-
Notifications
You must be signed in to change notification settings - Fork 1.7k
/
common.go
497 lines (422 loc) · 11.6 KB
/
common.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
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
package models
import (
"bytes"
"database/sql/driver"
"encoding/hex"
"encoding/json"
"fmt"
"net/url"
"regexp"
"strings"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/pkg/errors"
"github.com/robfig/cron/v3"
"github.com/tidwall/gjson"
"go.uber.org/multierr"
"github.com/smartcontractkit/chainlink/v2/core/chains/evm/assets"
"github.com/smartcontractkit/chainlink/v2/core/chains/evm/utils/big"
)
// CronParser is the global parser for crontabs.
// It accepts the standard 5 field cron syntax as well as an optional 6th field
// at the front to represent seconds.
var CronParser cron.Parser
func init() {
cronParserSpec := cron.SecondOptional | cron.Minute | cron.Hour | cron.Dom | cron.Month | cron.Dow | cron.Descriptor
CronParser = cron.NewParser(cronParserSpec)
}
// JSON stores the json types string, number, bool, and null.
// Arrays and Objects are returned as their raw json types.
type JSON struct {
gjson.Result
}
// Value returns this instance serialized for database storage.
func (j JSON) Value() (driver.Value, error) {
s := j.Bytes()
if len(s) == 0 {
return nil, nil
}
return s, nil
}
// Scan reads the database value and returns an instance.
func (j *JSON) Scan(value interface{}) error {
switch v := value.(type) {
case string:
*j = JSON{Result: gjson.Parse(v)}
case []byte:
*j = JSON{Result: gjson.ParseBytes(v)}
default:
return fmt.Errorf("unable to convert %v of %T to JSON", value, value)
}
return nil
}
// ParseJSON attempts to coerce the input byte array into valid JSON
// and parse it into a JSON object.
func ParseJSON(b []byte) (JSON, error) {
var j JSON
str := string(b)
if len(str) == 0 {
return j, nil
}
return j, json.Unmarshal([]byte(str), &j)
}
// UnmarshalJSON parses the JSON bytes and stores in the *JSON pointer.
func (j *JSON) UnmarshalJSON(b []byte) error {
str := string(b)
if !gjson.Valid(str) {
return fmt.Errorf("invalid JSON: %v", str)
}
*j = JSON{gjson.Parse(str)}
return nil
}
// MarshalJSON returns the JSON data if it already exists, returns
// an empty JSON object as bytes if not.
func (j JSON) MarshalJSON() ([]byte, error) {
if j.Exists() {
return j.Bytes(), nil
}
return []byte("{}"), nil
}
func (j *JSON) UnmarshalTOML(val interface{}) error {
var bs []byte
switch v := val.(type) {
case string:
bs = []byte(v)
case []byte:
bs = v
}
var err error
*j, err = ParseJSON(bs)
return err
}
// Bytes returns the raw JSON.
func (j JSON) Bytes() []byte {
if len(j.String()) == 0 {
return nil
}
return []byte(j.String())
}
// WebURL contains the URL of the endpoint.
type WebURL url.URL
// UnmarshalJSON parses the raw URL stored in JSON-encoded
// data to a URL structure and sets it to the URL field.
func (w *WebURL) UnmarshalJSON(j []byte) error {
var v string
err := json.Unmarshal(j, &v)
if err != nil {
return err
}
// handle no url case
if len(v) == 0 {
return nil
}
u, err := url.ParseRequestURI(v)
if err != nil {
return err
}
*w = WebURL(*u)
return nil
}
// MarshalJSON returns the JSON-encoded string of the given data.
func (w WebURL) MarshalJSON() ([]byte, error) {
return json.Marshal(w.String())
}
// String delegates to the wrapped URL struct or an empty string when it is nil
func (w WebURL) String() string {
url := url.URL(w)
return url.String()
}
// Value returns this instance serialized for database storage.
func (w WebURL) Value() (driver.Value, error) {
return w.String(), nil
}
// Scan reads the database value and returns an instance.
func (w *WebURL) Scan(value interface{}) error {
s, ok := value.(string)
if !ok {
return fmt.Errorf("unable to convert %v of %T to WebURL", value, value)
}
u, err := url.ParseRequestURI(s)
if err != nil {
return err
}
*w = WebURL(*u)
return nil
}
// Cron holds the string that will represent the spec of the cron-job.
