-
Notifications
You must be signed in to change notification settings - Fork 0
/
writer.go
413 lines (326 loc) · 10 KB
/
writer.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
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
package writer
import (
"errors"
"fmt"
"strconv"
"strings"
"sync"
"time"
gravity_sdk_types_record "github.com/BrobridgeOrg/gravity-sdk/types/record"
"github.com/BrobridgeOrg/gravity-transmitter-oracle/pkg/database"
buffered_input "github.com/cfsghost/buffered-input"
"github.com/jmoiron/sqlx"
_ "github.com/mattn/go-oci8"
log "github.com/sirupsen/logrus"
"github.com/spf13/viper"
)
var (
UpdateTemplate = `UPDATE %s SET %s WHERE %s = :primary_val`
InsertTemplate = `INSERT INTO %s (%s) VALUES (%s)`
DeleteTemplate = `DELETE FROM %s WHERE %s = :primary_val`
)
var recordDefPool = sync.Pool{
New: func() interface{} {
return &gravity_sdk_types_record.RecordDef{}
},
}
type DatabaseInfo struct {
Host string `json:"host"`
Port int `json:"port"`
Username string `json:"username"`
Password string `json:"password"`
DbName string `json:"db_name"`
Param string `json:"param"`
}
type Writer struct {
dbInfo *DatabaseInfo
db *sqlx.DB
commands chan *DBCommand
completionHandler database.CompletionHandler
buffer *buffered_input.BufferedInput
}
func NewWriter() *Writer {
writer := &Writer{
dbInfo: &DatabaseInfo{},
commands: make(chan *DBCommand, 2048),
completionHandler: func(database.DBCommand) {},
}
// Initializing buffered input
opts := buffered_input.NewOptions()
opts.ChunkSize = viper.GetInt("bufferInput.chunkSize")
opts.ChunkCount = 10000
opts.Timeout = viper.GetDuration("bufferInput.timeout") * time.Millisecond
opts.Handler = writer.chunkHandler
writer.buffer = buffered_input.NewBufferedInput(opts)
return writer
}
func (writer *Writer) Init() error {
// Initialize data
service_name := viper.GetString("database.serviceName")
sid := viper.GetString("database.sid")
if service_name != "" && sid != "" {
log.Error("Only one of serviceName or sid can be used")
return nil
}
dbname := ""
if service_name != "" {
dbname = service_name
}
if sid != "" {
dbname = sid
}
// Read configuration file
writer.dbInfo.Host = viper.GetString("database.host")
writer.dbInfo.Port = viper.GetInt("database.port")
writer.dbInfo.Username = viper.GetString("database.username")
writer.dbInfo.Password = viper.GetString("database.password")
writer.dbInfo.DbName = dbname
writer.dbInfo.Param = viper.GetString("database.param")
log.WithFields(log.Fields{
"host": writer.dbInfo.Host,
"port": writer.dbInfo.Port,
"username": writer.dbInfo.Username,
"dbname": writer.dbInfo.DbName,
"param": writer.dbInfo.Param,
}).Info("Connecting to database")
connStr := fmt.Sprintf(
"%s/%s@%s:%d/%s?%s",
writer.dbInfo.Username,
writer.dbInfo.Password,
writer.dbInfo.Host,
writer.dbInfo.Port,
writer.dbInfo.DbName,
writer.dbInfo.Param,
)
// Open database
db, err := sqlx.Open("oci8", connStr)
if err != nil {
log.Error(err)
return err
}
db.SetMaxOpenConns(10)
db.SetMaxIdleConns(10)
writer.db = db
if err = writer.setTimeFormatOnSession(); err != nil {
log.Error(err)
return err
}
go writer.run()
return nil
}
func (writer *Writer) chunkHandler(chunk []interface{}) {
dbCommands := make([]*DBCommand, 0, len(chunk))
for _, request := range chunk {
req := request.(*DBCommand)
dbCommands = append(dbCommands, req)
}
writer.processData(dbCommands)
}
func (writer *Writer) processData(dbCommands []*DBCommand) {
// Write to Database
for {
LOOP:
tx, err := writer.db.Beginx()
if err != nil {
log.Error(err)
tx.Rollback()
<-time.After(time.Second * 5)
log.WithFields(log.Fields{}).Warn("Retry to write record to database by batch ...")
