channeldb: move fwding policy code to new file

channeldb/db.go

@@ -312,11 +312,6 @@ var (
 	// channelOpeningState for each channel that is currently in the process
 	// of being opened.
 	channelOpeningStateBucket = []byte("channelOpeningState")
-
-	// initialChannelFwdingPolicyBucket is the database bucket used to store
-	// the forwarding policy for each permanent channel that is currently
-	// in the process of being opened.
-	initialChannelFwdingPolicyBucket = []byte("initialChannelFwdingPolicy")
 )
 
 // DB is the primary datastore for the lnd daemon. The database stores
@@ -1433,64 +1428,6 @@ func (c *ChannelStateDB) AbandonChannel(chanPoint *wire.OutPoint,
 	return dbChan.CloseChannel(summary, ChanStatusLocalCloseInitiator)
 }
 
-// SaveInitialFwdingPolicy saves the serialized forwarding policy for the
-// provided permanent channel id to the initialChannelFwdingPolicyBucket.
-func (c *ChannelStateDB) SaveInitialFwdingPolicy(chanID,
-	forwardingPolicy []byte) error {
-
-	return kvdb.Update(c.backend, func(tx kvdb.RwTx) error {
-		bucket, err := tx.CreateTopLevelBucket(
-			initialChannelFwdingPolicyBucket,
-		)
-		if err != nil {
-			return err
-		}
-
-		return bucket.Put(chanID, forwardingPolicy)
-	}, func() {})
-}
-
-// GetInitialFwdingPolicy fetches the serialized forwarding policy for the
-// provided channel id from the database, or returns ErrChannelNotFound if
-// a forwarding policy for this channel id is not found.
-func (c *ChannelStateDB) GetInitialFwdingPolicy(chanID []byte) ([]byte, error) {
-	var serializedState []byte
-	err := kvdb.View(c.backend, func(tx kvdb.RTx) error {
-		bucket := tx.ReadBucket(initialChannelFwdingPolicyBucket)
-		if bucket == nil {
-			// If the bucket does not exist, it means we
-			// never added a channel fees to the db, so
-			// return ErrChannelNotFound.
-			return ErrChannelNotFound
-		}
-
-		stateBytes := bucket.Get(chanID)
-		if stateBytes == nil {
-			return ErrChannelNotFound
-		}
-
-		serializedState = append(serializedState, stateBytes...)
-
-		return nil
-	}, func() {
-		serializedState = nil
-	})
-	return serializedState, err
-}
-
-// DeleteInitialFwdingPolicy removes the forwarding policy for a given channel
-// from the database.
-func (c *ChannelStateDB) DeleteInitialFwdingPolicy(chanID []byte) error {
-	return kvdb.Update(c.backend, func(tx kvdb.RwTx) error {
-		bucket := tx.ReadWriteBucket(initialChannelFwdingPolicyBucket)
-		if bucket == nil {
-			return ErrChannelNotFound
-		}
-
-		return bucket.Delete(chanID)
-	}, func() {})
-}
-
 // SaveChannelOpeningState saves the serialized channel state for the provided
 // chanPoint to the channelOpeningStateBucket.
 func (c *ChannelStateDB) SaveChannelOpeningState(outPoint,