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Extend ContractInfo for custom data (#492)
* Extend ContractInfo with custom data * Review comments
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| package codec | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "github.com/cosmos/cosmos-sdk/codec" | ||
| "github.com/cosmos/cosmos-sdk/codec/types" | ||
| "github.com/gogo/protobuf/jsonpb" | ||
| "github.com/gogo/protobuf/proto" | ||
| ) | ||
|
|
||
| var _ codec.Marshaler = (*ProtoCodec)(nil) | ||
|
|
||
| // ProtoCodec that omits empty values. | ||
| // This Marshaler can be used globally when setting up the client context or individually | ||
| // for each command via `clientCtx.WithJSONMarshaler(myMarshaler)`. | ||
| type ProtoCodec struct { | ||
| codec.Marshaler | ||
| interfaceRegistry types.InterfaceRegistry | ||
| } | ||
|
|
||
| func NewProtoCodec(marshaler codec.Marshaler, registry types.InterfaceRegistry) *ProtoCodec { | ||
| return &ProtoCodec{Marshaler: marshaler, interfaceRegistry: registry} | ||
| } | ||
|
|
||
| // MarshalJSON implements JSONMarshaler.MarshalJSON method, | ||
| // it marshals to JSON using proto codec. | ||
| func (pc *ProtoCodec) MarshalJSON(o proto.Message) ([]byte, error) { | ||
| m, ok := o.(codec.ProtoMarshaler) | ||
| if !ok { | ||
| return nil, fmt.Errorf("cannot protobuf JSON encode unsupported type: %T", o) | ||
| } | ||
| return ProtoMarshalJSON(m, pc.interfaceRegistry) | ||
| } | ||
|
|
||
| // MustMarshalJSON implements JSONMarshaler.MustMarshalJSON method, | ||
| // it executes MarshalJSON except it panics upon failure. | ||
| func (pc *ProtoCodec) MustMarshalJSON(o proto.Message) []byte { | ||
| bz, err := pc.MarshalJSON(o) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return bz | ||
| } | ||
|
|
||
| // MarshalInterfaceJSON is a convenience function for proto marshalling interfaces. It | ||
| // packs the provided value in an Any and then marshals it to bytes. | ||
| // NOTE: to marshal a concrete type, you should use MarshalJSON instead | ||
| func (pc *ProtoCodec) MarshalInterfaceJSON(x proto.Message) ([]byte, error) { | ||
| any, err := types.NewAnyWithValue(x) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return pc.MarshalJSON(any) | ||
| } | ||
|
|
||
| // ProtoMarshalJSON provides an auxiliary function to return Proto3 JSON encoded | ||
| // bytes of a message. | ||
| func ProtoMarshalJSON(msg proto.Message, resolver jsonpb.AnyResolver) ([]byte, error) { | ||
| // method copied from sdk codec/json.go with EmitDefaults set to `false` | ||
| // so that empty fields are not rendered | ||
|
|
||
| // We use the OrigName because camel casing fields just doesn't make sense. | ||
| // EmitDefaults is also often the more expected behavior for CLI users | ||
| jm := &jsonpb.Marshaler{OrigName: true, EmitDefaults: false, AnyResolver: resolver} | ||
| err := types.UnpackInterfaces(msg, types.ProtoJSONPacker{JSONPBMarshaler: jm}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| buf := new(bytes.Buffer) | ||
|
|
||
| if err := jm.Marshal(buf, msg); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return buf.Bytes(), nil | ||
| } |
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