Merge pull request #3026 from wpaulino/sweeper-fee-preference

sweep: add support for multiple fee preferences to UtxoSweeper

lnwallet/fee_estimator.go

@@ -54,6 +54,11 @@ func (s SatPerKVByte) FeePerKWeight() SatPerKWeight {
 	return SatPerKWeight(s / blockchain.WitnessScaleFactor)
 }
 
+// String returns a human-readable string of the fee rate.
+func (s SatPerKVByte) String() string {
+	return fmt.Sprintf("%v sat/kb", int64(s))
+}
+
 // SatPerKWeight represents a fee rate in sat/kw.
 type SatPerKWeight btcutil.Amount
 
@@ -69,6 +74,11 @@ func (s SatPerKWeight) FeePerKVByte() SatPerKVByte {
 	return SatPerKVByte(s * blockchain.WitnessScaleFactor)
 }
 
+// String returns a human-readable string of the fee rate.
+func (s SatPerKWeight) String() string {
+	return fmt.Sprintf("%v sat/kw", int64(s))
+}
+
 // FeeEstimator provides the ability to estimate on-chain transaction fees for
 // various combinations of transaction sizes and desired confirmation time
 // (measured by number of blocks).