/
httpclient.go
475 lines (427 loc) · 12 KB
/
httpclient.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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
// Httpclient: wasmcloud capability contract for http client
package httpclient
import (
"github.com/wasmcloud/actor-tinygo" //nolint
cbor "github.com/wasmcloud/tinygo-cbor" //nolint
msgpack "github.com/wasmcloud/tinygo-msgpack" //nolint
)
// map data structure for holding http headers
//
type HeaderMap map[string]HeaderValues
// MEncode serializes a HeaderMap using msgpack
func (o *HeaderMap) MEncode(encoder msgpack.Writer) error {
encoder.WriteMapSize(uint32(len(*o)))
for key_o, val_o := range *o {
encoder.WriteString(key_o)
val_o.MEncode(encoder)
}
return encoder.CheckError()
}
// MDecodeHeaderMap deserializes a HeaderMap using msgpack
func MDecodeHeaderMap(d *msgpack.Decoder) (HeaderMap, error) {
isNil, err := d.IsNextNil()
if err != nil || isNil {
return make(map[string]HeaderValues, 0), err
}
size, err := d.ReadMapSize()
if err != nil {
return make(map[string]HeaderValues, 0), err
}
val := make(map[string]HeaderValues, size)
for i := uint32(0); i < size; i++ {
k, _ := d.ReadString()
v, err := MDecodeHeaderValues(d)
if err != nil {
return val, err
}
val[k] = v
}
return val, nil
}
// CEncode serializes a HeaderMap using cbor
func (o *HeaderMap) CEncode(encoder cbor.Writer) error {
encoder.WriteMapSize(uint32(len(*o)))
for key_o, val_o := range *o {
encoder.WriteString(key_o)
val_o.CEncode(encoder)
}
return encoder.CheckError()
}
// CDecodeHeaderMap deserializes a HeaderMap using cbor
func CDecodeHeaderMap(d *cbor.Decoder) (HeaderMap, error) {
isNil, err := d.IsNextNil()
if err != nil || isNil {
return make(map[string]HeaderValues, 0), err
}
size, indef, err := d.ReadMapSize()
if err != nil && indef {
err = cbor.NewReadError("indefinite maps not supported")
}
if err != nil {
return make(map[string]HeaderValues, 0), err
}
val := make(map[string]HeaderValues, size)
for i := uint32(0); i < size; i++ {
k, _ := d.ReadString()
v, err := CDecodeHeaderValues(d)
if err != nil {
return val, err
}
val[k] = v
}
return val, nil
}
type HeaderValues []string
// MEncode serializes a HeaderValues using msgpack
func (o *HeaderValues) MEncode(encoder msgpack.Writer) error {
encoder.WriteArraySize(uint32(len(*o)))
for _, item_o := range *o {
encoder.WriteString(item_o)
}
return encoder.CheckError()
}
// MDecodeHeaderValues deserializes a HeaderValues using msgpack
func MDecodeHeaderValues(d *msgpack.Decoder) (HeaderValues, error) {
isNil, err := d.IsNextNil()
if err != nil || isNil {
return make([]string, 0), err
}
size, err := d.ReadArraySize()
if err != nil {
return make([]string, 0), err
}
val := make([]string, size)
for i := uint32(0); i < size; i++ {
item, err := d.ReadString()
if err != nil {
return val, err
}
val = append(val, item)
}
return val, nil
}
// CEncode serializes a HeaderValues using cbor
func (o *HeaderValues) CEncode(encoder cbor.Writer) error {
encoder.WriteArraySize(uint32(len(*o)))
for _, item_o := range *o {
encoder.WriteString(item_o)
}
return encoder.CheckError()
}
// CDecodeHeaderValues deserializes a HeaderValues using cbor
func CDecodeHeaderValues(d *cbor.Decoder) (HeaderValues, error) {
isNil, err := d.IsNextNil()
if err != nil || isNil {
return make([]string, 0), err
}
size, indef, err := d.ReadArraySize()
if err != nil && indef {
err = cbor.NewReadError("indefinite arrays not supported")
}
if err != nil {
return make([]string, 0), err
}
val := make([]string, size)
for i := uint32(0); i < size; i++ {
item, err := d.ReadString()
if err != nil {
return val, err
}
val = append(val, item)
}
return val, nil
}
// http request to be sent through the provider
type HttpRequest struct {
// http method, defaults to "GET"
Method string
Url string
// optional headers. defaults to empty
Headers HeaderMap
// request body, defaults to empty
Body []byte
}
// MEncode serializes a HttpRequest using msgpack
