161 lines
3.3 KiB
Go
161 lines
3.3 KiB
Go
package deals
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import (
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"bytes"
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"context"
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"time"
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"github.com/filecoin-project/lotus/chain/address"
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"github.com/filecoin-project/lotus/chain/stmgr"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/lotus/lib/cborutil"
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datastore "github.com/ipfs/go-datastore"
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inet "github.com/libp2p/go-libp2p-core/network"
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"golang.org/x/xerrors"
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)
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func (p *Provider) SetPrice(price types.BigInt, ttlsecs int64) error {
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p.askLk.Lock()
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defer p.askLk.Unlock()
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var seqno uint64
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if p.ask != nil {
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seqno = p.ask.Ask.SeqNo + 1
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}
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now := time.Now().Unix()
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ask := &types.StorageAsk{
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Price: price,
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Timestamp: uint64(now),
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Expiry: uint64(now + ttlsecs),
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Miner: p.actor,
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SeqNo: seqno,
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MinPieceSize: p.minPieceSize,
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}
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ssa, err := p.signAsk(ask)
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if err != nil {
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return err
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}
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return p.saveAsk(ssa)
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}
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func (p *Provider) getAsk(m address.Address) *types.SignedStorageAsk {
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p.askLk.Lock()
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defer p.askLk.Unlock()
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if m != p.actor {
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return nil
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}
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return p.ask
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}
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func (p *Provider) HandleAskStream(s inet.Stream) {
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defer s.Close()
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var ar AskRequest
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if err := cborutil.ReadCborRPC(s, &ar); err != nil {
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log.Errorf("failed to read AskRequest from incoming stream: %s", err)
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return
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}
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resp := p.processAskRequest(&ar)
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if err := cborutil.WriteCborRPC(s, resp); err != nil {
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log.Errorf("failed to write ask response: %s", err)
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return
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}
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}
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func (p *Provider) processAskRequest(ar *AskRequest) *AskResponse {
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return &AskResponse{
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Ask: p.getAsk(ar.Miner),
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}
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}
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var bestAskKey = datastore.NewKey("latest-ask")
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func (p *Provider) tryLoadAsk() error {
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p.askLk.Lock()
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defer p.askLk.Unlock()
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err := p.loadAsk()
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if err != nil {
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if xerrors.Is(err, datastore.ErrNotFound) {
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log.Warn("no previous ask found, miner will not accept deals until a price is set")
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return nil
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}
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return err
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}
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return nil
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}
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func (p *Provider) loadAsk() error {
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askb, err := p.ds.Get(datastore.NewKey("latest-ask"))
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if err != nil {
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return xerrors.Errorf("failed to load most recent ask from disk: %w", err)
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}
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var ssa types.SignedStorageAsk
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if err := cborutil.ReadCborRPC(bytes.NewReader(askb), &ssa); err != nil {
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return err
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}
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p.ask = &ssa
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return nil
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}
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func (p *Provider) signAsk(a *types.StorageAsk) (*types.SignedStorageAsk, error) {
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b, err := cborutil.Dump(a)
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if err != nil {
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return nil, err
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}
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worker, err := p.getWorker(p.actor)
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if err != nil {
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return nil, xerrors.Errorf("failed to get worker to sign ask: %w", err)
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}
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sig, err := p.full.WalletSign(context.TODO(), worker, b)
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if err != nil {
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return nil, err
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}
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return &types.SignedStorageAsk{
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Ask: a,
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Signature: sig,
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}, nil
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}
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func (p *Provider) saveAsk(a *types.SignedStorageAsk) error {
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b, err := cborutil.Dump(a)
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if err != nil {
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return err
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}
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if err := p.ds.Put(bestAskKey, b); err != nil {
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return err
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}
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p.ask = a
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return nil
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}
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func (c *Client) checkAskSignature(ask *types.SignedStorageAsk) error {
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tss := c.sm.ChainStore().GetHeaviestTipSet().ParentState()
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w, err := stmgr.GetMinerWorkerRaw(context.TODO(), c.sm, tss, ask.Ask.Miner)
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if err != nil {
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return xerrors.Errorf("failed to get worker for miner in ask", err)
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}
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sigb, err := cborutil.Dump(ask.Ask)
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if err != nil {
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return xerrors.Errorf("failed to re-serialize ask")
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}
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return ask.Signature.Verify(w, sigb)
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}
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