feat(wasmer): get and cache state version in instance context

dot/core/messages_integration_test.go

@@ -41,8 +41,7 @@ func createExtrinsic(t *testing.T, rt runtime.Instance, genHash common.Hash, non
 	err = ctypes.Decode(decoded, meta)
 	require.NoError(t, err)
 
-	rv, err := rt.Version()
-	require.NoError(t, err)
+	rv := rt.Version()
 
 	c, err := ctypes.NewCall(meta, "System.remark", []byte{0xab, 0xcd})
 	require.NoError(t, err)

dot/core/service.go

@@ -478,7 +478,7 @@ func (s *Service) GetRuntimeVersion(bhash *common.Hash) (
 	}
 
 	rt.SetContextStorage(ts)
-	return rt.Version()
+	return rt.Version(), nil
 }
 
 // HandleSubmittedExtrinsic is used to send a Transaction message containing a Extrinsic @ext

dot/core/service_integration_test.go

@@ -522,8 +522,7 @@ func TestService_GetRuntimeVersion(t *testing.T) {
 	rt, err := s.blockState.GetRuntime(nil)
 	require.NoError(t, err)
 
-	rtExpected, err := rt.Version()
-	require.NoError(t, err)
+	rtExpected := rt.Version()
 
 	rtv, err := s.GetRuntimeVersion(nil)
 	require.NoError(t, err)
@@ -577,8 +576,7 @@ func TestService_HandleRuntimeChanges(t *testing.T) {
 	rt, err := s.blockState.GetRuntime(nil)
 	require.NoError(t, err)
 
-	v, err := rt.Version()
-	require.NoError(t, err)
+	v := rt.Version()
 
 	currSpecVersion := v.SpecVersion     // genesis runtime version.
 	hash := s.blockState.BestBlockHash() // genesisHash
@@ -613,8 +611,7 @@ func TestService_HandleRuntimeChanges(t *testing.T) {
 	parentRt, err := s.blockState.GetRuntime(&hash)
 	require.NoError(t, err)
 
-	v, err = parentRt.Version()
-	require.NoError(t, err)
+	v = parentRt.Version()
 	require.Equal(t, v.SpecVersion, currSpecVersion)
 
 	bhash1 := newBlock1.Header.Hash()
@@ -635,15 +632,13 @@ func TestService_HandleRuntimeChanges(t *testing.T) {
 	rt, err = s.blockState.GetRuntime(&bhash1)
 	require.NoError(t, err)
 
-	v, err = rt.Version()
-	require.NoError(t, err)
+	v = rt.Version()
 	require.Equal(t, v.SpecVersion, currSpecVersion)
 
 	rt, err = s.blockState.GetRuntime(&rtUpdateBhash)
 	require.NoError(t, err)
 
-	v, err = rt.Version()
-	require.NoError(t, err)
+	v = rt.Version()
 	require.Equal(t, v.SpecVersion, updatedSpecVersion)
 }
 

dot/state/block.go

@@ -597,7 +597,7 @@ func (bs *BlockState) HandleRuntimeChanges(newState *rtstorage.TrieState,
 		}
 
 		// only update runtime during code substitution if runtime SpecVersion is updated
-		previousVersion, _ := rt.Version()
+		previousVersion := rt.Version()
 		if previousVersion.SpecVersion == newVersion.SpecVersion {
 			logger.Info("not upgrading runtime code during code substitution")
 			bs.StoreRuntime(bHash, rt)
@@ -633,10 +633,7 @@ func (bs *BlockState) HandleRuntimeChanges(newState *rtstorage.TrieState,
 		return fmt.Errorf("failed to update code substituted block hash: %w", err)
 	}
 
-	newVersion, err := rt.Version()
-	if err != nil {
-		return fmt.Errorf("failed to retrieve runtime version: %w", err)
-	}
+	newVersion := rt.Version()
 	go bs.notifyRuntimeUpdated(newVersion)
 	return nil
 }

lib/babe/build_integration_test.go

@@ -273,8 +273,7 @@ func TestBuildAndApplyExtrinsic(t *testing.T) {
 	err = ctypes.Decode(decoded, meta)
 	require.NoError(t, err)
 
