1
|
|
|
package cmd |
2
|
|
|
|
3
|
|
|
import ( |
4
|
|
|
"context" |
5
|
|
|
"fmt" |
6
|
|
|
"net/url" |
7
|
|
|
"os" |
8
|
|
|
"sort" |
9
|
|
|
"strings" |
10
|
|
|
|
11
|
|
|
"google.golang.org/protobuf/types/known/structpb" |
12
|
|
|
|
13
|
|
|
"github.com/gookit/color" |
14
|
|
|
"github.com/rs/xid" |
15
|
|
|
"github.com/spf13/cobra" |
16
|
|
|
|
17
|
|
|
"github.com/Permify/permify/internal/storage" |
18
|
|
|
serverValidation "github.com/Permify/permify/internal/validation" |
19
|
|
|
"github.com/Permify/permify/pkg/attribute" |
20
|
|
|
"github.com/Permify/permify/pkg/database" |
21
|
|
|
"github.com/Permify/permify/pkg/development" |
22
|
|
|
"github.com/Permify/permify/pkg/development/file" |
23
|
|
|
"github.com/Permify/permify/pkg/dsl/compiler" |
24
|
|
|
"github.com/Permify/permify/pkg/dsl/parser" |
25
|
|
|
base "github.com/Permify/permify/pkg/pb/base/v1" |
26
|
|
|
"github.com/Permify/permify/pkg/schema" |
27
|
|
|
"github.com/Permify/permify/pkg/token" |
28
|
|
|
"github.com/Permify/permify/pkg/tuple" |
29
|
|
|
) |
30
|
|
|
|
31
|
|
|
// NewValidateCommand - creates a new validate command |
32
|
|
|
func NewValidateCommand() *cobra.Command { |
33
|
|
|
command := &cobra.Command{ |
34
|
|
|
Use: "validate <file>", |
35
|
|
|
Short: "validate authorization model with assertions", |
36
|
|
|
RunE: validate(), |
37
|
|
|
Args: cobra.ExactArgs(1), |
38
|
|
|
} |
39
|
|
|
|
40
|
|
|
return command |
41
|
|
|
} |
42
|
|
|
|
43
|
|
|
// ErrList - error list |
44
|
|
|
type ErrList struct { |
45
|
|
|
Errors []string |
46
|
|
|
} |
47
|
|
|
|
48
|
|
|
// Add - add error to error list |
49
|
|
|
func (l *ErrList) Add(message string) { |
50
|
|
|
l.Errors = append(l.Errors, message) |
51
|
|
|
} |
52
|
|
|
|
53
|
|
|
// Print - print error list |
54
|
|
|
func (l *ErrList) Print() { |
55
|
|
|
color.Danger.Println("fails:") |
56
|
|
|
for _, m := range l.Errors { |
57
|
|
|
// print error message with color danger |
58
|
|
|
color.Danger.Println(strings.ToLower("fail: " + validationError(strings.Replace(strings.Replace(m, "ERROR_CODE_", "", -1), "_", " ", -1)))) |
59
|
|
|
} |
60
|
|
|
// print FAILED with color danger |
61
|
|
|
color.Danger.Println("FAILED") |
62
|
|
|
} |
63
|
|
|
|
64
|
|
|
// validate returns a function that validates authorization model with assertions |
65
|
|
|
func validate() func(cmd *cobra.Command, args []string) error { |
66
|
|
|
return func(cmd *cobra.Command, args []string) error { |
67
|
|
|
// create an empty error list |
68
|
|
|
list := &ErrList{ |
69
|
|
|
Errors: []string{}, |
70
|
|
|
} |
71
|
|
|
|
72
|
|
|
// create a new context |
73
|
|
|
ctx := context.Background() |
74
|
|
|
|
75
|
|
|
// create a new development container |
76
|
|
|
dev := development.NewContainer() |
77
|
|
|
|
78
|
|
|
// parse the url from the first argument |
79
|
|
|
u, err := url.Parse(args[0]) |
80
|
|
|
if err != nil { |
81
|
|
|
return err |
82
|
|
|
} |
83
|
|
|
|
84
|
|
|
// create a new decoder from the url |
85
|
|
|
decoder, err := file.NewDecoderFromURL(u) |
86
|
|
|
if err != nil { |
87
|
|
|
return err |
88
|
|
|
} |
89
|
|
|
|
