mirror of
https://github.com/1Panel-dev/1Panel.git
synced 2024-12-04 01:39:20 +08:00
303 lines
7.1 KiB
Go
303 lines
7.1 KiB
Go
package helper
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import (
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"bufio"
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"database/sql"
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"fmt"
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"io"
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"os"
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"strings"
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"time"
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"github.com/1Panel-dev/1Panel/backend/global"
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_ "github.com/go-sql-driver/mysql"
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)
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func init() {}
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type dumpOption struct {
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isData bool
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tables []string
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isAllTable bool
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isDropTable bool
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writer io.Writer
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}
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type DumpOption func(*dumpOption)
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func WithDropTable() DumpOption {
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return func(option *dumpOption) {
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option.isDropTable = true
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}
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}
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func WithData() DumpOption {
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return func(option *dumpOption) {
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option.isData = true
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}
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}
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func WithWriter(writer io.Writer) DumpOption {
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return func(option *dumpOption) {
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option.writer = writer
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}
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}
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func Dump(dns string, opts ...DumpOption) error {
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start := time.Now()
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global.LOG.Infof("dump start at %s\n", start.Format("2006-01-02 15:04:05"))
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defer func() {
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end := time.Now()
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global.LOG.Infof("dump end at %s, cost %s\n", end.Format("2006-01-02 15:04:05"), end.Sub(start))
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}()
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var err error
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var o dumpOption
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for _, opt := range opts {
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opt(&o)
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}
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if len(o.tables) == 0 {
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o.isAllTable = true
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}
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if o.writer == nil {
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o.writer = os.Stdout
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}
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buf := bufio.NewWriter(o.writer)
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defer buf.Flush()
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itemFile, lineNumber := "", 0
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itemFile += "-- ----------------------------\n"
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itemFile += "-- MySQL Database Dump\n"
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itemFile += "-- Start Time: " + start.Format("2006-01-02 15:04:05") + "\n"
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itemFile += "-- ----------------------------\n\n\n"
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db, err := sql.Open("mysql", dns)
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if err != nil {
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global.LOG.Errorf("open mysql db failed, err: %v", err)
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return err
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}
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defer db.Close()
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dbName, err := getDBNameFromDNS(dns)
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if err != nil {
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global.LOG.Errorf("get db name from dns failed, err: %v", err)
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return err
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}
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_, err = db.Exec(fmt.Sprintf("USE `%s`", dbName))
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if err != nil {
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global.LOG.Errorf("exec `use %s` failed, err: %v", dbName, err)
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return err
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}
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var tables []string
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if o.isAllTable {
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tmp, err := getAllTables(db)
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if err != nil {
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global.LOG.Errorf("get all tables failed, err: %v", err)
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return err
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}
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tables = tmp
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} else {
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tables = o.tables
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}
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for _, table := range tables {
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if o.isDropTable {
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itemFile += fmt.Sprintf("DROP TABLE IF EXISTS `%s`;\n", table)
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}
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itemFile += "-- ----------------------------\n"
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itemFile += fmt.Sprintf("-- Table structure for %s\n", table)
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itemFile += "-- ----------------------------\n"
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createTableSQL, err := getCreateTableSQL(db, table)
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if err != nil {
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global.LOG.Errorf("get create table sql failed, err: %v", err)
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return err
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}
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itemFile += createTableSQL
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itemFile += ";\n\n\n\n"
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if o.isData {
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itemFile += "-- ----------------------------\n"
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itemFile += fmt.Sprintf("-- Records of %s\n", table)
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itemFile += "-- ----------------------------\n"
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lineRows, err := db.Query(fmt.Sprintf("SELECT * FROM `%s`", table))
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if err != nil {
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global.LOG.Errorf("exec `select * from %s` failed, err: %v", table, err)
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return err
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}
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defer lineRows.Close()
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var columns []string
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columns, err = lineRows.Columns()
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if err != nil {
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global.LOG.Errorf("get columes failed, err: %v", err)
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return err
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}
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columnTypes, err := lineRows.ColumnTypes()
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if err != nil {
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global.LOG.Errorf("get colume types failed, err: %v", err)
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return err
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}
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for lineRows.Next() {
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row := make([]interface{}, len(columns))
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rowPointers := make([]interface{}, len(columns))
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for i := range columns {
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rowPointers[i] = &row[i]
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}
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if err = lineRows.Scan(rowPointers...); err != nil {
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global.LOG.Errorf("scan row data failed, err: %v", err)
