lotus/chain/vm/mkactor.go

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package vm
import (
"context"
"github.com/filecoin-project/go-state-types/network"
"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/go-state-types/big"
"github.com/filecoin-project/go-state-types/exitcode"
"github.com/filecoin-project/lotus/chain/actors"
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"github.com/ipfs/go-cid"
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cbor "github.com/ipfs/go-ipld-cbor"
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builtin0 "github.com/filecoin-project/specs-actors/actors/builtin"
builtin2 "github.com/filecoin-project/specs-actors/v2/actors/builtin"
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builtin3 "github.com/filecoin-project/specs-actors/v3/actors/builtin"
builtin4 "github.com/filecoin-project/specs-actors/v4/actors/builtin"
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builtin5 "github.com/filecoin-project/specs-actors/v5/actors/builtin"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/chain/actors/aerrors"
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"github.com/filecoin-project/lotus/chain/actors/builtin"
"github.com/filecoin-project/lotus/chain/actors/builtin/account"
"github.com/filecoin-project/lotus/chain/types"
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)
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func init() {
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cst := cbor.NewMemCborStore()
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emptyobject, err := cst.Put(context.TODO(), []struct{}{})
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if err != nil {
panic(err)
}
EmptyObjectCid = emptyobject
}
var EmptyObjectCid cid.Cid
// TryCreateAccountActor creates account actors from only BLS/SECP256K1 addresses.
func TryCreateAccountActor(rt *Runtime, addr address.Address) (*types.Actor, address.Address, aerrors.ActorError) {
if err := rt.chargeGasSafe(PricelistByEpoch(rt.height).OnCreateActor()); err != nil {
return nil, address.Undef, err
}
if addr == build.ZeroAddress && rt.NetworkVersion() >= network.Version10 {
return nil, address.Undef, aerrors.New(exitcode.ErrIllegalArgument, "cannot create the zero bls actor")
}
addrID, err := rt.state.RegisterNewAddress(addr)
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if err != nil {
return nil, address.Undef, aerrors.Escalate(err, "registering actor address")
}
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act, aerr := makeActor(actors.VersionForNetwork(rt.NetworkVersion()), addr)
if aerr != nil {
return nil, address.Undef, aerr
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}
if err := rt.state.SetActor(addrID, act); err != nil {
return nil, address.Undef, aerrors.Escalate(err, "creating new actor failed")
}
p, err := actors.SerializeParams(&addr)
if err != nil {
return nil, address.Undef, aerrors.Escalate(err, "couldn't serialize params for actor construction")
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}
// call constructor on account
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_, aerr = rt.internalSend(builtin.SystemActorAddr, addrID, account.Methods.Constructor, big.Zero(), p)
if aerr != nil {
return nil, address.Undef, aerrors.Wrap(aerr, "failed to invoke account constructor")
}
act, err = rt.state.GetActor(addrID)
if err != nil {
return nil, address.Undef, aerrors.Escalate(err, "loading newly created actor failed")
}
return act, addrID, nil
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}
func makeActor(ver actors.Version, addr address.Address) (*types.Actor, aerrors.ActorError) {
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switch addr.Protocol() {
case address.BLS, address.SECP256K1:
return newAccountActor(ver), nil
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case address.ID:
return nil, aerrors.Newf(exitcode.SysErrInvalidReceiver, "no actor with given ID: %s", addr)
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case address.Actor:
return nil, aerrors.Newf(exitcode.SysErrInvalidReceiver, "no such actor: %s", addr)
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default:
return nil, aerrors.Newf(exitcode.SysErrInvalidReceiver, "address has unsupported protocol: %d", addr.Protocol())
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}
}
func newAccountActor(ver actors.Version) *types.Actor {
// TODO: ActorsUpgrade use a global actor registry?
var code cid.Cid
switch ver {
case actors.Version0:
code = builtin0.AccountActorCodeID
case actors.Version2:
code = builtin2.AccountActorCodeID
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case actors.Version3:
code = builtin3.AccountActorCodeID
case actors.Version4:
code = builtin4.AccountActorCodeID
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case actors.Version5:
code = builtin5.AccountActorCodeID
default:
panic("unsupported actors version")
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}
nact := &types.Actor{
Code: code,
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Balance: types.NewInt(0),
Head: EmptyObjectCid,
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}
return nact
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}