feat: evm: align events implementation with FIP-0049 and FIP-0054

app/submodule/eth/eth_api.go

@@ -1273,7 +1273,7 @@ func parseEthTopics(topics types.EthTopicSpec) (map[string][][]byte, error) {
 			continue
 		}
 		// Ethereum topics are emitted using `LOG{0..4}` opcodes resulting in topics1..4
-		key := fmt.Sprintf("topic%d", idx+1)
+		key := fmt.Sprintf("t%d", idx+1)
 		for _, v := range vals {
 			encodedVal, err := cborEncodeTopicValue(v[:])
 			if err != nil {

app/submodule/eth/eth_event_api.go

@@ -22,7 +22,6 @@ import (
 	"github.com/google/uuid"
 	"github.com/ipfs/go-cid"
 	"github.com/multiformats/go-varint"
-	"golang.org/x/xerrors"
 )
 
 const ChainHeadConfidence = 1
@@ -434,7 +433,7 @@ func (e *ethEventAPI) EthSubscribe(ctx context.Context, p jsonrpc.RawParams) (ty
 
 	ethCb, ok := jsonrpc.ExtractReverseClient[v1.EthSubscriberMethods](ctx)
 	if !ok {
-		return types.EthSubscriptionID{}, xerrors.Errorf("connection doesn't support callbacks")
+		return types.EthSubscriptionID{}, fmt.Errorf("connection doesn't support callbacks")
 	}
 
 	sub, err := e.SubManager.StartSubscription(e.SubscribtionCtx, ethCb.EthSubscription)
@@ -469,7 +468,7 @@ func (e *ethEventAPI) EthSubscribe(ctx context.Context, p jsonrpc.RawParams) (ty
 			for _, ea := range params.Params.Address {
 				a, err := ea.ToFilecoinAddress()
 				if err != nil {
-					return types.EthSubscriptionID{}, xerrors.Errorf("invalid address %x", ea)
+					return types.EthSubscriptionID{}, fmt.Errorf("invalid address %x", ea)
 				}
 				addresses = append(addresses, a)
 			}

app/submodule/syncer/syncer_submodule.go

@@ -122,6 +122,7 @@ func NewSyncerSubmodule(ctx context.Context,
 		chn.SystemCall,
 		circulatingSupplyCalculator,
 		config.Repo().Config().NetworkParams.ActorDebugging,
+		config.Repo().Config().FevmConfig.EnableEthRPC,
 	)
 
 	stmgr := statemanger.NewStateManger(chn.ChainReader, nodeConsensus, rnd,

pkg/consensus/expected.go

@@ -129,6 +129,7 @@ type Expected struct {
 	blockValidator *BlockValidator
 
 	actorDebugging bool
+	returnEvents   bool
 }
 
 // NewExpected is the constructor for the Expected consenus.Protocol module.
@@ -143,6 +144,7 @@ func NewExpected(cs cbor.IpldStore,
 	syscalls vm.SyscallsImpl,
 	circulatingSupplyCalculator chain.ICirculatingSupplyCalcualtor,
 	actorDebugging bool,
+	returnEvents bool,
 ) *Expected {
 	processor := NewDefaultProcessor(syscalls, circulatingSupplyCalculator)
 	return &Expected{
@@ -157,6 +159,7 @@ func NewExpected(cs cbor.IpldStore,
 		gasPirceSchedule: gasPirceSchedule,
 		blockValidator:   blockValidator,
 		actorDebugging:   actorDebugging,
+		returnEvents:     returnEvents,
 	}
 }
 
@@ -215,6 +218,7 @@ func (c *Expected) RunStateTransition(ctx context.Context, ts *types.TipSet, cb
 		TipSetGetter:        vmcontext.TipSetGetterForTipset(c.chainState.GetTipSetByHeight, ts),
 		Tracing:             false,
 		ActorDebugging:      c.actorDebugging,
+		ReturnEvents:        c.returnEvents,
 	}
 
 	var parentEpoch abi.ChainEpoch

pkg/consensus/processor.go

@@ -11,6 +11,7 @@ import (
 	"github.com/filecoin-project/venus/venus-shared/actors/builtin/reward"
 
