squash the spec shim and the vmcontext into the new runtime type

This commit is contained in:
whyrusleeping 2020-03-09 19:24:02 -07:00
parent f3798f9d40
commit 114cb2d2aa
7 changed files with 495 additions and 602 deletions

View File

@ -125,6 +125,30 @@ func (st *StateTree) GetActor(addr address.Address) (*types.Actor, error) {
return &act, nil
}
func (st *StateTree) DeleteActor(addr address.Address) error {
if addr == address.Undef {
return xerrors.Errorf("DeleteActor called on undefined address")
}
iaddr, err := st.LookupID(addr)
if err != nil {
if xerrors.Is(err, init_.ErrAddressNotFound) {
return xerrors.Errorf("resolution lookup failed (%s): %w", addr, err)
}
return xerrors.Errorf("address resolution: %w", err)
}
addr = iaddr
delete(st.actorcache, addr)
if err := st.root.Delete(context.TODO(), string(addr.Bytes())); err != nil {
return xerrors.Errorf("failed to delete actor: %w", err)
}
return nil
}
func (st *StateTree) Flush(ctx context.Context) (cid.Cid, error) {
ctx, span := trace.StartSpan(ctx, "stateTree.Flush")
defer span.End()

View File

@ -1,17 +1,10 @@
package types
import (
"context"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/filecoin-project/specs-actors/actors/crypto"
"github.com/filecoin-project/specs-actors/actors/runtime"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/chain/actors/aerrors"
cid "github.com/ipfs/go-cid"
cbor "github.com/ipfs/go-ipld-cbor"
cbg "github.com/whyrusleeping/cbor-gen"
)
@ -31,26 +24,6 @@ type StateTree interface {
GetActor(addr address.Address) (*Actor, error)
}
type VMContext interface {
Message() *Message
Origin() address.Address
Ipld() cbor.IpldStore
Send(to address.Address, method abi.MethodNum, value BigInt, params []byte) ([]byte, aerrors.ActorError)
BlockHeight() abi.ChainEpoch
GasUsed() BigInt
Storage() Storage
StateTree() (StateTree, aerrors.ActorError)
ActorCodeCID(address.Address) (cid.Cid, error)
LookupID(address.Address) (address.Address, error)
VerifySignature(sig *crypto.Signature, from address.Address, data []byte) aerrors.ActorError
ChargeGas(uint64) aerrors.ActorError
GetRandomness(personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) ([]byte, aerrors.ActorError)
GetBalance(address.Address) (BigInt, aerrors.ActorError)
Sys() runtime.Syscalls
Context() context.Context
}
type storageWrapper struct {
s Storage
}

View File

@ -21,6 +21,7 @@ import (
"github.com/filecoin-project/specs-actors/actors/builtin/power"
"github.com/filecoin-project/specs-actors/actors/builtin/reward"
"github.com/filecoin-project/specs-actors/actors/builtin/system"
"github.com/filecoin-project/specs-actors/actors/runtime"
vmr "github.com/filecoin-project/specs-actors/actors/runtime"
"github.com/filecoin-project/specs-actors/actors/util/adt"
@ -33,7 +34,7 @@ type invoker struct {
builtInState map[cid.Cid]reflect.Type
}
type invokeFunc func(act *types.Actor, vmctx types.VMContext, params []byte) ([]byte, aerrors.ActorError)
type invokeFunc func(act *types.Actor, rt runtime.Runtime, params []byte) ([]byte, aerrors.ActorError)
type nativeCode []invokeFunc
func NewInvoker() *invoker {
@ -56,7 +57,7 @@ func NewInvoker() *invoker {
return inv
}
func (inv *invoker) Invoke(act *types.Actor, vmctx types.VMContext, method abi.MethodNum, params []byte) ([]byte, aerrors.ActorError) {
func (inv *invoker) Invoke(act *types.Actor, rt runtime.Runtime, method abi.MethodNum, params []byte) ([]byte, aerrors.ActorError) {
if act.Code == builtin.AccountActorCodeID {
return nil, aerrors.Newf(254, "cannot invoke methods on account actors")
@ -64,13 +65,13 @@ func (inv *invoker) Invoke(act *types.Actor, vmctx types.VMContext, method abi.M
code, ok := inv.builtInCode[act.Code]
if !ok {
log.Errorf("no code for actor %s (Addr: %s)", act.Code, vmctx.Message().To)
log.Errorf("no code for actor %s (Addr: %s)", act.Code, rt.Message().Receiver())
return nil, aerrors.Newf(255, "no code for actor %s(%d)(%s)", act.Code, method, hex.EncodeToString(params))
}
if method >= abi.MethodNum(len(code)) || code[method] == nil {
return nil, aerrors.Newf(255, "no method %d on actor", method)
}
return code[method](act, vmctx, params)
return code[method](act, rt, params)
}
@ -87,7 +88,6 @@ type Invokee interface {
Exports() []interface{}
}
var tVMContext = reflect.TypeOf((*types.VMContext)(nil)).Elem()
var tAError = reflect.TypeOf((*aerrors.ActorError)(nil)).Elem()
func (*invoker) transform(instance Invokee) (nativeCode, error) {
@ -117,7 +117,7 @@ func (*invoker) transform(instance Invokee) (nativeCode, error) {
return nil, newErr("first arguemnt should be vmr.Runtime")
}
if t.In(1).Kind() != reflect.Ptr {
return nil, newErr("second argument should be types.VMContext")
return nil, newErr("second argument should be Runtime")
}
if t.NumOut() != 1 {
@ -150,10 +150,10 @@ func (*invoker) transform(instance Invokee) (nativeCode, error) {
}
}
}
shim := &runtimeShim{vmctx: in[1].Interface().(*VMContext)}
rval, aerror := shim.shimCall(func() interface{} {
rt := in[1].Interface().(*Runtime)
rval, aerror := rt.shimCall(func() interface{} {
ret := meth.Call([]reflect.Value{
reflect.ValueOf(shim),
reflect.ValueOf(rt),
param,
})
return ret[0].Interface()

