lotus/node/impl/client/client.go
2019-09-24 23:13:47 +02:00

272 lines
6.6 KiB
Go

package client
import (
"context"
"errors"
"golang.org/x/xerrors"
"os"
"github.com/ipfs/go-blockservice"
"github.com/ipfs/go-cid"
"github.com/ipfs/go-filestore"
chunker "github.com/ipfs/go-ipfs-chunker"
offline "github.com/ipfs/go-ipfs-exchange-offline"
files "github.com/ipfs/go-ipfs-files"
cbor "github.com/ipfs/go-ipld-cbor"
ipld "github.com/ipfs/go-ipld-format"
"github.com/ipfs/go-merkledag"
"github.com/ipfs/go-unixfs/importer/balanced"
ihelper "github.com/ipfs/go-unixfs/importer/helpers"
"github.com/libp2p/go-libp2p-core/peer"
"go.uber.org/fx"
"github.com/filecoin-project/go-lotus/api"
"github.com/filecoin-project/go-lotus/build"
"github.com/filecoin-project/go-lotus/chain/actors"
"github.com/filecoin-project/go-lotus/chain/address"
"github.com/filecoin-project/go-lotus/chain/deals"
"github.com/filecoin-project/go-lotus/chain/store"
"github.com/filecoin-project/go-lotus/chain/types"
"github.com/filecoin-project/go-lotus/node/impl/full"
"github.com/filecoin-project/go-lotus/node/impl/paych"
"github.com/filecoin-project/go-lotus/node/modules/dtypes"
"github.com/filecoin-project/go-lotus/retrieval"
"github.com/filecoin-project/go-lotus/retrieval/discovery"
)
type API struct {
fx.In
full.ChainAPI
full.StateAPI
full.WalletAPI
paych.PaychAPI
DealClient *deals.Client
RetDiscovery discovery.PeerResolver
Retrieval *retrieval.Client
Chain *store.ChainStore
LocalDAG dtypes.ClientDAG
Blockstore dtypes.ClientBlockstore
Filestore dtypes.ClientFilestore `optional:"true"`
}
func (a *API) ClientStartDeal(ctx context.Context, data cid.Cid, miner address.Address, price types.BigInt, blocksDuration uint64) (*cid.Cid, error) {
// TODO: make this a param
self, err := a.WalletDefaultAddress(ctx)
if err != nil {
return nil, err
}
// get miner peerID
msg := &types.Message{
To: miner,
From: miner,
Method: actors.MAMethods.GetPeerID,
}
r, err := a.StateCall(ctx, msg, nil)
if err != nil {
return nil, err
}
pid, err := peer.IDFromBytes(r.Return)
if err != nil {
return nil, err
}
vd, err := a.DealClient.VerifyParams(ctx, data)
if err != nil {
return nil, err
}
voucherData, err := cbor.DumpObject(vd)
if err != nil {
return nil, err
}
// setup payments
total := types.BigMul(price, types.NewInt(blocksDuration))
// TODO: at least ping the miner before creating paych / locking the money
extra := &types.ModVerifyParams{
Actor: miner,
Method: actors.MAMethods.PaymentVerifyInclusion,
Data: voucherData,
}
head := a.Chain.GetHeaviestTipSet()
vouchers := deals.VoucherSpec(blocksDuration, total, head.Height(), extra)
payment, err := a.PaychNewPayment(ctx, self, miner, vouchers)
if err != nil {
return nil, err
}
proposal := deals.ClientDealProposal{
Data: data,
TotalPrice: total,
Duration: blocksDuration,
Payment: actors.PaymentInfo{
PayChActor: payment.Channel,
Payer: self,
ChannelMessage: payment.ChannelMessage,
Vouchers: payment.Vouchers,
},
MinerAddress: miner,
ClientAddress: self,
MinerID: pid,
}
c, err := a.DealClient.Start(ctx, proposal, vd)
// TODO: send updated voucher with PaymentVerifySector for cheaper validation (validate the sector the miner sent us first!)
