Bolt error handling

0_readme.md

Bolt Error Handling

It's better to simply return the errors that occur from Tx.CreateBucket() and Bucket.Put() because they will rollback the transaction and the error will be returned from DB.Update(). Then you can just check the error from DB.Update().

The DB.Update() can also fail (e.g. the disk write may fail) so you should always check the return error from it.

1_old.go

this.DB.Update(func(tx *bolt.Tx) error {
	sesionBucket, err := tx.CreateBucket([]byte(bucket))
	if err != nil {
		// TODO: Handle instead of panic
		panic(err)
	}
	sesionBucket.Put([]byte(keyId), dataBytes)
	return nil
})

2_new.go

err := this.DB.Update(func(tx *bolt.Tx) error {
	sesionBucket, err := tx.CreateBucket([]byte(bucket))
	if err != nil {
		return err
	}
	return sesionBucket.Put([]byte(keyId), dataBytes)
})
if err != nil {
	// TODO: Handle instead of panic
	panic(err)
}