func (o *HttpRequest) MEncode(encoder msgpack.Writer) error {
encoder.WriteMapSize(4)
encoder.WriteString("method")
encoder.WriteString(o.Method)
encoder.WriteString("url")
encoder.WriteString(o.Url)
encoder.WriteString("headers")
o.Headers.MEncode(encoder)
encoder.WriteString("body")
encoder.WriteByteArray(o.Body)
return encoder.CheckError()
}
// MDecodeHttpRequest deserializes a HttpRequest using msgpack
func MDecodeHttpRequest(d *msgpack.Decoder) (HttpRequest, error) {
var val HttpRequest
isNil, err := d.IsNextNil()
if err != nil || isNil {
return val, err
}
size, err := d.ReadMapSize()
if err != nil {
return val, err
}
for i := uint32(0); i < size; i++ {
field, err := d.ReadString()
if err != nil {
return val, err
}
switch field {
case "method":
val.Method, err = d.ReadString()
case "url":
val.Url, err = d.ReadString()
case "headers":
val.Headers, err = MDecodeHeaderMap(d)
case "body":
val.Body, err = d.ReadByteArray()
default:
err = d.Skip()
}
if err != nil {
return val, err
}
}
return val, nil
}
// CEncode serializes a HttpRequest using cbor
func (o *HttpRequest) CEncode(encoder cbor.Writer) error {
encoder.WriteMapSize(4)
encoder.WriteString("method")
encoder.WriteString(o.Method)
encoder.WriteString("url")
encoder.WriteString(o.Url)
encoder.WriteString("headers")
o.Headers.CEncode(encoder)
encoder.WriteString("body")
encoder.WriteByteArray(o.Body)
return encoder.CheckError()
}
// CDecodeHttpRequest deserializes a HttpRequest using cbor
func CDecodeHttpRequest(d *cbor.Decoder) (HttpRequest, error) {
var val HttpRequest
isNil, err := d.IsNextNil()
if err != nil || isNil {
return val, err
}
size, indef, err := d.ReadMapSize()
if err != nil && indef {
err = cbor.NewReadError("indefinite maps not supported")
}
if err != nil {
return val, err
}
for i := uint32(0); i < size; i++ {
field, err := d.ReadString()
if err != nil {
return val, err
}
switch field {
case "method":
val.Method, err = d.ReadString()
case "url":
val.Url, err = d.ReadString()
case "headers":
val.Headers, err = CDecodeHeaderMap(d)
case "body":
val.Body, err = d.ReadByteArray()
default:
err = d.Skip()
}
if err != nil {
return val, err
}
}
return val, nil
}
// response from the http request
type HttpResponse struct {
// response status code
StatusCode uint16
// Case is not guaranteed to be normalized, so
// actors checking response headers need to do their own
// case conversion.
// Example (rust):
// // check for 'Content-Type' header
// let content_type:Option<&Vec<String>> = header.iter()
// .map(|(k,_)| k.to_ascii_lowercase())
// .find(|(k,_)| k == "content-type")
// .map(|(_,v)| v);
Header HeaderMap
// response body
Body []byte
}
// MEncode serializes a HttpResponse using msgpack
func (o *HttpResponse) MEncode(encoder msgpack.Writer) error {
encoder.WriteMapSize(3)
encoder.WriteString("statusCode")
encoder.WriteUint16(o.StatusCode)
encoder.WriteString("header")
o.Header.MEncode(encoder)
encoder.WriteString("body")
encoder.WriteByteArray(o.Body)
return encoder.CheckError()
}
// MDecodeHttpResponse deserializes a HttpResponse using msgpack
func MDecodeHttpResponse(d *msgpack.Decoder) (HttpResponse, error) {
var val HttpResponse
isNil, err := d.IsNextNil()
if err != nil || isNil {
return val, err
}
size, err := d.ReadMapSize()
if err != nil {
return val, err
}
for i := uint32(0); i < size; i++ {
field, err := d.ReadString()
if err != nil {
return val, err
}
switch field {
case "statusCode":
val.StatusCode, err = d.ReadUint16()
case "header":
val.Header, err = MDecodeHeaderMap(d)
case "body":
val.Body, err = d.ReadByteArray()
default:
err = d.Skip()
}
if err != nil {
return val, err
}
}
return val, nil
}
// CEncode serializes a HttpResponse using cbor
func (o *HttpResponse) CEncode(encoder cbor.Writer) error {
encoder.WriteMapSize(3)
encoder.WriteString("statusCode")
encoder.WriteUint16(o.StatusCode)
encoder.WriteString("header")
o.Header.CEncode(encoder)
encoder.WriteString("body")
encoder.WriteByteArray(o.Body)
return encoder.CheckError()
}
