api/command for encoding actor params

node/impl/full/state.go

@@ -3,8 +3,10 @@ package full
 import (
 	"bytes"
 	"context"
+	"encoding/json"
 	"strconv"
 
+	"github.com/filecoin-project/go-state-types/cbor"
 	cid "github.com/ipfs/go-cid"
 	"go.uber.org/fx"
 	"golang.org/x/xerrors"
@@ -497,6 +499,24 @@ func (a *StateAPI) StateDecodeParams(ctx context.Context, toAddr address.Address
 	return paramType, nil
 }
 
+func (a *StateAPI) StateEncodeParams(ctx context.Context, toActCode cid.Cid, method abi.MethodNum, params json.RawMessage) ([]byte, error) {
+	paramType, err := stmgr.GetParamType(toActCode, method)
+	if err != nil {
+		return nil, xerrors.Errorf("getting params type: %w", err)
+	}
+
+	if err := json.Unmarshal(params, &paramType); err != nil {
+		return nil, xerrors.Errorf("json unmarshal: %w", err)
+	}
+
+	var cbb bytes.Buffer
+	if err := paramType.(cbor.Marshaler).MarshalCBOR(&cbb); err != nil {
+		return nil, xerrors.Errorf("cbor marshal: %w", err)
+	}
+
+	return cbb.Bytes(), nil
+}
+
 // This is on StateAPI because miner.Miner requires this, and MinerAPI requires miner.Miner
 func (a *StateAPI) MinerGetBaseInfo(ctx context.Context, maddr address.Address, epoch abi.ChainEpoch, tsk types.TipSetKey) (*api.MiningBaseInfo, error) {
 	// XXX: Gets the state by computing the tipset state, instead of looking at the parent.