native: support StorageFee

pkg/core/interop/context.go

@@ -91,6 +91,7 @@ type MethodAndPrice struct {
 	Func          Method
 	MD            *manifest.Method
 	CPUFee        int64
+	StorageFee    int64
 	SyscallOffset int
 	RequiredFlags callflag.CallFlag
 }

pkg/core/native/interop.go

@@ -34,7 +34,9 @@ func Call(ic *interop.Context) error {
 		return fmt.Errorf("missing call flags for native %d `%s` operation call: %05b vs %05b",
 			version, m.MD.Name, ic.VM.Context().GetCallFlags(), m.RequiredFlags)
 	}
-	if !ic.VM.AddGas(m.CPUFee * ic.Chain.GetPolicer().GetBaseExecFee()) {
+	invokeFee := m.CPUFee*ic.Chain.GetPolicer().GetBaseExecFee() +
+		m.StorageFee*ic.Chain.GetPolicer().GetStoragePrice()
+	if !ic.VM.AddGas(invokeFee) {
 		return errors.New("gas limit exceeded")
 	}
 	ctx := ic.VM.Context()

pkg/core/native/name_service.go

@@ -136,6 +136,7 @@ func newNameService() *NameService {
 		manifest.NewParameter("name", smartcontract.StringType),
 		manifest.NewParameter("admin", smartcontract.Hash160Type))
 	md = newMethodAndPrice(n.setAdmin, 1<<15, callflag.States)
+	md.StorageFee = 20
 	n.AddMethod(md, desc)
 
 	desc = newDescriptor("setRecord", smartcontract.VoidType,
@@ -143,6 +144,7 @@ func newNameService() *NameService {
 		manifest.NewParameter("type", smartcontract.IntegerType),
 		manifest.NewParameter("data", smartcontract.StringType))
 	md = newMethodAndPrice(n.setRecord, 1<<15, callflag.States)
+	md.StorageFee = 200
 	n.AddMethod(md, desc)
 
 	desc = newDescriptor("getRecord", smartcontract.StringType,

pkg/core/native/native_nep17.go

@@ -72,6 +72,7 @@ func newNEP17Native(name string, id int32) *nep17TokenNative {
 		append(transferParams, manifest.NewParameter("data", smartcontract.AnyType))...,
 	)
 	md = newMethodAndPrice(n.Transfer, 1<<17, callflag.States|callflag.AllowCall|callflag.AllowNotify)
+	md.StorageFee = 50
 	n.AddMethod(md, desc)
 
 	n.AddEvent("Transfer", transferParams...)

pkg/core/native/nonfungible.go

@@ -108,6 +108,7 @@ func newNonFungible(name string, id int32, symbol string, decimals byte) *nonfun
 		manifest.NewParameter("to", smartcontract.Hash160Type),
 		manifest.NewParameter("tokenId", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(n.transfer, 1<<17, callflag.States|callflag.AllowNotify)
+	md.StorageFee = 50
 	n.AddMethod(md, desc)
 
 	n.AddEvent("Transfer",

pkg/core/native_contract_test.go

@@ -56,7 +56,10 @@ func (bc *Blockchain) registerNative(c interop.Contract) {
 	bc.contracts.Contracts = append(bc.contracts.Contracts, c)
 }
 
-const testSumCPUFee = 1 << 15 // same as contract.Call
+const (
+	testSumCPUFee     = 1 << 15 // same as contract.Call
+	testSumStorageFee = 200
+)
 
 func newTestNative() *testNative {
 	tn := &testNative{
@@ -77,6 +80,7 @@ func newTestNative() *testNative {
 	md := &interop.MethodAndPrice{
 		Func:          tn.sum,
 		CPUFee:        testSumCPUFee,
+		StorageFee:    testSumStorageFee,
 		RequiredFlags: callflag.NoneFlag,
 	}
 	tn.meta.AddMethod(md, desc)
@@ -183,6 +187,7 @@ func TestNativeContract_Invoke(t *testing.T) {
 
 	// System.Contract.Call + "sum" itself + opcodes for pushing arguments.
 	price := int64(testSumCPUFee * chain.GetBaseExecFee() * 2)
+	price += testSumStorageFee * chain.GetStoragePrice()
 	price += 3 * fee.Opcode(chain.GetBaseExecFee(), opcode.PUSHINT8)
 	price += 2 * fee.Opcode(chain.GetBaseExecFee(), opcode.SYSCALL, opcode.PUSHDATA1, opcode.PUSHINT8)
 	price += fee.Opcode(chain.GetBaseExecFee(), opcode.PACK)