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wakapi/migrations/migrations.go
2021-02-21 12:02:19 +01:00

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package migrations
import (
"github.com/emvi/logbuch"
"github.com/muety/wakapi/config"
"gorm.io/gorm"
"sort"
"strings"
)
type migrationFunc struct {
f func(db *gorm.DB, cfg *config.Config) error
name string
}
type migrationFuncs []migrationFunc
var (
preMigrations migrationFuncs
postMigrations migrationFuncs
)
func registerPreMigration(f migrationFunc) {
preMigrations = append(preMigrations, f)
}
func registerPostMigration(f migrationFunc) {
postMigrations = append(postMigrations, f)
}
func Run(db *gorm.DB, cfg *config.Config) {
RunPreMigrations(db, cfg)
RunSchemaMigrations(db, cfg)
RunPostMigrations(db, cfg)
}
func RunSchemaMigrations(db *gorm.DB, cfg *config.Config) {
if err := cfg.GetMigrationFunc(cfg.Db.Dialect)(db); err != nil {
logbuch.Fatal(err.Error())
}
}
func RunPreMigrations(db *gorm.DB, cfg *config.Config) {
sort.Sort(preMigrations)
for _, m := range preMigrations {
logbuch.Info("potentially running migration '%s'", m.name)
if err := m.f(db, cfg); err != nil {
logbuch.Fatal("migration '%s' failed %v", m.name, err)
}
}
}
func RunPostMigrations(db *gorm.DB, cfg *config.Config) {
sort.Sort(postMigrations)
for _, m := range postMigrations {
logbuch.Info("potentially running migration '%s'", m.name)
if err := m.f(db, cfg); err != nil {
logbuch.Fatal("migration '%s' failed %v", m.name, err)
}
}
}
func (m migrationFuncs) Len() int {
return len(m)
}
func (m migrationFuncs) Less(i, j int) bool {
return strings.Compare(m[i].name, m[j].name) < 0
}
func (m migrationFuncs) Swap(i, j int) {
m[i], m[j] = m[j], m[i]
}