lotus/chain/vm/runtime.go

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package vm
import (
"bytes"
"context"
"encoding/binary"
"fmt"
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"os"
"time"
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"github.com/ipfs/go-cid"
ipldcbor "github.com/ipfs/go-ipld-cbor"
"go.opencensus.io/trace"
"golang.org/x/xerrors"
"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/go-state-types/abi"
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actorstypes "github.com/filecoin-project/go-state-types/actors"
"github.com/filecoin-project/go-state-types/cbor"
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"github.com/filecoin-project/go-state-types/crypto"
"github.com/filecoin-project/go-state-types/exitcode"
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"github.com/filecoin-project/go-state-types/network"
rtt "github.com/filecoin-project/go-state-types/rt"
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rt0 "github.com/filecoin-project/specs-actors/actors/runtime"
rt2 "github.com/filecoin-project/specs-actors/v2/actors/runtime"
rt3 "github.com/filecoin-project/specs-actors/v3/actors/runtime"
rt4 "github.com/filecoin-project/specs-actors/v4/actors/runtime"
rt5 "github.com/filecoin-project/specs-actors/v5/actors/runtime"
rt6 "github.com/filecoin-project/specs-actors/v6/actors/runtime"
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rt7 "github.com/filecoin-project/specs-actors/v7/actors/runtime"
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"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/lotus/chain/actors"
"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/state"
"github.com/filecoin-project/lotus/chain/types"
)
type Message struct {
msg types.Message
}
func (m *Message) Caller() address.Address {
if m.msg.From.Protocol() != address.ID {
panic("runtime message has a non-ID caller")
}
return m.msg.From
}
func (m *Message) Receiver() address.Address {
if m.msg.To != address.Undef && m.msg.To.Protocol() != address.ID {
panic("runtime message has a non-ID receiver")
}
return m.msg.To
}
func (m *Message) ValueReceived() abi.TokenAmount {
return m.msg.Value
}
// EnableDetailedTracing has different behaviour in the LegacyVM and FVM.
// In the LegacyVM, it enables detailed gas tracing, slowing down execution.
// In the FVM, it enables execution traces, which are primarily used to observe subcalls.
var EnableDetailedTracing = os.Getenv("LOTUS_VM_ENABLE_TRACING") == "1"
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type Runtime struct {
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rt7.Message
rt7.Syscalls
ctx context.Context
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vm *LegacyVM
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state *state.StateTree
height abi.ChainEpoch
cst ipldcbor.IpldStore
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pricelist Pricelist
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gasAvailable int64
gasUsed int64
// address that started invoke chain
origin address.Address
originNonce uint64
executionTrace types.ExecutionTrace
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depth uint64
numActorsCreated uint64
allowInternal bool
callerValidated bool
lastGasChargeTime time.Time
lastGasCharge *types.GasTrace
}
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func (rt *Runtime) BaseFee() abi.TokenAmount {
return rt.vm.baseFee
}
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func (rt *Runtime) NetworkVersion() network.Version {
return rt.vm.networkVersion
}
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func (rt *Runtime) TotalFilCircSupply() abi.TokenAmount {
cs, err := rt.vm.GetCircSupply(rt.ctx)
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if err != nil {
rt.Abortf(exitcode.ErrIllegalState, "failed to get total circ supply: %s", err)
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}
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return cs
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}
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func (rt *Runtime) ResolveAddress(addr address.Address) (ret address.Address, ok bool) {
r, err := rt.state.LookupID(addr)
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if err != nil {
if xerrors.Is(err, types.ErrActorNotFound) {
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return address.Undef, false
}
panic(aerrors.Fatalf("failed to resolve address %s: %s", addr, err))
