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lightningnetwork / lnd / 13236757158

10 Feb 2025 08:39AM UTC coverage: 57.649% (-1.2%) from 58.815%
13236757158

Pull #9493

github

ziggie1984
lncli: for some cmds we don't replace the data of the response.

For some cmds it is not very practical to replace the json output
because we might pipe it into other commands. For example when
creating the route we want to pipe it into sendtoRoute.
Pull Request #9493: For some lncli cmds we should not replace the content with other data

0 of 9 new or added lines in 2 files covered. (0.0%)

19535 existing lines in 252 files now uncovered.

103517 of 179563 relevant lines covered (57.65%)

24878.49 hits per line

Source File
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83.05
/routing/payment_session_source.go
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package routing
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import (
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        "github.com/btcsuite/btcd/btcec/v2"
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        "github.com/lightningnetwork/lnd/fn/v2"
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        "github.com/lightningnetwork/lnd/graph/db/models"
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        "github.com/lightningnetwork/lnd/htlcswitch"
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        "github.com/lightningnetwork/lnd/lnwire"
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        "github.com/lightningnetwork/lnd/routing/route"
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        "github.com/lightningnetwork/lnd/tlv"
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        "github.com/lightningnetwork/lnd/zpay32"
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)
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// A compile time assertion to ensure SessionSource meets the
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// PaymentSessionSource interface.
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var _ PaymentSessionSource = (*SessionSource)(nil)
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// SessionSource defines a source for the router to retrieve new payment
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// sessions.
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type SessionSource struct {
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        // GraphSessionFactory can be used to gain access to a Graph session.
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        // If the backing DB allows it, this will mean that a read transaction
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        // is being held during the use of the session.
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        GraphSessionFactory GraphSessionFactory
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        // SourceNode is the graph's source node.
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        SourceNode *models.LightningNode
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        // GetLink is a method that allows querying the lower link layer
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        // to determine the up to date available bandwidth at a prospective link
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        // to be traversed. If the link isn't available, then a value of zero
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        // should be returned. Otherwise, the current up to date knowledge of
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        // the available bandwidth of the link should be returned.
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        GetLink getLinkQuery
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        // MissionControl is a shared memory of sorts that executions of payment
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        // path finding use in order to remember which vertexes/edges were
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        // pruned from prior attempts. During payment execution, errors sent by
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        // nodes are mapped into a vertex or edge to be pruned. Each run will
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        // then take into account this set of pruned vertexes/edges to reduce
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        // route failure and pass on graph information gained to the next
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        // execution.
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        MissionControl MissionControlQuerier
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        // PathFindingConfig defines global parameters that control the
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        // trade-off in path finding between fees and probability.
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        PathFindingConfig PathFindingConfig
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}
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// NewPaymentSession creates a new payment session backed by the latest prune
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// view from Mission Control. An optional set of routing hints can be provided
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// in order to populate additional edges to explore when finding a path to the
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// payment's destination.
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func (m *SessionSource) NewPaymentSession(p *LightningPayment,
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        firstHopBlob fn.Option[tlv.Blob],
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        trafficShaper fn.Option[htlcswitch.AuxTrafficShaper]) (PaymentSession,
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        error) {
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        getBandwidthHints := func(graph Graph) (bandwidthHints, error) {
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                return newBandwidthManager(
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                        graph, m.SourceNode.PubKeyBytes, m.GetLink,
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                        firstHopBlob, trafficShaper,
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                )
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        }
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        session, err := newPaymentSession(
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                p, m.SourceNode.PubKeyBytes, getBandwidthHints,
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                m.GraphSessionFactory, m.MissionControl, m.PathFindingConfig,
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        )
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        if err != nil {
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                return nil, err
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        }
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        return session, nil
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}
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// NewPaymentSessionEmpty creates a new paymentSession instance that is empty,
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// and will be exhausted immediately. Used for failure reporting to
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// missioncontrol for resumed payment we don't want to make more attempts for.
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func (m *SessionSource) NewPaymentSessionEmpty() PaymentSession {
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        return &paymentSession{
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                empty: true,
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        }
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}
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// RouteHintsToEdges converts a list of invoice route hints to an edge map that
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// can be passed into pathfinding.
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func RouteHintsToEdges(routeHints [][]zpay32.HopHint, target route.Vertex) (
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        map[route.Vertex][]AdditionalEdge, error) {
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        edges := make(map[route.Vertex][]AdditionalEdge)
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        // Traverse through all of the available hop hints and include them in
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        // our edges map, indexed by the public key of the channel's starting
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        // node.
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        for _, routeHint := range routeHints {
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                // If multiple hop hints are provided within a single route
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                // hint, we'll assume they must be chained together and sorted
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                // in forward order in order to reach the target successfully.
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                for i, hopHint := range routeHint {
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                        // In order to determine the end node of this hint,
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                        // we'll need to look at the next hint's start node. If
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                        // we've reached the end of the hints list, we can
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                        // assume we've reached the destination.
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                        endNode := &models.LightningNode{}
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                        if i != len(routeHint)-1 {
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                                endNode.AddPubKey(routeHint[i+1].NodeID)
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                        } else {
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                                targetPubKey, err := btcec.ParsePubKey(
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                                        target[:],
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                                )
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                                if err != nil {
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                                        return nil, err
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                                }
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                                endNode.AddPubKey(targetPubKey)
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                        }
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                        // Finally, create the channel edge from the hop hint
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                        // and add it to list of edges corresponding to the node
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                        // at the start of the channel.
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                        edgePolicy := &models.CachedEdgePolicy{
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                                ToNodePubKey: func() route.Vertex {
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                                        return endNode.PubKeyBytes
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                                },
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                                ToNodeFeatures: lnwire.EmptyFeatureVector(),
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                                ChannelID:      hopHint.ChannelID,
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                                FeeBaseMSat: lnwire.MilliSatoshi(
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                                        hopHint.FeeBaseMSat,
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                                ),
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                                FeeProportionalMillionths: lnwire.MilliSatoshi(
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                                        hopHint.FeeProportionalMillionths,
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                                ),
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                                TimeLockDelta: hopHint.CLTVExpiryDelta,
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                        }
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                        edge := &PrivateEdge{
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                                policy: edgePolicy,
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                        }
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                        v := route.NewVertex(hopHint.NodeID)
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                        edges[v] = append(edges[v], edge)
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                }
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        }
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        return edges, nil
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}
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