lotus/chain/vm/mkactor.go
2020-03-18 16:43:58 -07:00

85 lines
2.2 KiB
Go

package vm
import (
"context"
"github.com/filecoin-project/specs-actors/actors/builtin"
"github.com/filecoin-project/specs-actors/actors/builtin/account"
"github.com/ipfs/go-cid"
cbor "github.com/ipfs/go-ipld-cbor"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/chain/actors/aerrors"
"github.com/filecoin-project/lotus/chain/state"
"github.com/filecoin-project/lotus/chain/types"
)
func init() {
cst := cbor.NewMemCborStore()
emptyobject, err := cst.Put(context.TODO(), []struct{}{})
if err != nil {
panic(err)
}
EmptyObjectCid = emptyobject
}
var EmptyObjectCid cid.Cid
// Creates account actors from only BLS/SECP256K1 addresses.
func TryCreateAccountActor(st *state.StateTree, addr address.Address) (*types.Actor, aerrors.ActorError) {
act, err := makeActor(st, addr)
if err != nil {
return nil, err
}
if _, err := st.RegisterNewAddress(addr, act); err != nil {
return nil, aerrors.Escalate(err, "registering actor address")
}
return act, nil
}
func makeActor(st *state.StateTree, addr address.Address) (*types.Actor, aerrors.ActorError) {
switch addr.Protocol() {
case address.BLS:
return NewBLSAccountActor(st, addr)
case address.SECP256K1:
return NewSecp256k1AccountActor(st, addr)
case address.ID:
return nil, aerrors.Newf(1, "no actor with given ID: %s", addr)
case address.Actor:
return nil, aerrors.Newf(1, "no such actor: %s", addr)
default:
return nil, aerrors.Newf(1, "address has unsupported protocol: %d", addr.Protocol())
}
}
func NewBLSAccountActor(st *state.StateTree, addr address.Address) (*types.Actor, aerrors.ActorError) {
var acstate account.State
acstate.Address = addr
c, err := st.Store.Put(context.TODO(), &acstate)
if err != nil {
return nil, aerrors.Escalate(err, "serializing account actor state")
}
nact := &types.Actor{
Code: builtin.AccountActorCodeID,
Balance: types.NewInt(0),
Head: c,
}
return nact, nil
}
func NewSecp256k1AccountActor(st *state.StateTree, addr address.Address) (*types.Actor, aerrors.ActorError) {
nact := &types.Actor{
Code: builtin.AccountActorCodeID,
Balance: types.NewInt(0),
Head: EmptyObjectCid,
}
return nact, nil
}