Skip to main content

sessions for aiohttp.web

Project description

aiohttp_session

https://travis-ci.org/aio-libs/aiohttp-session.svg?branch=master https://codecov.io/github/aio-libs/aiohttp-session/coverage.svg?branch=master https://readthedocs.org/projects/aiohttp-session/badge/?version=latest

The library provides sessions for aiohttp.web.

Usage

The library allows us to store user-specific data into a session object.

The session object has a dict-like interface (operations like session[key] = value, value = session[key] etc. are present).

Before processing the session in a web-handler, you have to register the session middleware in aiohttp.web.Application.

A trivial usage example:

import time
import base64
from cryptography import fernet
from aiohttp import web
from aiohttp_session import setup, get_session
from aiohttp_session.cookie_storage import EncryptedCookieStorage


async def handler(request):
    session = await get_session(request)
    last_visit = session['last_visit'] if 'last_visit' in session else None
    session['last_visit'] = time.time()
    text = 'Last visited: {}'.format(last_visit)
    return web.Response(text=text)


def make_app():
    app = web.Application()
    # secret_key must be 32 url-safe base64-encoded bytes
    fernet_key = fernet.Fernet.generate_key()
    secret_key = base64.urlsafe_b64decode(fernet_key)
    setup(app, EncryptedCookieStorage(secret_key))
    app.router.add_get('/', handler)
    return app


web.run_app(make_app())

All storages use an HTTP Cookie named AIOHTTP_SESSION for storing data. This can be modified by passing the keyword argument cookie_name to the storage class of your choice.

Available session storages are:

  • aiohttp_session.SimpleCookieStorage() – keeps session data as a plain JSON string in the cookie body. Use the storage only for testing purposes, it’s very non-secure.

  • aiohttp_session.cookie_storage.EncryptedCookieStorage(secret_key) – stores the session data into a cookie as SimpleCookieStorage but encodes it via AES cipher. secrect_key is a bytes key for AES encryption/decryption, the length should be 32 bytes.

    Requires cryptography library:

    $ pip install aiohttp_session[secure]
    
  • aiohttp_session.redis_storage.RedisStorage(redis_pool) – stores JSON encoded data in redis, keeping only the redis key (a random UUID) in the cookie. redis_pool is a aioredis pool object, created by await aioredis.create_redis_pool(...) call.

    Requires aioredis library (only versions 1.0+ are supported):

    $ pip install aiohttp_session[aioredis]
    

Developing

Install for local development:

$ pip install -r requirements-dev.txt

Run tests with:

$ pytest -sv tests/

License

aiohttp_session is offered under the Apache 2 license.

Changes

2.5.0 (2018-05-12)

  • Add an API for requesting new session explicitly #281

2.4.0 (2018-05-04)

  • Fix a bug for session fixation #272

2.3.0 (2018-02-13)

  • Support custom encoder and decoder by all storages #252
  • Bump to aiohttp 3.0

2.2.0 (2018-01-31)

  • Fixed the formatting of an error handling bad middleware return types. #249

2.1.0 (2017-11-24)

  • Add session.set_new_identity() method for changing identity for a new session #236

2.0.1 (2017-11-22)

  • Replace assertions in aioredis installation checks by RuntimeError #235

2.0.0 (2017-11-21)

  • Update to aioredis 1.0+. The aiohttp-session 2.0 is not compatible with aioredis 0.X #234

1.2.1 (2017-11-20)

  • Pin aioredis<1.0 #231

1.2.0 (2017-11-06)

  • Add MemcachedStorage #224

1.1.0 (2017-11-03)

  • Upgrade middleware to new style from aiohttp 2.3+

1.0.1 (2017-09-13)

  • Add key_factory attribute for redis_storage #205

1.0.0 (2017-07-27)

  • Catch decoder exception in RedisStorage on data load #175
  • Specify domain and path on cookie deletion #171

0.8.0 (2016-12-04)

  • Use time.time() instead of time.monotonic() for absolute times #81

0.7.0 (2016-09-24)

  • Fix tests to be compatible with aiohttp upstream API for client cookies

0.6.0 (2016-09-08)

  • Add expires field automatically to support older browsers #43
  • Respect session.max_age in redis storage #45
  • Always pass default max_age from storage into session #45

0.5.0 (2016-02-21)

  • Handle cryptography.fernet.InvalidToken exception by providing an empty session #29

0.4.0 (2016-01-06)

  • Add optional NaCl encrypted storage #20
  • Relax EncryptedCookieStorage to accept base64 encoded string, e.g. generated by Fernet.generate_key.
  • Add setup() function
  • Save the session even on exception in the middleware chain

0.3.0 (2015-11-20)

  • Reflect aiohttp changes: minimum required Python version is 3.4.1
  • Use explicit ‘aiohttp_session’ package

0.2.0 (2015-09-07)

  • Add session.created property #14
  • Replaced PyCrypto with crypthography library #16

0.1.2 (2015-08-07)

  • Add manifest file #15

0.1.1 (2015-04-20)

  • Fix #7: stop cookie name growing each time session is saved

0.1.0 (2015-04-13)

  • First public release

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
aiohttp_session-2.5.1-py3-none-any.whl (13.2 kB) Copy SHA256 hash SHA256 Wheel py3 May 12, 2018
aiohttp-session-2.5.1.tar.gz (99.3 kB) Copy SHA256 hash SHA256 Source None May 12, 2018

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN DigiCert DigiCert EV certificate StatusPage StatusPage Status page