View File

@ -84,7 +84,7 @@ func TestInvokerBasic(t *testing.T) {
bParam, err := actors.SerializeParams(&basicParams{B: 1})
assert.NoError(t, err)
_, aerr := code[0](nil, &VMContext{}, bParam)
_, aerr := code[0](nil, &Runtime{}, bParam)
assert.Equal(t, byte(1), aerrors.RetCode(aerr), "return code should be 1")
if aerrors.IsFatal(aerr) {
@ -96,14 +96,14 @@ func TestInvokerBasic(t *testing.T) {
bParam, err := actors.SerializeParams(&basicParams{B: 2})
assert.NoError(t, err)
_, aerr := code[10](nil, &VMContext{}, bParam)
_, aerr := code[10](nil, &Runtime{}, bParam)
assert.Equal(t, byte(12), aerrors.RetCode(aerr), "return code should be 12")
if aerrors.IsFatal(aerr) {
t.Fatal("err should not be fatal")
}
}
_, aerr := code[1](nil, &VMContext{}, []byte{99})
_, aerr := code[1](nil, &Runtime{}, []byte{99})
if aerrors.IsFatal(aerr) {
t.Fatal("err should not be fatal")
}

428
chain/vm/runtime.go Normal file
View File

@ -0,0 +1,428 @@
package vm
import (
"bytes"
"context"
"encoding/binary"
"fmt"
"runtime/debug"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/filecoin-project/specs-actors/actors/abi/big"
"github.com/filecoin-project/specs-actors/actors/crypto"
"github.com/filecoin-project/specs-actors/actors/runtime"
vmr "github.com/filecoin-project/specs-actors/actors/runtime"
"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
"github.com/filecoin-project/specs-actors/actors/util/adt"
"github.com/ipfs/go-cid"
hamt "github.com/ipfs/go-hamt-ipld"
cbor "github.com/ipfs/go-ipld-cbor"
cbg "github.com/whyrusleeping/cbor-gen"
"go.opencensus.io/trace"
"github.com/filecoin-project/lotus/chain/actors/aerrors"
"github.com/filecoin-project/lotus/chain/state"
"github.com/filecoin-project/lotus/chain/types"
)
type Runtime struct {
ctx context.Context
vm *VM
state *state.StateTree
msg *types.Message
height abi.ChainEpoch
cst cbor.IpldStore
gasAvailable types.BigInt
gasUsed types.BigInt
sys runtime.Syscalls
// address that started invoke chain
origin address.Address
internalExecutions []*ExecutionResult
}
func (rs *Runtime) ResolveAddress(address address.Address) (ret address.Address, ok bool) {
r, err := rs.LookupID(address)
if err != nil { // TODO: check notfound
rs.Abortf(exitcode.ErrPlaceholder, "resolve address: %v", err)
}
return r, true
}
func (rs *Runtime) Get(c cid.Cid, o vmr.CBORUnmarshaler) bool {
if err := rs.cst.Get(context.TODO(), c, o); err != nil {
// TODO: err not found?
rs.Abortf(exitcode.ErrPlaceholder, "storage get: %v", err)
}
return true
}
func (rs *Runtime) Put(x vmr.CBORMarshaler) cid.Cid {
c, err := rs.cst.Put(context.TODO(), x)
if err != nil {
rs.Abortf(exitcode.ErrPlaceholder, "storage put: %v", err) // todo: spec code?
}
return c
}
var _ vmr.Runtime = (*Runtime)(nil)
func (rs *Runtime) shimCall(f func() interface{}) (rval []byte, aerr aerrors.ActorError) {
defer func() {
if r := recover(); r != nil {
if ar, ok := r.(aerrors.ActorError); ok {
log.Warn("VM.Call failure: ", ar)
debug.PrintStack()
aerr = ar
return
}
debug.PrintStack()
log.Errorf("ERROR")
aerr = aerrors.Newf(1, "spec actors failure: %s", r)
}
}()
ret := f()
switch ret := ret.(type) {
case []byte:
return ret, nil
case *adt.EmptyValue:
return nil, nil
case cbg.CBORMarshaler:
buf := new(bytes.Buffer)
if err := ret.MarshalCBOR(buf); err != nil {
return nil, aerrors.Absorb(err, 2, "failed to marshal response to cbor")
}
return buf.Bytes(), nil
case nil:
return nil, nil
default:
return nil, aerrors.New(3, "could not determine type for response from call")
}
}
func (rs *Runtime) Message() vmr.Message {
var err error
rawm := *rs.msg
rawm.From, err = rs.LookupID(rawm.From)
if err != nil {
rs.Abortf(exitcode.ErrPlaceholder, "resolve from address: %v", err)
}
rawm.To, err = rs.LookupID(rawm.To)
if err != nil {
rs.Abortf(exitcode.ErrPlaceholder, "resolve to address: %v", err)
}
return &rawm
}
func (rs *Runtime) ValidateImmediateCallerAcceptAny() {
return
}
func (rs *Runtime) CurrentBalance() abi.TokenAmount {
b, err := rs.GetBalance(rs.Message().Receiver())
if err != nil {
rs.Abortf(exitcode.ExitCode(err.RetCode()), "get current balance: %v", err)
}
return b
}
func (rs *Runtime) GetActorCodeCID(addr address.Address) (ret cid.Cid, ok bool) {
act, err := rs.state.GetActor(addr)
if err != nil {
// todo: notfound
rs.Abortf(exitcode.ErrPlaceholder, "%v", err)
}
return act.Code, true
}
func (rt *Runtime) GetRandomness(personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) abi.Randomness {
res, err := rt.vm.rand.GetRandomness(rt.ctx, personalization, int64(randEpoch), entropy)
if err != nil {
rt.Abortf(exitcode.SysErrInternal, "could not get randomness: %s", err)
}
return res
}
func (rs *Runtime) Store() vmr.Store {
return rs
}
func (rt *Runtime) NewActorAddress() address.Address {
var b bytes.Buffer
if err := rt.Message().Caller().MarshalCBOR(&b); err != nil { // todo: spec says cbor; why not just bytes?
rt.Abortf(exitcode.ErrSerialization, "writing caller address into a buffer: %v", err)
}
act, err := rt.state.GetActor(rt.origin)
if err != nil {
rt.Abortf(exitcode.SysErrInternal, "getting top level actor: %v", err)
}
if err := binary.Write(&b, binary.BigEndian, act.Nonce); err != nil {
rt.Abortf(exitcode.ErrSerialization, "writing nonce address into a buffer: %v", err)
}
if err := binary.Write(&b, binary.BigEndian, uint64(0)); err != nil { // TODO: expose on vm
rt.Abortf(exitcode.ErrSerialization, "writing callSeqNum address into a buffer: %v", err)
}
addr, err := address.NewActorAddress(b.Bytes())
if err != nil {
rt.Abortf(exitcode.ErrSerialization, "create actor address: %v", err)
}
return addr
}
func (rt *Runtime) CreateActor(codeId cid.Cid, address address.Address) {
var err error
err = rt.state.SetActor(address, &types.Actor{
Code: codeId,
Head: EmptyObjectCid,
Nonce: 0,
Balance: big.Zero(),
})
if err != nil {
rt.Abortf(exitcode.SysErrInternal, "creating actor entry: %v", err)
