forked from zeromicro/go-zero
-
Notifications
You must be signed in to change notification settings - Fork 0
/
parser.go
391 lines (334 loc) · 9.52 KB
/
parser.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
package parser
import (
"fmt"
"sort"
"strings"
"github.com/tal-tech/go-zero/core/collection"
"github.com/tal-tech/go-zero/tools/goctl/model/sql/converter"
"github.com/tal-tech/go-zero/tools/goctl/model/sql/model"
"github.com/tal-tech/go-zero/tools/goctl/model/sql/util"
"github.com/tal-tech/go-zero/tools/goctl/util/console"
"github.com/tal-tech/go-zero/tools/goctl/util/stringx"
"github.com/xwb1989/sqlparser"
)
const timeImport = "time.Time"
type (
// Table describes a mysql table
Table struct {
Name stringx.String
PrimaryKey Primary
UniqueIndex map[string][]*Field
NormalIndex map[string][]*Field
Fields []*Field
}
// Primary describes a primary key
Primary struct {
Field
AutoIncrement bool
}
// Field describes a table field
Field struct {
Name stringx.String
DataBaseType string
DataType string
Comment string
SeqInIndex int
OrdinalPosition int
}
// KeyType types alias of int
KeyType int
)
// Parse parses ddl into golang structure
func Parse(ddl string) (*Table, error) {
stmt, err := sqlparser.ParseStrictDDL(ddl)
if err != nil {
return nil, err
}
ddlStmt, ok := stmt.(*sqlparser.DDL)
if !ok {
return nil, errUnsupportDDL
}
action := ddlStmt.Action
if action != sqlparser.CreateStr {
return nil, fmt.Errorf("expected [CREATE] action,but found: %s", action)
}
tableName := ddlStmt.NewName.Name.String()
tableSpec := ddlStmt.TableSpec
if tableSpec == nil {
return nil, errTableBodyNotFound
}
columns := tableSpec.Columns
indexes := tableSpec.Indexes
primaryColumn, uniqueKeyMap, normalKeyMap, err := convertIndexes(indexes)
if err != nil {
return nil, err
}
primaryKey, fieldM, err := convertColumns(columns, primaryColumn)
if err != nil {
return nil, err
}
var fields []*Field
for _, e := range fieldM {
fields = append(fields, e)
}
var (
uniqueIndex = make(map[string][]*Field)
normalIndex = make(map[string][]*Field)
)
for indexName, each := range uniqueKeyMap {
for _, columnName := range each {
uniqueIndex[indexName] = append(uniqueIndex[indexName], fieldM[columnName])
}
}
for indexName, each := range normalKeyMap {
for _, columnName := range each {
normalIndex[indexName] = append(normalIndex[indexName], fieldM[columnName])
}
}
checkDuplicateUniqueIndex(uniqueIndex, tableName, normalIndex)
return &Table{
Name: stringx.From(tableName),
PrimaryKey: primaryKey,
UniqueIndex: uniqueIndex,
NormalIndex: normalIndex,
Fields: fields,
}, nil
}
func checkDuplicateUniqueIndex(uniqueIndex map[string][]*Field, tableName string, normalIndex map[string][]*Field) {
log := console.NewColorConsole()
uniqueSet := collection.NewSet()
for k, i := range uniqueIndex {
var list []string
for _, e := range i {
list = append(list, e.Name.Source())
}
joinRet := strings.Join(list, ",")
if uniqueSet.Contains(joinRet) {
log.Warning("table %s: duplicate unique index %s", tableName, joinRet)
delete(uniqueIndex, k)
continue
}
uniqueSet.AddStr(joinRet)
}
normalIndexSet := collection.NewSet()
for k, i := range normalIndex {
var list []string
for _, e := range i {
list = append(list, e.Name.Source())
}
joinRet := strings.Join(list, ",")
if normalIndexSet.Contains(joinRet) {
log.Warning("table %s: duplicate index %s", tableName, joinRet)
delete(normalIndex, k)
continue
}
normalIndexSet.Add(joinRet)
}
}
func convertColumns(columns []*sqlparser.ColumnDefinition, primaryColumn string) (Primary, map[string]*Field, error) {
var (
primaryKey Primary
fieldM = make(map[string]*Field)
)
for _, column := range columns {
if column == nil {
continue
}
var comment string
if column.Type.Comment != nil {
comment = string(column.Type.Comment.Val)
}
isDefaultNull := true
if column.Type.NotNull {
isDefaultNull = false
} else {
if column.Type.Default != nil {
isDefaultNull = false
}
}
dataType, err := converter.ConvertDataType(column.Type.Type, isDefaultNull)
if err != nil {
return Primary{}, nil, err
}
var field Field
field.Name = stringx.From(column.Name.String())
field.DataBaseType = column.Type.Type
field.DataType = dataType
field.Comment = util.TrimNewLine(comment)
if field.Name.Source() == primaryColumn {
primaryKey = Primary{
Field: field,
AutoIncrement: bool(column.Type.Autoincrement),
}
}
fieldM[field.Name.Source()] = &field
}
return primaryKey, fieldM, nil
}
func convertIndexes(indexes []*sqlparser.IndexDefinition) (string, map[string][]string, map[string][]string, error) {
var primaryColumn string
uniqueKeyMap := make(map[string][]string)
normalKeyMap := make(map[string][]string)
isCreateTimeOrUpdateTime := func(name string) bool {
camelColumnName := stringx.From(name).ToCamel()
// by default, createTime|updateTime findOne is not used.
