lotus/chain/actors/builtin/paych/state.go.template
2022-01-12 18:52:07 -05:00

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package paych
import (
"github.com/ipfs/go-cid"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/go-state-types/abi"
"github.com/filecoin-project/go-state-types/big"
"github.com/filecoin-project/lotus/chain/actors/adt"
paych{{.v}} "github.com/filecoin-project/specs-actors{{.import}}actors/builtin/paych"
adt{{.v}} "github.com/filecoin-project/specs-actors{{.import}}actors/util/adt"
)
var _ State = (*state{{.v}})(nil)
func load{{.v}}(store adt.Store, root cid.Cid) (State, error) {
out := state{{.v}}{store: store}
err := store.Get(store.Context(), root, &out)
if err != nil {
return nil, err
}
return &out, nil
}
func make{{.v}}(store adt.Store) (State, error) {
out := state{{.v}}{store: store}
out.State = paych{{.v}}.State{}
return &out, nil
}
type state{{.v}} struct {
paych{{.v}}.State
store adt.Store
lsAmt *adt{{.v}}.Array
}
// Channel owner, who has funded the actor
func (s *state{{.v}}) From() (address.Address, error) {
return s.State.From, nil
}
// Recipient of payouts from channel
func (s *state{{.v}}) To() (address.Address, error) {
return s.State.To, nil
}
// Height at which the channel can be `Collected`
func (s *state{{.v}}) SettlingAt() (abi.ChainEpoch, error) {
return s.State.SettlingAt, nil
}
// Amount successfully redeemed through the payment channel, paid out on `Collect()`
func (s *state{{.v}}) ToSend() (abi.TokenAmount, error) {
return s.State.ToSend, nil
}
func (s *state{{.v}}) getOrLoadLsAmt() (*adt{{.v}}.Array, error) {
if s.lsAmt != nil {
return s.lsAmt, nil
}
// Get the lane state from the chain
lsamt, err := adt{{.v}}.AsArray(s.store, s.State.LaneStates{{if (ge .v 3)}}, paych{{.v}}.LaneStatesAmtBitwidth{{end}})
if err != nil {
return nil, err
}
s.lsAmt = lsamt
return lsamt, nil
}
// Get total number of lanes
func (s *state{{.v}}) LaneCount() (uint64, error) {
lsamt, err := s.getOrLoadLsAmt()
if err != nil {
return 0, err
}
return lsamt.Length(), nil
}
func (s *state{{.v}}) GetState() interface{} {
return &s.State
}
// Iterate lane states
func (s *state{{.v}}) ForEachLaneState(cb func(idx uint64, dl LaneState) error) error {
// Get the lane state from the chain
lsamt, err := s.getOrLoadLsAmt()
if err != nil {
return err
}
// Note: we use a map instead of an array to store laneStates because the
// client sets the lane ID (the index) and potentially they could use a
// very large index.
var ls paych{{.v}}.LaneState
return lsamt.ForEach(&ls, func(i int64) error {
return cb(uint64(i), &laneState{{.v}}{ls})
})
}
type laneState{{.v}} struct {
paych{{.v}}.LaneState
}
func (ls *laneState{{.v}}) Redeemed() (big.Int, error) {
return ls.LaneState.Redeemed, nil
}
func (ls *laneState{{.v}}) Nonce() (uint64, error) {
return ls.LaneState.Nonce, nil
}
{{if (ge .v 7)}}
func toV{{.v}}SignedVoucher(sv SignedVoucher) paych{{.v}}.SignedVoucher {
return paych{{.v}}.SignedVoucher{
ChannelAddr: sv.ChannelAddr,
TimeLockMin: sv.TimeLockMin,
TimeLockMax: sv.TimeLockMax,
SecretHash: sv.SecretPreimage,
Extra: sv.Extra,
Lane: sv.Lane,
Nonce: sv.Nonce,
Amount: sv.Amount,
MinSettleHeight: sv.MinSettleHeight,
Merges: sv.Merges,
Signature: sv.Signature,
}
}
{{end}}