116 lines
4.4 KiB
Go
116 lines
4.4 KiB
Go
package retrievaladapter
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import (
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"context"
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"github.com/filecoin-project/specs-actors/actors/builtin/paych"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/go-fil-markets/retrievalmarket"
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"github.com/filecoin-project/go-fil-markets/shared"
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"github.com/filecoin-project/go-state-types/abi"
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"github.com/ipfs/go-cid"
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"github.com/multiformats/go-multiaddr"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/lotus/node/impl/full"
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payapi "github.com/filecoin-project/lotus/node/impl/paych"
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)
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type retrievalClientNode struct {
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chainAPI full.ChainAPI
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payAPI payapi.PaychAPI
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stateAPI full.StateAPI
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}
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// NewRetrievalClientNode returns a new node adapter for a retrieval client that talks to the
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// Lotus Node
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func NewRetrievalClientNode(payAPI payapi.PaychAPI, chainAPI full.ChainAPI, stateAPI full.StateAPI) retrievalmarket.RetrievalClientNode {
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return &retrievalClientNode{payAPI: payAPI, chainAPI: chainAPI, stateAPI: stateAPI}
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}
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// GetOrCreatePaymentChannel sets up a new payment channel if one does not exist
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// between a client and a miner and ensures the client has the given amount of
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// funds available in the channel.
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func (rcn *retrievalClientNode) GetOrCreatePaymentChannel(ctx context.Context, clientAddress address.Address, minerAddress address.Address, clientFundsAvailable abi.TokenAmount, tok shared.TipSetToken) (address.Address, cid.Cid, error) {
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// TODO: respect the provided TipSetToken (a serialized TipSetKey) when
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// querying the chain
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ci, err := rcn.payAPI.PaychGet(ctx, clientAddress, minerAddress, clientFundsAvailable)
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if err != nil {
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return address.Undef, cid.Undef, err
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}
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return ci.Channel, ci.WaitSentinel, nil
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}
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// Allocate late creates a lane within a payment channel so that calls to
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// CreatePaymentVoucher will automatically make vouchers only for the difference
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// in total
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func (rcn *retrievalClientNode) AllocateLane(ctx context.Context, paymentChannel address.Address) (uint64, error) {
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return rcn.payAPI.PaychAllocateLane(ctx, paymentChannel)
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}
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// CreatePaymentVoucher creates a new payment voucher in the given lane for a
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// given payment channel so that all the payment vouchers in the lane add up
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// to the given amount (so the payment voucher will be for the difference)
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func (rcn *retrievalClientNode) CreatePaymentVoucher(ctx context.Context, paymentChannel address.Address, amount abi.TokenAmount, lane uint64, tok shared.TipSetToken) (*paych.SignedVoucher, error) {
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// TODO: respect the provided TipSetToken (a serialized TipSetKey) when
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// querying the chain
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voucher, err := rcn.payAPI.PaychVoucherCreate(ctx, paymentChannel, amount, lane)
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if err != nil {
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return nil, err
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}
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if voucher.Voucher == nil {
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return nil, retrievalmarket.NewShortfallError(voucher.Shortfall)
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}
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return voucher.Voucher, nil
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}
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func (rcn *retrievalClientNode) GetChainHead(ctx context.Context) (shared.TipSetToken, abi.ChainEpoch, error) {
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head, err := rcn.chainAPI.ChainHead(ctx)
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if err != nil {
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return nil, 0, err
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}
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return head.Key().Bytes(), head.Height(), nil
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}
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func (rcn *retrievalClientNode) WaitForPaymentChannelReady(ctx context.Context, messageCID cid.Cid) (address.Address, error) {
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return rcn.payAPI.PaychGetWaitReady(ctx, messageCID)
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}
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func (rcn *retrievalClientNode) CheckAvailableFunds(ctx context.Context, paymentChannel address.Address) (retrievalmarket.ChannelAvailableFunds, error) {
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channelAvailableFunds, err := rcn.payAPI.PaychAvailableFunds(paymentChannel)
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if err != nil {
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return retrievalmarket.ChannelAvailableFunds{}, err
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}
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return retrievalmarket.ChannelAvailableFunds{
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ConfirmedAmt: channelAvailableFunds.ConfirmedAmt,
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PendingAmt: channelAvailableFunds.PendingAmt,
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PendingWaitSentinel: channelAvailableFunds.PendingWaitSentinel,
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QueuedAmt: channelAvailableFunds.QueuedAmt,
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VoucherReedeemedAmt: channelAvailableFunds.VoucherReedeemedAmt,
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}, nil
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}
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func (rcn *retrievalClientNode) GetKnownAddresses(ctx context.Context, p retrievalmarket.RetrievalPeer, encodedTs shared.TipSetToken) ([]multiaddr.Multiaddr, error) {
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tsk, err := types.TipSetKeyFromBytes(encodedTs)
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if err != nil {
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return nil, err
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}
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mi, err := rcn.stateAPI.StateMinerInfo(ctx, p.Address, tsk)
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if err != nil {
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return nil, err
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}
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multiaddrs := make([]multiaddr.Multiaddr, 0, len(mi.Multiaddrs))
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for _, a := range mi.Multiaddrs {
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maddr, err := multiaddr.NewMultiaddrBytes(a)
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if err != nil {
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return nil, err
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}
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multiaddrs = append(multiaddrs, maddr)
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}
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return multiaddrs, nil
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}
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