161 lines
4.7 KiB
Python
161 lines
4.7 KiB
Python
#!/usr/bin/env python3
|
|
import configparser
|
|
import argparse
|
|
|
|
import csv
|
|
import time
|
|
import logging
|
|
import sys
|
|
import json
|
|
import os
|
|
|
|
import boto3
|
|
|
|
logging.basicConfig(
|
|
level=logging.INFO,
|
|
format='[%(asctime)s] {%(filename)s:%(lineno)d} %(levelname)s - %(message)s',
|
|
handlers=[logging.StreamHandler(sys.stdout)]
|
|
)
|
|
logger = logging.getLogger(__name__)
|
|
|
|
DEFAULT_DATA_FILE = 'crypto_trades_20201001.csv'
|
|
|
|
|
|
class KinesisProducer:
|
|
"""
|
|
Kinesis Producer
|
|
"""
|
|
|
|
def __init__(self, speed_per_sec):
|
|
|
|
self.client = boto3.client('kinesis')
|
|
self.max_retry_attempt = 5
|
|
|
|
def produce(self, events, data_stream):
|
|
"""
|
|
A simple wrapper for put record
|
|
:param event:
|
|
:param key:
|
|
:param data_stream:
|
|
:return:
|
|
"""
|
|
|
|
# adding a new line at the end to produce JSON lines
|
|
# (otherwise we would need to pre-process those records in Firehose
|
|
# invoking a Lambda to add those new lines).Every message is a dumped json with \n
|
|
|
|
#tran_id = event["trans_id"]
|
|
# payload = (json.dumps(event) + '\n').encode('utf-8')
|
|
|
|
attempt = 1
|
|
logger.info(events)
|
|
while attempt < self.max_retry_attempt:
|
|
try:
|
|
response = self.client.put_records(Records=events, StreamName=data_stream)
|
|
logger.info('Succesfully sended')
|
|
|
|
return response
|
|
|
|
except Exception as e:
|
|
logger.warning('Exception has occurred {}, retrying...'.format(e))
|
|
attempt += 1
|
|
time.sleep(attempt)
|
|
|
|
logger.error('Max attempt has been reached, rethrowing the last err')
|
|
raise
|
|
|
|
|
|
def prepare_event(event):
|
|
"""
|
|
Events from CSV have no dtypes, lets convert it to some more real values (int / decimals etc)
|
|
:param event:
|
|
:return:
|
|
"""
|
|
msg_key = event["symbol"]
|
|
|
|
msg_formatted = {
|
|
"transaction_ts": int(event["transaction_ts"]),
|
|
"symbol": event["symbol"],
|
|
"price": float(event["price"]),
|
|
"amount": float(event["amount"]),
|
|
"dollar_amount": float(event["dollar_amount"]),
|
|
"type": event["type"],
|
|
"trans_id": int(event["trans_id"]),
|
|
}
|
|
|
|
return msg_formatted, msg_key
|
|
|
|
|
|
def produce_data(kinesis_data_stream, messages_per_sec, input_file, single_run):
|
|
"""
|
|
Main method for producing
|
|
:param kinesis_data_stream: param from cmdline name of KDS
|
|
:param messages_per_sec: param from cmdline max speed per sec 1/mps
|
|
:return:
|
|
"""
|
|
kp = KinesisProducer(speed_per_sec=messages_per_sec)
|
|
|
|
with open(input_file) as csv_file:
|
|
|
|
events = []
|
|
|
|
reader = csv.DictReader(csv_file, delimiter=',')
|
|
all_rows = list(reader)
|
|
|
|
current_time = int(all_rows[0]["transaction_ts"])
|
|
|
|
replay_cnt = 1
|
|
events_cnt = 0
|
|
|
|
while True:
|
|
logger.info("start replaying for the {} time".format(replay_cnt))
|
|
for row in all_rows:
|
|
|
|
new_event_time = int(row["transaction_ts"])
|
|
time_delta = new_event_time - current_time
|
|
current_time = new_event_time
|
|
|
|
if time_delta > 0 and messages_per_sec > 0:
|
|
time.sleep(time_delta / messages_per_sec)
|
|
|
|
event, key = prepare_event(row)
|
|
# event_prepared = str(event)
|
|
data_for_event = {'Data':str(event), 'PartitionKey':key}
|
|
events.append(data_for_event)
|
|
events_cnt+=1
|
|
print(events_cnt)
|
|
if events_cnt == 10:
|
|
kp.produce(events, kinesis_data_stream)
|
|
events = []
|
|
events_cnt=0
|
|
time.sleep(1)
|
|
if single_run:
|
|
break
|
|
replay_cnt += 1
|
|
|
|
|
|
if __name__ == "__main__":
|
|
logger.info('Starting Simple Kinesis Producer (replaying stock data)')
|
|
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('-k', '--kinesis_ds', dest='kinesis_ds', required=True)
|
|
parser.add_argument('-i', '--input_file', dest='input_file', required=False)
|
|
parser.add_argument('-s', '--messages_per_sec', dest='mps', type=int, default=-1, required=False)
|
|
parser.add_argument('-r', '--single-run', dest='singel_run', action='store_true', required=False, default=False)
|
|
|
|
args, unknown = parser.parse_known_args()
|
|
config = configparser.ConfigParser()
|
|
|
|
kinesis_data_stream = args.kinesis_ds
|
|
messages_per_sec = int(args.mps)
|
|
|
|
single_run = args.singel_run if hasattr(args, 'singel_run') else False
|
|
|
|
if args.input_file:
|
|
input_file = args.input_file
|
|
else:
|
|
main_path = os.path.abspath(os.path.dirname(__file__))
|
|
input_file = os.path.join(main_path, DEFAULT_DATA_FILE)
|
|
|
|
produce_data(kinesis_data_stream, messages_per_sec, input_file, single_run)
|