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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate go run . -execute
package main
import (
"flag"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path"
"path/filepath"
"strings"
"github.com/golang/protobuf/proto"
gengo "google.golang.org/protobuf/cmd/protoc-gen-go/internal_gengo"
"google.golang.org/protobuf/compiler/protogen"
"google.golang.org/protobuf/reflect/protodesc"
"google.golang.org/protobuf/reflect/protoreflect"
"google.golang.org/protobuf/types/descriptorpb"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/durationpb"
"google.golang.org/protobuf/types/known/emptypb"
"google.golang.org/protobuf/types/known/structpb"
"google.golang.org/protobuf/types/known/timestamppb"
"google.golang.org/protobuf/types/known/wrapperspb"
"google.golang.org/protobuf/types/pluginpb"
)
func main() {
run := flag.Bool("execute", false, "Write generated files to destination.")
flag.Parse()
// Set of generated proto packages to forward to v2.
files := []struct {
oldGoPkg string
newGoPkg string
pbDesc protoreflect.FileDescriptor
}{{
oldGoPkg: "github.com/golang/protobuf/protoc-gen-go/descriptor;descriptor",
newGoPkg: "google.golang.org/protobuf/types/descriptorpb",
pbDesc: descriptorpb.File_google_protobuf_descriptor_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/protoc-gen-go/plugin;plugin_go",
newGoPkg: "google.golang.org/protobuf/types/pluginpb",
pbDesc: pluginpb.File_google_protobuf_compiler_plugin_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/ptypes/any;any",
newGoPkg: "google.golang.org/protobuf/types/known/anypb",
pbDesc: anypb.File_google_protobuf_any_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/ptypes/duration;duration",
newGoPkg: "google.golang.org/protobuf/types/known/durationpb",
pbDesc: durationpb.File_google_protobuf_duration_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/ptypes/timestamp;timestamp",
newGoPkg: "google.golang.org/protobuf/types/known/timestamppb",
pbDesc: timestamppb.File_google_protobuf_timestamp_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/ptypes/wrappers;wrappers",
newGoPkg: "google.golang.org/protobuf/types/known/wrapperspb",
pbDesc: wrapperspb.File_google_protobuf_wrappers_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/ptypes/struct;structpb",
newGoPkg: "google.golang.org/protobuf/types/known/structpb",
pbDesc: structpb.File_google_protobuf_struct_proto,
}, {
oldGoPkg: "github.com/golang/protobuf/ptypes/empty;empty",
newGoPkg: "google.golang.org/protobuf/types/known/emptypb",
pbDesc: emptypb.File_google_protobuf_empty_proto,
}}
// For each package, construct a proto file that public imports the package.
var req pluginpb.CodeGeneratorRequest
var flags []string
for _, file := range files {
pkgPath := file.oldGoPkg[:strings.IndexByte(file.oldGoPkg, ';')]
fd := &descriptorpb.FileDescriptorProto{
Name: proto.String(pkgPath + "/" + path.Base(pkgPath) + ".proto"),
Syntax: proto.String(file.pbDesc.Syntax().String()),
Dependency: []string{file.pbDesc.Path()},
PublicDependency: []int32{0},
Options: &descriptorpb.FileOptions{GoPackage: proto.String(file.oldGoPkg)},
}
req.ProtoFile = append(req.ProtoFile, protodesc.ToFileDescriptorProto(file.pbDesc), fd)
req.FileToGenerate = append(req.FileToGenerate, fd.GetName())
flags = append(flags, "M"+file.pbDesc.Path()+"="+file.newGoPkg)
}
req.Parameter = proto.String(strings.Join(flags, ","))
// Use the internal logic of protoc-gen-go to generate the files.
gen, err := protogen.Options{}.New(&req)
check(err)
for _, file := range gen.Files {
if file.Generate {
gengo.GenerateVersionMarkers = false
gengo.GenerateFile(gen, file)
}
}
// Write the generated files.
resp := gen.Response()
if resp.Error != nil {
panic("gengo error: " + resp.GetError())
}
for _, file := range resp.File {
relPath, err := filepath.Rel(filepath.FromSlash("github.com/golang/protobuf"), file.GetName())
check(err)
check(ioutil.WriteFile(relPath+".bak", []byte(file.GetContent()), 0664))
if *run {
fmt.Println("#", relPath)
check(os.Rename(relPath+".bak", relPath))
} else {
cmd := exec.Command("diff", relPath, relPath+".bak", "-N", "-u")
cmd.Stdout = os.Stdout
cmd.Run()
os.Remove(relPath + ".bak") // best-effort delete
}
}
}
func check(err error) {
if err != nil {
panic(err)
}
}
|