90
|
|
|
// create a new shape |
91
|
|
|
s := &file.Shape{} |
92
|
|
|
|
93
|
|
|
// decode the schema from the decoder |
94
|
|
|
err = decoder.Decode(s) |
95
|
|
|
if err != nil { |
96
|
|
|
return err |
97
|
|
|
} |
98
|
|
|
|
99
|
|
|
// if debug is true, print schema is creating with color blue |
100
|
|
|
color.Notice.Println("schema is creating... 🚀") |
101
|
|
|
|
102
|
|
|
loader := schema.NewSchemaLoader() |
103
|
|
|
loaded, err := loader.LoadSchema(s.Schema) |
104
|
|
|
if err != nil { |
105
|
|
|
return err |
106
|
|
|
} |
107
|
|
|
|
108
|
|
|
sch, err := parser.NewParser(loaded).Parse() |
109
|
|
|
if err != nil { |
110
|
|
|
return err |
111
|
|
|
} |
112
|
|
|
|
113
|
|
|
_, _, err = compiler.NewCompiler(true, sch).Compile() |
114
|
|
|
if err != nil { |
115
|
|
|
return err |
116
|
|
|
} |
117
|
|
|
|
118
|
|
|
version := xid.New().String() |
119
|
|
|
|
120
|
|
|
cnf := make([]storage.SchemaDefinition, 0, len(sch.Statements)) |
121
|
|
|
for _, st := range sch.Statements { |
122
|
|
|
cnf = append(cnf, storage.SchemaDefinition{ |
123
|
|
|
TenantID: "t1", |
124
|
|
|
Version: version, |
125
|
|
|
Name: st.GetName(), |
126
|
|
|
SerializedDefinition: []byte(st.String()), |
127
|
|
|
}) |
128
|
|
|
} |
129
|
|
|
|
130
|
|
|
// write the schema |
131
|
|
|
err = dev.Container.SW.WriteSchema(ctx, cnf) |
132
|
|
|
if err != nil { |
133
|
|
|
list.Add(err.Error()) |
134
|
|
|
color.Danger.Printf("fail: %s\n", validationError(err.Error())) |
135
|
|
|
if len(list.Errors) != 0 { |
136
|
|
|
list.Print() |
137
|
|
|
os.Exit(1) |
138
|
|
|
} |
139
|
|
|
} |
140
|
|
|
|
141
|
|
|
// if there are no errors and debug is true, print success with color success |
142
|
|
|
if len(list.Errors) == 0 { |
143
|
|
|
color.Success.Println(" success") |
144
|
|
|
} |
145
|
|
|
|
146
|
|
|
// if debug is true, print relationships are creating with color blue |
147
|
|
|
color.Notice.Println("relationships are creating... 🚀") |
148
|
|
|
|
149
|
|
|
// Iterate over all relationships in the subject |
150
|
|
|
for _, t := range s.Relationships { |
151
|
|
|
// Convert each relationship to a Tuple |
152
|
|
|
var tup *base.Tuple |
153
|
|
|
tup, err = tuple.Tuple(t) |
154
|
|
|
// If an error occurs during the conversion, add the error message to the list and continue to the next iteration |
155
|
|
|
if err != nil { |
156
|
|
|
list.Add(err.Error()) |
157
|
|
|
continue |
158
|
|
|
} |
159
|
|
|
|
160
|
|
|
// Retrieve the entity definition associated with the tuple's entity type |
161
|
|
|
definition, _, err := dev.Container.SR.ReadEntityDefinition(ctx, "t1", tup.GetEntity().GetType(), version) |
162
|
|
|
// If an error occurs while reading the entity definition, return the error |
163
|
|
|
if err != nil { |
164
|
|
|
return err |
165
|
|
|
} |
166
|
|
|
|
167
|
|
|
// Validate the tuple using the entity definition |
168
|
|
|
err = serverValidation.ValidateTuple(definition, tup) |
169
|
|
|
// If an error occurs during validation, return the error |
170
|
|
|
if err != nil { |
171
|
|
|
return err |
172
|
|
|
} |
173
|
|
|
|
174
|
|
|
// Write the validated tuple to the database |
