82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
package paychmgr
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import (
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"context"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/specs-actors/actors/builtin/paych"
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xerrors "golang.org/x/xerrors"
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"github.com/filecoin-project/lotus/chain/actors"
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"github.com/filecoin-project/lotus/chain/types"
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)
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func (pm *Manager) loadPaychState(ctx context.Context, ch address.Address) (*types.Actor, *actors.PaymentChannelActorState, error) {
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var pcast actors.PaymentChannelActorState
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act, err := pm.sm.LoadActorState(ctx, ch, &pcast, nil)
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if err != nil {
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return nil, nil, err
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}
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return act, &pcast, nil
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}
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func findLane(states []*paych.LaneState, lane uint64) *paych.LaneState {
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var ls *paych.LaneState
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for _, laneState := range states {
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if uint64(laneState.ID) == lane {
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ls = laneState
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break
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}
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}
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return ls
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}
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func (pm *Manager) laneState(ctx context.Context, ch address.Address, lane uint64) (paych.LaneState, error) {
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_, state, err := pm.loadPaychState(ctx, ch)
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if err != nil {
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return paych.LaneState{}, err
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}
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// TODO: we probably want to call UpdateChannelState with all vouchers to be fully correct
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// (but technically dont't need to)
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// TODO: make sure this is correct
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ls := findLane(state.LaneStates, lane)
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if ls == nil {
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ls = &paych.LaneState{
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ID: lane,
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Redeemed: types.NewInt(0),
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Nonce: 0,
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}
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}
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vouchers, err := pm.store.VouchersForPaych(ch)
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if err != nil {
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if err == ErrChannelNotTracked {
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return *ls, nil
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}
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return paych.LaneState{}, err
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}
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for _, v := range vouchers {
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for range v.Voucher.Merges {
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return paych.LaneState{}, xerrors.Errorf("paych merges not handled yet")
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}
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if v.Voucher.Lane != lane {
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continue
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}
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if v.Voucher.Nonce < ls.Nonce {
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log.Warnf("Found outdated voucher: ch=%s, lane=%d, v.nonce=%d lane.nonce=%d", ch, lane, v.Voucher.Nonce, ls.Nonce)
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continue
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}
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ls.Nonce = v.Voucher.Nonce
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ls.Redeemed = v.Voucher.Amount
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}
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return *ls, nil
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}
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