6ef2770e57
In this commit, we move the FeeEstimator interface into a distinct file as follow up commits will begin to flesh out the interface with additional implementations.
41 lines
1.5 KiB
Go
41 lines
1.5 KiB
Go
package lnwallet
|
|
|
|
// 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).
|
|
type FeeEstimator interface {
|
|
// EstimateFeePerByte takes in a target for the number of blocks until
|
|
// an initial confirmation and returns the estimated fee expressed in
|
|
// satoshis/byte.
|
|
EstimateFeePerByte(numBlocks uint32) uint64
|
|
|
|
// EstimateFeePerWeight takes in a target for the number of blocks
|
|
// until an initial confirmation and returns the estimated fee
|
|
// expressed in satoshis/weight.
|
|
EstimateFeePerWeight(numBlocks uint32) uint64
|
|
}
|
|
|
|
// StaticFeeEstimator will return a static value for all fee calculation
|
|
// requests. It is designed to be replaced by a proper fee calculation
|
|
// implementation.
|
|
type StaticFeeEstimator struct {
|
|
// FeeRate is the static fee rate in satoshis-per-byte that will be
|
|
// returned by this fee estimator. Queries for the fee rate in weight
|
|
// units will be scaled accordingly.
|
|
FeeRate uint64
|
|
}
|
|
|
|
// EstimateFeePerByte will return a static value for fee calculations.
|
|
func (e StaticFeeEstimator) EstimateFeePerByte(numBlocks uint32) uint64 {
|
|
return e.FeeRate
|
|
}
|
|
|
|
// EstimateFeePerWeight will return a static value for fee calculations.
|
|
func (e StaticFeeEstimator) EstimateFeePerWeight(numBlocks uint32) uint64 {
|
|
return e.FeeRate / 4
|
|
}
|
|
|
|
// A compile-time assertion to ensure that StaticFeeEstimator implements the
|
|
// FeeEstimator interface.
|
|
var _ FeeEstimator = (*StaticFeeEstimator)(nil)
|