}
}
func (rt *Runtime) DeleteActor() {
if err := rt.state.DeleteActor(rt.Message().Receiver()); err != nil {
rt.Abortf(exitcode.SysErrInternal, "failed to delete actor: %s", err)
}
}
const GasVerifySignature = 50
func (rs *Runtime) Syscalls() vmr.Syscalls {
// TODO: Make sure this is wrapped in something that charges gas for each of the calls
return rs.sys
}
func (rs *Runtime) StartSpan(name string) vmr.TraceSpan {
panic("implement me")
}
func (rt *Runtime) ValidateImmediateCallerIs(as ...address.Address) {
imm, err := rt.LookupID(rt.Message().Caller())
if err != nil {
rt.Abortf(exitcode.ErrIllegalState, "couldn't resolve immediate caller")
}
for _, a := range as {
if imm == a {
return
}
}
rt.Abortf(exitcode.ErrForbidden, "caller %s is not one of %s", rt.Message().Caller(), as)
}
func (rt *Runtime) Context() context.Context {
return rt.ctx
}
func (rs *Runtime) Abortf(code exitcode.ExitCode, msg string, args ...interface{}) {
panic(aerrors.NewfSkip(2, uint8(code), msg, args...))
}
func (rs *Runtime) AbortStateMsg(msg string) {
panic(aerrors.NewfSkip(3, 101, msg))
}
func (rt *Runtime) ValidateImmediateCallerType(ts ...cid.Cid) {
callerCid, ok := rt.GetActorCodeCID(rt.Message().Caller())
if !ok {
rt.Abortf(exitcode.ErrIllegalArgument, "failed to lookup code cid for caller")
}
for _, t := range ts {
if t == callerCid {
return
}
}
rt.Abortf(exitcode.ErrForbidden, "caller cid type %q was not one of %v", callerCid, ts)
}
func (rs *Runtime) CurrEpoch() abi.ChainEpoch {
return rs.height
}
type dumbWrapperType struct {
val []byte
}
func (dwt *dumbWrapperType) Into(um vmr.CBORUnmarshaler) error {
return um.UnmarshalCBOR(bytes.NewReader(dwt.val))
}
func (rs *Runtime) Send(to address.Address, method abi.MethodNum, m vmr.CBORMarshaler, value abi.TokenAmount) (vmr.SendReturn, exitcode.ExitCode) {
var params []byte
if m != nil {
buf := new(bytes.Buffer)
if err := m.MarshalCBOR(buf); err != nil {
rs.Abortf(exitcode.SysErrInvalidParameters, "failed to marshal input parameters: %s", err)
}
params = buf.Bytes()
}
ret, err := rs.internalSend(to, method, types.BigInt(value), params)
if err != nil {
if err.IsFatal() {
panic(err)
}
log.Warnf("vmctx send failed: to: %s, method: %d: ret: %d, err: %s", to, method, ret, err)
return nil, exitcode.ExitCode(err.RetCode())
}
return &dumbWrapperType{ret}, 0
}
func (rt *Runtime) internalSend(to address.Address, method abi.MethodNum, value types.BigInt, params []byte) ([]byte, aerrors.ActorError) {
fmt.Println("internal send: ", to, method)
ctx, span := trace.StartSpan(rt.ctx, "vmc.Send")
defer span.End()
if span.IsRecordingEvents() {
span.AddAttributes(
trace.StringAttribute("to", to.String()),
trace.Int64Attribute("method", int64(method)),
trace.StringAttribute("value", value.String()),
)
}
msg := &types.Message{
From: rt.Message().Receiver(),
To: to,
Method: method,
Value: value,
Params: params,
GasLimit: rt.gasAvailable,
}
st := rt.state
if err := st.Snapshot(ctx); err != nil {
return nil, aerrors.Fatalf("snapshot failed: %s", err)
}
defer st.ClearSnapshot()
ret, err, subrt := rt.vm.send(ctx, msg, rt, 0)
if err != nil {
fmt.Println("send failed")
if err := st.Revert(); err != nil {
return nil, aerrors.Escalate(err, "failed to revert state tree after failed subcall")
}
}
fmt.Println("after 'send'", ret)
mr := types.MessageReceipt{
ExitCode: exitcode.ExitCode(aerrors.RetCode(err)),
Return: ret,
GasUsed: types.EmptyInt,
}
var es = ""
if err != nil {
es = err.Error()
}
er := ExecutionResult{
Msg: msg,
MsgRct: &mr,
Error: es,
Subcalls: subrt.internalExecutions,
}
fmt.Println("keeping execution!")
rt.internalExecutions = append(rt.internalExecutions, &er)
return ret, err
}
func (rs *Runtime) State() vmr.StateHandle {
return &shimStateHandle{rs: rs}
}
type shimStateHandle struct {
rs *Runtime
}
func (ssh *shimStateHandle) Create(obj vmr.CBORMarshaler) {
c := ssh.rs.Put(obj)
ssh.rs.stateCommit(EmptyObjectCid, c)
}
func (ssh *shimStateHandle) Readonly(obj vmr.CBORUnmarshaler) {
act, err := ssh.rs.state.GetActor(ssh.rs.Message().Receiver())
if err != nil {
ssh.rs.Abortf(exitcode.SysErrInternal, "failed to get actor for Readonly state: %s", err)
}
ssh.rs.Get(act.Head, obj)
}
func (ssh *shimStateHandle) Transaction(obj vmr.CBORer, f func() interface{}) interface{} {
act, err := ssh.rs.state.GetActor(ssh.rs.Message().Receiver())
if err != nil {
ssh.rs.Abortf(exitcode.SysErrInternal, "failed to get actor for Readonly state: %s", err)
}
baseState := act.Head
ssh.rs.Get(baseState, obj)
out := f()
c := ssh.rs.Put(obj)
ssh.rs.stateCommit(baseState, c)
return out
}
func (rt *Runtime) LookupID(a address.Address) (address.Address, error) {
return rt.state.LookupID(a)
}
func (rt *Runtime) GetBalance(a address.Address) (types.BigInt, aerrors.ActorError) {
act, err := rt.state.GetActor(a)
switch err {
default:
return types.EmptyInt, aerrors.Escalate(err, "failed to look up actor balance")
case hamt.ErrNotFound:
return types.NewInt(0), nil
case nil:
return act.Balance, nil
}
}
func (rt *Runtime) stateCommit(oldh, newh cid.Cid) aerrors.ActorError {
rt.ChargeGas(gasCommit)
// TODO: we can make this more efficient in the future...
act, err := rt.state.GetActor(rt.Message().Receiver())
if err != nil {
rt.Abortf(exitcode.SysErrInternal, "failed to get actor to commit state: %s", err)
}
if act.Head != oldh {
rt.Abortf(exitcode.ErrIllegalState, "failed to update, inconsistent base reference")
}
act.Head = newh
if err := rt.state.SetActor(rt.Message().Receiver(), act); err != nil {
rt.Abortf(exitcode.SysErrInternal, "failed to set actor in commit state: %s", err)
}
return nil
}
func (rt *Runtime) ChargeGas(amount uint64) {
toUse := types.NewInt(amount)
rt.gasUsed = types.BigAdd(rt.gasUsed, toUse)
if rt.gasUsed.GreaterThan(rt.gasAvailable) {
rt.Abortf(exitcode.SysErrOutOfGas, "not enough gas: used=%s, available=%s", rt.gasUsed, rt.gasAvailable)
}
}