175
|
|
|
_, err = dev.Container.DW.Write(ctx, "t1", database.NewTupleCollection(tup), database.NewAttributeCollection()) |
176
|
|
|
// If an error occurs while writing to the database, add an error message to the list, log the error and continue to the next iteration |
177
|
|
|
if err != nil { |
178
|
|
|
list.Add(fmt.Sprintf("%s failed %s", t, err.Error())) |
179
|
|
|
color.Danger.Println(fmt.Sprintf("fail: %s failed %s", t, validationError(err.Error()))) |
180
|
|
|
continue |
181
|
|
|
} |
182
|
|
|
|
183
|
|
|
// If the tuple was successfully written to the database, log a success message |
184
|
|
|
color.Success.Println(fmt.Sprintf(" success: %s ", t)) |
185
|
|
|
} |
186
|
|
|
|
187
|
|
|
// if debug is true, print attributes are creating with color blue |
188
|
|
|
color.Notice.Println("attributes are creating... 🚀") |
189
|
|
|
|
190
|
|
|
// Iterate over all attributes in the subject |
191
|
|
|
for _, a := range s.Attributes { |
192
|
|
|
// Convert each attribute to an Attribute |
193
|
|
|
var attr *base.Attribute |
194
|
|
|
attr, err = attribute.Attribute(a) |
195
|
|
|
// If an error occurs during the conversion, add the error message to the list and continue to the next iteration |
196
|
|
|
if err != nil { |
197
|
|
|
list.Add(err.Error()) |
198
|
|
|
continue |
199
|
|
|
} |
200
|
|
|
|
201
|
|
|
// Retrieve the entity definition associated with the attribute's entity type |
202
|
|
|
definition, _, err := dev.Container.SR.ReadEntityDefinition(ctx, "t1", attr.GetEntity().GetType(), version) |
203
|
|
|
// If an error occurs while reading the entity definition, return the error |
204
|
|
|
if err != nil { |
205
|
|
|
return err |
206
|
|
|
} |
207
|
|
|
|
208
|
|
|
// Validate the attribute using the entity definition |
209
|
|
|
err = serverValidation.ValidateAttribute(definition, attr) |
210
|
|
|
// If an error occurs during validation, return the error |
211
|
|
|
if err != nil { |
212
|
|
|
return err |
213
|
|
|
} |
214
|
|
|
|
215
|
|
|
// Write the validated attribute to the database |
216
|
|
|
_, err = dev.Container.DW.Write(ctx, "t1", database.NewTupleCollection(), database.NewAttributeCollection(attr)) |
217
|
|
|
// If an error occurs while writing to the database, add an error message to the list, log the error and continue to the next iteration |
218
|
|
|
if err != nil { |
219
|
|
|
list.Add(fmt.Sprintf("%s failed %s", a, err.Error())) |
220
|
|
|
color.Danger.Println(fmt.Sprintf("fail: %s failed %s", a, validationError(err.Error()))) |
221
|
|
|
continue |
222
|
|
|
} |
223
|
|
|
|
224
|
|
|
// If the attribute was successfully written to the database, log a success message |
225
|
|
|
color.Success.Println(fmt.Sprintf(" success: %s ", a)) |
226
|
|
|
} |
227
|
|
|
|
228
|
|
|
// if debug is true, print checking assertions with color blue |
229
|
|
|
color.Notice.Println("checking scenarios... 🚀") |
230
|
|
|
|
231
|
|
|
// Check Assertions |
232
|
|
|
for sn, scenario := range s.Scenarios { |
233
|
|
|
color.Notice.Printf("%v.scenario: %s - %s\n", sn+1, scenario.Name, scenario.Description) |
234
|
|
|
|
235
|
|
