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migrations.go
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/
migrations.go
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package db
import (
"embed"
"fmt"
"net/http"
"github.com/golang-migrate/migrate/v4"
_ "github.com/golang-migrate/migrate/v4/database"
_ "github.com/golang-migrate/migrate/v4/database/mysql"
_ "github.com/golang-migrate/migrate/v4/database/postgres"
_ "github.com/golang-migrate/migrate/v4/source/file"
"github.com/golang-migrate/migrate/v4/source/httpfs"
)
func RunMigrations(config Config, embeddedMigrations embed.FS, resourcePath string) error {
m, err := getMigrationInstance(config, embeddedMigrations, resourcePath)
if err != nil {
return err
}
err = m.Up()
if err == migrate.ErrNoChange || err == nil {
return nil
}
return err
}
func RunRollback(config Config, embeddedMigrations embed.FS, resourcePath string) error {
m, err := getMigrationInstance(config, embeddedMigrations, resourcePath)
if err != nil {
return err
}
err = m.Steps(-1)
if err == migrate.ErrNoChange || err == nil {
return nil
}
return err
}
func getMigrationInstance(config Config, embeddedMigrations embed.FS, resourcePath string) (*migrate.Migrate, error) {
src, err := httpfs.New(http.FS(embeddedMigrations), resourcePath)
if err != nil {
return &migrate.Migrate{}, fmt.Errorf("db migrator: %v", err)
}
return migrate.NewWithSourceInstance("httpfs", src, config.URL)
}