paychmgr

package
v0.0.0-...-484cccf Latest Latest
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 Go to latest Published: Mar 16, 2023 License: Apache-2.0, MIT Imports: 32 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	DirInbound  = 1
	DirOutbound = 2
)

Variables

View Source 
var ErrChannelNotTracked = errors.New("channel not tracked")

Functions

func BestSpendableByLane 

func BestSpendableByLane(ctx context.Context, api BestSpendableAPI, ch address.Address) (map[uint64]*paych.SignedVoucher, error)

Types

type BestSpendableAPI 

type BestSpendableAPI interface {
	PaychVoucherList(context.Context, address.Address) ([]*paych.SignedVoucher, error)
	PaychVoucherCheckSpendable(context.Context, address.Address, *paych.SignedVoucher, []byte, []byte) (bool, error)
}

type ChannelInfo 

type ChannelInfo struct {
	// ChannelID is a uuid set at channel creation
	ChannelID string
	// Channel address - may be nil if the channel hasn't been created yet
	Channel *address.Address
	// Control is the address of the local node
	Control address.Address
	// Target is the address of the remote node (on the other end of the channel)
	Target address.Address
	// Direction indicates if the channel is inbound (Control is the "to" address)
	// or outbound (Control is the "from" address)
	Direction uint64
	// Vouchers is a list of all vouchers sent on the channel
	Vouchers []*VoucherInfo
	// NextLane is the number of the next lane that should be used when the
	// client requests a new lane (eg to create a voucher for a new deal)
	NextLane uint64
	// Amount added to the channel.
	// Note: This amount is only used by GetPaych to keep track of how much
	// has locally been added to the channel. It should reflect the channel's
	// Balance on chain as long as all operations occur on the same datastore.
	Amount types.BigInt
	// AvailableAmount indicates how much afil is non-reserved
	AvailableAmount types.BigInt
	// PendingAvailableAmount is available amount that we're awaiting confirmation of
	PendingAvailableAmount types.BigInt
	// PendingAmount is the amount that we're awaiting confirmation of
	PendingAmount types.BigInt
	// CreateMsg is the CID of a pending create message (while waiting for confirmation)
	CreateMsg *cid.Cid
	// AddFundsMsg is the CID of a pending add funds message (while waiting for confirmation)
	AddFundsMsg *cid.Cid
	// Settling indicates whether the channel has entered into the settling state
	Settling bool
}

ChannelInfo keeps track of information about a channel

func (*ChannelInfo) MarshalCBOR 

func (t *ChannelInfo) MarshalCBOR(w io.Writer) error

func (*ChannelInfo) UnmarshalCBOR 

func (t *ChannelInfo) UnmarshalCBOR(r io.Reader) (err error)

type ErrInsufficientFunds 

type ErrInsufficientFunds struct {
	// contains filtered or unexported fields
}

func (*ErrInsufficientFunds) Error 

func (e *ErrInsufficientFunds) Error() string

func (*ErrInsufficientFunds) Shortfall 

func (e *ErrInsufficientFunds) Shortfall() types.BigInt

type GetOpts 

type GetOpts struct {
	Reserve  bool
	OffChain bool
}

type Manager 

type Manager struct {
	// contains filtered or unexported fields
}

func NewManager 

func NewManager(ctx context.Context, shutdown func(), sm stmgr.StateManagerAPI, pchstore *Store, api PaychAPI) *Manager

func (*Manager) AddVoucherInbound 

func (pm *Manager) AddVoucherInbound(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, proof []byte, minDelta types.BigInt) (types.BigInt, error)

AddVoucherInbound adds a voucher for an inbound channel. If the channel is not in the store, fetches the channel from state (and checks that the channel To address is owned by the wallet).

func (*Manager) AddVoucherOutbound 

func (pm *Manager) AddVoucherOutbound(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, proof []byte, minDelta types.BigInt) (types.BigInt, error)

AddVoucherOutbound adds a voucher for an outbound channel. Returns an error if the channel is not already in the store.

