-
Notifications
You must be signed in to change notification settings - Fork 0
/
context.go
280 lines (245 loc) · 7.15 KB
/
context.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
package libyango
/*
#cgo LDFLAGS: -lyang
#include <libyang/libyang.h>
LY_ERR _cgo_ly_module_import_cb(const char *mod_name, const char *mod_rev, const char *submod_name, const char *submod_rev,
void *user_data, LYS_INFORMAT *format, const char **module_data, ly_module_imp_data_free_clb *free_module_data);
*/
import "C"
import (
"encoding/binary"
"fmt"
"reflect"
"unsafe"
)
const (
LY_CTX_ALL_IMPLEMENTED uint16 = 1 << iota
LY_CTX_REF_IMPLEMENTED
LY_CTX_NO_YANGLIBRARY
LY_CTX_DISABLE_SEARCHDIRS
LY_CTX_DISABLE_SEARCHDIR_CWD
)
type Context struct {
raw *C.struct_ly_ctx
}
type EmbeddedMoudleKey struct {
mod_name string
mod_rev string
submod_name string
submod_rev string
}
type EmbeddedModules = map[EmbeddedMoudleKey]string
func CreateContext(options uint16) (*Context, error) {
var ctx *C.struct_ly_ctx
ctxp := &ctx
ret := C.ly_ctx_new(nil, C.uint16_t(options), ctxp)
if ret != C.LY_SUCCESS {
return nil, fmt.Errorf("create context failed, error code: %d", ret)
}
return &Context{
raw: ctx,
}, nil
}
func DestroyContext(ctx *Context) {
C.ly_ctx_destroy(ctx.raw)
}
func (ctx *Context) SetSearchDir(path string) error {
path_cstr := C.CString(path)
defer C.free(unsafe.Pointer(path_cstr))
if ret := C.ly_ctx_set_searchdir(ctx.raw, path_cstr); ret != C.LY_SUCCESS {
return fmt.Errorf("create context failed, error code: %d", ret)
}
return nil
}
func (ctx *Context) UnsetSearchDirs() error {
if ret := C.ly_ctx_unset_searchdir(ctx.raw, nil); ret != C.LY_SUCCESS {
return fmt.Errorf("create context failed, error code: %d", ret)
}
return nil
}
func (ctx *Context) UnsetSearchDirLast(count uint32) error {
if ret := C.ly_ctx_unset_searchdir_last(ctx.raw, C.uint(count)); ret != C.LY_SUCCESS {
return fmt.Errorf("create context failed, error code: %d", ret)
}
return nil
}
func (ctx *Context) SetEmbeddedModules(modules EmbeddedModules) {
callback_pointer := (C.ly_module_imp_clb)(unsafe.Pointer(C._cgo_ly_module_import_cb))
mp := unsafe.Pointer(&modules)
C.ly_ctx_set_module_imp_clb(ctx.raw, callback_pointer, mp)
}
func (ctx *Context) UnsetEmbededModules() {
C.ly_ctx_set_module_imp_clb(ctx.raw, nil, nil)
}
func (ctx *Context) GetOptions() uint16 {
return uint16(C.ly_ctx_get_options(ctx.raw))
}
func (ctx *Context) SetOptions(options uint16) error {
if ret := C.ly_ctx_set_options(ctx.raw, C.uint16_t(options)); ret != C.LY_SUCCESS {
return fmt.Errorf("set options error, error code: %d", ret)
}
return nil
}
func (ctx *Context) UnsetOptions(options uint16) error {
if ret := C.ly_ctx_unset_options(ctx.raw, C.uint16_t(options)); ret != C.LY_SUCCESS {
return fmt.Errorf("set options error, error code: %d", ret)
}
return nil
}
func (ctx *Context) GetModuleSetID() uint16 {
return uint16(C.ly_ctx_get_change_count(ctx.raw))
}
func (ctx *Context) GetModule(name, revision string) *SchemaModule {
n := C.CString(name)
r := C.CString(revision)
defer C.free(unsafe.Pointer(n))
defer C.free(unsafe.Pointer(r))
m := C.ly_ctx_get_module(ctx.raw, n, r)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) GetModuleLatest(name string) *SchemaModule {
n := C.CString(name)
defer C.free(unsafe.Pointer(n))
m := C.ly_ctx_get_module_latest(ctx.raw, n)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) GetModuleImplemented(name string) *SchemaModule {
n := C.CString(name)
defer C.free(unsafe.Pointer(n))
