Created
November 12, 2017 13:26
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# -*-: coding: utf-8 -*- | |
import asyncio | |
import aiohttp | |
import traceback | |
import datetime | |
import math | |
def hsize(s): | |
suffixs = ["B", "KB", "MB", "GB"] | |
size = s | |
for suf in suffixs: | |
if size < 1024: | |
break | |
size = size/1024 | |
return "{}{}".format(math.ceil(size), suf) | |
def htime(t): | |
suffixs = ["sec", "min", "hour"] | |
time = t | |
for suf in suffixs: | |
if time < 60: | |
break | |
time = time/60 | |
return "{}{}".format(math.ceil(time), suf) | |
async def meaured_download(did, session, url): | |
print("{} trying to start download...".format(did)) | |
download_size = 0 | |
speed = 0 | |
start_ts = datetime.datetime.now().timestamp() | |
try: | |
async with session.get(url) as resp: | |
if resp.status >= 200 and resp.status < 300: | |
while True: | |
data = await resp.content.read(2000) | |
data_len = len(data) | |
if data_len <= 0: | |
break | |
download_size = download_size + data_len | |
except Exception as err: | |
print("{} got error while downloading...".format(did)) | |
traceback.print_exc() | |
end_ts = datetime.datetime.now().timestamp() | |
total_time = end_ts - start_ts | |
speed = int(download_size / total_time) | |
print("{} finished, total time is {}, total download size is {}, average speed is {}/s".format(did, htime(total_time), hsize(download_size), hsize(speed))) | |
return (download_size, speed) | |
def main(wid, url, conn_count): | |
print("woker {} started".format(wid)) | |
tasks = [] | |
loop_count = int(conn_count) | |
loop = asyncio.get_event_loop() | |
session = aiohttp.ClientSession(connector=aiohttp.TCPConnector(limit=0), read_timeout=0) | |
for i in range(loop_count): | |
tasks.append(asyncio.ensure_future(meaured_download(i, session, url))) | |
loop.run_until_complete(asyncio.gather(*tasks)) | |
print("worker {} finished".format(wid)) | |
def usage(pname): | |
print("Usage: {} url conn_count worker_count".format(pname)) | |
if __name__ == "__main__": | |
import sys | |
if len(sys.argv) != 4: | |
usage(sys.argv[0]) | |
exit(1) | |
worker_count = int(sys.argv[3]) | |
from multiprocessing import Process | |
p = [] | |
for i in range(worker_count): | |
proc = Process(target=main, args=(i, sys.argv[1], sys.argv[2])) | |
proc.start() | |
p.append(proc) | |
for i in range(worker_count): | |
p[i].join() |
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