-
Notifications
You must be signed in to change notification settings - Fork 1k
/
extractor.go
144 lines (123 loc) · 2.76 KB
/
extractor.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
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
133
134
135
136
137
138
139
140
141
142
143
144
// Copyright 2020 Asim Aslam
//
// 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
//
// https://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.
//
// Original source: github.com/micro/go-micro/v3/server/mucp/extractor.go
package mucp
import (
"fmt"
"reflect"
"strings"
"github.com/micro/micro/v3/service/registry"
)
func extractValue(v reflect.Type, d int) *registry.Value {
if d == 3 {
return nil
}
if v == nil {
return nil
}
if v.Kind() == reflect.Ptr {
v = v.Elem()
}
arg := ®istry.Value{
Name: v.Name(),
Type: v.Name(),
}
switch v.Kind() {
case reflect.Struct:
for i := 0; i < v.NumField(); i++ {
f := v.Field(i)
val := extractValue(f.Type, d+1)
if val == nil {
continue
}
// if we can find a json tag use it
if tags := f.Tag.Get("json"); len(tags) > 0 {
parts := strings.Split(tags, ",")
if parts[0] == "-" || parts[0] == "omitempty" {
continue
}
val.Name = parts[0]
}
// if there's no name default it
if len(val.Name) == 0 {
val.Name = v.Field(i).Name
}
// still no name then continue
if len(val.Name) == 0 {
continue
}
arg.Values = append(arg.Values, val)
}
case reflect.Slice:
p := v.Elem()
if p.Kind() == reflect.Ptr {
p = p.Elem()
}
arg.Type = "[]" + p.Name()
}
return arg
}
func extractEndpoint(method reflect.Method) *registry.Endpoint {
if method.PkgPath != "" {
return nil
}
var rspType, reqType reflect.Type
var stream bool
mt := method.Type
switch mt.NumIn() {
case 3:
reqType = mt.In(1)
rspType = mt.In(2)
case 4:
reqType = mt.In(2)
rspType = mt.In(3)
default:
return nil
}
// are we dealing with a stream?
switch rspType.Kind() {
case reflect.Func, reflect.Interface:
stream = true
}
request := extractValue(reqType, 0)
response := extractValue(rspType, 0)
ep := ®istry.Endpoint{
Name: method.Name,
Request: request,
Response: response,
Metadata: make(map[string]string),
}
// set endpoint metadata for stream
if stream {
ep.Metadata = map[string]string{
"stream": fmt.Sprintf("%v", stream),
}
}
return ep
}
func extractSubValue(typ reflect.Type) *registry.Value {
var reqType reflect.Type
switch typ.NumIn() {
case 1:
reqType = typ.In(0)
case 2:
reqType = typ.In(1)
case 3:
reqType = typ.In(2)
default:
return nil
}
return extractValue(reqType, 0)
}