m := C.ly_ctx_get_module_implemented(ctx.raw, n)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) GetModuleNs(ns, revision string) *SchemaModule {
n := C.CString(ns)
r := C.CString(revision)
defer C.free(unsafe.Pointer(n))
defer C.free(unsafe.Pointer(r))
m := C.ly_ctx_get_module_ns(ctx.raw, n, r)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) GetModuleLatestNs(ns string) *SchemaModule {
n := C.CString(ns)
defer C.free(unsafe.Pointer(n))
m := C.ly_ctx_get_module_latest_ns(ctx.raw, n)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) GetModuleImplementedNs(ns string) *SchemaModule {
n := C.CString(ns)
defer C.free(unsafe.Pointer(n))
m := C.ly_ctx_get_module_implemented_ns(ctx.raw, n)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) Modules(skipInternal bool) *SchemaModules {
return NewSchemaModules(ctx, skipInternal)
}
// TODO traverse method, need find a way to implement iterator
func (ctx *Context) ResetLatests() {
C.ly_ctx_reset_latests(ctx.raw)
}
func (ctx *Context) InternalModuleCount() uint32 {
return uint32(C.ly_ctx_internal_modules_count(ctx.raw))
}
func (ctx *Context) LoadModule(name string, revision string, features []string) *SchemaModule {
n := C.CString(name)
r := C.CString(revision)
defer C.free(unsafe.Pointer(n))
defer C.free(unsafe.Pointer(r))
features_ptr := make([]*C.char, 0)
for k := range features {
vp := C.CString(features[k])
defer C.free(unsafe.Pointer(vp))
features_ptr = append(features_ptr, vp)
}
features_ptr = append(features_ptr, nil)
fp := (**C.char)(unsafe.Pointer(&features_ptr))
m := C.ly_ctx_load_module(ctx.raw, n, r, fp)
if m == nil {
return nil
}
return SchemaModuleFromRaw(ctx, m)
}
func (ctx *Context) FindXPath(path string) (*Set[*Context, CLyscNode], error) {
p := C.CString(path)
defer C.free(unsafe.Pointer(p))
var set *C.struct_ly_set = nil
if ret := C.lys_find_xpath(ctx.raw, nil, p, 0, &set); ret != C.LY_SUCCESS {
return nil, fmt.Errorf("find_xpath error, error code: %d", ret)
}
rnodesCount := int((*set).count)
if rnodesCount == 0 {
return NewSet[*Context, CLyscNode](ctx, nil), nil
} else {
var sp uintptr
if BigEndian {
sp = uintptr(binary.BigEndian.Uint64((*set).anon0[:]))
} else {
sp = uintptr(binary.LittleEndian.Uint64((*set).anon0[:]))
}
var s []CLyscNode
sh := (*reflect.SliceHeader)(unsafe.Pointer(&s))
sh.Data = sp
sh.Len = rnodesCount
sh.Cap = rnodesCount
return NewSet(ctx, s), nil
}
}
func (ctx *Context) FindPath(path string) (*SchemaNode, error) {
p := C.CString(path)
defer C.free(unsafe.Pointer(p))
ret := C.lys_find_path(ctx.raw, nil, p, 0)
if ret == nil {
return nil, fmt.Errorf("find_path error")
}
nodeType := uint((*ret).nodetype)
switch nodeType {
case Container, Case, Choice, Leaf, LeafList, List, AnyData, Action, Rpc, Input, Output, Notification:
default:
panic("unknown node type")
}
return &SchemaNode{
ctx: ctx,
raw: ret,
kind: nodeType,
}, nil
}
// export _cgo_ly_module_import_cb
func _cgo_ly_module_import_cb(mod_name *C.char, mod_rev *C.char, submod_name *C.char, submod_rev *C.char, user_data *C.void, format C.LYS_INFORMAT, module_data *C.char, _free_module_data *C.ly_module_imp_data_free_clb) C.LY_ERR {
mn := C.GoString(mod_name)
mrv := C.GoString(mod_rev)
smn := C.GoString(submod_name)
smrv := C.GoString(submod_rev)
m := *(*EmbeddedModules)(unsafe.Pointer(user_data))
key := EmbeddedMoudleKey{
mod_name: mn,
mod_rev: mrv,
submod_name: smn,
submod_rev: smrv,
}
v, find := m[key]
if !find {
return C.LY_ENOTFOUND
}
// leak the data on purpose
data := C.CString(v)
format = C.LYS_IN_YANG
*module_data = *data
return C.LY_SUCCESS
}