return camelColumnName == "CreateTime" || camelColumnName == "UpdateTime"
}
for _, index := range indexes {
info := index.Info
if info == nil {
continue
}
indexName := index.Info.Name.String()
if info.Primary {
if len(index.Columns) > 1 {
return "", nil, nil, errPrimaryKey
}
columnName := index.Columns[0].Column.String()
if isCreateTimeOrUpdateTime(columnName) {
continue
}
primaryColumn = columnName
continue
} else if info.Unique {
for _, each := range index.Columns {
columnName := each.Column.String()
if isCreateTimeOrUpdateTime(columnName) {
break
}
uniqueKeyMap[indexName] = append(uniqueKeyMap[indexName], columnName)
}
} else if info.Spatial {
// do nothing
} else {
for _, each := range index.Columns {
columnName := each.Column.String()
if isCreateTimeOrUpdateTime(columnName) {
break
}
normalKeyMap[indexName] = append(normalKeyMap[indexName], each.Column.String())
}
}
}
return primaryColumn, uniqueKeyMap, normalKeyMap, nil
}
// ContainsTime returns true if contains golang type time.Time
func (t *Table) ContainsTime() bool {
for _, item := range t.Fields {
if item.DataType == timeImport {
return true
}
}
return false
}
// ConvertDataType converts mysql data type into golang data type
func ConvertDataType(table *model.Table) (*Table, error) {
isPrimaryDefaultNull := table.PrimaryKey.ColumnDefault == nil && table.PrimaryKey.IsNullAble == "YES"
primaryDataType, err := converter.ConvertDataType(table.PrimaryKey.DataType, isPrimaryDefaultNull)
if err != nil {
return nil, err
}
var reply Table
reply.UniqueIndex = map[string][]*Field{}
reply.NormalIndex = map[string][]*Field{}
reply.Name = stringx.From(table.Table)
seqInIndex := 0
if table.PrimaryKey.Index != nil {
seqInIndex = table.PrimaryKey.Index.SeqInIndex
}
reply.PrimaryKey = Primary{
Field: Field{
Name: stringx.From(table.PrimaryKey.Name),
DataBaseType: table.PrimaryKey.DataType,
DataType: primaryDataType,
Comment: table.PrimaryKey.Comment,
SeqInIndex: seqInIndex,
OrdinalPosition: table.PrimaryKey.OrdinalPosition,
},
AutoIncrement: strings.Contains(table.PrimaryKey.Extra, "auto_increment"),
}
fieldM, err := getTableFields(table)
if err != nil {
return nil, err
}
for _, each := range fieldM {
reply.Fields = append(reply.Fields, each)
}
sort.Slice(reply.Fields, func(i, j int) bool {
return reply.Fields[i].OrdinalPosition < reply.Fields[j].OrdinalPosition
})
uniqueIndexSet := collection.NewSet()
log := console.NewColorConsole()
for indexName, each := range table.UniqueIndex {
sort.Slice(each, func(i, j int) bool {
if each[i].Index != nil {
return each[i].Index.SeqInIndex < each[j].Index.SeqInIndex
}
return false
})
if len(each) == 1 {
one := each[0]
if one.Name == table.PrimaryKey.Name {
log.Warning("table %s: duplicate unique index with primary key, %s", table.Table, one.Name)
continue
}
}
var list []*Field
var uniqueJoin []string
for _, c := range each {
list = append(list, fieldM[c.Name])
uniqueJoin = append(uniqueJoin, c.Name)
}
uniqueKey := strings.Join(uniqueJoin, ",")
if uniqueIndexSet.Contains(uniqueKey) {
log.Warning("table %s: duplicate unique index, %s", table.Table, uniqueKey)
continue
}
uniqueIndexSet.AddStr(uniqueKey)
reply.UniqueIndex[indexName] = list
}
normalIndexSet := collection.NewSet()
for indexName, each := range table.NormalIndex {
var list []*Field
var normalJoin []string
for _, c := range each {
list = append(list, fieldM[c.Name])
normalJoin = append(normalJoin, c.Name)
}
normalKey := strings.Join(normalJoin, ",")
if normalIndexSet.Contains(normalKey) {
log.Warning("table %s: duplicate index, %s", table.Table, normalKey)
continue
}
normalIndexSet.AddStr(normalKey)
sort.Slice(list, func(i, j int) bool {
return list[i].SeqInIndex < list[j].SeqInIndex
})
reply.NormalIndex[indexName] = list
}
return &reply, nil
}
func getTableFields(table *model.Table) (map[string]*Field, error) {
fieldM := make(map[string]*Field)
for _, each := range table.Columns {
isDefaultNull := each.ColumnDefault == nil && each.IsNullAble == "YES"
dt, err := converter.ConvertDataType(each.DataType, isDefaultNull)
if err != nil {
return nil, err
}
columnSeqInIndex := 0
if each.Index != nil {
columnSeqInIndex = each.Index.SeqInIndex
}
field := &Field{
Name: stringx.From(each.Name),
DataBaseType: each.DataType,
DataType: dt,
Comment: each.Comment,
SeqInIndex: columnSeqInIndex,
OrdinalPosition: each.OrdinalPosition,
}
fieldM[each.Name] = field
}
return fieldM, nil
}