|
// Start log output for checks |
236
|
|
|
color.Notice.Println(" checks:") |
237
|
|
|
|
238
|
|
|
// Iterate over all checks in the scenario |
239
|
|
|
for _, check := range scenario.Checks { |
240
|
|
|
// Extract entity from the check |
241
|
|
|
entity, err := tuple.E(check.Entity) |
242
|
|
|
if err != nil { |
243
|
|
|
list.Add(err.Error()) |
244
|
|
|
continue |
245
|
|
|
} |
246
|
|
|
|
247
|
|
|
// Extract entity-attribute-relation from the check's subject |
248
|
|
|
ear, err := tuple.EAR(check.Subject) |
249
|
|
|
if err != nil { |
250
|
|
|
list.Add(err.Error()) |
251
|
|
|
continue |
252
|
|
|
} |
253
|
|
|
|
254
|
|
|
// Define the subject based on the extracted entity-attribute-relation |
255
|
|
|
subject := &base.Subject{ |
256
|
|
|
Type: ear.GetEntity().GetType(), |
257
|
|
|
Id: ear.GetEntity().GetId(), |
258
|
|
|
Relation: ear.GetRelation(), |
259
|
|
|
} |
260
|
|
|
|
261
|
|
|
cont, err := Context(check.Context) |
262
|
|
|
if err != nil { |
263
|
|
|
list.Add(err.Error()) |
264
|
|
|
continue |
265
|
|
|
} |
266
|
|
|
|
267
|
|
|
// Iterate over all assertions in the check |
268
|
|
|
for permission, expected := range check.Assertions { |
269
|
|
|
// Set expected result based on the assertion |
270
|
|
|
exp := base.CheckResult_CHECK_RESULT_ALLOWED |
271
|
|
|
if !expected { |
272
|
|
|
exp = base.CheckResult_CHECK_RESULT_DENIED |
273
|
|
|
} |
274
|
|
|
|
275
|
|
|
// Perform a permission check based on the context, entity, permission, and subject |
276
|
|
|
res, err := dev.Container.Invoker.Check(ctx, &base.PermissionCheckRequest{ |
277
|
|
|
TenantId: "t1", |
278
|
|
|
Context: cont, |
279
|
|
|
Metadata: &base.PermissionCheckRequestMetadata{ |
280
|
|
|
SchemaVersion: version, |
281
|
|
|
SnapToken: token.NewNoopToken().Encode().String(), |
282
|
|
|
Depth: 100, |
283
|
|
|
}, |
284
|
|
|
Entity: entity, |
285
|
|
|
Permission: permission, |
286
|
|
|
Subject: subject, |
287
|
|
|
}) |
288
|
|
|
if err != nil { |
289
|
|
|
list.Add(err.Error()) |
290
|
|
|
continue |
291
|
|
|
} |
292
|
|
|
|
293
|
|
|
// Formulate the query string for log output |
294
|
|
|
query := tuple.SubjectToString(subject) + " " + permission + " " + tuple.EntityToString(entity) |
295
|
|
|
|
296
|
|
|
// If the check result matches the expected result, log a success message |
297
|
|
|
if res.Can == exp { |
298
|
|
|
color.Success.Print(" success:") |
299
|
|
|
fmt.Printf(" %s \n", query) |
300
|
|
|
} else { |
301
|
|
|
// If the check result does not match the expected result, log a failure message |
302
|
|
|
color.Danger.Printf(" fail: %s ->", query) |
303
|
|
|
if res.Can == base.CheckResult_CHECK_RESULT_ALLOWED { |
304
|
|
|
color.Danger.Println(" expected: DENIED actual: ALLOWED ") |
305
|
|
|
list.Add(fmt.Sprintf("%s -> expected: DENIED actual: ALLOWED ", query)) |
306
|
|
|
} else { |
307
|
|
|
color.Danger.Println(" expected: ALLOWED actual: DENIED ") |
308
|
|
|
list.Add(fmt.Sprintf("%s -> expected: ALLOWED actual: DENIED ", query)) |
309
|
|
|
} |
310
|
|
|
} |
311
|
|
|
} |
312
|
|
|
} |
313
|
|
|
|
314
|
|
|
// Start of the entity filter processing. |