continue
}
for _, cmd := range dbCommands {
_, err := tx.NamedExec(cmd.QueryStr, cmd.Args)
if err != nil {
log.WithFields(log.Fields{
"pkey_field": cmd.Record.PrimaryKey,
}).Error(err)
log.Error(cmd.QueryStr)
log.Error(cmd.Args)
tx.Rollback()
<-time.After(time.Second * 5)
goto LOOP
}
}
err = tx.Commit()
if err != nil {
log.Error(err)
tx.Rollback()
<-time.After(time.Second * 5)
log.WithFields(log.Fields{}).Warn("Retry to write record to database by batch ...")
continue
}
break
}
for _, cmd := range dbCommands {
writer.completionHandler(database.DBCommand(cmd))
recordDefPool.Put(cmd.RecordDef)
dbCommandPool.Put(cmd)
}
}
func (writer *Writer) setTimeFormatOnSession() error {
sqlStr := fmt.Sprintf(`ALTER SESSION SET NLS_DATE_FORMAT='yyyy-mm-dd hh24:mi:ss'`)
_, err := writer.db.Exec(sqlStr)
if err != nil {
return err
}
sqlStr = fmt.Sprintf(`ALTER SESSION SET NLS_TIMESTAMP_FORMAT='yyyy-mm-dd hh24:mi:ss.ff'`)
_, err = writer.db.Exec(sqlStr)
if err != nil {
return err
}
return nil
}
func (writer *Writer) run() {
for {
select {
case cmd := <-writer.commands:
// publish to buffered-input
writer.buffer.Push(cmd)
}
}
}
func (writer *Writer) SetCompletionHandler(fn database.CompletionHandler) {
writer.completionHandler = fn
}
func (writer *Writer) ProcessData(reference interface{}, record *gravity_sdk_types_record.Record, tables []string) error {
switch record.Method {
case gravity_sdk_types_record.Method_DELETE:
return writer.DeleteRecord(reference, record, tables)
case gravity_sdk_types_record.Method_UPDATE:
return writer.UpdateRecord(reference, record, tables)
case gravity_sdk_types_record.Method_INSERT:
return writer.InsertRecord(reference, record, tables)
}
return nil
}
func (writer *Writer) GetDefinition(record *gravity_sdk_types_record.Record) (*gravity_sdk_types_record.RecordDef, error) {
recordDef := recordDefPool.Get().(*gravity_sdk_types_record.RecordDef)
recordDef.HasPrimary = false
recordDef.Values = make(map[string]interface{})
recordDef.ColumnDefs = make([]*gravity_sdk_types_record.ColumnDef, 0, len(record.Fields))
// Scanning fields
for n, field := range record.Fields {
value := gravity_sdk_types_record.GetValue(field.Value)
// Primary key
// if field.IsPrimary == true {
if record.PrimaryKey == field.Name {
recordDef.Values["primary_val"] = value
recordDef.HasPrimary = true
recordDef.PrimaryColumn = field.Name
continue
}
// Generate binding name
bindingName := fmt.Sprintf("val_%s", strconv.Itoa(n))
recordDef.Values[bindingName] = value
// Store definition
recordDef.ColumnDefs = append(recordDef.ColumnDefs, &gravity_sdk_types_record.ColumnDef{
ColumnName: field.Name,
Value: field.Name,
BindingName: bindingName,
})
}
if len(record.PrimaryKey) > 0 && !recordDef.HasPrimary {
log.WithFields(log.Fields{
"column": record.PrimaryKey,
}).Error("Not found primary key")
return nil, errors.New("Not found primary key")
}
return recordDef, nil
}
func (writer *Writer) InsertRecord(reference interface{}, record *gravity_sdk_types_record.Record, tables []string) error {
recordDef, err := writer.GetDefinition(record)
if err != nil {
return err
}
