xuans
c4051c9166
保留存储过程与函数导出、权限检查、编码处理、共享存储对象逻辑及正式测试，同步两份任务进度文档。 已知阻塞：已有MySQL 5.7实库记录中，两种恢复入口均存在Latin-1例程注释乱码；已有8.0编码与权限专项通过，但不能代替最终双版本全量复测。本次仅重新运行例程单元测试及相关包静态检查，均通过。 这是未完成整改的保存检查点，不是发布版本，不表示P0-05完成或生产验收通过。未纳入运行数据、构建产物、原始实库日志或凭据。
62 lines
2.2 KiB
Go
62 lines
2.2 KiB
Go
package cli
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import (
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"context"
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"database/sql"
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"fmt"
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"io"
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)
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func dumpMySQLTriggers(ctx context.Context, tx *sql.Tx, output io.Writer) error {
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// 名称排序不能代表执行顺序；同一表、时机和事件按服务器的 ACTION_ORDER 导出。
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rows, err := tx.QueryContext(ctx, `SELECT TRIGGER_NAME FROM information_schema.TRIGGERS
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WHERE TRIGGER_SCHEMA = DATABASE()
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ORDER BY EVENT_OBJECT_TABLE, ACTION_TIMING, EVENT_MANIPULATION, ACTION_ORDER`)
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if err != nil {
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return fmt.Errorf("读取 MySQL 触发器列表失败：%w", err)
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}
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var names []string
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for rows.Next() {
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var name string
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if err := rows.Scan(&name); err != nil {
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_ = rows.Close()
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return fmt.Errorf("读取 MySQL 触发器名称失败：%w", err)
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}
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names = append(names, name)
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}
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if err := rows.Err(); err != nil {
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_ = rows.Close()
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return fmt.Errorf("遍历 MySQL 触发器失败：%w", err)
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}
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if err := rows.Close(); err != nil {
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return err
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}
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if len(names) == 0 {
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return nil
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}
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var databaseCollation string
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if err := tx.QueryRowContext(ctx, "SELECT @@collation_database").Scan(&databaseCollation); err != nil {
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return fmt.Errorf("读取 MySQL 数据库排序规则失败：%w", err)
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}
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if _, err := fmt.Fprintln(output, `SET @scert_trigger_sql_mode = @@SESSION.sql_mode;
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SET @scert_trigger_charset = @@SESSION.character_set_client;
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SET @scert_trigger_collation = @@SESSION.collation_connection;`); err != nil {
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return err
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}
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for _, name := range names {
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definition, err := readMySQLTrigger(ctx, tx, name)
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if err != nil {
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return err
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}
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if err := writeMySQLStoredDefinition(ctx, tx, output, definition, "SQL Original Statement", ""); err != nil {
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return fmt.Errorf("写入 MySQL 触发器失败（%s）：%w", name, err)
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}
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}
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_, err = fmt.Fprintf(output, "ALTER DATABASE COLLATE %s;\nSET SESSION sql_mode = @scert_trigger_sql_mode;\nSET SESSION character_set_client = @scert_trigger_charset;\nSET SESSION collation_connection = @scert_trigger_collation;\n\n", quoteMySQLIdentifier(databaseCollation))
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return err
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}
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func readMySQLTrigger(ctx context.Context, tx *sql.Tx, name string) (map[string]string, error) {
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return readMySQLStoredDefinition(ctx, tx, "TRIGGER", name, "SQL Original Statement")
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}
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