Add information about internal message executions to SimulationResult

- The VM now tracks a list of ExecutionResults to keep track of internal messages

api/api_full.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"context"
+	"github.com/filecoin-project/lotus/chain/vm"
 	"time"
 
 	"github.com/filecoin-project/go-address"
@@ -274,6 +275,7 @@ type RetrievalOrder struct {
 type InvocResult struct {
 	Msg *types.Message
 	MsgRct *types.MessageReceipt
+	InternalExecutions []*vm.ExecutionResult
 	Error   string
 }
 

chain/stmgr/call.go

@@ -60,10 +60,12 @@ func (sm *StateManager) CallRaw(ctx context.Context, msg *types.Message, bstate
 		errs = ret.ActorErr.Error()
 		log.Warnf("chain call failed: %s", ret.ActorErr)
 	}
+
 	return &api.InvocResult{
-		Msg: 		msg,
+		Msg: 			msg,
 		MsgRct: 	&ret.MessageReceipt,
-		Error:  	errs,
+		InternalExecutions: ret.InternalExecutions,
+		Error:          	errs,
 	}, nil
 
 }

chain/vm/vm.go

@@ -43,6 +43,12 @@ const (
 	outOfGasErrCode = 200
 )
 
+type ExecutionResult struct {
+	Msg		*types.Message
+	MsgRct	*types.MessageReceipt
+	Error   string
+}
+
 type VMContext struct {
 	ctx context.Context
 
@@ -62,6 +68,8 @@ type VMContext struct {
 
 	// address that started invoke chain
 	origin address.Address
+
+	internalExecutions []*ExecutionResult
 }
 
 // Message is the message that kicked off the current invocation
@@ -153,6 +161,24 @@ func (vmc *VMContext) Send(to address.Address, method uint64, value types.BigInt
 	}
 
 	ret, err, _ := vmc.vm.send(ctx, msg, vmc, 0)
+
+	mr := types.MessageReceipt{
+		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
 }
 
@@ -341,6 +367,7 @@ type Rand interface {
 type ApplyRet struct {
 	types.MessageReceipt
 	ActorErr aerrors.ActorError
+	InternalExecutions []*ExecutionResult
 }
 
 func (vm *VM) send(ctx context.Context, msg *types.Message, parent *VMContext,
@@ -512,6 +539,7 @@ func (vm *VM) ApplyMessage(ctx context.Context, msg *types.Message) (*ApplyRet,
 			GasUsed:  gasUsed,
 		},
 		ActorErr: actorErr,
+		InternalExecutions: vmctx.internalExecutions,
 	}, nil
 }
 

node/impl/full/state.go

@@ -174,9 +174,10 @@ func (a *StateAPI) StateReplay(ctx context.Context, tsk types.TipSetKey, mc cid.
 	}
 
 	return &api.InvocResult{
-		Msg:    m,
-		MsgRct: &r.MessageReceipt,
-		Error:	errstr,
+		Msg:     		m,
+		MsgRct: 	&r.MessageReceipt,
+		InternalExecutions: r.InternalExecutions,
+		Error:   			errstr,
 	}, nil
 }