func (*Manager) AllocateLane 

func (pm *Manager) AllocateLane(ctx context.Context, ch address.Address) (uint64, error)

func (*Manager) AvailableFunds 

func (pm *Manager) AvailableFunds(ctx context.Context, ch address.Address) (*api.ChannelAvailableFunds, error)

func (*Manager) AvailableFundsByFromTo 

func (pm *Manager) AvailableFundsByFromTo(ctx context.Context, from address.Address, to address.Address) (*api.ChannelAvailableFunds, error)

func (*Manager) CheckVoucherSpendable 

func (pm *Manager) CheckVoucherSpendable(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, secret []byte, proof []byte) (bool, error)

CheckVoucherSpendable checks if the given voucher is currently spendable

func (*Manager) CheckVoucherValid 

func (pm *Manager) CheckVoucherValid(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher) error

CheckVoucherValid checks if the given voucher is valid (is or could become spendable at some point). If the channel is not in the store, fetches the channel from state (and checks that the channel To address is owned by the wallet).

func (*Manager) Collect 

func (pm *Manager) Collect(ctx context.Context, addr address.Address) (cid.Cid, error)

func (*Manager) CreateVoucher 

func (pm *Manager) CreateVoucher(ctx context.Context, ch address.Address, voucher paychtypes.SignedVoucher) (*api.VoucherCreateResult, error)

func (*Manager) GetChannelInfo 

func (pm *Manager) GetChannelInfo(ctx context.Context, addr address.Address) (*ChannelInfo, error)

func (*Manager) GetPaych 

func (pm *Manager) GetPaych(ctx context.Context, from, to address.Address, amt types.BigInt, opts GetOpts) (address.Address, cid.Cid, error)

func (*Manager) GetPaychWaitReady 

func (pm *Manager) GetPaychWaitReady(ctx context.Context, mcid cid.Cid) (address.Address, error)

GetPaychWaitReady waits until the create channel / add funds message with the given message CID arrives. The returned channel address can safely be used against the Manager methods.

func (*Manager) ListChannels 

func (pm *Manager) ListChannels(ctx context.Context) ([]address.Address, error)

func (*Manager) ListVouchers 

func (pm *Manager) ListVouchers(ctx context.Context, ch address.Address) ([]*VoucherInfo, error)

func (*Manager) Settle 

func (pm *Manager) Settle(ctx context.Context, addr address.Address) (cid.Cid, error)

func (*Manager) Start 

func (pm *Manager) Start() error

Start restarts tracking of any messages that were sent to chain.

func (*Manager) Stop 

func (pm *Manager) Stop() error

Stop shuts down any processes used by the manager

func (*Manager) SubmitVoucher 

func (pm *Manager) SubmitVoucher(ctx context.Context, ch address.Address, sv *paychtypes.SignedVoucher, secret []byte, proof []byte) (cid.Cid, error)

TODO: secret vs proof doesn't make sense, there is only one, not two

type MsgInfo 

type MsgInfo struct {
	// ChannelID links the message to a channel
	ChannelID string
	// MsgCid is the CID of the message
	MsgCid cid.Cid
	// Received indicates whether a response has been received
	Received bool
	// Err is the error received in the response
	Err string
}

MsgInfo stores information about a create channel / add funds message that has been sent

func (*MsgInfo) MarshalCBOR 

func (t *MsgInfo) MarshalCBOR(w io.Writer) error

func (*MsgInfo) UnmarshalCBOR 

func (t *MsgInfo) UnmarshalCBOR(r io.Reader) (err error)

type PaychAPI 

type PaychAPI interface {
	StateAccountKey(context.Context, address.Address, types.TipSetKey) (address.Address, error)
	StateWaitMsg(ctx context.Context, cid cid.Cid, confidence uint64, limit abi.ChainEpoch, allowReplaced bool) (*api.MsgLookup, error)
	MpoolPushMessage(ctx context.Context, msg *types.Message, maxFee *api.MessageSendSpec) (*types.SignedMessage, error)
	WalletHas(ctx context.Context, addr address.Address) (bool, error)
	WalletSign(ctx context.Context, k address.Address, msg []byte) (*crypto.Signature, error)
	StateNetworkVersion(context.Context, types.TipSetKey) (network.Version, error)
}

paychAPI defines the API methods needed by the payment channel manager

type Store 

type Store struct {
	// contains filtered or unexported fields
}

func NewStore 

func NewStore(ds datastore.Batching) *Store

func (*Store) AllocateLane 

func (ps *Store) AllocateLane(ctx context.Context, ch address.Address) (uint64, error)

