54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
package store
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import (
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"context"
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"database/sql"
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"embed"
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"fmt"
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"sort"
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"strings"
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)
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//go:embed migrations/*.sql
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var migrationsFS embed.FS
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func migrate(db *sql.DB) error {
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entries, err := migrationsFS.ReadDir("migrations")
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if err != nil {
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return fmt.Errorf("read migrations dir: %w", err)
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}
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names := make([]string, 0, len(entries))
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for _, e := range entries {
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if !e.IsDir() && strings.HasSuffix(e.Name(), ".sql") {
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names = append(names, e.Name())
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}
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}
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sort.Strings(names)
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if _, err := db.ExecContext(context.Background(), `CREATE TABLE IF NOT EXISTS schema_migrations (name TEXT PRIMARY KEY, applied_at DATETIME NOT NULL)`); err != nil {
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return fmt.Errorf("create schema_migrations: %w", err)
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}
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for _, name := range names {
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var existing string
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err := db.QueryRowContext(context.Background(), `SELECT name FROM schema_migrations WHERE name = ?`, name).Scan(&existing)
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if err == nil {
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continue
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}
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if err != sql.ErrNoRows {
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return fmt.Errorf("check migration %s: %w", name, err)
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}
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sqlBytes, err := migrationsFS.ReadFile("migrations/" + name)
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if err != nil {
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return fmt.Errorf("read migration %s: %w", name, err)
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}
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if _, err := db.ExecContext(context.Background(), string(sqlBytes)); err != nil {
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return fmt.Errorf("apply migration %s: %w", name, err)
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}
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if _, err := db.ExecContext(context.Background(), `INSERT INTO schema_migrations (name, applied_at) VALUES (?, datetime('now'))`, name); err != nil {
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return fmt.Errorf("record migration %s: %w", name, err)
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}
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}
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return nil
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}
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