-
Notifications
You must be signed in to change notification settings - Fork 0
/
base_db.go
357 lines (317 loc) · 8.08 KB
/
base_db.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
package xdatabase
import (
"database/sql"
"encoding/hex"
"fmt"
"github.com/go-xe2/x/core/exception"
"github.com/go-xe2/x/xf/ef/xdbUtil"
"github.com/go-xe2/x/xf/ef/xq/xbinder"
. "github.com/go-xe2/x/xf/ef/xqi"
"strings"
"sync/atomic"
"time"
)
type TBaseDb struct {
this interface{}
conn DbConn
tx *sql.Tx
transLayout int32 // 事务启动层经数
lastInsertId int64
sqlLogs []string
lastSql string
union interface{}
transaction bool
master *sql.DB
slave *sql.DB
lastErr exception.IException
// 最后执行时间
lastDuration time.Duration
}
var _ BasicDB = (*TBaseDb)(nil)
func newBaseDb(inherited ...interface{}) *TBaseDb {
inst := &TBaseDb{
master: nil,
slave: nil,
transLayout: 0,
}
atomic.StoreInt32(&inst.transLayout, 0)
inst.this = inst
if len(inherited) > 0 {
if _, ok := inherited[0].(BasicDB); ok {
inst.this = inherited[0]
}
}
return inst
}
func (db *TBaseDb) This() interface{} {
return db.this
}
func (db *TBaseDb) Close() {
//if err := db.master.Close(); err != nil {
// xlog.Debug("close db error:", err)
//}
//if err := db.slave.Close(); err != nil {
// xlog.Debug("close db error:", err)
//}
}
func (db *TBaseDb) BeginTran() exception.IException {
var e error
if db.tx != nil {
// 事务已开始,不启动新的事务
atomic.AddInt32(&db.transLayout, 1)
return nil
}
if db.tx, e = db.master.Begin(); e != nil {
return exception.Wrap(e, "开启事务失败")
}
atomic.AddInt32(&db.transLayout, 1)
db.transaction = true
return nil
}
func (db *TBaseDb) Rollback() exception.IException {
if db.tx == nil {
return exception.NewText("未开始事务")
}
if layout := atomic.AddInt32(&db.transLayout, -1); layout > 0 {
return nil
}
if err := db.tx.Rollback(); err != nil {
return exception.Wrap(err, "回滚事务失败")
}
db.tx = nil
db.transaction = false
return nil
}
func (db *TBaseDb) Commit() exception.IException {
if db.tx == nil {
return exception.NewText("未开始事务")
}
if layout := atomic.AddInt32(&db.transLayout, -1); layout > 0 {
return nil
}
if err := db.tx.Commit(); err != nil {
return exception.Wrap(err, "提交事务失败")
}
db.tx = nil
db.transaction = false
return nil
}
func (db *TBaseDb) Transaction(closers ...func(session BasicDB) error) exception.IException {
logger := db.GetConn().GetLogger()
if err := db.BeginTran(); err != nil {
logger.Error(err.Error())
return err
}
for _, closer := range closers {
if err := closer(db); err != nil {
logger.Error(err.Error())
_ = db.Rollback()
return exception.Wrap(err, "执行事务失败")
}
}
return db.Commit()
}
func (db *TBaseDb) scan(rows *sql.Rows, binder DbQueryBinder) (result interface{}, err error) {
// 如果不需要绑定, 则需要初始化一下binder
columnTypes, _ := rows.ColumnTypes()
count := len(columnTypes)
values := make([]interface{}, count)
valueRef := make([]interface{}, count)
colInfos := make([]*TQueryColInfo, count)
colValues := make([]QueryColValue, count)
for i := 0; i < count; i++ {
col := columnTypes[i]
valueRef[i] = &values[i]
colInfos[i] = NewQueryColInfo(i, col.Name(), col.ScanType(), col.DatabaseTypeName())
colValues[i] = &TQueryColValue{
TQueryColInfo: colInfos[i],
ColValue: nil,
}
}
binder.StartBuild(colInfos...)
row := 1
for rows.Next() {
if err = rows.Scan(valueRef...); err != nil {
return
}
if !binder.StartBuildRow(row, count) {
continue
}
for i := 0; i < count; i++ {
var v = values[i]
col := colInfos[i]
if vs, ok := v.([]byte); ok {
if col.DbType == "BINARY" {
v = "0x" + hex.EncodeToString(vs)
} else {
v = string(vs)
}
}
colValues[i].ColValue = v
}
item, exit := binder.BuildRow(row, &colValues)
binder.EndBuildRow(item)
row++
if exit {
break
}
}
return binder.EndBuild(), nil
}
func (db *TBaseDb) Query(binder TBinderName, szSql string, args ...interface{}) (result interface{}, err exception.IException) {
oBinder := xbinder.GetQueryBinder(binder)
if oBinder == nil {
return nil, exception.Newf("数据绑定器%s不存在", binder)
}
return db.query(oBinder, szSql, args...)
