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lightningnetwork / lnd / 12986279612

27 Jan 2025 09:51AM UTC coverage: 57.652% (-1.1%) from 58.788%
12986279612

Pull #9447

github

yyforyongyu
sweep: rename methods for clarity

We now rename "third party" to "unknown" as the inputs can be spent via
an older sweeping tx, a third party (anchor), or a remote party (pin).
In fee bumper we don't have the info to distinguish the above cases, and
leave them to be further handled by the sweeper as it has more context.
Pull Request #9447: sweep: start tracking input spending status in the fee bumper

83 of 87 new or added lines in 2 files covered. (95.4%)

19578 existing lines in 256 files now uncovered.

103448 of 179434 relevant lines covered (57.65%)

24884.58 hits per line

Source File
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81.48
/chanacceptor/chainedacceptor.go
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package chanacceptor
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import (
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        "sync"
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        "sync/atomic"
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)
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// ChainedAcceptor represents a conjunction of ChannelAcceptor results.
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type ChainedAcceptor struct {
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        acceptorID uint64 // To be used atomically.
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        // acceptors is a map of ChannelAcceptors that will be evaluated when
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        // the ChainedAcceptor's Accept method is called.
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        acceptors    map[uint64]ChannelAcceptor
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        acceptorsMtx sync.RWMutex
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}
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// NewChainedAcceptor initializes a ChainedAcceptor.
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func NewChainedAcceptor() *ChainedAcceptor {
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        return &ChainedAcceptor{
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                acceptors: make(map[uint64]ChannelAcceptor),
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        }
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}
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// AddAcceptor adds a ChannelAcceptor to this ChainedAcceptor.
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//
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// NOTE: Part of the MultiplexAcceptor interface.
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func (c *ChainedAcceptor) AddAcceptor(acceptor ChannelAcceptor) uint64 {
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        id := atomic.AddUint64(&c.acceptorID, 1)
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        c.acceptorsMtx.Lock()
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        c.acceptors[id] = acceptor
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        c.acceptorsMtx.Unlock()
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        // Return the id so that a caller can call RemoveAcceptor.
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        return id
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}
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// RemoveAcceptor removes a ChannelAcceptor from this ChainedAcceptor given
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// an ID.
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//
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// NOTE: Part of the MultiplexAcceptor interface.
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func (c *ChainedAcceptor) RemoveAcceptor(id uint64) {
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        c.acceptorsMtx.Lock()
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        delete(c.acceptors, id)
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        c.acceptorsMtx.Unlock()
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}
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// numAcceptors returns the number of acceptors contained in the
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// ChainedAcceptor.
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func (c *ChainedAcceptor) numAcceptors() int {
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        c.acceptorsMtx.RLock()
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        defer c.acceptorsMtx.RUnlock()
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        return len(c.acceptors)
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}
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// Accept evaluates the results of all ChannelAcceptors in the acceptors map
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// and returns the conjunction of all these predicates.
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//
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// NOTE: Part of the ChannelAcceptor interface.
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func (c *ChainedAcceptor) Accept(req *ChannelAcceptRequest) *ChannelAcceptResponse {
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        c.acceptorsMtx.RLock()
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        defer c.acceptorsMtx.RUnlock()
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        var finalResp ChannelAcceptResponse
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        for _, acceptor := range c.acceptors {
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                // Call our acceptor to determine whether we want to accept this
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                // channel.
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                acceptorResponse := acceptor.Accept(req)
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                // If we should reject the channel, we can just exit early. This
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                // has the effect of returning the error belonging to our first
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                // failed acceptor.
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                if acceptorResponse.RejectChannel() {
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                        return acceptorResponse
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                }
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                // If we have accepted the channel, we need to set the other
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                // fields that were set in the response. However, since we are
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                // dealing with multiple responses, we need to make sure that we
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                // have not received inconsistent values (eg a csv delay of 1
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                // from one acceptor, and a delay of 120 from another). We
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                // set each value on our final response if it has not been set
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                // yet, and allow duplicate sets if the value is the same. If
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                // we cannot set a field, we return an error response.
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                var err error
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                finalResp, err = mergeResponse(finalResp, *acceptorResponse)
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                if err != nil {
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                        log.Errorf("response for: %x has inconsistent values: %v",
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                                req.OpenChanMsg.PendingChannelID, err)
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                        return NewChannelAcceptResponse(
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                                false, errChannelRejected, nil, 0, 0,
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                                0, 0, 0, 0, false,
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                        )
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                }
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        }
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        // If we have gone through all of our acceptors with no objections, we
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        // can return an acceptor with a nil error.
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        return &finalResp
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}
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// A compile-time constraint to ensure ChainedAcceptor implements the
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// MultiplexAcceptor interface.
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var _ MultiplexAcceptor = (*ChainedAcceptor)(nil)
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