79 lines
1.7 KiB
Go
79 lines
1.7 KiB
Go
package main
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"os"
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"os/signal"
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"github.com/golang-migrate/migrate/v4"
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// Use it to append postgres sql and file drivers.
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_ "github.com/golang-migrate/migrate/v4/database/postgres"
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_ "github.com/golang-migrate/migrate/v4/source/file"
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)
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func main() {
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ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
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defer cancel()
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err := app(ctx)
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if err != nil {
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log.Fatalf("unable to run app: %v", err)
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}
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}
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func app(_ context.Context) (err error) {
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const filepath = "file:///app/db/migrations"
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pgdsn := os.Getenv("DEVSIM_PG_DSN")
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if pgdsn == "" {
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return nil
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}
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filedsn := os.Getenv("DEVSIM_PG_MIGRATION")
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if filedsn == "" {
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filedsn = filepath
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}
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log.Println("going to apply migrations from path: " + filedsn)
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migrations, err := migrate.New(
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filedsn,
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pgdsn,
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)
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if err != nil {
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return fmt.Errorf("making migrator: %w", err)
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}
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defer func() {
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sourceErr, dbErr := migrations.Close()
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err = errors.Join(err, sourceErr, dbErr)
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}()
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version, dirty, err := migrations.Version()
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if errors.Is(err, migrate.ErrNilVersion) {
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log.Println("no migrations applied to database")
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} else if err != nil {
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return fmt.Errorf("getting version: %w", err)
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} else {
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log.Printf("current migration version: %d (dirty: %t)", version, dirty)
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}
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err = migrations.Up()
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if err != nil {
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return fmt.Errorf("applying migrations: %w", err)
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}
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version, dirty, err = migrations.Version()
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if errors.Is(err, migrate.ErrNilVersion) {
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log.Println("no migrations applied to database")
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} else if err != nil {
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return fmt.Errorf("getting version: %w", err)
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} else {
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log.Printf("updated to migration version: %d (dirty: %t)", version, dirty)
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}
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return nil
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}
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