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a73581610e
We make the capacity factor configurable via an lnd.conf routerrpc apriori parameter. The capacity factor trades off increased success probability with a reduced set of channel candidates, which may lead to increased fees. To let users choose whether the factor is active or not, we add a config setting where a capacity fraction of 1.0 disables the factor. We limit the capacity fraction to values between 0.75 and 1.0. Lower values may discard too many channels.
92 lines
3.2 KiB
Go
92 lines
3.2 KiB
Go
package routerrpc
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import (
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"github.com/lightningnetwork/lnd/macaroons"
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"github.com/lightningnetwork/lnd/routing"
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)
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// Config is the main configuration file for the router RPC server. It contains
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// all the items required for the router RPC server to carry out its duties.
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// The fields with struct tags are meant to be parsed as normal configuration
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// options, while if able to be populated, the latter fields MUST also be
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// specified.
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type Config struct {
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RoutingConfig
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// RouterMacPath is the path for the router macaroon. If unspecified
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// then we assume that the macaroon will be found under the network
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// directory, named DefaultRouterMacFilename.
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RouterMacPath string `long:"routermacaroonpath" description:"Path to the router macaroon"`
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// NetworkDir is the main network directory wherein the router rpc
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// server will find the macaroon named DefaultRouterMacFilename.
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NetworkDir string
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// MacService is the main macaroon service that we'll use to handle
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// authentication for the Router rpc server.
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MacService *macaroons.Service
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// Router is the main channel router instance that backs this RPC
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// server.
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//
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// TODO(roasbeef): make into pkg lvl interface?
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//
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// TODO(roasbeef): assumes router handles saving payment state
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Router *routing.ChannelRouter
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// RouterBackend contains shared logic between this sub server and the
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// main rpc server.
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RouterBackend *RouterBackend
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}
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// DefaultConfig defines the config defaults.
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func DefaultConfig() *Config {
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defaultRoutingConfig := RoutingConfig{
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ProbabilityEstimatorType: routing.DefaultEstimator,
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MinRouteProbability: routing.DefaultMinRouteProbability,
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AttemptCost: routing.DefaultAttemptCost.ToSatoshis(),
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AttemptCostPPM: routing.DefaultAttemptCostPPM,
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MaxMcHistory: routing.DefaultMaxMcHistory,
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McFlushInterval: routing.DefaultMcFlushInterval,
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AprioriConfig: &AprioriConfig{
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HopProbability: routing.DefaultAprioriHopProbability,
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Weight: routing.DefaultAprioriWeight,
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PenaltyHalfLife: routing.DefaultPenaltyHalfLife,
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CapacityFraction: routing.DefaultCapacityFraction,
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},
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BimodalConfig: &BimodalConfig{
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Scale: int64(routing.DefaultBimodalScaleMsat),
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NodeWeight: routing.DefaultBimodalNodeWeight,
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DecayTime: routing.DefaultBimodalDecayTime,
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},
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}
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return &Config{
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RoutingConfig: defaultRoutingConfig,
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}
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}
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// GetRoutingConfig returns the routing config based on this sub server config.
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func GetRoutingConfig(cfg *Config) *RoutingConfig {
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return &RoutingConfig{
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ProbabilityEstimatorType: cfg.ProbabilityEstimatorType,
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MinRouteProbability: cfg.MinRouteProbability,
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AttemptCost: cfg.AttemptCost,
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AttemptCostPPM: cfg.AttemptCostPPM,
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MaxMcHistory: cfg.MaxMcHistory,
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McFlushInterval: cfg.McFlushInterval,
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AprioriConfig: &AprioriConfig{
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HopProbability: cfg.AprioriConfig.HopProbability,
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Weight: cfg.AprioriConfig.Weight,
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PenaltyHalfLife: cfg.AprioriConfig.PenaltyHalfLife,
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CapacityFraction: cfg.AprioriConfig.CapacityFraction,
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},
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BimodalConfig: &BimodalConfig{
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Scale: cfg.BimodalConfig.Scale,
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NodeWeight: cfg.BimodalConfig.NodeWeight,
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DecayTime: cfg.BimodalConfig.DecayTime,
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},
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}
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}
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