157 lines
4.3 KiB
Go
157 lines
4.3 KiB
Go
package paych
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import (
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"encoding/base64"
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"fmt"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/go-state-types/abi"
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big "github.com/filecoin-project/go-state-types/big"
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"github.com/filecoin-project/go-state-types/cbor"
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"github.com/ipfs/go-cid"
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ipldcbor "github.com/ipfs/go-ipld-cbor"
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paych0 "github.com/filecoin-project/specs-actors/actors/builtin/paych"
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builtin0 "github.com/filecoin-project/specs-actors/actors/builtin"
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builtin2 "github.com/filecoin-project/specs-actors/v2/actors/builtin"
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builtin3 "github.com/filecoin-project/specs-actors/v3/actors/builtin"
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builtin4 "github.com/filecoin-project/specs-actors/v4/actors/builtin"
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builtin5 "github.com/filecoin-project/specs-actors/v5/actors/builtin"
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"github.com/filecoin-project/lotus/chain/actors"
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"github.com/filecoin-project/lotus/chain/actors/adt"
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"github.com/filecoin-project/lotus/chain/actors/builtin"
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"github.com/filecoin-project/lotus/chain/types"
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)
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func init() {
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builtin.RegisterActorState(builtin0.PaymentChannelActorCodeID, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
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return load0(store, root)
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})
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builtin.RegisterActorState(builtin2.PaymentChannelActorCodeID, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
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return load2(store, root)
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})
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builtin.RegisterActorState(builtin3.PaymentChannelActorCodeID, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
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return load3(store, root)
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})
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builtin.RegisterActorState(builtin4.PaymentChannelActorCodeID, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
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return load4(store, root)
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})
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builtin.RegisterActorState(builtin5.PaymentChannelActorCodeID, func(store adt.Store, root cid.Cid) (cbor.Marshaler, error) {
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return load5(store, root)
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})
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}
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// Load returns an abstract copy of payment channel state, irregardless of actor version
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func Load(store adt.Store, act *types.Actor) (State, error) {
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switch act.Code {
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case builtin0.PaymentChannelActorCodeID:
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return load0(store, act.Head)
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case builtin2.PaymentChannelActorCodeID:
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return load2(store, act.Head)
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case builtin3.PaymentChannelActorCodeID:
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return load3(store, act.Head)
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case builtin4.PaymentChannelActorCodeID:
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return load4(store, act.Head)
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case builtin5.PaymentChannelActorCodeID:
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return load5(store, act.Head)
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}
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return nil, xerrors.Errorf("unknown actor code %s", act.Code)
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}
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// State is an abstract version of payment channel state that works across
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// versions
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type State interface {
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cbor.Marshaler
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// Channel owner, who has funded the actor
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From() (address.Address, error)
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// Recipient of payouts from channel
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To() (address.Address, error)
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// Height at which the channel can be `Collected`
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SettlingAt() (abi.ChainEpoch, error)
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// Amount successfully redeemed through the payment channel, paid out on `Collect()`
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ToSend() (abi.TokenAmount, error)
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// Get total number of lanes
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LaneCount() (uint64, error)
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// Iterate lane states
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ForEachLaneState(cb func(idx uint64, dl LaneState) error) error
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}
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// LaneState is an abstract copy of the state of a single lane
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type LaneState interface {
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Redeemed() (big.Int, error)
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Nonce() (uint64, error)
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}
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type SignedVoucher = paych0.SignedVoucher
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type ModVerifyParams = paych0.ModVerifyParams
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// DecodeSignedVoucher decodes base64 encoded signed voucher.
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func DecodeSignedVoucher(s string) (*SignedVoucher, error) {
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data, err := base64.RawURLEncoding.DecodeString(s)
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if err != nil {
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return nil, err
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}
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var sv SignedVoucher
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if err := ipldcbor.DecodeInto(data, &sv); err != nil {
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return nil, err
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}
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return &sv, nil
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}
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var Methods = builtin5.MethodsPaych
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func Message(version actors.Version, from address.Address) MessageBuilder {
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switch version {
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case actors.Version0:
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return message0{from}
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case actors.Version2:
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return message2{from}
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case actors.Version3:
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return message3{from}
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case actors.Version4:
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return message4{from}
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case actors.Version5:
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return message5{from}
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default:
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panic(fmt.Sprintf("unsupported actors version: %d", version))
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}
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}
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type MessageBuilder interface {
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Create(to address.Address, initialAmount abi.TokenAmount) (*types.Message, error)
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Update(paych address.Address, voucher *SignedVoucher, secret []byte) (*types.Message, error)
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Settle(paych address.Address) (*types.Message, error)
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Collect(paych address.Address) (*types.Message, error)
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}
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