}
return r, true
}
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type notFoundErr interface {
IsNotFound() bool
}
func (rt *Runtime) StoreGet(c cid.Cid, o cbor.Unmarshaler) bool {
if err := rt.cst.Get(context.TODO(), c, o); err != nil {
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var nfe notFoundErr
if xerrors.As(err, &nfe) && nfe.IsNotFound() {
if xerrors.As(err, new(ipldcbor.SerializationError)) {
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panic(aerrors.Newf(exitcode.ErrSerialization, "failed to unmarshal cbor object %s", err))
}
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return false
}
panic(aerrors.Fatalf("failed to get cbor object %s: %s", c, err))
}
return true
}
func (rt *Runtime) StorePut(x cbor.Marshaler) cid.Cid {
c, err := rt.cst.Put(context.TODO(), x)
if err != nil {
if xerrors.As(err, new(ipldcbor.SerializationError)) {
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panic(aerrors.Newf(exitcode.ErrSerialization, "failed to marshal cbor object %s", err))
}
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panic(aerrors.Fatalf("failed to put cbor object: %s", err))
}
return c
}
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var _ rt0.Runtime = (*Runtime)(nil)
var _ rt5.Runtime = (*Runtime)(nil)
var _ rt2.Runtime = (*Runtime)(nil)
var _ rt3.Runtime = (*Runtime)(nil)
var _ rt4.Runtime = (*Runtime)(nil)
var _ rt5.Runtime = (*Runtime)(nil)
var _ rt6.Runtime = (*Runtime)(nil)
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var _ rt7.Runtime = (*Runtime)(nil)
func (rt *Runtime) shimCall(f func() interface{}) (rval []byte, aerr aerrors.ActorError) {
defer func() {
if r := recover(); r != nil {
if ar, ok := r.(aerrors.ActorError); ok {
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log.Warnf("LegacyVM.Call failure in call from: %s to %s: %+v", rt.Caller(), rt.Receiver(), ar)
aerr = ar
return
}
// log.Desugar().WithOptions(zap.AddStacktrace(zapcore.ErrorLevel)).
// Sugar().Errorf("spec actors failure: %s", r)
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log.Errorf("spec actors failure: %s", r)
if rt.NetworkVersion() <= network.Version3 {
aerr = aerrors.Newf(1, "spec actors failure: %s", r)
} else {
aerr = aerrors.Newf(exitcode.SysErrIllegalInstruction, "spec actors failure: %s", r)
}
}
}()
ret := f()
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if !rt.callerValidated {
rt.Abortf(exitcode.SysErrorIllegalActor, "Caller MUST be validated during method execution")
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}
switch ret := ret.(type) {
case []byte:
return ret, nil
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case *abi.EmptyValue:
return nil, nil
case cbor.Marshaler:
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 (rt *Runtime) ValidateImmediateCallerAcceptAny() {
rt.abortIfAlreadyValidated()
return
}
func (rt *Runtime) CurrentBalance() abi.TokenAmount {
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b, err := rt.GetBalance(rt.Receiver())
if err != nil {
rt.Abortf(err.RetCode(), "get current balance: %v", err)
}
return b
}
func (rt *Runtime) GetActorCodeCID(addr address.Address) (ret cid.Cid, ok bool) {
act, err := rt.state.GetActor(addr)
if err != nil {
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if xerrors.Is(err, types.ErrActorNotFound) {
return cid.Undef, false
}
panic(aerrors.Fatalf("failed to get actor: %s", err))
}
return act.Code, true
}
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func (rt *Runtime) GetRandomnessFromTickets(personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) abi.Randomness {
res, err := rt.vm.rand.GetChainRandomness(rt.ctx, personalization, randEpoch, entropy)
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if err != nil {
panic(aerrors.Fatalf("could not get ticket randomness: %s", err))
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}
return res
}
func (rt *Runtime) GetRandomnessFromBeacon(personalization crypto.DomainSeparationTag, randEpoch abi.ChainEpoch, entropy []byte) abi.Randomness {
res, err := rt.vm.rand.GetBeaconRandomness(rt.ctx, personalization, randEpoch, entropy)
if err != nil {
panic(aerrors.Fatalf("could not get beacon randomness: %s", err))
}
return res
}
func (rt *Runtime) NewActorAddress() address.Address {
var b bytes.Buffer
oa, _ := ResolveToDeterministicAddr(rt.vm.cstate, rt.vm.cst, rt.origin)
if err := oa.MarshalCBOR(&b); err != nil { // todo: spec says cbor; why not just bytes?