 	"github.com/filecoin-project/go-address"
+	amt4 "github.com/filecoin-project/go-amt-ipld/v4"
 	"github.com/filecoin-project/go-state-types/abi"
 	"github.com/filecoin-project/go-state-types/big"
 	"github.com/filecoin-project/specs-actors/v7/actors/builtin"
@@ -19,7 +20,9 @@ import (
 	"github.com/filecoin-project/venus/venus-shared/actors/builtin/cron"
 	"github.com/filecoin-project/venus/venus-shared/types"
 	"github.com/ipfs/go-cid"
+	cbor "github.com/ipfs/go-ipld-cbor"
 	logging "github.com/ipfs/go-log/v2"
+	cbg "github.com/whyrusleeping/cbor-gen"
 )
 
 var processLog = logging.Logger("process block")
@@ -71,8 +74,12 @@ func (p *DefaultProcessor) ApplyBlocks(ctx context.Context,
 	cb vm.ExecCallBack,
 ) (cid.Cid, []types.MessageReceipt, error) {
 	toProcessTipset := time.Now()
-	var receipts []types.MessageReceipt
-	var err error
+	var (
+		receipts      []types.MessageReceipt
+		err           error
+		storingEvents = vmOpts.ReturnEvents
+		events        [][]types.Event
+	)
 
 	makeVMWithBaseStateAndEpoch := func(base cid.Cid, e abi.ChainEpoch) (vm.Interface, error) {
 		vmOpt := vm.VmOption{
@@ -168,6 +175,12 @@ func (p *DefaultProcessor) ApplyBlocks(ctx context.Context,
 			minerPenaltyTotal = big.Add(minerPenaltyTotal, ret.OutPuts.MinerPenalty)
 			minerGasRewardTotal = big.Add(minerGasRewardTotal, ret.OutPuts.MinerTip)
 			receipts = append(receipts, ret.Receipt)
+
+			if storingEvents {
+				// Appends nil when no events are returned to preserve positional alignment.
+				events = append(events, ret.Events)
+			}
+
 			if cb != nil {
 				if err := cb(mcid, m.VMMessage(), ret); err != nil {
 					return cid.Undef, nil, err
@@ -210,6 +223,23 @@ func (p *DefaultProcessor) ApplyBlocks(ctx context.Context,
 		}
 	}
 
+	// Slice will be empty if not storing events.
+	for i, evs := range events {
+		if len(evs) == 0 {
+			continue
+		}
+		switch root, err := storeEventsAMT(ctx, vmOpts.Bsstore, evs); {
+		case err != nil:
+			return cid.Undef, nil, fmt.Errorf("failed to store events amt: %w", err)
+		case i >= len(receipts):
+			return cid.Undef, nil, fmt.Errorf("assertion failed: receipt and events array lengths inconsistent")
+		case receipts[i].EventsRoot == nil:
+			return cid.Undef, nil, fmt.Errorf("assertion failed: VM returned events with no events root")
+		case root != *receipts[i].EventsRoot:
+			return cid.Undef, nil, fmt.Errorf("assertion failed: returned events AMT root does not match derived")
+		}
+	}
+
 	processLog.Debugf("process cron: %v", time.Since(toProcessCron).Milliseconds())
 
 	root, err := vm.Flush(ctx)
@@ -263,3 +293,12 @@ func makeBlockRewardMessage(blockMiner address.Address,
 		Params:     buf.Bytes(),
 	}
 }
+
+func storeEventsAMT(ctx context.Context, bs cbor.IpldBlockstore, events []types.Event) (cid.Cid, error) {
+	cst := cbor.NewCborStore(bs)
+	objs := make([]cbg.CBORMarshaler, len(events))
+	for i := 0; i < len(events); i++ {
+		objs[i] = &events[i]
+	}
+	return amt4.FromArray(ctx, cst, objs, amt4.UseTreeBitWidth(types.EventAMTBitwidth))
+}