View File

@ -1,309 +0,0 @@
package vm
import (
"bytes"
"context"
"encoding/binary"
"runtime/debug"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/filecoin-project/specs-actors/actors/abi/big"
"github.com/filecoin-project/specs-actors/actors/crypto"
vmr "github.com/filecoin-project/specs-actors/actors/runtime"
"github.com/filecoin-project/specs-actors/actors/runtime/exitcode"
"github.com/filecoin-project/specs-actors/actors/util/adt"
"github.com/ipfs/go-cid"
cbg "github.com/whyrusleeping/cbor-gen"
"github.com/filecoin-project/lotus/chain/actors/aerrors"
"github.com/filecoin-project/lotus/chain/types"
)
type runtimeShim struct {
vmctx types.VMContext
}
func (rs *runtimeShim) ResolveAddress(address address.Address) (ret address.Address, ok bool) {
r, err := rs.vmctx.LookupID(address)
if err != nil { // TODO: check notfound
rs.Abortf(exitcode.ErrPlaceholder, "resolve address: %v", err)
}
return r, true
}
func (rs *runtimeShim) Get(c cid.Cid, o vmr.CBORUnmarshaler) bool {
err := rs.vmctx.Storage().Get(c, o)
if err != nil { // todo: not found
rs.Abortf(exitcode.ErrPlaceholder, "storage get: %v", err)
}
return true
}
func (rs *runtimeShim) Put(x vmr.CBORMarshaler) cid.Cid {
c, err := rs.vmctx.Storage().Put(x)
if err != nil {
rs.Abortf(exitcode.ErrPlaceholder, "storage put: %v", err) // todo: spec code?
}
return c
}
var _ vmr.Runtime = (*runtimeShim)(nil)
func (rs *runtimeShim) shimCall(f func() interface{}) (rval []byte, aerr aerrors.ActorError) {
defer func() {
if r := recover(); r != nil {
if ar, ok := r.(aerrors.ActorError); ok {
log.Warn("VM.Call failure: ", ar)
debug.PrintStack()
aerr = ar
return
}
debug.PrintStack()
log.Errorf("ERROR")
aerr = aerrors.Newf(1, "spec actors failure: %s", r)
}
}()
ret := f()
switch ret := ret.(type) {
case []byte:
return ret, nil
case *adt.EmptyValue:
return nil, nil
case cbg.CBORMarshaler:
buf := new(bytes.Buffer)
if err := ret.MarshalCBOR(buf); err != nil {
return nil, aerrors.Absorb(err, 2, "failed to marshal response to cbor")
}
return buf.Bytes(), nil
case nil:
return nil, nil
default:
return nil, aerrors.New(3, "could not determine type for response from call")
}
}
func (rs *runtimeShim) Message() vmr.Message {
var err error
rawm := *rs.vmctx.Message() // TODO: normalize addresses earlier
rawm.From, err = rs.vmctx.LookupID(rawm.From)
if err != nil {
rs.Abortf(exitcode.ErrPlaceholder, "resolve from address: %v", err)
}
rawm.To, err = rs.vmctx.LookupID(rawm.To)
if err != nil {
rs.Abortf(exitcode.ErrPlaceholder, "resolve to address: %v", err)
}
return &rawm
}
func (rs *runtimeShim) ValidateImmediateCallerAcceptAny() {
return
}
func (rs *runtimeShim) CurrentBalance() abi.TokenAmount {
b, err := rs.vmctx.GetBalance(rs.vmctx.Message().To)
if err != nil {
rs.Abortf(exitcode.ExitCode(err.RetCode()), "get current balance: %v", err)
}
return b
}
func (rs *runtimeShim) GetActorCodeCID(addr address.Address) (ret cid.Cid, ok bool) {
ret, err := rs.vmctx.ActorCodeCID(addr)
if err != nil {
// todo: notfound
rs.Abortf(exitcode.ErrPlaceholder, "%v", err)
}
return ret, true
}
func (rs *runtimeShim) GetRandomness(personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) abi.Randomness {
r, err := rs.vmctx.GetRandomness(personalization, randEpoch, entropy)
if err != nil {
rs.Abortf(exitcode.SysErrInternal, "getting randomness: %v", err)
}
return r
}
func (rs *runtimeShim) Store() vmr.Store {
return rs
}
func (rs *runtimeShim) NewActorAddress() address.Address {
var b bytes.Buffer
if err := rs.ImmediateCaller().MarshalCBOR(&b); err != nil { // todo: spec says cbor; why not just bytes?
rs.Abortf(exitcode.ErrSerialization, "writing caller address into a buffer: %v", err)
}
var err error
st, err := rs.vmctx.StateTree()
if err != nil {
rs.Abortf(exitcode.SysErrInternal, "getting statetree: %v", err)
}
act, err := st.GetActor(rs.vmctx.Origin())
if err != nil {
