#!/usr/bin/python

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# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# 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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import logging
import json
import os
from dlab.actions_lib import *
import sys


def start_data_engine(cluster_name):
    print("Start Data Engine")
    try:
        start_ec2(os.environ['conf_tag_resource_id'], cluster_name)
    except:
        sys.exit(1)


if __name__ == "__main__":
    local_log_filename = "{}_{}_{}.log".format(os.environ['conf_resource'],
                                               os.environ['edge_user_name'],
                                               os.environ['request_id'])
    local_log_filepath = "/logs/" + \
                         os.environ['conf_resource'] + "/" + local_log_filename
    logging.basicConfig(format='%(levelname)-8s [%(asctime)s]  %(message)s',
                        level=logging.DEBUG,
                        filename=local_log_filepath)

    # generating variables dictionary
    create_aws_config_files()
    print('Generating infrastructure names and tags')
    data_engine_config = dict()
    
    try:
        data_engine_config['exploratory_name'] = os.environ['exploratory_name']
    except:
        data_engine_config['exploratory_name'] = ''
    try:
        data_engine_config['computational_name'] = os.environ['computational_name']
    except:
        data_engine_config['computational_name'] = ''
    data_engine_config['service_base_name'] = os.environ['conf_service_base_name']
    data_engine_config['user_name'] = os.environ['edge_user_name']
    data_engine_config['cluster_name'] = \
        data_engine_config['service_base_name'] + '-' + \
        data_engine_config['user_name'] + '-de-' + \
        data_engine_config['exploratory_name'] + '-' + \
        data_engine_config['computational_name']

    logging.info('[START DATA ENGINE CLUSTER]')
    print('[START DATA ENGINE CLUSTER]')
    try:
        start_data_engine("{}:{}".format(os.environ['conf_service_base_name'],
                                         data_engine_config['cluster_name']))
    except Exception as err:
        print('Error: {0}'.format(err))
        append_result("Failed to start Data Engine.", str(err))
        sys.exit(1)

    try:
        with open("/root/result.json", 'w') as result:
            res = {"service_base_name": data_engine_config['service_base_name'],
                   "Action": "Start Data Engine"}
            print(json.dumps(res))
            result.write(json.dumps(res))
    except:
        print("Failed writing results.")
        sys.exit(0)