#!/usr/bin/env python3
# -*- encoding: utf-8 -*-

#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
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#  regarding copyright ownership.  The ASF licenses this file
#  to you under the Apache License, Version 2.0 (the
#  "License"); you may not use this file except in compliance
#  with the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
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#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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'''runner.py: module for creating Runner'''

from heronpy.api.topology import TopologyBuilder
from heronpy.streamlet.builder import Builder
from heronpy.streamlet.config import Config

class Runner(object):
  """Runner is used to run a topology that is built by the builder.
     It exports a sole function called run that takes care of constructing the topology
  """
  def __init__(self):
    """Nothing really"""
    pass

  # pylint: disable=protected-access, no-self-use
  def run(self, name, config, builder):
    """Builds the topology and submits it"""
    if not isinstance(name, str):
      raise RuntimeError("Name has to be a string type")
    if not isinstance(config, Config):
      raise RuntimeError("config has to be a Config type")
    if not isinstance(builder, Builder):
      raise RuntimeError("builder has to be a Builder type")
    bldr = TopologyBuilder(name=name)
    builder.build(bldr)
    bldr.set_config(config._api_config)
    bldr.build_and_submit()