-
Notifications
You must be signed in to change notification settings - Fork 0
/
request_tmpls.go
228 lines (194 loc) · 5.16 KB
/
request_tmpls.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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
package impls
import (
"bytes"
_ "embed"
"encoding/json"
"fmt"
"io"
"net/http"
"strings"
"github.com/spf13/viper"
"github.com/tidwall/gjson"
)
var (
//go:embed request_tmpls.yaml
_ExampleRequestTmpls string
)
type Output struct {
Key string `mapstructure:"key"` // key in json
Header string `mapstructure:"header"` // header key
Tmpl string `mapstructure:"tmpl"` // header value template
}
type RequestTmpl struct {
Name string `mapstructure:"name"`
Method string `mapstructure:"method"`
Path string `mapstructure:"path"`
Params string `mapstructure:"params"`
Body string `mapstructure:"body"`
NoPublicHeaders bool `mapstructure:"no_public_headers"`
Headers map[string]string `mapstructure:"headers"`
Outputs []Output `mapstructure:"outputs"`
// Expected // TODO
}
func ValidJSON(bts []byte) (err error) {
var js json.RawMessage
return json.Unmarshal(bts, &js)
}
func ExampleRequestTmpls() string {
return _ExampleRequestTmpls
}
func (output *Output) Get(bts []byte) (value string, err error) {
if err = ValidJSON(bts); err != nil {
return "", err
}
value = gjson.GetBytes(bts, output.Key).String()
if output.Tmpl != "" {
value = strings.Replace(output.Tmpl, "{}", value, -1)
}
return value, nil
}
type RequestTmpls struct {
Url string `mapstructure:"url"`
Headers map[string]string `mapstructure:"headers"`
Prelude []RequestTmpl `mapstructure:"prelude"`
APIs []RequestTmpl `mapstructure:"apis"`
// header http.Header
client *http.Client
apiMap map[string]*RequestTmpl
}
func LoadRequestTmpls(name, fp string) (item *RequestTmpls, err error) {
conf := viper.New()
conf.SetConfigName(name)
conf.SetConfigFile(fp)
if err = conf.ReadInConfig(); err != nil {
return nil, fmt.Errorf("ReadInConfig(): %q, %v", fp, err)
}
item = new(RequestTmpls)
if err = conf.Unmarshal(item); err != nil {
return nil, err
}
item.client = new(http.Client)
// item.header = make(http.Header)
item.apiMap = make(map[string]*RequestTmpl, len(item.APIs))
for i := range item.APIs {
api := &item.APIs[i]
m := strings.ToUpper(api.Method)
if api.Method != "GET" && api.Method != "POST" {
return nil, fmt.Errorf("invalid method: %s", api.Method)
}
api.Method = m
item.apiMap[api.Name] = api
}
// for k, v := range item.Headers {
// item.header.Set(k, v)
// }
return
}
func (item *RequestTmpls) request(tmpl *RequestTmpl, prelude bool) (
statusCode int, body string, err error) {
var (
bts []byte
v, p string
out bytes.Buffer
reader io.Reader
req *http.Request
res *http.Response
)
p = item.Url + tmpl.Path
bts = bytes.TrimSpace([]byte(tmpl.Params))
if len(bts) > 0 {
// strs := make([]string, 0, len(tmpl.Params))
// for k, v := range tmpl.Params {
// strs = append(strs, fmt.Sprintf("%s=%s", k, v))
// }
// p += "?" + strings.Join(strs, "&")
params := make(map[string]any)
if err = json.Unmarshal(bts, ¶ms); err != nil {
return 0, "", err
}
strs := make([]string, 0)
for k, v := range params {
if val, ok := v.(string); ok {
strs = append(strs, k+"="+val)
} else if vals, ok := v.([]string); ok {
for i := range vals {
vals[i] = k + "=" + vals[i]
}
strs = append(strs, strings.Join(vals, "&"))
} else {
return 0, "", fmt.Errorf("params only supports string and []")
}
}
p += "?" + strings.Join(strs, "&")
}
if len(tmpl.Body) > 0 {
reader = bytes.NewBufferString(tmpl.Body)
}
if req, err = http.NewRequest(tmpl.Method, p, reader); err != nil {
return 0, "", err
}
if !tmpl.NoPublicHeaders {
for k, v := range item.Headers {
req.Header.Add(k, v)
}
}
for k, v := range tmpl.Headers {
req.Header.Add(k, v)
}
if res, err = item.client.Do(req); err != nil {
return 0, "", err
}
statusCode = res.StatusCode
defer res.Body.Close()
bts, err = io.ReadAll(res.Body)
if len(bts) > 0 && strings.Contains(res.Header.Get("Content-Type"), "application/json") {
if e := json.Indent(&out, bts, "", " "); e == nil {
body = string(out.Bytes())
} else {
body = string(bts)
}
} else {
body = string(bts)
}
if err != nil {
return
}
if prelude {
for i := range tmpl.Outputs {
output := &tmpl.Outputs[i]
if v, err = output.Get(bts); err != nil {
return
}
// item.header.Set(output.Header, v)
item.Headers[output.Header] = v
}
}
return
}
func (item *RequestTmpls) Match(names ...string) (tmpls []*RequestTmpl, err error) {
tmpls = make([]*RequestTmpl, 0, len(names))
if len(names) == 0 {
return
}
for _, v := range names {
if tmpl, ok := item.apiMap[v]; !ok {
return nil, fmt.Errorf("api not found: %s", v)
} else {
tmpls = append(tmpls, tmpl)
}
}
return
}
func (item *RequestTmpls) Request(tmpl *RequestTmpl) (
statusCode int, body string, err error) {
for i := range item.Prelude {
r := &item.Prelude[i]
if statusCode, _, err = item.request(r, true); err != nil {
return -2, "", err
}
if statusCode != http.StatusOK {
return -1, "", fmt.Errorf("%s statusCode: %d", r.Name, statusCode)
}
}
return item.request(tmpl, false)
}