}
func (db *TBaseDb) QueryBind(binder DbQueryBinder, szSql string, args ...interface{}) (result interface{}, err exception.IException) {
return db.query(binder, szSql, args...)
}
func (db *TBaseDb) query(binder DbQueryBinder, szSql string, args ...interface{}) (interface{}, exception.IException) {
if binder == nil {
binder = xbinder.NewQryMapBinder(nil)
}
// 清除错误
db.lastErr = nil
var result interface{} = nil
var err error
logger := db.GetConn().GetLogger()
result, err = xdbUtil.WithRunTimeContext(func() (interface{}, error) {
// 记录sqlLog
db.lastSql = fmt.Sprint(szSql, ", ", args)
var stmt *sql.Stmt
var rows *sql.Rows
// 如果是事务, 则从主库中读写
if db.tx == nil {
stmt, err = db.slave.Prepare(szSql)
} else {
stmt, err = db.master.Prepare(szSql)
}
if err != nil {
return nil, err
}
defer func() {
if err = stmt.Close(); err != nil {
panic(err)
}
}()
rows, err = stmt.Query(args...)
if err != nil {
return nil, err
}
// make sure we always close rows
defer func() {
if err = rows.Close(); err != nil {
panic(err)
}
}()
result, err = db.scan(rows, binder)
if err != nil {
return nil, err
}
return result, nil
}, func(duration time.Duration, err error) {
if err == nil {
// 记录最后执行时间
db.lastDuration = duration
if duration.Seconds() > logger.EnableSlowLog() {
logger.Slow(db.LastSql(), duration)
} else {
logger.Sql(db.LastSql(), duration)
}
}
})
if err != nil {
db.lastErr = exception.Wrap(err, "查询出错")
logger.Error("查询出错:" + db.lastErr.Error() + ", sql:" + db.lastSql)
return nil, db.lastErr
}
// 返回数据结果
return result, nil
}
func (db *TBaseDb) Execute(szSql string, args ...interface{}) (int64, exception.IException) {
// 清除错误
db.lastErr = nil
db.lastDuration = 0
var rowsAffected int64
// 记录开始时间
logger := db.GetConn().GetLogger()
_, err := xdbUtil.WithRunTimeContext(func() (interface{}, error) {
db.lastSql = fmt.Sprint(szSql, ", ", args)
var opType = strings.ToLower(szSql[0:6])
if opType == "select" {
return 0, exception.NewText("不能使用Execute执行查询语句")
}
var stmt *sql.Stmt
var err error
// 如果开启事务,在事务中执行脚本
if db.tx == nil {
stmt, err = db.master.Prepare(szSql)
} else {
stmt, err = db.tx.Prepare(szSql)
}
if err != nil {
return 0, err
}
//var err error
defer func() {
if err = stmt.Close(); err != nil {
panic(err)
}
}()
result, err := stmt.Exec(args...)
if err != nil {
return 0, err
}
if opType == "insert" {
// 获取最后插入的主键id,如果主键不是int类型将返回0
var lastInsertId int64 = 0
if lastInsertId, err = result.LastInsertId(); err == nil {
db.lastInsertId = lastInsertId
} else {
return 0, err
}
}
rowsAffected, err = result.RowsAffected()
if err != nil {
return 0, err
}
if opType == "insert" && db.lastInsertId == 0 {
// 获取最后插入的主键id,如果主键不是int类型则返回影响行数
db.lastInsertId = rowsAffected
}
return rowsAffected, nil
}, func(duration time.Duration, err error) {
if err == nil {
// 记录最后执行时间
db.lastDuration = duration
if duration.Seconds() > logger.EnableSlowLog() {
logger.Slow(db.LastSql(), duration)
} else {
logger.Sql(db.LastSql(), duration)
}
}
})
if err != nil {
logger.Error("执行语句出错:" + err.Error() + ", sql:" + db.lastSql)
db.lastErr = exception.Wrap(err, "执行语句出错")
return 0, db.lastErr
}
return rowsAffected, nil
}
func (db *TBaseDb) GetConn() DbConn {
return db.conn
}
func (db *TBaseDb) LastInsertId() int64 {
return db.lastInsertId
}
func (db *TBaseDb) LastSql() string {
return db.lastSql
}
func (db *TBaseDb) GetErr() exception.IException {
return db.lastErr
}
func (db *TBaseDb) LastSqlDuration() time.Duration {
return db.lastDuration
}