rs.Abortf(exitcode.SysErrInternal, "getting top level actor: %v", err)
}
if err := binary.Write(&b, binary.BigEndian, act.Nonce); err != nil {
rs.Abortf(exitcode.ErrSerialization, "writing nonce address into a buffer: %v", err)
}
if err := binary.Write(&b, binary.BigEndian, uint64(0)); err != nil { // TODO: expose on vm
rs.Abortf(exitcode.ErrSerialization, "writing callSeqNum address into a buffer: %v", err)
}
addr, err := address.NewActorAddress(b.Bytes())
if err != nil {
rs.Abortf(exitcode.ErrSerialization, "create actor address: %v", err)
}
return addr
}
func (rs *runtimeShim) CreateActor(codeId cid.Cid, address address.Address) {
var err error
st, err := rs.vmctx.StateTree()
if err != nil {
rs.Abortf(exitcode.SysErrInternal, "getting statetree: %v", err)
}
err = st.SetActor(address, &types.Actor{
Code: codeId,
Head: EmptyObjectCid,
Nonce: 0,
Balance: big.Zero(),
})
if err != nil {
rs.Abortf(exitcode.SysErrInternal, "creating actor entry: %v", err)
}
return
}
func (rs *runtimeShim) DeleteActor() {
panic("implement me")
}
func (rs *runtimeShim) Syscalls() vmr.Syscalls {
return rs.vmctx.Sys()
}
func (rs *runtimeShim) StartSpan(name string) vmr.TraceSpan {
panic("implement me")
}
func (rs *runtimeShim) ValidateImmediateCallerIs(as ...address.Address) {
imm, err := rs.vmctx.LookupID(rs.vmctx.Message().From)
if err != nil {
rs.Abortf(exitcode.ErrIllegalState, "couldn't resolve immediate caller")
}
for _, a := range as {
if imm == a {
return
}
}
rs.Abortf(exitcode.ErrForbidden, "caller %s is not one of %s", rs.vmctx.Message().From, as)
}
func (rs *runtimeShim) ImmediateCaller() address.Address {
return rs.vmctx.Message().From
}
func (rs *runtimeShim) Context() context.Context {
return rs.vmctx.Context()
}
func (rs *runtimeShim) Abortf(code exitcode.ExitCode, msg string, args ...interface{}) {
panic(aerrors.NewfSkip(2, uint8(code), msg, args...))
}
func (rs *runtimeShim) AbortStateMsg(msg string) {
panic(aerrors.NewfSkip(3, 101, msg))
}
func (rs *runtimeShim) ValidateImmediateCallerType(...cid.Cid) {
log.Info("validate caller type is dumb")
}
func (rs *runtimeShim) CurrEpoch() abi.ChainEpoch {
return rs.vmctx.BlockHeight()
}
type dumbWrapperType struct {
val []byte
}
func (dwt *dumbWrapperType) Into(um vmr.CBORUnmarshaler) error {
return um.UnmarshalCBOR(bytes.NewReader(dwt.val))
}
func (rs *runtimeShim) Send(to address.Address, method abi.MethodNum, m vmr.CBORMarshaler, value abi.TokenAmount) (vmr.SendReturn, exitcode.ExitCode) {
var params []byte
if m != nil {
buf := new(bytes.Buffer)
if err := m.MarshalCBOR(buf); err != nil {
rs.Abortf(exitcode.SysErrInvalidParameters, "failed to marshal input parameters: %s", err)
}
params = buf.Bytes()
}
ret, err := rs.vmctx.Send(to, method, types.BigInt(value), params)
if err != nil {
if err.IsFatal() {
panic(err)
}
log.Warnf("vmctx send failed: to: %s, method: %d: ret: %d, err: %s", to, method, ret, err)
return nil, exitcode.ExitCode(err.RetCode())
}
return &dumbWrapperType{ret}, 0
}
func (rs *runtimeShim) State() vmr.StateHandle {
return &shimStateHandle{rs: rs}
}
type shimStateHandle struct {
rs *runtimeShim
}
func (ssh *shimStateHandle) Create(obj vmr.CBORMarshaler) {
c, err := ssh.rs.vmctx.Storage().Put(obj)
if err != nil {
panic(err)
}
if err := ssh.rs.vmctx.Storage().Commit(EmptyObjectCid, c); err != nil {
panic(err)
}
}
func (ssh *shimStateHandle) Readonly(obj vmr.CBORUnmarshaler) {
if err := ssh.rs.vmctx.Storage().Get(ssh.rs.vmctx.Storage().GetHead(), obj); err != nil {
panic(err)
}
}
func (ssh *shimStateHandle) Transaction(obj vmr.CBORer, f func() interface{}) interface{} {
head := ssh.rs.vmctx.Storage().GetHead()
if err := ssh.rs.vmctx.Storage().Get(head, obj); err != nil {
panic(err)
}
out := f()
c, err := ssh.rs.vmctx.Storage().Put(obj)
if err != nil {
panic(err)
}
if err := ssh.rs.vmctx.Storage().Commit(head, c); err != nil {
panic(err)
}
return out
}

