx) error {
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metadataExists = tx.ReadBucket(metadataBkt) != nil
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return nil
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}, func() {
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metadataExists = false
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})
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if err != nil {
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return false, err
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}
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return !metadataExists, nil
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}
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