315
|
|
|
color.Notice.Println(" entity_filters:") |
316
|
|
|
|
317
|
|
|
// Iterate over each entity filter in the scenario. |
318
|
|
|
for _, filter := range scenario.EntityFilters { |
319
|
|
|
|
320
|
|
|
// Convert the subject from the filter into a base.Subject. |
321
|
|
|
ear, err := tuple.EAR(filter.Subject) |
322
|
|
|
if err != nil { |
323
|
|
|
// If an error occurs, add it to the list and continue to the next filter. |
324
|
|
|
list.Add(err.Error()) |
325
|
|
|
continue |
326
|
|
|
} |
327
|
|
|
|
328
|
|
|
// Create a new base.Subject from the Entity-Attribute-Relation (EAR). |
329
|
|
|
subject := &base.Subject{ |
330
|
|
|
Type: ear.GetEntity().GetType(), |
331
|
|
|
Id: ear.GetEntity().GetId(), |
332
|
|
|
Relation: ear.GetRelation(), |
333
|
|
|
} |
334
|
|
|
|
335
|
|
|
// Convert the filter context into a base.Context. |
336
|
|
|
cont, err := Context(filter.Context) |
337
|
|
|
if err != nil { |
338
|
|
|
// If an error occurs, add it to the list and continue to the next filter. |
339
|
|
|
list.Add(err.Error()) |
340
|
|
|
continue |
341
|
|
|
} |
342
|
|
|
|
343
|
|
|
// Iterate over each assertion in the filter. |
344
|
|
|
for permission, expected := range filter.Assertions { |
345
|
|
|
// Perform a permission lookup for the entity. |
346
|
|
|
res, err := dev.Container.Invoker.LookupEntity(ctx, &base.PermissionLookupEntityRequest{ |
347
|
|
|
TenantId: "t1", |
348
|
|
|
Context: cont, |
349
|
|
|
Metadata: &base.PermissionLookupEntityRequestMetadata{ |
350
|
|
|
SchemaVersion: version, |
351
|
|
|
SnapToken: token.NewNoopToken().Encode().String(), |
352
|
|
|
Depth: 100, |
353
|
|
|
}, |
354
|
|
|
EntityType: filter.EntityType, |
355
|
|
|
Permission: permission, |
356
|
|
|
Subject: subject, |
357
|
|
|
}) |
358
|
|
|
if err != nil { |
359
|
|
|
// If an error occurs, add it to the list and continue to the next assertion. |
360
|
|
|
list.Add(err.Error()) |
361
|
|
|
continue |
362
|
|
|
} |
363
|
|
|
|
364
|
|
|
// Format the subject, permission, and entity type as a string for logging. |
365
|
|
|
query := tuple.SubjectToString(subject) + " " + permission + " " + filter.EntityType |
366
|
|
|
|
367
|
|
|
// Check if the actual result matches the expected result. |
368
|
|
|
if isSameArray(res.GetEntityIds(), expected) { |
369
|
|
|
// If the results match, log a success message. |
370
|
|
|
color.Success.Print(" success:") |
371
|
|
|
fmt.Printf(" %v\n", query) |
372
|
|
|
} else { |
373
|
|
|
// If the results don't match, log a failure message with the expected and actual results. |
374
|
|
|
color.Danger.Printf(" fail: %s -> expected: %+v actual: %+v\n", query, expected, res.GetEntityIds()) |
375
|
|
|
list.Add(fmt.Sprintf("%s -> expected: %+v actual: %+v", query, expected, res.GetEntityIds())) |
376
|
|
|
} |
377
|
|
|
} |
378
|
|
|
} |
379
|
|
|
|
380
|
|
|
// Print a message indicating the start of the subject filter processing. |
381
|
|
|
color.Notice.Println(" subject_filters:") |
382
|
|
|
|
383
|
|
|
// Iterate over each subject filter in the scenario. |
384
|
|
|
for _, filter := range scenario.SubjectFilters { |