View File

@ -11,7 +11,6 @@ import (
block "github.com/ipfs/go-block-format"
cid "github.com/ipfs/go-cid"
hamt "github.com/ipfs/go-hamt-ipld"
blockstore "github.com/ipfs/go-ipfs-blockstore"
cbor "github.com/ipfs/go-ipld-cbor"
logging "github.com/ipfs/go-log/v2"
@ -33,7 +32,6 @@ import (
"github.com/filecoin-project/lotus/chain/state"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/lib/bufbstore"
"github.com/filecoin-project/lotus/lib/sigs"
)
var log = logging.Logger("vm")
@ -60,208 +58,11 @@ type ExecutionResult struct {
Error string
}
type VMContext struct {
ctx context.Context
vm *VM
state *state.StateTree
msg *types.Message
height abi.ChainEpoch
cst cbor.IpldStore
gasAvailable types.BigInt
gasUsed types.BigInt
sys runtime.Syscalls
// root cid of the state of the actor this invocation will be on
sroot cid.Cid
// address that started invoke chain
origin address.Address
internalExecutions []*ExecutionResult
}
// Message is the message that kicked off the current invocation
func (vmc *VMContext) Message() *types.Message {
return vmc.msg
}
func (vmc *VMContext) GetRandomness(personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) ([]byte, aerrors.ActorError) {
res, err := vmc.vm.rand.GetRandomness(vmc.ctx, personalization, int64(randEpoch), entropy)
if err != nil {
return nil, aerrors.Escalate(err, "could not get randomness")
}
return res, nil
}
func (vmc *VMContext) Sys() runtime.Syscalls {
return vmc.sys
}
// Storage interface
func (vmc *VMContext) Put(i cbg.CBORMarshaler) (cid.Cid, aerrors.ActorError) {
c, err := vmc.cst.Put(context.TODO(), i)
if err != nil {
return cid.Undef, aerrors.HandleExternalError(err, fmt.Sprintf("putting object %T", i))
}
return c, nil
}
func (vmc *VMContext) Get(c cid.Cid, out cbg.CBORUnmarshaler) aerrors.ActorError {
err := vmc.cst.Get(context.TODO(), c, out)
if err != nil {
return aerrors.HandleExternalError(err, "getting cid")
}
return nil
}
func (vmc *VMContext) GetHead() cid.Cid {
return vmc.sroot
}
func (vmc *VMContext) Commit(oldh, newh cid.Cid) aerrors.ActorError {
if err := vmc.ChargeGas(gasCommit); err != nil {
return aerrors.Wrap(err, "out of gas")
}
if vmc.sroot != oldh {
return aerrors.New(1, "failed to update, inconsistent base reference")
}
vmc.sroot = newh
return nil
}
// End of storage interface
// Storage provides access to the VM storage layer
func (vmc *VMContext) Storage() types.Storage {
return vmc
}
func (vmc *VMContext) Ipld() cbor.IpldStore {
return vmc.cst
}
func (vmc *VMContext) Origin() address.Address {
return vmc.origin
}
// Send allows the current execution context to invoke methods on other actors in the system
func (vmc *VMContext) Send(to address.Address, method abi.MethodNum, value types.BigInt, params []byte) ([]byte, aerrors.ActorError) {
ctx, span := trace.StartSpan(vmc.ctx, "vmc.Send")
defer span.End()
if span.IsRecordingEvents() {
span.AddAttributes(
trace.StringAttribute("to", to.String()),
trace.Int64Attribute("method", int64(method)),
trace.StringAttribute("value", value.String()),
)
}
msg := &types.Message{
From: vmc.msg.To,
To: to,
Method: method,
Value: value,
Params: params,
GasLimit: vmc.gasAvailable,
}
st := vmc.state
if err := st.Snapshot(ctx); err != nil {
return nil, aerrors.Fatalf("snapshot failed: %s", err)
}
defer st.ClearSnapshot()
ret, err, _ := vmc.vm.send(ctx, msg, vmc, 0)
if err != nil {
if err := st.Revert(); err != nil {
return nil, aerrors.Escalate(err, "failed to revert state tree after failed subcall")
}
}
mr := types.MessageReceipt{
ExitCode: exitcode.ExitCode(aerrors.RetCode(err)),
Return: ret,
GasUsed: types.EmptyInt,
}
var es = ""
if err != nil {
es = err.Error()
}
er := ExecutionResult{
Msg: msg,
MsgRct: &mr,
Error: es,
}
vmc.internalExecutions = append(vmc.internalExecutions, &er)
return ret, err
}
// BlockHeight returns the height of the block this message was added to the chain in
func (vmc *VMContext) BlockHeight() abi.ChainEpoch {
