aiothrottle 0.1.0

Throttling, flow controlling StreamReader for aiohttp

Throttling, flow controlling StreamReader for aiohttp

Requirements

• Python >= 3.3

• asyncio https://pypi.python.org/pypi/asyncio

• aiohttp https://pypi.python.org/pypi/aiohttp

License

aiothrottle is offered under the GPL v3 license.

Source code

The latest developer version is available in a github repository: https://github.com/panda73111/aiothrottle

Usage

import functools
import aiohttp
import aiothrottle

# setup the rate limit
kbps = 200
partial = functools.partial(
    aiothrottle.ThrottledStreamReader, rate_limit=kbps * 1024)
aiohttp.client_reqrep.ClientResponse.flow_control_class = partial

# download a large file without blocking bandwidth
response = aiohttp.request("GET", "http://example.com/largefile.zip")
with open("largefile.zip", "wb") as file:
    read_next = True
    while read_next:
        # read 1 MB chunks
        chunk = response.content.read(2**20)
        file.write(chunk)
        read_next = len(chunk) != 0
response.close()

# unset the rate limit
aiohttp.client_reqrep.ClientResponse.flow_control_class = (
    aiohttp.streams.FlowControlStreamReader)

CHANGES

0.1.0 (08-01-2015)

• Initial release with basic throttling functionality