catbase/util/migrate/counter.go

package main

import (
	"database/sql"
	"github.com/jmoiron/sqlx"
	bh "github.com/timshannon/bolthold"
	counter2 "github.com/velour/catbase/plugins/counter"
	"log"
)

type ItemSQL struct {
	counter2.Item

	UserID sql.NullString
}

func migrateCounter(db *sqlx.DB, store *bh.Store) error {
	all := []ItemSQL{}
	log.Printf("Migrating %T", all)
	if err := db.Select(&all, `select * from counter`); err != nil {
		return err
	}
	for _, i := range all {
		it := i.Item
		if i.UserID.Valid {
			it.UserID = i.UserID.String
		}
		if err := store.Insert(bh.NextSequence(), &it); err != nil {
			return err
		}
	}

	aliases := []counter2.Alias{}
	log.Printf("Migrating %T", aliases)
	if err := db.Select(&aliases, `select * from counter_alias`); err != nil {
		return err
	}
	for _, i := range all {
		if err := store.Insert(bh.NextSequence(), &i); err != nil {
			return err
		}
	}
	return nil
}