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panic(aerrors.Fatalf("writing caller address into a buffer: %v", err))
}
if err := binary.Write(&b, binary.BigEndian, rt.originNonce); err != nil {
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panic(aerrors.Fatalf("writing nonce address into a buffer: %v", err))
}
if err := binary.Write(&b, binary.BigEndian, rt.numActorsCreated); err != nil { // TODO: expose on vm
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panic(aerrors.Fatalf("writing callSeqNum address into a buffer: %v", err))
}
addr, err := address.NewActorAddress(b.Bytes())
if err != nil {
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panic(aerrors.Fatalf("create actor address: %v", err))
}
rt.incrementNumActorsCreated()
return addr
}
func (rt *Runtime) CreateActor(codeID cid.Cid, addr address.Address) {
if addr == address.Undef && rt.NetworkVersion() >= network.Version7 {
rt.Abortf(exitcode.SysErrorIllegalArgument, "CreateActor with Undef address")
}
act, aerr := rt.vm.areg.Create(codeID, rt)
if aerr != nil {
rt.Abortf(aerr.RetCode(), aerr.Error())
}
_, err := rt.state.GetActor(addr)
if err == nil {
rt.Abortf(exitcode.SysErrorIllegalArgument, "Actor address already exists")
}
rt.chargeGas(rt.Pricelist().OnCreateActor())
err = rt.state.SetActor(addr, act)
if err != nil {
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panic(aerrors.Fatalf("creating actor entry: %v", err))
}
_ = rt.chargeGasSafe(gasOnActorExec)
}
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// DeleteActor deletes the executing actor from the state tree, transferring
// any balance to beneficiary.
// Aborts if the beneficiary does not exist or is the calling actor.
// May only be called by the actor itself.
func (rt *Runtime) DeleteActor(beneficiary address.Address) {
rt.chargeGas(rt.Pricelist().OnDeleteActor())
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act, err := rt.state.GetActor(rt.Receiver())
if err != nil {
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if xerrors.Is(err, types.ErrActorNotFound) {
rt.Abortf(exitcode.SysErrorIllegalActor, "failed to load actor in delete actor: %s", err)
}
panic(aerrors.Fatalf("failed to get actor: %s", err))
}
if !act.Balance.IsZero() {
// TODO: Should be safe to drop the version-check,
// since only the paych actor called this pre-version 7, but let's leave it for now
if rt.NetworkVersion() >= network.Version7 {
beneficiaryId, found := rt.ResolveAddress(beneficiary)
if !found {
rt.Abortf(exitcode.SysErrorIllegalArgument, "beneficiary doesn't exist")
}
if beneficiaryId == rt.Receiver() {
rt.Abortf(exitcode.SysErrorIllegalArgument, "benefactor cannot be beneficiary")
}
}
// Transfer the executing actor's balance to the beneficiary
if err := rt.vm.transfer(rt.Receiver(), beneficiary, act.Balance, rt.NetworkVersion()); err != nil {
panic(aerrors.Fatalf("failed to transfer balance to beneficiary actor: %s", err))
}
}
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// Delete the executing actor
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if err := rt.state.DeleteActor(rt.Receiver()); err != nil {
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panic(aerrors.Fatalf("failed to delete actor: %s", err))
}
_ = rt.chargeGasSafe(gasOnActorExec)
}
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func (rt *Runtime) StartSpan(name string) func() {
panic("implement me")
}
func (rt *Runtime) ValidateImmediateCallerIs(as ...address.Address) {
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rt.abortIfAlreadyValidated()
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imm := rt.Caller()
for _, a := range as {
if imm == a {
return
}
}
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rt.Abortf(exitcode.SysErrForbidden, "caller %s is not one of %s", rt.Caller(), as)
}
func (rt *Runtime) Context() context.Context {
return rt.ctx
}
func (rt *Runtime) Abortf(code exitcode.ExitCode, msg string, args ...interface{}) {
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log.Warnf("Abortf: " + fmt.Sprintf(msg, args...))
panic(aerrors.NewfSkip(2, code, msg, args...))
