import { BigEndianScalar } from '../structs/BigEndianScalar.mjs';
import { AccessError } from '../enums/AccessError.mjs';
import { COption_NoneZ } from '../enums/COption_NoneZ.mjs';
-import { ChannelMonitorUpdateErr } from '../enums/ChannelMonitorUpdateErr.mjs';
+import { ChannelMonitorUpdateStatus } from '../enums/ChannelMonitorUpdateStatus.mjs';
import { ConfirmationTarget } from '../enums/ConfirmationTarget.mjs';
import { CreationError } from '../enums/CreationError.mjs';
import { Currency } from '../enums/Currency.mjs';
import { MessageSendEvent } from '../structs/MessageSendEvent.mjs';
import { Result_TxOutAccessErrorZ } from '../structs/Result_TxOutAccessErrorZ.mjs';
import { TwoTuple_usizeTransactionZ } from '../structs/TwoTuple_usizeTransactionZ.mjs';
-import { Result_NoneChannelMonitorUpdateErrZ } from '../structs/Result_NoneChannelMonitorUpdateErrZ.mjs';
import { HTLCUpdate } from '../structs/HTLCUpdate.mjs';
import { MonitorEvent } from '../structs/MonitorEvent.mjs';
import { ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ } from '../structs/ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ.mjs';
import { TwoTuple_SignatureSignatureZ } from '../structs/TwoTuple_SignatureSignatureZ.mjs';
import { Result_C2Tuple_SignatureSignatureZNoneZ } from '../structs/Result_C2Tuple_SignatureSignatureZNoneZ.mjs';
import { Result_SecretKeyNoneZ } from '../structs/Result_SecretKeyNoneZ.mjs';
+import { Result_PublicKeyNoneZ } from '../structs/Result_PublicKeyNoneZ.mjs';
import { Option_ScalarZ } from '../structs/Option_ScalarZ.mjs';
import { Result_SharedSecretNoneZ } from '../structs/Result_SharedSecretNoneZ.mjs';
import { ClosingTransaction } from '../structs/ClosingTransaction.mjs';
import { TwoTuple_BlockHashChannelMonitorZ } from '../structs/TwoTuple_BlockHashChannelMonitorZ.mjs';
import { Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ } from '../structs/Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.mjs';
import { TwoTuple_PublicKeyTypeZ } from '../structs/TwoTuple_PublicKeyTypeZ.mjs';
+import { CustomOnionMessageContents, CustomOnionMessageContentsInterface } from '../structs/CustomOnionMessageContents.mjs';
+import { Option_CustomOnionMessageContentsZ } from '../structs/Option_CustomOnionMessageContentsZ.mjs';
+import { Result_COption_CustomOnionMessageContentsZDecodeErrorZ } from '../structs/Result_COption_CustomOnionMessageContentsZDecodeErrorZ.mjs';
import { Option_NetAddressZ } from '../structs/Option_NetAddressZ.mjs';
import { PeerHandleError } from '../structs/PeerHandleError.mjs';
import { Result_CVec_u8ZPeerHandleErrorZ } from '../structs/Result_CVec_u8ZPeerHandleErrorZ.mjs';
import { CustomMessageReader, CustomMessageReaderInterface } from '../structs/CustomMessageReader.mjs';
import { CustomMessageHandler, CustomMessageHandlerInterface } from '../structs/CustomMessageHandler.mjs';
import { IgnoringMessageHandler } from '../structs/IgnoringMessageHandler.mjs';
+import { CustomOnionMessageHandler, CustomOnionMessageHandlerInterface } from '../structs/CustomOnionMessageHandler.mjs';
import { ErroringMessageHandler } from '../structs/ErroringMessageHandler.mjs';
import { MessageHandler } from '../structs/MessageHandler.mjs';
import { SocketDescriptor, SocketDescriptorInterface } from '../structs/SocketDescriptor.mjs';
/**
* [`Score`] implementation using channel success probability distributions.
*
- * Based on *Optimally Reliable & Cheap Payment Flows on the Lightning Network* by Rene Pickhardt
- * and Stefan Richter [[1]]. Given the uncertainty of channel liquidity balances, probability
- * distributions are defined based on knowledge learned from successful and unsuccessful attempts.
- * Then the negative `log10` of the success probability is used to determine the cost of routing a
- * specific HTLC amount through a channel.
+ * Channels are tracked with upper and lower liquidity bounds - when an HTLC fails at a channel,
+ * we learn that the upper-bound on the available liquidity is lower than the amount of the HTLC.
+ * When a payment is forwarded through a channel (but fails later in the route), we learn the
+ * lower-bound on the channel's available liquidity must be at least the value of the HTLC.
*
- * Knowledge about channel liquidity balances takes the form of upper and lower bounds on the
- * possible liquidity. Certainty of the bounds is decreased over time using a decay function. See
- * [`ProbabilisticScoringParameters`] for details.
+ * These bounds are then used to determine a success probability using the formula from
+ * Optimally Reliable & Cheap Payment Flows on the Lightning Network* by Rene Pickhardt
+ * and Stefan Richter [[1]] (i.e. `(upper_bound - payment_amount) / (upper_bound - lower_bound)`).
*
- * Since the scorer aims to learn the current channel liquidity balances, it works best for nodes
- * with high payment volume or that actively probe the [`NetworkGraph`]. Nodes with low payment
- * volume are more likely to experience failed payment paths, which would need to be retried.
+ * This probability is combined with the [`liquidity_penalty_multiplier_msat`] and
+ * [`liquidity_penalty_amount_multiplier_msat`] parameters to calculate a concrete penalty in
+ * milli-satoshis. The penalties, when added across all hops, have the property of being linear in
+ * terms of the entire path's success probability. This allows the router to directly compare
+ * penalties for different paths. See the documentation of those parameters for the exact formulas.
+ *
+ * The liquidity bounds are decayed by halving them every [`liquidity_offset_half_life`].
+ *
+ * Further, we track the history of our upper and lower liquidity bounds for each channel,
+ * allowing us to assign a second penalty (using [`historical_liquidity_penalty_multiplier_msat`]
+ * and [`historical_liquidity_penalty_amount_multiplier_msat`]) based on the same probability
+ * formula, but using the history of a channel rather than our latest estimates for the liquidity
+ * bounds.
*
* # Note
*
* behavior.
*
* [1]: https://arxiv.org/abs/2107.05322
+ * [`liquidity_penalty_multiplier_msat`]: ProbabilisticScoringParameters::liquidity_penalty_multiplier_msat
+ * [`liquidity_penalty_amount_multiplier_msat`]: ProbabilisticScoringParameters::liquidity_penalty_amount_multiplier_msat
+ * [`liquidity_offset_half_life`]: ProbabilisticScoringParameters::liquidity_offset_half_life
+ * [`historical_liquidity_penalty_multiplier_msat`]: ProbabilisticScoringParameters::historical_liquidity_penalty_multiplier_msat
+ * [`historical_liquidity_penalty_amount_multiplier_msat`]: ProbabilisticScoringParameters::historical_liquidity_penalty_amount_multiplier_msat
*/
export class ProbabilisticScorer extends CommonBase {
/* @internal */
- public constructor(_dummy: object, ptr: bigint) {
+ public constructor(_dummy: null, ptr: bigint) {
super(ptr, bindings.ProbabilisticScorer_free);
}
projects / ldk-java / blobdiff