// CDecodeHttpResponse deserializes a HttpResponse using cbor
func CDecodeHttpResponse(d *cbor.Decoder) (HttpResponse, error) {
var val HttpResponse
isNil, err := d.IsNextNil()
if err != nil || isNil {
return val, err
}
size, indef, err := d.ReadMapSize()
if err != nil && indef {
err = cbor.NewReadError("indefinite maps not supported")
}
if err != nil {
return val, err
}
for i := uint32(0); i < size; i++ {
field, err := d.ReadString()
if err != nil {
return val, err
}
switch field {
case "statusCode":
val.StatusCode, err = d.ReadUint16()
case "header":
val.Header, err = CDecodeHeaderMap(d)
case "body":
val.Body, err = d.ReadByteArray()
default:
err = d.Skip()
}
if err != nil {
return val, err
}
}
return val, nil
}
// HttpClient - issue outgoing http requests via an external provider
// To use this capability, the actor must be linked
// with "wasmcloud:httpclient"
type HttpClient interface {
// Issue outgoing http request
Request(ctx *actor.Context, arg HttpRequest) (*HttpResponse, error)
}
// HttpClientHandler is called by an actor during `main` to generate a dispatch handler
// The output of this call should be passed into `actor.RegisterHandlers`
func HttpClientHandler(actor_ HttpClient) actor.Handler {
return actor.NewHandler("HttpClient", &HttpClientReceiver{}, actor_)
}
// HttpClientContractId returns the capability contract id for this interface
func HttpClientContractId() string { return "wasmcloud:httpclient" }
// HttpClientReceiver receives messages defined in the HttpClient service interface
// HttpClient - issue outgoing http requests via an external provider
// To use this capability, the actor must be linked
// with "wasmcloud:httpclient"
type HttpClientReceiver struct{}
func (r *HttpClientReceiver) Dispatch(ctx *actor.Context, svc interface{}, message *actor.Message) (*actor.Message, error) {
svc_, _ := svc.(HttpClient)
switch message.Method {
case "Request":
{
d := msgpack.NewDecoder(message.Arg)
value, err_ := MDecodeHttpRequest(&d)
if err_ != nil {
return nil, err_
}
resp, err := svc_.Request(ctx, value)
if err != nil {
return nil, err
}
var sizer msgpack.Sizer
size_enc := &sizer
resp.MEncode(size_enc)
buf := make([]byte, sizer.Len())
encoder := msgpack.NewEncoder(buf)
enc := &encoder
resp.MEncode(enc)
return &actor.Message{Method: "HttpClient.Request", Arg: buf}, nil
}
default:
return nil, actor.NewRpcError("MethodNotHandled", "HttpClient."+message.Method)
}
}
// HttpClientSender sends messages to a HttpClient service
// HttpClient - issue outgoing http requests via an external provider
// To use this capability, the actor must be linked
// with "wasmcloud:httpclient"
type HttpClientSender struct{ transport actor.Transport }
// NewProvider constructs a client for sending to a HttpClient provider
// implementing the 'wasmcloud:httpclient' capability contract, with the "default" link
func NewProviderHttpClient() *HttpClientSender {
transport := actor.ToProvider("wasmcloud:httpclient", "default")
return &HttpClientSender{transport: transport}
}
// NewProviderHttpClientLink constructs a client for sending to a HttpClient provider
// implementing the 'wasmcloud:httpclient' capability contract, with the specified link name
func NewProviderHttpClientLink(linkName string) *HttpClientSender {
transport := actor.ToProvider("wasmcloud:httpclient", linkName)
return &HttpClientSender{transport: transport}
}
// Issue outgoing http request
func (s *HttpClientSender) Request(ctx *actor.Context, arg HttpRequest) (*HttpResponse, error) {
var sizer msgpack.Sizer
size_enc := &sizer
arg.MEncode(size_enc)
buf := make([]byte, sizer.Len())
var encoder = msgpack.NewEncoder(buf)
enc := &encoder
arg.MEncode(enc)
out_buf, _ := s.transport.Send(ctx, actor.Message{Method: "HttpClient.Request", Arg: buf})
d := msgpack.NewDecoder(out_buf)
resp, err_ := MDecodeHttpResponse(&d)
if err_ != nil {
return nil, err_
}
return &resp, nil
}
// This file is generated automatically using wasmcloud/weld-codegen 0.4.5