AllocateLane allocates a new lane for the given channel

func (*Store) ByAddress 

func (ps *Store) ByAddress(ctx context.Context, addr address.Address) (*ChannelInfo, error)

ByAddress gets the channel that matches the given address

func (*Store) ByChannelID 

func (ps *Store) ByChannelID(ctx context.Context, channelID string) (*ChannelInfo, error)

ByChannelID gets channel info by channel ID

func (*Store) ByMessageCid 

func (ps *Store) ByMessageCid(ctx context.Context, mcid cid.Cid) (*ChannelInfo, error)

ByMessageCid gets the channel associated with a message

func (*Store) CreateChannel 

func (ps *Store) CreateChannel(ctx context.Context, from address.Address, to address.Address, createMsgCid cid.Cid, amt, avail types.BigInt) (*ChannelInfo, error)

CreateChannel creates an outbound channel for the given from / to

func (*Store) GetMessage 

func (ps *Store) GetMessage(ctx context.Context, mcid cid.Cid) (*MsgInfo, error)

GetMessage gets the message info for a given message CID

func (*Store) ListChannels 

func (ps *Store) ListChannels(ctx context.Context) ([]address.Address, error)

ListChannels returns the addresses of all channels that have been created

func (*Store) MarkVoucherSubmitted 

func (ps *Store) MarkVoucherSubmitted(ctx context.Context, ci *ChannelInfo, sv *paych.SignedVoucher) error

func (*Store) OutboundActiveByFromTo 

func (ps *Store) OutboundActiveByFromTo(ctx context.Context, sma stateManagerAPI, from address.Address, to address.Address) (*ChannelInfo, error)

OutboundActiveByFromTo looks for outbound channels that have not been settled, with the given from / to addresses

func (*Store) RemoveChannel 

func (ps *Store) RemoveChannel(ctx context.Context, channelID string) error

RemoveChannel removes the channel with the given channel ID

func (*Store) SaveMessageResult 

func (ps *Store) SaveMessageResult(ctx context.Context, mcid cid.Cid, msgErr error) error

SaveMessageResult is called when the result of a message is received

func (*Store) SaveNewMessage 

func (ps *Store) SaveNewMessage(ctx context.Context, channelID string, mcid cid.Cid) error

SaveNewMessage is called when a message is sent

func (*Store) TrackChannel 

func (ps *Store) TrackChannel(ctx context.Context, ci *ChannelInfo) (*ChannelInfo, error)

TrackChannel stores a channel, returning an error if the channel was already being tracked

func (*Store) VouchersForPaych 

func (ps *Store) VouchersForPaych(ctx context.Context, ch address.Address) ([]*VoucherInfo, error)

VouchersForPaych gets the vouchers for the given channel

func (*Store) WithPendingAddFunds 

func (ps *Store) WithPendingAddFunds(ctx context.Context) ([]ChannelInfo, error)

WithPendingAddFunds is used on startup to find channels for which a create channel or add funds message has been sent, but lotus shut down before the response was received.

type VoucherInfo 

type VoucherInfo struct {
	Voucher   *paych.SignedVoucher
	Proof     []byte // ignored
	Submitted bool
}

func (*VoucherInfo) MarshalCBOR 

func (t *VoucherInfo) MarshalCBOR(w io.Writer) error

func (*VoucherInfo) UnmarshalCBOR 

func (t *VoucherInfo) UnmarshalCBOR(r io.Reader) (err error)

Source Files

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