type Cron string
// UnmarshalJSON parses the raw spec stored in JSON-encoded
// data and stores it to the Cron string.
func (c *Cron) UnmarshalJSON(b []byte) error {
var s string
err := json.Unmarshal(b, &s)
if err != nil {
return fmt.Errorf("Cron: %w", err)
}
if s == "" {
return nil
}
if !strings.HasPrefix(s, "CRON_TZ=") {
return errors.New("Cron: specs must specify a time zone using CRON_TZ, e.g. 'CRON_TZ=UTC 5 * * * *'")
}
_, err = CronParser.Parse(s)
if err != nil {
return fmt.Errorf("Cron: %w", err)
}
*c = Cron(s)
return nil
}
// String returns the current Cron spec string.
func (c Cron) String() string {
return string(c)
}
// Interval represents a time.Duration stored as a Postgres interval type
type Interval time.Duration
// NewInterval creates Interval for specified duration
func NewInterval(d time.Duration) *Interval {
i := new(Interval)
*i = Interval(d)
return i
}
func (i Interval) Duration() time.Duration {
return time.Duration(i)
}
// MarshalText implements the text.Marshaler interface.
func (i Interval) MarshalText() ([]byte, error) {
return []byte(time.Duration(i).String()), nil
}
// UnmarshalText implements the text.Unmarshaler interface.
func (i *Interval) UnmarshalText(input []byte) error {
v, err := time.ParseDuration(string(input))
if err != nil {
return err
}
*i = Interval(v)
return nil
}
func (i *Interval) Scan(v interface{}) error {
if v == nil {
*i = Interval(time.Duration(0))
return nil
}
asInt64, is := v.(int64)
if !is {
return errors.Errorf("models.Interval#Scan() wanted int64, got %T", v)
}
*i = Interval(time.Duration(asInt64) * time.Nanosecond)
return nil
}
func (i Interval) Value() (driver.Value, error) {
return time.Duration(i).Nanoseconds(), nil
}
func (i Interval) IsZero() bool {
return time.Duration(i) == time.Duration(0)
}
// SendEtherRequest represents a request to transfer ETH.
type SendEtherRequest struct {
DestinationAddress common.Address `json:"address"`
FromAddress common.Address `json:"from"`
Amount assets.Eth `json:"amount"`
EVMChainID *big.Big `json:"evmChainID"`
AllowHigherAmounts bool `json:"allowHigherAmounts"`
SkipWaitTxAttempt bool `json:"skipWaitTxAttempt"`
WaitAttemptTimeout *time.Duration `json:"waitAttemptTimeout"`
}
// AddressCollection is an array of common.Address
// serializable to and from a database.
type AddressCollection []common.Address
// ToStrings returns this address collection as an array of strings.
func (r AddressCollection) ToStrings() []string {
// Unable to convert copy-free without unsafe:
// https://stackoverflow.com/a/48554123/639773
converted := make([]string, len(r))
for i, e := range r {
converted[i] = e.Hex()
}
return converted
}
// Value returns the string value to be written to the database.
func (r AddressCollection) Value() (driver.Value, error) {
return strings.Join(r.ToStrings(), ","), nil
}
// Scan parses the database value as a string.
func (r *AddressCollection) Scan(value interface{}) error {
str, ok := value.(string)
if !ok {
return fmt.Errorf("unable to convert %v of %T to AddressCollection", value, value)
}
if len(str) == 0 {
return nil
}
arr := strings.Split(str, ",")
collection := make(AddressCollection, len(arr))
for i, a := range arr {
collection[i] = common.HexToAddress(a)
}
*r = collection
return nil
}
// Merge returns a new map with all keys merged from left to right
// On conflicting keys, rightmost inputs will clobber leftmost inputs
func Merge(inputs ...JSON) (JSON, error) {
output := make(map[string]interface{})
for _, input := range inputs {
switch v := input.Result.Value().(type) {
case map[string]interface{}:
for key, value := range v {
output[key] = value
}
case nil:
default:
return JSON{}, errors.New("can only merge JSON objects")
}
}
bytes, err := json.Marshal(output)
if err != nil {
return JSON{}, err
}
return JSON{Result: gjson.ParseBytes(bytes)}, nil
}
// Explicit type indicating a 32-byte sha256 hash
type Sha256Hash [32]byte
var EmptySha256Hash = new(Sha256Hash)
// MarshalJSON converts a Sha256Hash to a JSON byte slice.
