-
Notifications
You must be signed in to change notification settings - Fork 52
/
errors.go
347 lines (301 loc) · 8.09 KB
/
errors.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
package apierrors
import (
"errors"
"fmt"
"net/http"
"reflect"
"strings"
"code.cloudfoundry.org/korifi/controllers/webhooks"
"github.com/go-logr/logr"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
)
type ApiError interface {
Detail() string
Title() string
Code() int
HttpStatus() int
Unwrap() error
Error() string
}
// LogAndReturn logs api errors at the info level and other errors at the
// error level since api errors are expected recoverable conditions.
// It returns the error for convenience.
func LogAndReturn(logger logr.Logger, err error, msg string, keysAndValues ...interface{}) error {
var apiError ApiError
if errors.As(err, &apiError) {
keysAndValues = append(keysAndValues, "err", err)
logger.Info(msg, keysAndValues...)
} else {
logger.Error(err, msg, keysAndValues...)
}
return err
}
type apiError struct {
cause error
detail string
title string
code int
httpStatus int
}
func (e apiError) Error() string {
if e.cause == nil {
return "unknown"
}
return e.cause.Error()
}
func (e apiError) Unwrap() error {
return e.cause
}
func (e apiError) Detail() string {
return e.detail
}
func (e apiError) Title() string {
return e.title
}
func (e apiError) Code() int {
return e.code
}
func (e apiError) HttpStatus() int {
return e.httpStatus
}
type UnprocessableEntityError struct {
apiError
}
func NewUnprocessableEntityError(cause error, detail string) UnprocessableEntityError {
return UnprocessableEntityError{
apiError{
cause: cause,
title: "CF-UnprocessableEntity",
detail: detail,
code: 10008,
httpStatus: http.StatusUnprocessableEntity,
},
}
}
type MessageParseError struct {
apiError
}
func NewMessageParseError(cause error) MessageParseError {
return MessageParseError{
apiError{
cause: cause,
title: "CF-MessageParseError",
detail: "Request invalid due to parse error: invalid request body",
code: 1001,
httpStatus: http.StatusBadRequest,
},
}
}
// UnknownError is a generic wrapper over an error Korifi cannot recover from.
// Unknown errors should be only used by the presentation layer to present such
// an error to the user. Other components (handlers, repositories, etc.) should
// simply return the incoming error, it would be mapped to `UnknownError` by
// the presentation layer
type UnknownError struct {
apiError
}
// NewUnknownError creates an UnknownError. One should generally not create
// unknown errors as generic errors are automatically presented as unknown
// errors to the user
func NewUnknownError(cause error) UnknownError {
return UnknownError{
apiError{
cause: cause,
title: "UnknownError",
detail: "An unknown error occurred.",
code: 10001,
httpStatus: http.StatusInternalServerError,
},
}
}
type NotFoundError struct {
apiError
}
func NewNotFoundError(cause error, resourceType string) NotFoundError {
return NotFoundError{
apiError{
cause: cause,
title: "CF-ResourceNotFound",
detail: fmt.Sprintf("%s not found. Ensure it exists and you have access to it.", resourceType),
code: 10010,
httpStatus: http.StatusNotFound,
},
}
}
type InvalidAuthError struct {
apiError
}
func NewInvalidAuthError(cause error) InvalidAuthError {
return InvalidAuthError{
apiError{
cause: cause,
title: "CF-InvalidAuthToken",
detail: "Invalid Auth Token",
code: 1000,
httpStatus: http.StatusUnauthorized,
},
}
}
type NotAuthenticatedError struct {
apiError
}
func NewNotAuthenticatedError(cause error) NotAuthenticatedError {
return NotAuthenticatedError{
apiError{
cause: cause,
title: "CF-NotAuthenticated",
detail: "Authentication error",
code: 10002,
httpStatus: http.StatusUnauthorized,
},
}
}
type ForbiddenError struct {
apiError
resourceType string
}
func (e ForbiddenError) ResourceType() string {
return e.resourceType
}