385
|
|
|
|
386
|
|
|
// Convert the subject reference from the filter into a relation reference. |
387
|
|
|
subjectReference := tuple.RelationReference(filter.SubjectReference) |
388
|
|
|
|
389
|
|
|
// Convert the entity from the filter into a base.Entity. |
390
|
|
|
var entity *base.Entity |
391
|
|
|
entity, err = tuple.E(filter.Entity) |
392
|
|
|
if err != nil { |
393
|
|
|
// If an error occurs, add it to the list and continue to the next filter. |
394
|
|
|
list.Add(err.Error()) |
395
|
|
|
continue |
396
|
|
|
} |
397
|
|
|
|
398
|
|
|
// Convert the filter context into a base.Context. |
399
|
|
|
cont, err := Context(filter.Context) |
400
|
|
|
if err != nil { |
401
|
|
|
// If an error occurs, add it to the list and continue to the next filter. |
402
|
|
|
list.Add(err.Error()) |
403
|
|
|
continue |
404
|
|
|
} |
405
|
|
|
|
406
|
|
|
// Iterate over each assertion in the filter. |
407
|
|
|
for permission, expected := range filter.Assertions { |
408
|
|
|
// Perform a permission lookup for the subject. |
409
|
|
|
res, err := dev.Container.Invoker.LookupSubject(ctx, &base.PermissionLookupSubjectRequest{ |
410
|
|
|
TenantId: "t1", |
411
|
|
|
Context: cont, |
412
|
|
|
Metadata: &base.PermissionLookupSubjectRequestMetadata{ |
413
|
|
|
SchemaVersion: version, |
414
|
|
|
SnapToken: token.NewNoopToken().Encode().String(), |
415
|
|
|
Depth: 100, |
416
|
|
|
}, |
417
|
|
|
SubjectReference: subjectReference, |
418
|
|
|
Permission: permission, |
419
|
|
|
Entity: entity, |
420
|
|
|
}) |
421
|
|
|
if err != nil { |
422
|
|
|
// If an error occurs, add it to the list and continue to the next assertion. |
423
|
|
|
list.Add(err.Error()) |
424
|
|
|
continue |
425
|
|
|
} |
426
|
|
|
|
427
|
|
|
// Format the entity, permission, and subject reference as a string for logging. |
428
|
|
|
query := tuple.EntityToString(entity) + " " + permission + " " + filter.SubjectReference |
429
|
|
|
|
430
|
|
|
// Check if the actual result matches the expected result. |
431
|
|
|
if isSameArray(res.GetSubjectIds(), expected) { |
432
|
|
|
// If the results match, log a success message. |
433
|
|
|
color.Success.Print(" success:") |
434
|
|
|
fmt.Printf(" %v\n", query) |
435
|
|
|
} else { |
436
|
|
|
// If the results don't match, log a failure message with the expected and actual results. |
437
|
|
|
color.Danger.Printf(" fail: %s -> expected: %+v actual: %+v\n", query, expected, res.GetSubjectIds()) |
438
|
|
|
list.Add(fmt.Sprintf("%s -> expected: %+v actual: %+v", query, expected, res.GetSubjectIds())) |
439
|
|
|
} |
440
|
|
|
} |
441
|
|
|
} |
442
|
|
|
} |
443
|
|
|
|
444
|
|
|
// If the error list is not empty, there were some errors during processing. |
445
|
|
|
if len(list.Errors) != 0 { |
446
|
|
|
// Print the errors collected during processing. |
447
|
|
|
list.Print() |
448
|
|
|
// Exit the program with a status of 1 to indicate an error. |
449
|
|
|
os.Exit(1) |
450
|
|
|
} |
451
|
|
|
|
452
|
|
|
// If there are no errors, print the success messages. |
453
|
|
|
color.Notice.Println("schema successfully created") |
454
|
|
|
