forked from uber/prototool
/
handler.go
97 lines (88 loc) · 3.38 KB
/
handler.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package reflect
import (
"fmt"
"github.com/golang/protobuf/protoc-gen-go/descriptor"
"github.com/jhump/protoreflect/desc"
"github.com/jhump/protoreflect/dynamic"
intdesc "github.com/uber/prototool/internal/desc"
"github.com/uber/prototool/internal/extract"
"go.uber.org/zap"
)
type handler struct {
logger *zap.Logger
getter extract.Getter
}
func newHandler(options ...HandlerOption) *handler {
handler := &handler{
logger: zap.NewNop(),
}
for _, option := range options {
option(handler)
}
// TODO(pedge): composition
handler.getter = extract.NewGetter(
extract.GetterWithLogger(handler.logger),
)
return handler
}
func (h *handler) BinaryToJSON(fileDescriptorSets []*descriptor.FileDescriptorSet, messagePath string, binaryData []byte) ([]byte, error) {
dynamicMessage, err := h.getDynamicMessage(fileDescriptorSets, messagePath)
if err != nil {
return nil, err
}
if err := dynamicMessage.Unmarshal(binaryData); err != nil {
return nil, err
}
return dynamicMessage.MarshalJSON()
}
func (h *handler) JSONToBinary(fileDescriptorSets []*descriptor.FileDescriptorSet, messagePath string, jsonData []byte) ([]byte, error) {
dynamicMessage, err := h.getDynamicMessage(fileDescriptorSets, messagePath)
if err != nil {
return nil, err
}
if err := dynamicMessage.UnmarshalJSON(jsonData); err != nil {
return nil, err
}
return dynamicMessage.Marshal()
}
func (h *handler) getDynamicMessage(fileDescriptorSets []*descriptor.FileDescriptorSet, messagePath string) (*dynamic.Message, error) {
message, err := h.getter.GetMessage(fileDescriptorSets, messagePath)
if err != nil {
return nil, err
}
fileDescriptorSet, err := intdesc.SortFileDescriptorSet(message.FileDescriptorSet, message.FileDescriptorProto)
if err != nil {
return nil, err
}
fileDescriptor, err := desc.CreateFileDescriptorFromSet(fileDescriptorSet)
if err != nil {
return nil, err
}
if len(message.FullyQualifiedPath) == 0 || message.FullyQualifiedPath[0] != '.' {
return nil, fmt.Errorf("malformed FullyQualifiedPath: %s", message.FullyQualifiedPath)
}
messageDescriptor := fileDescriptor.FindMessage(message.FullyQualifiedPath[1:])
if messageDescriptor == nil {
return nil, fmt.Errorf("no MessageDescriptor for path %s", message.FullyQualifiedPath)
}
return dynamic.NewMessage(messageDescriptor), nil
}