forked from centrifuge/go-substrate-rpc-client
/
metadataV12.go
126 lines (113 loc) · 2.94 KB
/
metadataV12.go
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package types
import (
"fmt"
"strings"
"github.com/snowfork/go-substrate-rpc-client/v4/scale"
)
// Modelled after packages/types/src/Metadata/v11/toV12.ts
type MetadataV12 struct {
Modules []ModuleMetadataV12
Extrinsic ExtrinsicV11
}
func (m *MetadataV12) Decode(decoder scale.Decoder) error {
err := decoder.Decode(&m.Modules)
if err != nil {
return err
}
return decoder.Decode(&m.Extrinsic)
}
func (m MetadataV12) Encode(encoder scale.Encoder) error {
err := encoder.Encode(m.Modules)
if err != nil {
return err
}
return encoder.Encode(m.Extrinsic)
}
func (m *MetadataV12) FindCallIndex(call string) (CallIndex, error) {
s := strings.Split(call, ".")
for _, mod := range m.Modules {
if !mod.HasCalls {
continue
}
if string(mod.Name) != s[0] {
continue
}
for ci, f := range mod.Calls {
if string(f.Name) == s[1] {
return CallIndex{mod.Index, uint8(ci)}, nil
}
}
return CallIndex{}, fmt.Errorf("method %v not found within module %v for call %v", s[1], mod.Name, call)
}
return CallIndex{}, fmt.Errorf("module %v not found in metadata for call %v", s[0], call)
}
func (m *MetadataV12) FindEventNamesForEventID(eventID EventID) (Text, Text, error) {
for _, mod := range m.Modules {
if !mod.HasEvents {
continue
}
if mod.Index != eventID[0] {
continue
}
if int(eventID[1]) >= len(mod.Events) {
return "", "", fmt.Errorf("event index %v for module %v out of range", eventID[1], mod.Name)
}
return mod.Name, mod.Events[eventID[1]].Name, nil
}
return "", "", fmt.Errorf("module index %v out of range", eventID[0])
}
func (m *MetadataV12) FindStorageEntryMetadata(module string, fn string) (StorageEntryMetadata, error) {
for _, mod := range m.Modules {
if !mod.HasStorage {
continue
}
if string(mod.Storage.Prefix) != module {
continue
}
for _, s := range mod.Storage.Items {
if string(s.Name) != fn {
continue
}
return s, nil
}
return nil, fmt.Errorf("storage %v not found within module %v", fn, module)
}
return nil, fmt.Errorf("module %v not found in metadata", module)
}
func (m *MetadataV12) FindConstantValue(module Text, constant Text) ([]byte, error) {
for _, mod := range m.Modules {
if mod.Name == module {
value, err := mod.FindConstantValue(constant)
if err == nil {
return value, nil
}
}
}
return nil, fmt.Errorf("could not find constant %s.%s", module, constant)
}
func (m *MetadataV12) ExistsModuleMetadata(module string) bool {
for _, mod := range m.Modules {
if string(mod.Name) == module {
return true
}
}
return false
}
type ModuleMetadataV12 struct {
ModuleMetadataV10
Index uint8
}
func (m *ModuleMetadataV12) Decode(decoder scale.Decoder) error {
err := decoder.Decode(&m.ModuleMetadataV10)
if err != nil {
return err
}
return decoder.Decode(&m.Index)
}
func (m ModuleMetadataV12) Encode(encoder scale.Encoder) error {
err := encoder.Encode(&m.ModuleMetadataV10)
if err != nil {
return err
}
return encoder.Encode(m.Index)
}