func NewForbiddenError(cause error, resourceType string) ForbiddenError {
return ForbiddenError{
apiError: apiError{
cause: cause,
title: "CF-NotAuthorized",
detail: "You are not authorized to perform the requested action",
code: 10003,
httpStatus: http.StatusForbidden,
},
resourceType: resourceType,
}
}
type UnknownKeyError struct {
apiError
}
func NewUnknownKeyError(cause error, validKeys []string) UnknownKeyError {
return UnknownKeyError{
apiError: apiError{
cause: cause,
title: "CF-BadQueryParameter",
detail: fmt.Sprintf("The query parameter is invalid: Valid parameters are: '%s'", strings.Join(validKeys, ", ")),
code: 10005,
httpStatus: http.StatusBadRequest,
},
}
}
type UniquenessError struct {
apiError
}
func NewUniquenessError(cause error, detail string) UniquenessError {
return UniquenessError{
apiError: apiError{
cause: cause,
title: "CF-UniquenessError",
detail: detail,
code: 10016,
httpStatus: http.StatusUnprocessableEntity,
},
}
}
type InvalidRequestError struct {
apiError
}
func NewInvalidRequestError(cause error, detail string) InvalidRequestError {
return InvalidRequestError{
apiError: apiError{
cause: cause,
title: "CF-InvalidRequest",
detail: detail,
code: 10004,
httpStatus: http.StatusBadRequest,
},
}
}
type PackageBitsAlreadyUploadedError struct {
apiError
}
func NewPackageBitsAlreadyUploadedError(cause error) PackageBitsAlreadyUploadedError {
return PackageBitsAlreadyUploadedError{
apiError: apiError{
cause: cause,
title: "CF-PackageBitsAlreadyUploaded",
detail: "Bits may be uploaded only once. Create a new package to upload different bits.",
code: 150004,
httpStatus: http.StatusBadRequest,
},
}
}
func FromK8sError(err error, resourceType string) error {
if webhookValidationError, ok := webhooks.WebhookErrorToValidationError(err); ok {
return NewUnprocessableEntityError(err, webhookValidationError.GetMessage())
}
switch {
case k8serrors.IsUnauthorized(err):
return NewInvalidAuthError(err)
case k8serrors.IsNotFound(err):
return NewNotFoundError(err, resourceType)
case k8serrors.IsForbidden(err):
return NewForbiddenError(err, resourceType)
default:
return err
}
}
func AsUnprocessableEntity(err error, detail string, errTypes ...ApiError) error {
if err == nil {
return nil
}
for i := range errTypes {
// At this point in time the errors in the errType array are downgraded
// to `ApiError`. This means that pointers to api errors that only
// embed `apiError` are assignable to each other. Therefore `errors.As`
// would return `true` and would change the initial value type of the
// array entry. That is why we need to get the "desiredType" first and
// compare it to the type that has been set by `errors.As`
desiredErrType := reflect.ValueOf(errTypes[i]).Type()
if !errors.As(err, &errTypes[i]) {
continue
}
asErrType := reflect.ValueOf(errTypes[i]).Type()
if asErrType != desiredErrType {
continue
}
return NewUnprocessableEntityError(errTypes[i].Unwrap(), detail)
}
return err
}
func ForbiddenAsNotFound(err error) error {
var forbiddenErr ForbiddenError
if errors.As(err, &forbiddenErr) {
return NewNotFoundError(forbiddenErr.Unwrap(), forbiddenErr.ResourceType())
}
return err
}
// DropletForbiddenAsNotFound is a special case due to the CF CLI expecting the error message "Droplet not found" exactly instead of the generic case
// https://github.com/cloudfoundry/korifi/issues/965
func DropletForbiddenAsNotFound(err error) error {
var forbiddenErr ForbiddenError
if errors.As(err, &forbiddenErr) {
return NotFoundError{
apiError{
cause: forbiddenErr.Unwrap(),
title: "CF-ResourceNotFound",
detail: "Droplet not found",
code: 10010,
httpStatus: http.StatusNotFound,
},
}
}
var notFoundErr NotFoundError
if errors.As(err, ¬FoundErr) {
return NotFoundError{
apiError{
cause: notFoundErr.Unwrap(),
title: "CF-ResourceNotFound",
detail: "Droplet not found",
code: 10010,
httpStatus: http.StatusNotFound,
},
}
}
return err
}