return vmc.height
}
func (vmc *VMContext) GasUsed() types.BigInt {
return vmc.gasUsed
}
func (vmc *VMContext) ChargeGas(amount uint64) aerrors.ActorError {
toUse := types.NewInt(amount)
vmc.gasUsed = types.BigAdd(vmc.gasUsed, toUse)
if vmc.gasUsed.GreaterThan(vmc.gasAvailable) {
return aerrors.Newf(uint8(exitcode.SysErrOutOfGas), "not enough gas: used=%s, available=%s", vmc.gasUsed, vmc.gasAvailable)
}
return nil
}
func (vmc *VMContext) StateTree() (types.StateTree, aerrors.ActorError) {
if vmc.msg.To != builtin.InitActorAddr {
return nil, aerrors.Escalate(fmt.Errorf("only init actor can access state tree directly"), "invalid use of StateTree")
}
return vmc.state, nil
}
func (vmc *VMContext) ActorCodeCID(addr address.Address) (ret cid.Cid, err error) {
act, err := vmc.state.GetActor(addr)
if err != nil {
return cid.Undef, err
}
return act.Code, nil
}
func (vmc *VMContext) LookupID(a address.Address) (address.Address, error) {
return vmc.state.LookupID(a)
}
const GasVerifySignature = 50
func (vmctx *VMContext) VerifySignature(sig *crypto.Signature, act address.Address, data []byte) aerrors.ActorError {
if err := vmctx.ChargeGas(GasVerifySignature); err != nil {
return err
}
if act.Protocol() == address.ID {
kaddr, err := ResolveToKeyAddr(vmctx.state, vmctx.cst, act)
if err != nil {
return aerrors.Wrap(err, "failed to resolve address to key address")
}
act = kaddr
}
if err := sigs.Verify(sig, act, data); err != nil {
return aerrors.New(2, "signature verification failed")
}
return nil
}
func ResolveToKeyAddr(state types.StateTree, cst cbor.IpldStore, addr address.Address) (address.Address, aerrors.ActorError) {
if addr.Protocol() == address.BLS || addr.Protocol() == address.SECP256K1 {
@ -285,56 +86,35 @@ func ResolveToKeyAddr(state types.StateTree, cst cbor.IpldStore, addr address.Ad
return aast.Address, nil
}
func (vmctx *VMContext) GetBalance(a address.Address) (types.BigInt, aerrors.ActorError) {
act, err := vmctx.state.GetActor(a)
switch err {
default:
return types.EmptyInt, aerrors.Escalate(err, "failed to look up actor balance")
case hamt.ErrNotFound:
return types.NewInt(0), nil
case nil:
return act.Balance, nil
}
}
func (vmctx *VMContext) Context() context.Context {
return vmctx.ctx
}
var _ cbor.IpldBlockstore = (*gasChargingBlocks)(nil)
type gasChargingBlocks struct {
chargeGas func(uint64) aerrors.ActorError
chargeGas func(uint64)
under cbor.IpldBlockstore
}
func (bs *gasChargingBlocks) Get(c cid.Cid) (block.Block, error) {
if err := bs.chargeGas(gasGetObj); err != nil {
return nil, err
}
bs.chargeGas(gasGetObj)
blk, err := bs.under.Get(c)
if err != nil {
return nil, aerrors.Escalate(err, "failed to get block from blockstore")
}
if err := bs.chargeGas(uint64(len(blk.RawData())) * gasGetPerByte); err != nil {
return nil, err
}
bs.chargeGas(uint64(len(blk.RawData())) * gasGetPerByte)
return blk, nil
}
func (bs *gasChargingBlocks) Put(blk block.Block) error {
if err := bs.chargeGas(gasPutObj + uint64(len(blk.RawData()))*gasPutPerByte); err != nil {
return err
}
bs.chargeGas(gasPutObj + uint64(len(blk.RawData()))*gasPutPerByte)
if err := bs.under.Put(blk); err != nil {
return aerrors.Escalate(err, "failed to write data to disk")
}
return nil
}
func (vm *VM) makeVMContext(ctx context.Context, sroot cid.Cid, msg *types.Message, origin address.Address, usedGas types.BigInt) *VMContext {
vmc := &VMContext{
func (vm *VM) makeRuntime(ctx context.Context, sroot cid.Cid, msg *types.Message, origin address.Address, usedGas types.BigInt) *Runtime {
rt := &Runtime{
ctx: ctx,
vm: vm,
state: vm.cstate,
@ -347,11 +127,12 @@ func (vm *VM) makeVMContext(ctx context.Context, sroot cid.Cid, msg *types.Messa
gasUsed: usedGas,
gasAvailable: msg.GasLimit,
}
vmc.cst = &cbor.BasicIpldStore{
Blocks: &gasChargingBlocks{vmc.ChargeGas, vm.cst.Blocks},
rt.cst = &cbor.BasicIpldStore{
Blocks: &gasChargingBlocks{rt.ChargeGas, vm.cst.Blocks},
Atlas: vm.cst.Atlas,