-	rv, err := rt.Version()
-	require.NoError(t, err)
+	rv := rt.Version()
 
 	bob, err := ctypes.NewMultiAddressFromHexAccountID(
 		"0x90b5ab205c6974c9ea841be688864633dc9ca8a357843eeacf2314649965fe22")

lib/runtime/interface.go

@@ -25,7 +25,9 @@ type Instance interface {
 	SetContextStorage(s Storage) // used to set the TrieState before a runtime call
 
 	GetCodeHash() common.Hash
-	Version() (Version, error)
+	// Version returns the version from the runtime.
+	// This should return the cached version and be cheap to execute.
+	Version() (version Version)
 	Metadata() ([]byte, error)
 	BabeConfiguration() (*types.BabeConfiguration, error)
 	GrandpaAuthorities() ([]types.Authority, error)

lib/runtime/test_helpers.go

@@ -211,7 +211,7 @@ func NewTestExtrinsic(t *testing.T, rt Instance, genHash, blockHash common.Hash,
 	err = ctypes.Decode(decoded, meta)
 	require.NoError(t, err)
 
-	rv, err := rt.Version()
+	rv := rt.Version()
 	require.NoError(t, err)
 
 	c, err := ctypes.NewCall(meta, call, args...)

lib/runtime/types.go

@@ -56,6 +56,7 @@ type Context struct {
 	Transaction     TransactionState
 	SigVerifier     *crypto.SignatureVerifier
 	OffchainHTTPSet *offchain.HTTPSet
+	Version         Version
 }
 
 // NewValidateTransactionError returns an error based on a return value from TaggedTransactionQueueValidateTransaction

lib/runtime/version.go

@@ -26,6 +26,7 @@ type Version struct {
 	ImplVersion        uint32
 	APIItems           []APIItem
 	TransactionVersion uint32
+	StateVersion       uint32
 }
 
 var (
@@ -63,6 +64,7 @@ func DecodeVersion(encoded []byte) (version Version, err error) {
 
 	optionalFields := [...]namedValue{
 		{name: "transaction version", value: &version.TransactionVersion},
+		{name: "state version", value: &version.StateVersion},
 	}
 	for _, optionalField := range optionalFields {
 		err = decoder.Decode(optionalField.value)

lib/runtime/version_test.go

@@ -57,6 +57,23 @@ func Test_DecodeVersion(t *testing.T) {
 		// 	errWrapped: ErrDecoding,
 		// 	errMessage: "decoding transaction version: could not decode invalid integer",
 		// },
+		// TODO add state version decode error once
+		// https://github.com/ChainSafe/gossamer/pull/2683
+		// is merged.
+		// "state version decode error": {
+		// 	encoded: concatBytes([][]byte{
+		// 		scaleEncode(t, []byte("a")),   // spec name
+		// 		scaleEncode(t, []byte("b")),   // impl name
+		// 		scaleEncode(t, uint32(1)),     // authoring version
+		// 		scaleEncode(t, uint32(2)),     // spec version
+		// 		scaleEncode(t, uint32(3)),     // impl version
+		// 		scaleEncode(t, []APIItem{{}}), // api items
+		// 		scaleEncode(t, uint32(4)),     // transaction version
+		// 		{1, 2, 3},                     // state version
+		// 	}),
+		// 	errWrapped: ErrDecoding,
+		// 	errMessage: "decoding state version: could not decode invalid integer",
+		// },
 		"no optional field set": {
 			encoded: []byte{
 				0x4, 0x1, 0x4, 0x2, 0x3, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0,
@@ -92,6 +109,25 @@ func Test_DecodeVersion(t *testing.T) {
 				TransactionVersion: 7,
 			},
 		},
+		"transaction and state versions set": {
+			encoded: []byte{
+				0x4, 0x1, 0x4, 0x2, 0x3, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0,
+				0x5, 0x0, 0x0, 0x0, 0x4, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
+				0x8, 0x6, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0},
+			version: Version{
+				SpecName:         []byte{1},
+				ImplName:         []byte{2},
+				AuthoringVersion: 3,
+				SpecVersion:      4,
+				ImplVersion:      5,
+				APIItems: []APIItem{{
+					Name: [8]byte{1, 2, 3, 4, 5, 6, 7, 8},
+					Ver:  6,
+				}},
+				TransactionVersion: 7,
+				StateVersion:       4,
+			},
+		},
 	}
 
