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transmogrify.py

import json
import time
from datetime import datetime, timezone


# For the raw events given (a List of Dictionaries) returns normalized log events as a List of
# Dictionaries having the following keys: 'server', 'date', 'severity', 'process', 'message'.
def transmogrify(raw_events: [dict]) -> [dict]:

    # Write your solution here and in any helper functions you wish to create.
    # Do not change this function signature or this could break tests.
    HUNDRED_YEARS = 100 * 365 * 24 * 3600
    json_data_list = []
    for n in raw_events:
        try:
            if n['date'] > time.time() + HUNDRED_YEARS:
                mtime = datetime.utcfromtimestamp(n['date'] / 1000)
            else:
                mtime = datetime.utcfromtimestamp(n['date'])

            current_date = mtime.isoformat() + '.000000'
        except TypeError as err:
            current_date = n['date']

        process_value = n['source'] if "source" in n else n['process']

        if "events" in n:
            for evt in n['events']:
                error_level = return_error_level(evt['indicator-level'])
                if evt['indicator-type'] != "message":
                    message = evt['indicator-type'] + " " + evt['indicator-value']
                else:
                    message = evt['indicator-value']

                json_data_list.append(parse_json(n['server'], current_date, error_level, process_value, message))
        else:
            json_data_list.append(parse_json(n['server'], current_date, n['severity'], process_value, n['message']))

    return json_data_list


def return_error_level(indicator):
    if indicator == 7:
        error_level = "WARN"
    elif indicator == 3:
        error_level = "INFO"
    else:
        error_level = "TRACE"

    return error_level


def parse_json(server, current_date, error_level, process_value, message):
    json_parser_value = {
        "server": server,
        "date": current_date,
        "severity": error_level,
        "process": process_value,
        "message": message
    }
    return json_parser_value