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status.go
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status.go
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// Copyright 2020 Douyu
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package xgin
import (
"encoding/json"
"fmt"
"strconv"
"strings"
"github.com/golang/protobuf/jsonpb"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/ptypes/any"
rstatus "google.golang.org/genproto/googleapis/rpc/status"
"google.golang.org/grpc/status"
)
// EmptyMessage ...
type EmptyMessage struct{}
// Reset ...
func (m *EmptyMessage) Reset() { *m = EmptyMessage{} }
// String ...
func (m *EmptyMessage) String() string { return "{}" }
// ProtoMessage ...
func (*EmptyMessage) ProtoMessage() {}
// GRPCProxyMessage ...
type GRPCProxyMessage struct {
Error int `protobuf:"varint,1,opt,name=error" json:"error"`
Message string `protobuf:"bytes,2,opt,name=msg" json:"msg"`
Data proto.Message `protobuf:"bytes,3,opt,name=data" json:"data"`
}
// Reset ...
func (m *GRPCProxyMessage) Reset() { *m = GRPCProxyMessage{} }
// String ...
func (m *GRPCProxyMessage) String() string { return proto.CompactTextString(m) }
// ProtoMessage ...
func (*GRPCProxyMessage) ProtoMessage() {}
// MarshalJSONPB ...
func (m *GRPCProxyMessage) MarshalJSONPB(jsb *jsonpb.Marshaler) ([]byte, error) {
ss, err := jsonpbMarshaler.MarshalToString(m.Data)
if err != nil {
return []byte{}, err
}
msg := struct {
Error int `json:"error"`
Message string `json:"msg"`
Data json.RawMessage `json:"data"`
}{
Error: m.Error,
Message: m.Message,
Data: json.RawMessage([]byte(ss)),
}
return json.Marshal(msg)
}
var (
jsonpbMarshaler = jsonpb.Marshaler{
EmitDefaults: true,
}
statusMSDefault *rstatus.Status
)
type statusErr struct {
s *rstatus.Status
}
// Proto ...
func (e *statusErr) Proto() *rstatus.Status {
if e.s == nil {
return nil
}
return proto.Clone(e.s).(*rstatus.Status)
}
func init() {
s, _ := status.FromError(errMicroDefault)
de, _ := statusFromString(s.Message())
statusMSDefault = de.Proto()
}
func statusFromString(s string) (*statusErr, bool) {
i := strings.Index(s, ":")
if i == -1 {
return nil, false
}
u64, err := strconv.ParseInt(s[:i], 10, 32)
if err != nil {
return nil, false
}
return &statusErr{
&rstatus.Status{
Code: int32(u64),
Message: s[i:],
Details: []*any.Any{},
},
}, true
}
func createStatusErr(code uint32, msg string) string {
return fmt.Sprintf("%d:%s", code, msg)
}