CreateUserSaga

//We store all operations in a file
// then if transaction is failed we revert every operation
//transaction is failed if file lock was released 
PreCreateUserHook.run(uid, pass)
    tx = new Tx('create-user' + uid);
    tx.add(new CreateUser(uid, pass))
    
PostCreateUserHook.run(uid, pass)
    tx = Tx.find('create-user' + uid)
    tx.commit()
    
    
BackgroundJob 
  Tx.all().each((tx) => tx.fail || tx.rollback())
  
class Tx {
  commit = () => {
      connector.send('create-user', uid, pass)
      Filesystem.remove(this)
    })
  }
  
  rollback = () => {
    while (this.operations.length) {
      tx.operations.pop().rollback()
    }
  }
  
  add = (operation) => {
    Filesystem.save(operation)
  }
  
}

class CreateUser {
  rollback: () => {
    DeleteUser(uid)
    //What if nextclloud crash ater user was deleted but before next line?  
    //In this case we'll try to delete user again after server up(operation should be idempotent).
    Filesystem.remove(this)
  }
}

commit = () => { connector.send('create-user', uid, pass) Filesystem.remove(this) })
does this belong to CreateUser class?