}
return vmc
return rt
}
type VM struct {
@ -399,8 +180,8 @@ type ApplyRet struct {
InternalExecutions []*ExecutionResult
}
func (vm *VM) send(ctx context.Context, msg *types.Message, parent *VMContext,
gasCharge uint64) ([]byte, aerrors.ActorError, *VMContext) {
func (vm *VM) send(ctx context.Context, msg *types.Message, parent *Runtime,
gasCharge uint64) ([]byte, aerrors.ActorError, *Runtime) {
st := vm.cstate
@ -428,17 +209,15 @@ func (vm *VM) send(ctx context.Context, msg *types.Message, parent *VMContext,
gasUsed = types.BigAdd(parent.gasUsed, gasUsed)
origin = parent.origin
}
vmctx := vm.makeVMContext(ctx, toActor.Head, msg, origin, gasUsed)
rt := vm.makeRuntime(ctx, toActor.Head, msg, origin, gasUsed)
if parent != nil {
defer func() {
parent.gasUsed = vmctx.gasUsed
parent.gasUsed = rt.gasUsed
}()
}
if types.BigCmp(msg.Value, types.NewInt(0)) != 0 {
if aerr := vmctx.ChargeGas(gasFundTransfer); aerr != nil {
return nil, aerrors.Wrap(aerr, "sending funds"), nil
}
rt.ChargeGas(gasFundTransfer)
if err := Transfer(fromActor, toActor, msg.Value); err != nil {
return nil, aerrors.Absorb(err, 1, "failed to transfer funds"), nil
@ -446,14 +225,14 @@ func (vm *VM) send(ctx context.Context, msg *types.Message, parent *VMContext,
}
if msg.Method != 0 {
ret, err := vm.Invoke(toActor, vmctx, msg.Method, msg.Params)
ret, err := vm.Invoke(toActor, rt, msg.Method, msg.Params)
if !aerrors.IsFatal(err) {
toActor.Head = vmctx.Storage().GetHead()
toActor.Head = rt.sroot
}
return ret, err, vmctx
return ret, err, rt
}
return nil, nil, vmctx
return nil, nil, rt
}
func checkMessage(msg *types.Message) error {
@ -546,7 +325,7 @@ func (vm *VM) ApplyMessage(ctx context.Context, msg *types.Message) (*ApplyRet,
}
fromActor.Nonce++
ret, actorErr, vmctx := vm.send(ctx, msg, nil, msgGasCost)
ret, actorErr, rt := vm.send(ctx, msg, nil, msgGasCost)
if aerrors.IsFatal(actorErr) {
return nil, xerrors.Errorf("[from=%s,to=%s,n=%d,m=%d,h=%d] fatal error: %w", msg.From, msg.To, msg.Nonce, msg.Method, vm.blockHeight, actorErr)
@ -565,8 +344,8 @@ func (vm *VM) ApplyMessage(ctx context.Context, msg *types.Message) (*ApplyRet,
return nil, xerrors.Errorf("revert state failed: %w", err)
}
} else {
gasUsed = rt.gasUsed
// refund unused gas
gasUsed = vmctx.GasUsed()
refund := types.BigMul(types.BigSub(msg.GasLimit, gasUsed), msg.GasPrice)
if err := Transfer(gasHolder, fromActor, refund); err != nil {
return nil, xerrors.Errorf("failed to refund gas")
@ -594,7 +373,7 @@ func (vm *VM) ApplyMessage(ctx context.Context, msg *types.Message) (*ApplyRet,
GasUsed: gasUsed,
},
ActorErr: actorErr,
InternalExecutions: vmctx.internalExecutions,
InternalExecutions: rt.internalExecutions,
}, nil
}
@ -744,26 +523,24 @@ func (vm *VM) SetBlockHeight(h abi.ChainEpoch) {
vm.blockHeight = h
}
func (vm *VM) Invoke(act *types.Actor, vmctx *VMContext, method abi.MethodNum, params []byte) ([]byte, aerrors.ActorError) {
ctx, span := trace.StartSpan(vmctx.ctx, "vm.Invoke")
func (vm *VM) Invoke(act *types.Actor, rt *Runtime, method abi.MethodNum, params []byte) ([]byte, aerrors.ActorError) {
ctx, span := trace.StartSpan(rt.ctx, "vm.Invoke")
defer span.End()
if span.IsRecordingEvents() {
span.AddAttributes(
trace.StringAttribute("to", vmctx.Message().To.String()),
trace.StringAttribute("to", rt.Message().Receiver().String()),
trace.Int64Attribute("method", int64(method)),
trace.StringAttribute("value", vmctx.Message().Value.String()),
trace.StringAttribute("value", rt.Message().ValueReceived().String()),
)
}
var oldCtx context.Context
oldCtx, vmctx.ctx = vmctx.ctx, ctx
oldCtx, rt.ctx = rt.ctx, ctx
defer func() {
vmctx.ctx = oldCtx
rt.ctx = oldCtx
}()
if err := vmctx.ChargeGas(gasInvoke); err != nil {
return nil, aerrors.Wrap(err, "invokeing")
}
ret, err := vm.inv.Invoke(act, vmctx, method, params)
rt.ChargeGas(gasInvoke)
ret, err := vm.inv.Invoke(act, rt, method, params)
if err != nil {
return nil, err
}