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lnwallet: add configurable cache for web fee estimator

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Add fee.min-update-timeout and fee.max-update-timeout config options to
allow configuration of the web fee estimator cache.
This commit is contained in:
Tom Kirkpatrick
2024-04-23 09:49:04 +02:00
committed by yyforyongyu
parent fa616ee059
commit 3837c3f12e
15 changed files with 202 additions and 55 deletions
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39
chainreg/chainregistry.go
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@@ -77,10 +77,14 @@ type Config struct {
// ActiveNetParams details the current chain we are on.
ActiveNetParams BitcoinNetParams
// FeeURL defines the URL for fee estimation we will use. This field is
// optional.
// Deprecated: Use Fee.URL. FeeURL defines the URL for fee estimation
// we will use. This field is optional.
FeeURL string
// Fee defines settings for the web fee estimator. This field is
// optional.
Fee *lncfg.Fee
// Dialer is a function closure that will be used to establish outbound
// TCP connections to Bitcoin peers in the event of a pruned block being
// requested.
@@ -243,6 +247,16 @@ func NewPartialChainControl(cfg *Config) (*PartialChainControl, func(), error) {
"cache: %v", err)
}
// Map the deprecated feeurl flag to fee.url.
if cfg.FeeURL != "" {
if cfg.Fee.URL != "" {
return nil, nil, errors.New("fee.url and " +
"feeurl are mutually exclusive")
}
cfg.Fee.URL = cfg.FeeURL
}
// If spv mode is active, then we'll be using a distinct set of
// chainControl interfaces that interface directly with the p2p network
// of the selected chain.
@@ -682,27 +696,34 @@ func NewPartialChainControl(cfg *Config) (*PartialChainControl, func(), error) {
// If the fee URL isn't set, and the user is running mainnet, then
// we'll return an error to instruct them to set a proper fee
// estimator.
case cfg.FeeURL == "" && cfg.Bitcoin.MainNet &&
case cfg.Fee.URL == "" && cfg.Bitcoin.MainNet &&
cfg.Bitcoin.Node == "neutrino":
return nil, nil, fmt.Errorf("--feeurl parameter required " +
return nil, nil, fmt.Errorf("--fee.url parameter required " +
"when running neutrino on mainnet")
// Override default fee estimator if an external service is specified.
case cfg.FeeURL != "":
case cfg.Fee.URL != "":
// Do not cache fees on regtest to make it easier to execute
// manual or automated test cases.
cacheFees := !cfg.Bitcoin.RegTest
log.Infof("Using external fee estimator %v: cached=%v",
cfg.FeeURL, cacheFees)
log.Infof("Using external fee estimator %v: cached=%v: "+
"min update timeout=%v, max update timeout=%v",
cfg.Fee.URL, cacheFees, cfg.Fee.MinUpdateTimeout,
cfg.Fee.MaxUpdateTimeout)
cc.FeeEstimator = chainfee.NewWebAPIEstimator(
cc.FeeEstimator, err = chainfee.NewWebAPIEstimator(
chainfee.SparseConfFeeSource{
URL: cfg.FeeURL,
URL: cfg.Fee.URL,
},
!cacheFees,
cfg.Fee.MinUpdateTimeout,
cfg.Fee.MaxUpdateTimeout,
)
if err != nil {
return nil, nil, err
}
}
ccCleanup := func() {