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mine.go
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mine.go
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package filcns
import (
"context"
"github.com/ipfs/go-cid"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-state-types/crypto"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/consensus"
"github.com/filecoin-project/lotus/chain/stmgr"
"github.com/filecoin-project/lotus/chain/types"
)
func (filec *FilecoinEC) CreateBlock(ctx context.Context, w api.Wallet, bt *api.BlockTemplate) (*types.FullBlock, error) {
pts, err := filec.sm.ChainStore().LoadTipSet(ctx, bt.Parents)
if err != nil {
return nil, xerrors.Errorf("failed to load parent tipset: %w", err)
}
st, recpts, err := filec.sm.TipSetState(ctx, pts)
if err != nil {
return nil, xerrors.Errorf("failed to load tipset state: %w", err)
}
_, lbst, err := stmgr.GetLookbackTipSetForRound(ctx, filec.sm, pts, bt.Epoch)
if err != nil {
return nil, xerrors.Errorf("getting lookback miner actor state: %w", err)
}
worker, err := stmgr.GetMinerWorkerRaw(ctx, filec.sm, lbst, bt.Miner)
if err != nil {
return nil, xerrors.Errorf("failed to get miner worker: %w", err)
}
next := &types.BlockHeader{
Miner: bt.Miner,
Parents: bt.Parents.Cids(),
Ticket: bt.Ticket,
ElectionProof: bt.Eproof,
BeaconEntries: bt.BeaconValues,
Height: bt.Epoch,
Timestamp: bt.Timestamp,
WinPoStProof: bt.WinningPoStProof,
ParentStateRoot: st,
ParentMessageReceipts: recpts,
}
var blsMessages []*types.Message
var secpkMessages []*types.SignedMessage
var blsMsgCids, secpkMsgCids []cid.Cid
var blsSigs []crypto.Signature
for _, msg := range bt.Messages {
if msg.Signature.Type == crypto.SigTypeBLS {
blsSigs = append(blsSigs, msg.Signature)
blsMessages = append(blsMessages, &msg.Message)
c, err := filec.sm.ChainStore().PutMessage(ctx, &msg.Message)
if err != nil {
return nil, err
}
blsMsgCids = append(blsMsgCids, c)
} else if msg.Signature.Type == crypto.SigTypeSecp256k1 {
c, err := filec.sm.ChainStore().PutMessage(ctx, msg)
if err != nil {
return nil, err
}
secpkMsgCids = append(secpkMsgCids, c)
secpkMessages = append(secpkMessages, msg)
} else {
return nil, xerrors.Errorf("unknown sig type: %d", msg.Signature.Type)
}
}
store := filec.sm.ChainStore().ActorStore(ctx)
blsmsgroot, err := consensus.ToMessagesArray(store, blsMsgCids)
if err != nil {
return nil, xerrors.Errorf("building bls amt: %w", err)
}
secpkmsgroot, err := consensus.ToMessagesArray(store, secpkMsgCids)
if err != nil {
return nil, xerrors.Errorf("building secpk amt: %w", err)
}
mmcid, err := store.Put(store.Context(), &types.MsgMeta{
BlsMessages: blsmsgroot,
SecpkMessages: secpkmsgroot,
})
if err != nil {
return nil, err
}
next.Messages = mmcid
aggSig, err := consensus.AggregateSignatures(blsSigs)
if err != nil {
return nil, err
}
next.BLSAggregate = aggSig
pweight, err := filec.sm.ChainStore().Weight(ctx, pts)
if err != nil {
return nil, err
}
next.ParentWeight = pweight
baseFee, err := filec.sm.ChainStore().ComputeBaseFee(ctx, pts)
if err != nil {
return nil, xerrors.Errorf("computing base fee: %w", err)
}
next.ParentBaseFee = baseFee
nosigbytes, err := next.SigningBytes()
if err != nil {
return nil, xerrors.Errorf("failed to get signing bytes for block: %w", err)
}
sig, err := w.WalletSign(ctx, worker, nosigbytes, api.MsgMeta{
Type: api.MTBlock,
})
if err != nil {
return nil, xerrors.Errorf("failed to sign new block: %w", err)
}
next.BlockSig = sig
fullBlock := &types.FullBlock{
Header: next,
BlsMessages: blsMessages,
SecpkMessages: secpkMessages,
}
return fullBlock, nil
}