 	for name, testCase := range testCases {
@@ -130,11 +166,12 @@ func Test_Version_Scale(t *testing.T) {
 					Ver:  6,
 				}},
 				TransactionVersion: 7,
+				StateVersion:       4,
 			},
 			encoding: []byte{
 				0x4, 0x1, 0x4, 0x2, 0x3, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0,
 				0x5, 0x0, 0x0, 0x0, 0x4, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
-				0x8, 0x6, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0},
+				0x8, 0x6, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0},
 			decoded: Version{
 				SpecName:         []byte{1},
 				ImplName:         []byte{2},
@@ -146,6 +183,7 @@ func Test_Version_Scale(t *testing.T) {
 					Ver:  6,
 				}},
 				TransactionVersion: 7,
+				StateVersion:       4,
 			},
 		},
 	}

lib/runtime/wasmer/config.go

@@ -21,4 +21,5 @@ type Config struct {
 	Network     runtime.BasicNetwork
 	Transaction runtime.TransactionState
 	CodeHash    common.Hash
+	testVersion *runtime.Version
 }

lib/runtime/wasmer/exports.go

@@ -30,8 +30,16 @@ func (in *Instance) ValidateTransaction(e types.Extrinsic) (*transaction.Validit
 	return v, err
 }
 
-// Version calls runtime function Core_Version
-func (in *Instance) Version() (version runtime.Version, err error) {
+// Version returns the instance version.
+// This is cheap to call since the instance version is cached.
+// Note the instance version is set at creation and on code update.
+func (in *Instance) Version() (version runtime.Version) {
+	return in.ctx.Version
+}
+
+// version calls runtime function Core_Version and returns the
+// decoded version structure.
+func (in *Instance) version() (version runtime.Version, err error) {
 	res, err := in.Exec(runtime.CoreVersion, []byte{})
 	if err != nil {
 		return version, err

lib/runtime/wasmer/exports_test.go

@@ -30,7 +30,7 @@ func Test_Instance_Version(t *testing.T) {
 	t.Parallel()
 
 	type InstanceVersion interface {
-		Version() (runtime.Version, error)
+		Version() (version runtime.Version)
 	}
 
 	testCases := map[string]struct {
@@ -280,8 +280,7 @@ func Test_Instance_Version(t *testing.T) {
 			t.Parallel()
 
 			instance := testCase.instanceBuilder(t)
-			version, err := instance.Version()
-			require.NoError(t, err)
+			version := instance.Version()
 			assert.Equal(t, testCase.expectedVersion, version)
 		})
 	}

lib/runtime/wasmer/instance.go

@@ -103,11 +103,25 @@ func NewInstance(code []byte, cfg Config) (instance *Instance, err error) {
 	}
 	wasmInstance.SetContextData(runtimeCtx)
 
-	return &Instance{
+	instance = &Instance{
 		vm:       wasmInstance,
 		ctx:      runtimeCtx,
 		codeHash: cfg.CodeHash,
-	}, nil
+	}
+
+	if cfg.testVersion != nil {
+		instance.ctx.Version = *cfg.testVersion
+	} else {
+		instance.ctx.Version, err = instance.version()
+		if err != nil {
+			instance.close()
+			return nil, fmt.Errorf("getting instance version: %w", err)
+		}
+	}
+
+	wasmInstance.SetContextData(instance.ctx)
+
+	return instance, nil
 }
 
 // decompressWasm decompresses a Wasm blob that may or may not be compressed with zstd
@@ -153,6 +167,16 @@ func (in *Instance) UpdateRuntimeCode(code []byte) (err error) {
 
 	in.vm = wasmInstance
 
+	// Find runtime instance version and cache it in its
+	// instance context.
+	version, err := in.version()
+	if err != nil {
+		in.close()
+		return fmt.Errorf("getting instance version: %w", err)
+	}
+	in.ctx.Version = version
+	wasmInstance.SetContextData(in.ctx)
+
 	return nil
 }
 
@@ -168,7 +192,7 @@ func GetRuntimeVersion(code []byte) (version runtime.Version, err error) {
 	}
 	defer instance.Stop()
 
-	version, err = instance.Version()
+	version, err = instance.version()
 	if err != nil {
 		return version, fmt.Errorf("running runtime: %w", err)
 	}