color.Notice.Println("relationships successfully created") |
455
|
|
|
color.Notice.Println("assertions successfully passed") |
456
|
|
|
|
457
|
|
|
// Final success message to indicate everything completed successfully. |
458
|
|
|
color.Success.Println("SUCCESS") |
459
|
|
|
|
460
|
|
|
return nil |
461
|
|
|
} |
462
|
|
|
} |
463
|
|
|
|
464
|
|
|
// validationError - validation error |
465
|
|
|
func validationError(message string) string { |
466
|
|
|
return strings.ToLower(strings.Replace(strings.Replace(message, "ERROR_CODE_", "", -1), "_", " ", -1)) |
467
|
|
|
} |
468
|
|
|
|
469
|
|
|
// isSameArray - check if two arrays are the same |
470
|
|
|
func isSameArray(a, b []string) bool { |
471
|
|
|
if len(a) != len(b) { |
472
|
|
|
return false |
473
|
|
|
} |
474
|
|
|
|
475
|
|
|
sortedA := make([]string, len(a)) |
476
|
|
|
copy(sortedA, a) |
477
|
|
|
sort.Strings(sortedA) |
478
|
|
|
|
479
|
|
|
sortedB := make([]string, len(b)) |
480
|
|
|
copy(sortedB, b) |
481
|
|
|
sort.Strings(sortedB) |
482
|
|
|
|
483
|
|
|
for i := range sortedA { |
484
|
|
|
if sortedA[i] != sortedB[i] { |
485
|
|
|
return false |
486
|
|
|
} |
487
|
|
|
} |
488
|
|
|
|
489
|
|
|
return true |
490
|
|
|
} |
491
|
|
|
|
492
|
|
|
// Context is a function that takes a file context and returns a base context and an error. |
493
|
|
|
func Context(fileContext file.Context) (cont *base.Context, err error) { |
494
|
|
|
// Initialize an empty base context to be populated from the file context. |
495
|
|
|
cont = &base.Context{ |
496
|
|
|
Tuples: []*base.Tuple{}, |
497
|
|
|
Attributes: []*base.Attribute{}, |
498
|
|
|
Data: nil, |
499
|
|
|
} |
500
|
|
|
|
501
|
|
|
// Convert the file context's data to a Struct object. |
502
|
|
|
st, err := structpb.NewStruct(fileContext.Data) |
503
|
|
|
if err != nil { |
504
|
|
|
// If an error occurs, return it. |
505
|
|
|
return nil, err |
506
|
|
|
} |
507
|
|
|
|
508
|
|
|
// Assign the Struct object to the context's data field. |
509
|
|
|
cont.Data = st |
510
|
|
|
|
511
|
|
|
// Iterate over the file context's tuples. |
512
|
|
|
for _, t := range fileContext.Tuples { |
513
|
|
|
// Convert each tuple to a base tuple. |
514
|
|
|
tup, err := tuple.Tuple(t) |
515
|
|
|
if err != nil { |
516
|
|
|
// If an error occurs, return it. |
517
|
|
|
return nil, err |
518
|
|
|
} |
519
|
|
|
|
520
|
|
|
// Add the converted tuple to the context's tuples slice. |
521
|
|
|
cont.Tuples = append(cont.Tuples, tup) |
522
|
|
|
} |
523
|
|
|
|
524
|
|
|
// Iterate over the file context's attributes. |
525
|
|
|
for _, t := range fileContext.Attributes { |
526
|
|
|
// Convert each attribute to a base attribute. |
527
|
|
|
attr, err := attribute.Attribute(t) |
528
|
|
|
if err != nil { |
529
|
|
|
// If an error occurs, return it. |
530
|
|
|
return nil, err |
531
|
|
|
} |
532
|
|
|
|
533
|
|
|
// Add the converted attribute to the context's attributes slice. |
534
|
|
|
cont.Attributes = append(cont.Attributes, attr) |
535
|
|
|
} |
536
|
|
|
|
537
|
|
|
// If everything goes well, return the context and a nil error. |
538
|
|
|
return cont, nil |
539
|
|
|
} |
540
|
|
|
|