func (s Sha256Hash) MarshalJSON() ([]byte, error) {
return json.Marshal(s.String())
}
// UnmarshalJSON converts a bytes slice of JSON to a TaskType.
func (s *Sha256Hash) UnmarshalJSON(input []byte) error {
var shaHash string
if err := json.Unmarshal(input, &shaHash); err != nil {
return err
}
sha, err := Sha256HashFromHex(shaHash)
if err != nil {
return err
}
*s = sha
return nil
}
func Sha256HashFromHex(x string) (Sha256Hash, error) {
bs, err := hex.DecodeString(x)
if err != nil {
return Sha256Hash{}, err
}
var hash Sha256Hash
copy(hash[:], bs)
return hash, nil
}
func MustSha256HashFromHex(x string) Sha256Hash {
bs, err := hex.DecodeString(x)
if err != nil {
panic(err)
}
var hash Sha256Hash
copy(hash[:], bs)
return hash
}
func (s Sha256Hash) String() string {
return hex.EncodeToString(s[:])
}
func (s *Sha256Hash) MarshalText() ([]byte, error) {
return []byte(s.String()), nil
}
func (s *Sha256Hash) UnmarshalText(bs []byte) (err error) {
*s, err = Sha256HashFromHex(string(bs))
return
}
func (s *Sha256Hash) Scan(value interface{}) error {
bytes, ok := value.([]byte)
if !ok {
return errors.Errorf("Failed to unmarshal Sha256Hash value: %v", value)
}
if s == nil {
*s = Sha256Hash{}
}
copy((*s)[:], bytes)
return nil
}
func (s Sha256Hash) Value() (driver.Value, error) {
b := make([]byte, 32)
copy(b, s[:])
return b, nil
}
// ServiceHeader is an HTTP header to include in POST to log service.
type ServiceHeader struct {
Header string
Value string
}
func (h *ServiceHeader) UnmarshalText(input []byte) error {
parts := strings.SplitN(string(input), ":", 2)
h.Header = parts[0]
if len(parts) > 1 {
h.Value = strings.TrimSpace(parts[1])
}
return h.Validate()
}
func (h *ServiceHeader) MarshalText() ([]byte, error) {
var b bytes.Buffer
fmt.Fprintf(&b, "%s: %s", h.Header, h.Value)
return b.Bytes(), nil
}
type ServiceHeaders []ServiceHeader
func (sh *ServiceHeaders) UnmarshalText(input []byte) error {
if sh == nil {
return errors.New("Cannot unmarshal to a nil receiver")
}
headers := string(input)
var parsedHeaders []ServiceHeader
if headers != "" {
headerLines := strings.Split(headers, "\\")
for _, header := range headerLines {
keyValue := strings.Split(header, "||")
if len(keyValue) != 2 {
return errors.Errorf("invalid headers provided for the audit logger. Value, single pair split on || required, got: %s", keyValue)
}
h := ServiceHeader{
Header: keyValue[0],
Value: keyValue[1],
}
if err := h.Validate(); err != nil {
return err
}
parsedHeaders = append(parsedHeaders, h)
}
}
*sh = parsedHeaders
return nil
}
func (sh *ServiceHeaders) MarshalText() ([]byte, error) {
if sh == nil {
return nil, errors.New("Cannot marshal to a nil receiver")
}
sb := strings.Builder{}
for _, header := range *sh {
sb.WriteString(header.Header)
sb.WriteString("||")
sb.WriteString(header.Value)
sb.WriteString("\\")
}
serialized := sb.String()
if len(serialized) > 0 {
serialized = serialized[:len(serialized)-1]
}
return []byte(serialized), nil
}
// We act slightly more strictly than the HTTP specifications
// technically allow instead following the guidelines of
// cloudflare transforms.
// https://developers.cloudflare.com/rules/transform/request-header-modification/reference/header-format
var (
headerNameRegex = regexp.MustCompile(`^[A-Za-z\-]+$`)
headerValueRegex = regexp.MustCompile("^[A-Za-z_ :;.,\\/\"'?!(){}[\\]@<>=\\-+*#$&`|~^%]+$")
)
func (h ServiceHeader) Validate() (err error) {
if !headerNameRegex.MatchString(h.Header) {
err = multierr.Append(err, errors.Errorf("invalid header name: %s", h.Header))
}
if !headerValueRegex.MatchString(h.Value) {
err = multierr.Append(err, errors.Errorf("invalid header value: %s", h.Value))
}
return
}