import csv
import re
import os
import argparse
import json
import time
import datetime
import requests
import asyncio
import logging
import logging.handlers
#from memory_profiler import profile
#from pympler.tracker import SummaryTracker

def follow_file(fname, cnt):
    """
    Tail a given file and returns each line to the generator caller
    """
    cur_file = open(fname, "r")

cur_ino = os.fstat(cur_file.fileno()).st_ino

    while True:
        while True:
            line = cur_file.readline()
            cnt = cnt + 1

            if not line:
                break
            yield cnt, line

        try:
            if os.stat(fname).st_ino != cur_ino:
                new_file = open(fname, "r")
                cur_file.close()
                cur_file = new_file
                cur_ino = os.fstat(cur_file.fileno()).st_ino
                continue
        except IOError:
            logging.warning("{} IOError".format(fname))
            pass

time.sleep(WAIT_FILE_SEC)

def process_line(line, idx):
    """
    Process one line at time to create a REST payload message
    """

    ev_dict = {}
    line = line.replace('\"', '')
    pat = r"(\w+=.*?),"
    fields = re.findall(pat, line, flags=0)

    for field in fields:
        try:
            key, value = field.split('=',1)

            if (key in ev_dict):
                next
            else:
                ev_dict[key] = value
        except:
            next

    try:
        ev_host = ev_dict['entity'].split('-')[-1]
        ev_event = ev_dict['event']
        ev_severity = ev_dict['eventSeverity']
        ev_time = ev_dict['time']
        ev_time = ev_time.replace(']', '')

        ev_type = ev_dict['eventType']
        ev_description = ev_dict['description']
        ev_id = "{}-{}".format(line.split(' ')[0], idx)
        ev_entity = ev_dict['entity']
        ev_pub = ev_dict['publisher']
        ev_state = ev_dict['state']

    except:
        logging.warning(line)
        return None

    payload = {
        'app_key': APP_KEY,
        'status': ev_severity,
        'host': ev_host,
        'timestamp': ev_time,
        'check' : ev_event,
        'description': ev_description,
        'my_unique_attribute': ev_id,
        'entity' : ev_entity,
        'publisher' : ev_pub,
        'state' : ev_state,
        'supportcard' : ev_supportcard,
        'wiki' : ev_wiki
    }

return payload

#@profile
def send_payload(payload, idx):
    """
    Send a single data payload to via REST API
    """
    url = "https://bpcom/nom/dev/events"

#ret_msg = {}
st = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")

response = requests.post(url, headers=HEADERS, data=json.dumps(payload))

et = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")

logging.info("{} {} {} {} {}".format(idx, payload['my_unique_attribute'], response.status_code, st, et))

#return ret_msg

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description= "feeder")
    parser.add_argument("--test", "-t", action='store_true', help='test')
    parser.add_argument("--infile", "-i", type=str, help="manual input file")
    parser.add_argument("--start", "-s", type=int, help="start sending message at #")
    parser.add_argument("--feed", "-f", type=str, help='FEED: \n")
    args = parser.parse_args()

    if (args.infile is not None):
        amber_file = args.infile
        logfile = "amber_panda.log"
    else:
        amber_feed = args.feed
        if (amber_feed is None):
            amber_feed = 'sentinel'

amber_file = AMBERFILES[amber_feed]
logfile = LOGFILES[amber_feed]

    if (args.start is not None):
        start_msg_idx = args.start
    else:
        start_msg_idx = 0

    logging.basicConfig(filename=logfile, level=logging.INFO,
                        format='%(asctime)s %(levelname)-8s %(message)s',
                        datefmt ='%Y-%m-%d %H:%M:%S')

logging.info("Starts")

i = 0

loop = asyncio.get_event_loop()

for i, ev_line in follow_file(amber_file, i):
payload = process_line(ev_line, i)

if (payload is not None and i >= start_msg_idx):
future = loop.run_in_executor(None, send_payload, payload, i)

            logging.info("Parsing AMBER Message {}".format(i))
        else:
            if (payload is None):
                logging.warning("{} Invalid Payload".format(i))
            else:
                if (i % 100 == 0):
                    logging.info("Skip {}... Messages".format(i))

        if (args.test):
            if (i > TEST_MSG_CNT):
                break

del payload

time_end_str = datetime.datetime.now().strftime("%m/%d/%Y %H:%M:%S")
logging.info("End At " + time_end_str)

	Created by Brett Cui over 6 years ago

Python - follow_file