return writer.insert(reference, record, record.Table, recordDef, tables)
}
func (writer *Writer) UpdateRecord(reference interface{}, record *gravity_sdk_types_record.Record, tables []string) error {
recordDef, err := writer.GetDefinition(record)
if err != nil {
return err
}
// Ignore if no primary key
if recordDef.HasPrimary == false {
return nil
}
_, err = writer.update(reference, record, record.Table, recordDef, tables)
if err != nil {
return err
}
return nil
}
func (writer *Writer) DeleteRecord(reference interface{}, record *gravity_sdk_types_record.Record, tables []string) error {
if record.PrimaryKey == "" {
// Do nothing
return nil
}
for _, field := range record.Fields {
// Primary key
// if field.IsPrimary == true {
if record.PrimaryKey == field.Name {
value := gravity_sdk_types_record.GetValue(field.Value)
sqlStr := fmt.Sprintf(DeleteTemplate, record.Table, field.Name)
dbCommand := dbCommandPool.Get().(*DBCommand)
dbCommand.Reference = reference
dbCommand.Record = record
dbCommand.QueryStr = sqlStr
dbCommand.Args = map[string]interface{}{
"primary_val": value,
}
dbCommand.Tables = tables
writer.commands <- dbCommand
break
}
}
return nil
}
func (writer *Writer) update(reference interface{}, record *gravity_sdk_types_record.Record, table string, recordDef *gravity_sdk_types_record.RecordDef, tables []string) (bool, error) {
// Preparing SQL string
updates := make([]string, 0, len(recordDef.ColumnDefs))
for _, def := range recordDef.ColumnDefs {
updates = append(updates, "\""+def.ColumnName+"\" = :"+def.BindingName)
}
updateStr := strings.Join(updates, ",")
sqlStr := fmt.Sprintf(UpdateTemplate, table, updateStr, recordDef.PrimaryColumn)
dbCommand := dbCommandPool.Get().(*DBCommand)
dbCommand.Reference = reference
dbCommand.Record = record
dbCommand.QueryStr = sqlStr
dbCommand.Args = recordDef.Values
dbCommand.RecordDef = recordDef
dbCommand.Tables = tables
writer.commands <- dbCommand
return false, nil
}
func (writer *Writer) insert(reference interface{}, record *gravity_sdk_types_record.Record, table string, recordDef *gravity_sdk_types_record.RecordDef, tables []string) error {
paramLength := len(recordDef.ColumnDefs)
if recordDef.HasPrimary {
paramLength++
}
// Allocation
colNames := make([]string, 0, paramLength)
valNames := make([]string, 0, paramLength)
if recordDef.HasPrimary {
colNames = append(colNames, `"`+recordDef.PrimaryColumn+`"`)
valNames = append(valNames, ":primary_val")
}
// Preparing columns and bindings
for _, def := range recordDef.ColumnDefs {
colNames = append(colNames, `"`+def.ColumnName+`"`)
valNames = append(valNames, `:`+def.BindingName)
}
// Preparing SQL string to insert
colsStr := strings.Join(colNames, ",")
valsStr := strings.Join(valNames, ",")
insertStr := fmt.Sprintf(InsertTemplate, table, colsStr, valsStr)
// database.db.NamedExec(insertStr, recordDef.Values)
dbCommand := dbCommandPool.Get().(*DBCommand)
dbCommand.Reference = reference
dbCommand.Record = record
dbCommand.QueryStr = insertStr
dbCommand.Args = recordDef.Values
dbCommand.RecordDef = recordDef
dbCommand.Tables = tables
writer.commands <- dbCommand
return nil
}