gitea/vendor/github.com/go-testfixtures/testfixtures/v3/mysql.go
6543 792b4dba2c
[Vendor] Update directly used dependencys (#15593)
* update github.com/blevesearch/bleve v2.0.2 -> v2.0.3

* github.com/denisenkom/go-mssqldb v0.9.0 -> v0.10.0

* github.com/editorconfig/editorconfig-core-go v2.4.1 -> v2.4.2

* github.com/go-chi/cors v1.1.1 -> v1.2.0

* github.com/go-git/go-billy v5.0.0 -> v5.1.0

* github.com/go-git/go-git v5.2.0 -> v5.3.0

* github.com/go-ldap/ldap v3.2.4 -> v3.3.0

* github.com/go-redis/redis v8.6.0 -> v8.8.2

* github.com/go-sql-driver/mysql v1.5.0 -> v1.6.0

* github.com/go-swagger/go-swagger v0.26.1 -> v0.27.0

* github.com/lib/pq v1.9.0 -> v1.10.1

* github.com/mattn/go-sqlite3 v1.14.6 -> v1.14.7

* github.com/go-testfixtures/testfixtures v3.5.0 -> v3.6.0

* github.com/issue9/identicon v1.0.1 -> v1.2.0

* github.com/klauspost/compress v1.11.8 -> v1.12.1

* github.com/mgechev/revive v1.0.3 -> v1.0.6

* github.com/microcosm-cc/bluemonday v1.0.7 -> v1.0.8

* github.com/niklasfasching/go-org v1.4.0 -> v1.5.0

* github.com/olivere/elastic v7.0.22 -> v7.0.24

* github.com/pelletier/go-toml v1.8.1 -> v1.9.0

* github.com/prometheus/client_golang v1.9.0 -> v1.10.0

* github.com/xanzy/go-gitlab v0.44.0 -> v0.48.0

* github.com/yuin/goldmark v1.3.3 -> v1.3.5

* github.com/6543/go-version v1.2.4 -> v1.3.1

* do github.com/lib/pq v1.10.0 -> v1.10.1 again ...
2021-04-22 20:08:53 -04:00

160 lines
3.1 KiB
Go
Vendored

package testfixtures
import (
"database/sql"
"fmt"
)
type mySQL struct {
baseHelper
skipResetSequences bool
resetSequencesTo int64
tables []string
tablesChecksum map[string]int64
}
func (h *mySQL) init(db *sql.DB) error {
var err error
h.tables, err = h.tableNames(db)
if err != nil {
return err
}
return nil
}
func (*mySQL) paramType() int {
return paramTypeQuestion
}
func (*mySQL) quoteKeyword(str string) string {
return fmt.Sprintf("`%s`", str)
}
func (*mySQL) databaseName(q queryable) (string, error) {
var dbName string
err := q.QueryRow("SELECT DATABASE()").Scan(&dbName)
return dbName, err
}
func (h *mySQL) tableNames(q queryable) ([]string, error) {
const query = `
SELECT table_name
FROM information_schema.tables
WHERE table_schema = ?
AND table_type = 'BASE TABLE';
`
dbName, err := h.databaseName(q)
if err != nil {
return nil, err
}
rows, err := q.Query(query, dbName)
if err != nil {
return nil, err
}
defer rows.Close()
var tables []string
for rows.Next() {
var table string
if err = rows.Scan(&table); err != nil {
return nil, err
}
tables = append(tables, table)
}
if err = rows.Err(); err != nil {
return nil, err
}
return tables, nil
}
func (h *mySQL) disableReferentialIntegrity(db *sql.DB, loadFn loadFunction) (err error) {
if !h.skipResetSequences {
defer func() {
if err2 := h.resetSequences(db); err2 != nil && err == nil {
err = err2
}
}()
}
tx, err := db.Begin()
if err != nil {
return err
}
defer tx.Rollback()
if _, err = tx.Exec("SET FOREIGN_KEY_CHECKS = 0"); err != nil {
return err
}
err = loadFn(tx)
_, err2 := tx.Exec("SET FOREIGN_KEY_CHECKS = 1")
if err != nil {
return err
}
if err2 != nil {
return err2
}
return tx.Commit()
}
func (h *mySQL) resetSequences(db *sql.DB) error {
resetSequencesTo := h.resetSequencesTo
if resetSequencesTo == 0 {
resetSequencesTo = 10000
}
for _, t := range h.tables {
if _, err := db.Exec(fmt.Sprintf("ALTER TABLE %s AUTO_INCREMENT = %d", h.quoteKeyword(t), resetSequencesTo)); err != nil {
return err
}
}
return nil
}
func (h *mySQL) isTableModified(q queryable, tableName string) (bool, error) {
checksum, err := h.getChecksum(q, tableName)
if err != nil {
return true, err
}
oldChecksum := h.tablesChecksum[tableName]
return oldChecksum == 0 || checksum != oldChecksum, nil
}
func (h *mySQL) afterLoad(q queryable) error {
if h.tablesChecksum != nil {
return nil
}
h.tablesChecksum = make(map[string]int64, len(h.tables))
for _, t := range h.tables {
checksum, err := h.getChecksum(q, t)
if err != nil {
return err
}
h.tablesChecksum[t] = checksum
}
return nil
}
func (h *mySQL) getChecksum(q queryable, tableName string) (int64, error) {
query := fmt.Sprintf("CHECKSUM TABLE %s", h.quoteKeyword(tableName))
var (
table string
checksum sql.NullInt64
)
if err := q.QueryRow(query).Scan(&table, &checksum); err != nil {
return 0, err
}
if !checksum.Valid {
return 0, fmt.Errorf("testfixtures: table %s does not exist", tableName)
}
return checksum.Int64, nil
}