}
func (rt *Runtime) AbortStateMsg(msg string) {
panic(aerrors.NewfSkip(3, 101, msg))
}
func (rt *Runtime) ValidateImmediateCallerType(ts ...cid.Cid) {
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rt.abortIfAlreadyValidated()
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callerCid, ok := rt.GetActorCodeCID(rt.Caller())
if !ok {
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panic(aerrors.Fatalf("failed to lookup code cid for caller"))
}
for _, t := range ts {
if t == callerCid {
return
}
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// this really only for genesis in tests; nv16 will be running on FVM anyway.
if nv := rt.NetworkVersion(); nv >= network.Version16 {
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av, err := actorstypes.VersionForNetwork(nv)
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if err != nil {
panic(aerrors.Fatalf("failed to get actors version for network version %d", nv))
}
name := actors.CanonicalName(builtin.ActorNameByCode(t))
ac, ok := actors.GetActorCodeID(av, name)
if ok && ac == callerCid {
return
}
}
}
rt.Abortf(exitcode.SysErrForbidden, "caller cid type %q was not one of %v", callerCid, ts)
}
func (rt *Runtime) CurrEpoch() abi.ChainEpoch {
return rt.height
}
func (rt *Runtime) Send(to address.Address, method abi.MethodNum, m cbor.Marshaler, value abi.TokenAmount, out cbor.Er) exitcode.ExitCode {
if !rt.allowInternal {
rt.Abortf(exitcode.SysErrorIllegalActor, "runtime.Send() is currently disallowed")
}
var params []byte
if m != nil {
buf := new(bytes.Buffer)
if err := m.MarshalCBOR(buf); err != nil {
rt.Abortf(exitcode.ErrSerialization, "failed to marshal input parameters: %s", err)
}
params = buf.Bytes()
}
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ret, err := rt.internalSend(rt.Receiver(), to, method, value, params)
if err != nil {
if err.IsFatal() {
panic(err)
}
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log.Warnf("vmctx send failed: from: %s to: %s, method: %d: err: %s", rt.Receiver(), to, method, err)
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return err.RetCode()
}
_ = rt.chargeGasSafe(gasOnActorExec)
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if err := out.UnmarshalCBOR(bytes.NewReader(ret)); err != nil {
rt.Abortf(exitcode.ErrSerialization, "failed to unmarshal return value: %s", err)
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}
return 0
}
func (rt *Runtime) internalSend(from, to address.Address, method abi.MethodNum, value types.BigInt, params []byte) ([]byte, aerrors.ActorError) {
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start := build.Clock.Now()
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: from,
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, errSend, subrt := rt.vm.send(ctx, msg, rt, nil, start)
if errSend != nil {
if errRevert := st.Revert(); errRevert != nil {
return nil, aerrors.Escalate(errRevert, "failed to revert state tree after failed subcall")
}
}
if subrt != nil {
rt.numActorsCreated = subrt.numActorsCreated
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rt.executionTrace.Subcalls = append(rt.executionTrace.Subcalls, subrt.executionTrace)
}
return ret, errSend
}
func (rt *Runtime) StateCreate(obj cbor.Marshaler) {
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c := rt.StorePut(obj)
err := rt.stateCommit(EmptyObjectCid, c)
if err != nil {
panic(fmt.Errorf("failed to commit state after creating object: %w", err))
}
}
func (rt *Runtime) StateReadonly(obj cbor.Unmarshaler) {
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act, err := rt.state.GetActor(rt.Receiver())
if err != nil {
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rt.Abortf(exitcode.SysErrorIllegalArgument, "failed to get actor for Readonly state: %s", err)
}
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rt.StoreGet(act.Head, obj)
}
func (rt *Runtime) StateTransaction(obj cbor.Er, f func()) {
if obj == nil {
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rt.Abortf(exitcode.SysErrorIllegalActor, "Must not pass nil to Transaction()")
}
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act, err := rt.state.GetActor(rt.Receiver())
if err != nil {
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rt.Abortf(exitcode.SysErrorIllegalActor, "failed to get actor for Transaction: %s", err)
}
baseState := act.Head
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rt.StoreGet(baseState, obj)
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rt.allowInternal = false
f()
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rt.allowInternal = true
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c := rt.StorePut(obj)
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err = rt.stateCommit(baseState, c)
if err != nil {
panic(fmt.Errorf("failed to commit state after transaction: %w", err))
}
}
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 types.ErrActorNotFound:
return types.NewInt(0), nil
case nil:
return act.Balance, nil
}
}
func (rt *Runtime) stateCommit(oldh, newh cid.Cid) aerrors.ActorError {
// TODO: we can make this more efficient in the future...