pkg/fvm/fvm.go

@@ -303,6 +303,9 @@ func (x *FvmExtern) workerKeyAtLookback(ctx context.Context, minerID address.Add
 type FVM struct {
 	fvm *ffi.FVM
 	nv  network.Version
+
+	// returnEvents specifies whether to parse and return events when applying messages.
+	returnEvents bool
 }
 
 func defaultFVMOpts(ctx context.Context, opts *vm.VmOption) (*ffi.FVMOpts, error) {
@@ -350,8 +353,9 @@ func NewFVM(ctx context.Context, opts *vm.VmOption) (*FVM, error) {
 	}
 
 	return &FVM{
-		fvm: fvm,
-		nv:  opts.NetworkVersion,
+		fvm:          fvm,
+		nv:           opts.NetworkVersion,
+		returnEvents: opts.ReturnEvents,
 	}, nil
 }
 
@@ -452,8 +456,9 @@ func NewDebugFVM(ctx context.Context, opts *vm.VmOption) (*FVM, error) {
 	}
 
 	return &FVM{
-		fvm: fvm,
-		nv:  opts.NetworkVersion,
+		fvm:          fvm,
+		nv:           opts.NetworkVersion,
+		returnEvents: opts.ReturnEvents,
 	}, nil
 }
 
@@ -506,7 +511,7 @@ func (fvm *FVM) ApplyMessage(ctx context.Context, cmsg types.ChainMsg) (*vm.Ret,
 		et.Error = aerr.Error()
 	}
 
-	return &vm.Ret{
+	applyRet := &vm.Ret{
 		Receipt: receipt,
 		OutPuts: gas.GasOutputs{
 			BaseFeeBurn:        ret.BaseFeeBurn,
@@ -522,7 +527,16 @@ func (fvm *FVM) ApplyMessage(ctx context.Context, cmsg types.ChainMsg) (*vm.Ret,
 			ExecutionTrace: et,
 		},
 		Duration: duration,
-	}, nil
+	}
+
+	if fvm.returnEvents && len(ret.EventsBytes) > 0 {
+		applyRet.Events, err = types.DecodeEvents(ret.EventsBytes)
+		if err != nil {
+			return nil, fmt.Errorf("failed to decode events returned by the FVM: %w", err)
+		}
+	}
+
+	return applyRet, nil
 }
 
 func (fvm *FVM) ApplyImplicitMessage(ctx context.Context, cmsg types.ChainMsg) (*vm.Ret, error) {
@@ -584,6 +598,13 @@ func (fvm *FVM) ApplyImplicitMessage(ctx context.Context, cmsg types.ChainMsg) (
 		Duration: duration,
 	}
 
+	if fvm.returnEvents && len(ret.EventsBytes) > 0 {
+		applyRet.Events, err = types.DecodeEvents(ret.EventsBytes)
+		if err != nil {
+			return nil, fmt.Errorf("failed to decode events returned by the FVM: %w", err)
+		}
+	}
+
 	if ret.ExitCode != 0 {
 		return applyRet, fmt.Errorf("implicit message failed with exit code: %d and error: %w", ret.ExitCode, applyRet.ActorErr)
 	}

pkg/vm/vmcontext/types.go

@@ -51,6 +51,8 @@ type VmOption struct { //nolint
 	Tracing              bool
 
 	ActorDebugging bool
+	// ReturnEvents decodes and returns emitted events.
+	ReturnEvents bool
 }
 
 type ILookBack interface {
@@ -93,6 +95,7 @@ type Ret struct {
 	Receipt    types.MessageReceipt
 	ActorErr   error
 	Duration   time.Duration
+	Events     []types.Event
 }
 
 // Failure returns with a non-zero exit code.