return &c, err
}
func (a *API) ClientListDeals(ctx context.Context) ([]api.DealInfo, error) {
deals, err := a.DealClient.List()
if err != nil {
return nil, err
}
out := make([]api.DealInfo, len(deals))
for k, v := range deals {
out[k] = api.DealInfo{
ProposalCid: v.ProposalCid,
State: v.State,
Miner: v.Proposal.MinerAddress,
PieceRef: v.Proposal.PieceRef,
CommP: v.Proposal.CommP,
Size: v.Proposal.Size,
TotalPrice: v.Proposal.TotalPrice,
Duration: v.Proposal.Duration,
}
}
return out, nil
}
func (a *API) ClientHasLocal(ctx context.Context, root cid.Cid) (bool, error) {
// TODO: check if we have the ENTIRE dag
offExch := merkledag.NewDAGService(blockservice.New(a.Blockstore, offline.Exchange(a.Blockstore)))
_, err := offExch.Get(ctx, root)
if err == ipld.ErrNotFound {
return false, nil
}
if err != nil {
return false, err
}
return true, nil
}
func (a *API) ClientFindData(ctx context.Context, root cid.Cid) ([]api.QueryOffer, error) {
peers, err := a.RetDiscovery.GetPeers(root)
if err != nil {
return nil, err
}
out := make([]api.QueryOffer, len(peers))
for k, p := range peers {
out[k] = a.Retrieval.Query(ctx, p, root)
}
return out, nil
}
func (a *API) ClientImport(ctx context.Context, path string) (cid.Cid, error) {
f, err := os.Open(path)
if err != nil {
return cid.Undef, err
}
stat, err := f.Stat()
if err != nil {
return cid.Undef, err
}
file, err := files.NewReaderPathFile(path, f, stat)
if err != nil {
return cid.Undef, err
}
bufferedDS := ipld.NewBufferedDAG(ctx, a.LocalDAG)
params := ihelper.DagBuilderParams{
Maxlinks: build.UnixfsLinksPerLevel,
RawLeaves: true,
CidBuilder: nil,
Dagserv: bufferedDS,
NoCopy: true,
}
db, err := params.New(chunker.NewSizeSplitter(file, int64(build.UnixfsChunkSize)))
if err != nil {
return cid.Undef, err
}
nd, err := balanced.Layout(db)
if err != nil {
return cid.Undef, err
}
return nd.Cid(), bufferedDS.Commit()
}
func (a *API) ClientListImports(ctx context.Context) ([]api.Import, error) {
if a.Filestore == nil {
return nil, errors.New("listing imports is not supported with in-memory dag yet")
}
next, err := filestore.ListAll(a.Filestore, false)
if err != nil {
return nil, err
}
// TODO: make this less very bad by tracking root cids instead of using ListAll
out := make([]api.Import, 0)
for {
r := next()
if r == nil {
return out, nil
}
if r.Offset != 0 {
continue
}
out = append(out, api.Import{
Status: r.Status,
Key: r.Key,
FilePath: r.FilePath,
Size: r.Size,
})
}
}
func (a *API) ClientRetrieve(ctx context.Context, order api.RetrievalOrder, path string) error {
if order.MinerPeerID == "" {
pid, err := a.StateMinerPeerID(ctx, order.Miner, nil)
if err != nil {
return err
}
order.MinerPeerID = pid
}
outFile, err := os.OpenFile(path, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0777)
if err != nil {
return err
}
err = a.Retrieval.RetrieveUnixfs(ctx, order.Root, order.Size, order.Total, order.MinerPeerID, order.Client, order.Miner, outFile)
if err != nil {
_ = outFile.Close()
return xerrors.Errorf("RetrieveUnixfs: %w", err)
}
return outFile.Close()
}
func (a *API) ClientQueryAsk(ctx context.Context, p peer.ID, miner address.Address) (*types.SignedStorageAsk, error) {
return a.DealClient.QueryAsk(ctx, p, miner)
}