44 lines
2.0 KiB
Go
44 lines
2.0 KiB
Go
package dbmigration
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import (
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"context"
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"git.pcux.cn/xuans/Smail/config"
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)
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// 仅迁移 Smail 版本化业务表；不能静默忽略自定义对象。
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func validatePortableObjects(ctx context.Context, database portableQuery, kind config.DatabaseType) error {
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queries := []string{"SELECT COUNT(*) FROM sqlite_master WHERE type IN ('view','trigger')"}
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switch kind {
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case config.DatabaseTypeMySQL:
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queries = []string{
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"SELECT COUNT(*) FROM information_schema.tables WHERE table_schema=DATABASE() AND (table_type <> 'BASE TABLE' OR engine <> 'InnoDB')",
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"SELECT COUNT(*) FROM information_schema.triggers WHERE trigger_schema=DATABASE()",
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"SELECT COUNT(*) FROM information_schema.events WHERE event_schema=DATABASE()",
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"SELECT COUNT(*) FROM information_schema.routines WHERE routine_schema=DATABASE()",
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"SELECT COUNT(*) FROM information_schema.table_constraints WHERE constraint_schema=DATABASE() AND constraint_type='FOREIGN KEY'",
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}
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case config.DatabaseTypePostgreSQL:
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queries = []string{
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"SELECT COUNT(*) FROM pg_namespace WHERE nspname NOT IN ('public','information_schema') AND nspname NOT LIKE 'pg_%'",
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"SELECT COUNT(*) FROM pg_class c JOIN pg_namespace n ON n.oid=c.relnamespace WHERE n.nspname='public' AND c.relkind NOT IN ('r','i','S')",
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"SELECT COUNT(*) FROM pg_trigger t JOIN pg_class c ON c.oid=t.tgrelid JOIN pg_namespace n ON n.oid=c.relnamespace WHERE n.nspname='public' AND NOT t.tgisinternal",
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"SELECT COUNT(*) FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE n.nspname='public'",
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"SELECT COUNT(*) FROM pg_constraint c JOIN pg_namespace n ON n.oid=c.connamespace WHERE n.nspname='public' AND c.contype IN ('f','c','x')",
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}
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}
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for _, query := range queries {
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rows, err := database.QueryContext(ctx, query)
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if err != nil {
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return ErrSQLUnsupportedObject
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}
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var count int
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valid := rows.Next() && rows.Scan(&count) == nil && count == 0 && rows.Err() == nil
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_ = rows.Close()
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if !valid {
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return ErrSQLUnsupportedObject
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}
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}
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return nil
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}
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