mirror of
https://github.com/lightningnetwork/lnd.git
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777ed104a3
In this commit, we create a new chainfee package, that houses all fee related functionality used within the codebase. The creation of this new package furthers our long-term goal of extracting functionality from the bloated `lnwallet` package into new distinct packages. Additionally, this new packages resolves a class of import cycle that could arise if a new package that was imported by something in `lnwallet` wanted to use the existing fee related functions in the prior `lnwallet` package.
79 lines
1.6 KiB
Go
79 lines
1.6 KiB
Go
package sweep
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import (
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"sync"
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"github.com/lightningnetwork/lnd/lnwallet/chainfee"
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)
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// mockFeeEstimator implements a mock fee estimator. It closely resembles
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// lnwallet.StaticFeeEstimator with the addition that fees can be changed for
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// testing purposes in a thread safe manner.
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type mockFeeEstimator struct {
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feePerKW chainfee.SatPerKWeight
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relayFee chainfee.SatPerKWeight
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blocksToFee map[uint32]chainfee.SatPerKWeight
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// A closure that when set is used instead of the
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// mockFeeEstimator.EstimateFeePerKW method.
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estimateFeePerKW func(numBlocks uint32) (chainfee.SatPerKWeight, error)
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lock sync.Mutex
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}
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func newMockFeeEstimator(feePerKW,
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relayFee chainfee.SatPerKWeight) *mockFeeEstimator {
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return &mockFeeEstimator{
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feePerKW: feePerKW,
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relayFee: relayFee,
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blocksToFee: make(map[uint32]chainfee.SatPerKWeight),
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}
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}
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func (e *mockFeeEstimator) updateFees(feePerKW,
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relayFee chainfee.SatPerKWeight) {
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e.lock.Lock()
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defer e.lock.Unlock()
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e.feePerKW = feePerKW
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e.relayFee = relayFee
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}
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func (e *mockFeeEstimator) EstimateFeePerKW(numBlocks uint32) (
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chainfee.SatPerKWeight, error) {
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e.lock.Lock()
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defer e.lock.Unlock()
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if e.estimateFeePerKW != nil {
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return e.estimateFeePerKW(numBlocks)
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}
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if fee, ok := e.blocksToFee[numBlocks]; ok {
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return fee, nil
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}
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return e.feePerKW, nil
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}
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func (e *mockFeeEstimator) RelayFeePerKW() chainfee.SatPerKWeight {
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e.lock.Lock()
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defer e.lock.Unlock()
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return e.relayFee
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}
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func (e *mockFeeEstimator) Start() error {
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return nil
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}
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func (e *mockFeeEstimator) Stop() error {
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return nil
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}
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var _ chainfee.Estimator = (*mockFeeEstimator)(nil)
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