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return err
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}
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ssql := loadDataSql(row, columnTypes, table)
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if len(ssql) != 0 {
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itemFile += ssql
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lineNumber++
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}
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if lineNumber > 500 {
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_, _ = buf.WriteString(itemFile)
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itemFile = ""
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lineNumber = 0
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}
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}
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itemFile += "\n\n"
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}
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}
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itemFile += "-- ----------------------------\n"
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itemFile += "-- Dumped by mysqldump\n"
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itemFile += "-- Cost Time: " + time.Since(start).String() + "\n"
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itemFile += "-- ----------------------------\n"
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_, _ = buf.WriteString(itemFile)
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_ = buf.Flush()
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return nil
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}
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func getCreateTableSQL(db *sql.DB, table string) (string, error) {
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var createTableSQL string
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err := db.QueryRow(fmt.Sprintf("SHOW CREATE TABLE `%s`", table)).Scan(&table, &createTableSQL)
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if err != nil {
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return "", err
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}
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createTableSQL = strings.Replace(createTableSQL, "CREATE TABLE", "CREATE TABLE IF NOT EXISTS", 1)
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return createTableSQL, nil
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}
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func getAllTables(db *sql.DB) ([]string, error) {
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var tables []string
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rows, err := db.Query("SHOW TABLES")
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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for rows.Next() {
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var table string
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err = rows.Scan(&table)
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if err != nil {
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return nil, err
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}
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tables = append(tables, table)
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}
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return tables, nil
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}
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func loadDataSql(row []interface{}, columnTypes []*sql.ColumnType, table string) string {
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ssql := "INSERT INTO `" + table + "` VALUES ("
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for i, col := range row {
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if col == nil {
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ssql += "NULL"
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} else {
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Type := columnTypes[i].DatabaseTypeName()
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Type = strings.Replace(Type, "UNSIGNED", "", -1)
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Type = strings.Replace(Type, " ", "", -1)
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switch Type {
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case "TINYINT", "SMALLINT", "MEDIUMINT", "INT", "INTEGER", "BIGINT":
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if bs, ok := col.([]byte); ok {
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ssql += string(bs)
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} else {
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ssql += fmt.Sprintf("%d", col)
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}
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case "FLOAT", "DOUBLE":
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if bs, ok := col.([]byte); ok {
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ssql += string(bs)
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} else {
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ssql += fmt.Sprintf("%f", col)
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}
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case "DECIMAL", "DEC":
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ssql += fmt.Sprintf("%s", col)
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case "DATE":
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t, ok := col.(time.Time)
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if !ok {
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global.LOG.Errorf("the DATE type conversion failed, err value: %v", col)
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return ""
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}
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ssql += fmt.Sprintf("'%s'", t.Format("2006-01-02"))
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case "DATETIME":
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t, ok := col.(time.Time)
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if !ok {
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global.LOG.Errorf("the DATETIME type conversion failed, err value: %v", col)
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return ""
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}
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ssql += fmt.Sprintf("'%s'", t.Format("2006-01-02 15:04:05"))
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case "TIMESTAMP":
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t, ok := col.(time.Time)
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if !ok {
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global.LOG.Errorf("the TIMESTAMP type conversion failed, err value: %v", col)
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return ""
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}
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ssql += fmt.Sprintf("'%s'", t.Format("2006-01-02 15:04:05"))
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case "TIME":
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t, ok := col.([]byte)
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if !ok {
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global.LOG.Errorf("the TIME type conversion failed, err value: %v", col)
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return ""
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}
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ssql += fmt.Sprintf("'%s'", string(t))
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case "YEAR":
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t, ok := col.([]byte)
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if !ok {
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global.LOG.Errorf("the YEAR type conversion failed, err value: %v", col)
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return ""
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}
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ssql += string(t)
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case "CHAR", "VARCHAR", "TINYTEXT", "TEXT", "MEDIUMTEXT", "LONGTEXT":
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ssql += fmt.Sprintf("'%s'", strings.Replace(fmt.Sprintf("%s", col), "'", "''", -1))
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case "BIT", "BINARY", "VARBINARY", "TINYBLOB", "BLOB", "MEDIUMBLOB", "LONGBLOB":
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ssql += fmt.Sprintf("0x%X", col)
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case "ENUM", "SET":
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ssql += fmt.Sprintf("'%s'", col)
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case "BOOL", "BOOLEAN":
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if col.(bool) {
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ssql += "true"
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} else {
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ssql += "false"
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}
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case "JSON":
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ssql += fmt.Sprintf("'%s'", col)
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default:
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global.LOG.Errorf("unsupported colume type: %s", Type)
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return ""
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}
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}
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if i < len(row)-1 {
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ssql += ","
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}
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}
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ssql += ");\n"
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return ssql
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}
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