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act, err := rt.state.GetActor(rt.Receiver())
if err != nil {
return aerrors.Escalate(err, "failed to get actor to commit state")
}
if act.Head != oldh {
return aerrors.Fatal("failed to update, inconsistent base reference")
}
act.Head = newh
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if err := rt.state.SetActor(rt.Receiver(), act); err != nil {
return aerrors.Fatalf("failed to set actor in commit state: %s", err)
}
return nil
}
func (rt *Runtime) finilizeGasTracing() {
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if EnableDetailedTracing {
if rt.lastGasCharge != nil {
rt.lastGasCharge.TimeTaken = time.Since(rt.lastGasChargeTime)
}
}
}
// ChargeGas is spec actors function
func (rt *Runtime) ChargeGas(name string, compute int64, virtual int64) {
err := rt.chargeGasInternal(newGasCharge(name, compute, 0).WithVirtual(virtual, 0), 1)
if err != nil {
panic(err)
}
}
func (rt *Runtime) chargeGas(gas GasCharge) {
err := rt.chargeGasInternal(gas, 1)
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if err != nil {
panic(err)
}
}
func (rt *Runtime) chargeGasFunc(skip int) func(GasCharge) {
return func(gas GasCharge) {
err := rt.chargeGasInternal(gas, 1+skip)
if err != nil {
panic(err)
}
}
}
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func (rt *Runtime) chargeGasInternal(gas GasCharge, skip int) aerrors.ActorError {
toUse := gas.Total()
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if EnableDetailedTracing {
now := build.Clock.Now()
if rt.lastGasCharge != nil {
rt.lastGasCharge.TimeTaken = now.Sub(rt.lastGasChargeTime)
}
gasTrace := types.GasTrace{
Name: gas.Name,
TotalGas: toUse,
ComputeGas: gas.ComputeGas,
StorageGas: gas.StorageGas,
}
rt.executionTrace.GasCharges = append(rt.executionTrace.GasCharges, &gasTrace)
rt.lastGasChargeTime = now
rt.lastGasCharge = &gasTrace
}
// overflow safe
if rt.gasUsed > rt.gasAvailable-toUse {
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gasUsed := rt.gasUsed
rt.gasUsed = rt.gasAvailable
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return aerrors.Newf(exitcode.SysErrOutOfGas, "not enough gas: used=%d, available=%d, use=%d",
gasUsed, rt.gasAvailable, toUse)
}
rt.gasUsed += toUse
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return nil
}
func (rt *Runtime) chargeGasSafe(gas GasCharge) aerrors.ActorError {
return rt.chargeGasInternal(gas, 1)
}
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func (rt *Runtime) Pricelist() Pricelist {
return rt.pricelist
}
func (rt *Runtime) incrementNumActorsCreated() {
rt.numActorsCreated++
}
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func (rt *Runtime) abortIfAlreadyValidated() {
if rt.callerValidated {
rt.Abortf(exitcode.SysErrorIllegalActor, "Method must validate caller identity exactly once")
}
rt.callerValidated = true
}
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func (rt *Runtime) Log(level rtt.LogLevel, msg string, args ...interface{}) {
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switch level {
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case rtt.DEBUG:
actorLog.Debugf(msg, args...)
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case rtt.INFO:
actorLog.Infof(msg, args...)
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case rtt.WARN:
actorLog.Warnf(msg, args...)
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case rtt.ERROR:
actorLog.Errorf(msg, args...)
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}
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}