Update metadatav10 (#51)

* Add support for metadata v10

* Fix linting errors

Author: philipstanislaus

.golangci.yml

@@ -35,7 +35,7 @@ run:
   # no need to include all autogenerated files, we confidently recognize
   # autogenerated files. If it's not please let us know.
   skip-files:
-    - types/metadata_examplary.go
+    - types/metadataV[0-9]+_examplary.go
   #   - ".*\\.my\\.go$"
   #   - lib/bad.go
 
@@ -114,6 +114,12 @@ issues:
     - path: types/uint.go
       linters:
         - dupl
+    - path: types/metadataV8.go
+      linters:
+        - dupl
+    - path: types/metadataV10.go
+      linters:
+        - dupl
     - path: types/option_int.go
       linters:
         - dupl
@@ -126,12 +132,6 @@ issues:
     - path: types/storage_data_raw_test.go
       linters:
         - dupl
-    - path: types/metadata_examplary.go
-      text: ".*"
-      # linters:
-      #   - dupl
-      #   - golint
-      #   - misspell
     - path: doc.go
       linters:
         - lll

Makefile

@@ -50,7 +50,7 @@ run-substrate-docker: 		## runs the Substrate 1.0 Default Docker image, this can
 	docker run -p 9933:9933 -p 9944:9944 -p 30333:30333 parity/substrate:latest-v1.0 --dev --rpc-external --ws-external
 
 run-substrate-docker-v2: 	## runs the Substrate 2.0 Default Docker image, this can be used to run the tests
-	docker run -p 9933:9933 -p 9944:9944 -p 30333:30333 parity/substrate:2.0.0-5dece71 --dev --rpc-external --ws-external
+	docker run -p 9933:9933 -p 9944:9944 -p 30333:30333 parity/substrate:2.0.0-ddb309ae --dev --rpc-external --ws-external
 
 help: 				## shows this help
 	@sed -ne '/@sed/!s/## //p' $(MAKEFILE_LIST)

types/metadata.go

@@ -27,16 +27,18 @@ const MagicNumber uint32 = 0x6174656d
 // Modelled after https://github.com/paritytech/substrate/blob/v1.0.0rc2/srml/metadata/src/lib.rs
 
 type Metadata struct {
-	MagicNumber  uint32
-	Version      uint8
-	IsMetadataV4 bool
-	AsMetadataV4 MetadataV4
-	IsMetadataV7 bool
-	AsMetadataV7 MetadataV7
-	IsMetadataV8 bool
-	AsMetadataV8 MetadataV8
-	IsMetadataV9 bool
-	AsMetadataV9 MetadataV9
+	MagicNumber   uint32
+	Version       uint8
+	IsMetadataV4  bool
+	AsMetadataV4  MetadataV4
+	IsMetadataV7  bool
+	AsMetadataV7  MetadataV7
+	IsMetadataV8  bool
+	AsMetadataV8  MetadataV8
+	IsMetadataV9  bool
+	AsMetadataV9  MetadataV9
+	IsMetadataV10 bool
+	AsMetadataV10 MetadataV10
 }
 
 func NewMetadataV4() *Metadata {
@@ -55,6 +57,10 @@ func NewMetadataV9() *Metadata {
 	return &Metadata{Version: 9, IsMetadataV9: true, AsMetadataV9: MetadataV9{make([]ModuleMetadataV8, 0)}}
 }
 
+func NewMetadataV10() *Metadata {
+	return &Metadata{Version: 10, IsMetadataV10: true, AsMetadataV10: MetadataV10{make([]ModuleMetadataV10, 0)}}
+}
+
 func (m *Metadata) Decode(decoder scale.Decoder) error {
 	err := decoder.Decode(&m.MagicNumber)
 	if err != nil {
@@ -82,6 +88,9 @@ func (m *Metadata) Decode(decoder scale.Decoder) error {
 	case 9:
 		m.IsMetadataV9 = true
 		err = decoder.Decode(&m.AsMetadataV9)
+	case 10:
+		m.IsMetadataV10 = true
+		err = decoder.Decode(&m.AsMetadataV10)
 	default:
 		return fmt.Errorf("unsupported metadata version %v", m.Version)
 	}
@@ -109,6 +118,8 @@ func (m Metadata) Encode(encoder scale.Encoder) error {
 		err = encoder.Encode(m.AsMetadataV8)
 	case 9:
 		err = encoder.Encode(m.AsMetadataV9)
+	case 10:
+		err = encoder.Encode(m.AsMetadataV10)
 	default:
 		return fmt.Errorf("unsupported metadata version %v", m.Version)
 	}
@@ -126,6 +137,8 @@ func (m *Metadata) FindCallIndex(call string) (CallIndex, error) {
 		return m.AsMetadataV8.FindCallIndex(call)
 	case m.IsMetadataV9:
 		return m.AsMetadataV9.FindCallIndex(call)
+	case m.IsMetadataV10:
+		return m.AsMetadataV10.FindCallIndex(call)
 	default:
 		return CallIndex{}, fmt.Errorf("unsupported metadata version")
 	}
@@ -141,6 +154,8 @@ func (m *Metadata) FindEventNamesForEventID(eventID EventID) (Text, Text, error)
 		return m.AsMetadataV8.FindEventNamesForEventID(eventID)
 	case m.IsMetadataV9:
 		return m.AsMetadataV9.FindEventNamesForEventID(eventID)
+	case m.IsMetadataV10:
+		return m.AsMetadataV10.FindEventNamesForEventID(eventID)
 	default:
 		return "", "", fmt.Errorf("unsupported metadata version")
 	}
@@ -156,6 +171,8 @@ func (m *Metadata) FindStorageEntryMetadata(module string, fn string) (StorageEn
 		return m.AsMetadataV8.FindStorageEntryMetadata(module, fn)
 	case m.IsMetadataV9:
 		return m.AsMetadataV9.FindStorageEntryMetadata(module, fn)
+	case m.IsMetadataV10:
+		return m.AsMetadataV10.FindStorageEntryMetadata(module, fn)
 	default:
 		return nil, fmt.Errorf("unsupported metadata version")
 	}