51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package storage
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import (
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"database/sql"
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"fmt"
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"log"
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"strconv"
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)
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const schemaVersion = 1
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func Migrate(db *sql.DB) {
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var currentVersion int
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db.QueryRow(`SELECT version FROM schema_version`).Scan(¤tVersion)
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fmt.Println("Current schema version:", currentVersion)
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fmt.Println("Latest schema version:", schemaVersion)
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for version := currentVersion + 1; version <= schemaVersion; version++ {
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fmt.Println("Migrating to version:", version)
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tx, err := db.Begin()
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if err != nil {
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log.Fatal("[Migrate] ", err)
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}
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rawSQL := SqlMap["schema_version_"+strconv.Itoa(version)]
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if rawSQL == "" {
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log.Fatalf("[Migrate] missing migration %d", version)
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}
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_, err = tx.Exec(string(rawSQL))
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if err != nil {
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tx.Rollback()
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log.Fatal("[Migrate] ", err)
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}
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if _, err := tx.Exec(`delete from schema_version`); err != nil {
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tx.Rollback()
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log.Fatal("[Migrate] ", err)
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}
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if _, err := tx.Exec(`INSERT INTO schema_version (version) VALUES ($1)`, version); err != nil {
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tx.Rollback()
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log.Fatal("[Migrate] ", err)
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}
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if err := tx.Commit(); err != nil {
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log.Fatal("[Migrate] ", err)
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}
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}
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}
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