lotus/chain/events/utils.go
2020-10-30 14:00:32 +01:00

45 lines
1.2 KiB
Go

package events
import (
"context"
"golang.org/x/xerrors"
"github.com/filecoin-project/lotus/chain/types"
)
func (me *messageEvents) CheckMsg(ctx context.Context, smsg types.ChainMsg, hnd MsgHandler) CheckFunc {
msg := smsg.VMMessage()
return func(ts *types.TipSet) (done bool, more bool, err error) {
fa, err := me.cs.StateGetActor(ctx, msg.From, ts.Key())
if err != nil {
return false, true, err
}
// >= because actor nonce is actually the next nonce that is expected to appear on chain
if msg.Nonce >= fa.Nonce {
return false, true, nil
}
rec, err := me.cs.StateGetReceipt(ctx, smsg.VMMessage().Cid(), ts.Key())
if err != nil {
return false, true, xerrors.Errorf("getting receipt in CheckMsg: %w", err)
}
more, err = hnd(msg, rec, ts, ts.Height())
return true, more, err
}
}
func (me *messageEvents) MatchMsg(inmsg *types.Message) MsgMatchFunc {
return func(msg *types.Message) (matched bool, err error) {
if msg.From == inmsg.From && msg.Nonce == inmsg.Nonce && !inmsg.Equals(msg) {
return false, xerrors.Errorf("matching msg %s from %s, nonce %d: got duplicate origin/nonce msg %d", inmsg.Cid(), inmsg.From, inmsg.Nonce, msg.Nonce)
}
return inmsg.Equals(msg), nil
}
}