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How to install BeakerHelpers
- Download and install ActivePython
- Open Command Prompt
- Type
pypm install beakerhelpers
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BeakerHelpers is a Beaker extension that can show the active sessions and clean the old ones. Currently it only works with beaker.ext.database storage backend.
BeakerHelpers is also a namespace package so new plugins can be created under this namespace.
You can find the Git repository at github.com
Get / Show Sessions Usage
You can call get_sessions to get a list of active sessions (dicts):
>>> import sqlalchemy
>>> from beakerhelpers.sessions import get_sessions
>>> sessions_table = sqlalchemy.Table('beaker_cache',
... sqlalchemy.MetaData('sqlite:///my.db'), autoload=True) >>> get_sessions(sessions_table, timeout=3600) # timeout in seconds [{ '_accessed_time': datetime.datetime(2010, 1, 1, 10, 10, 10), '_creation_time': datetime.datetime(2010, 1, 1, 08, 40, 00), 'user_name': u'john@doe.com', }]
The above form is suitable for Python access. If you want to provide this data to the user you could use show_sessions with the same parameters instead:
>>> print show_sessions(sessions_table, timeout=3600)
_accessed_time | _creation_time | user_name
2010-01-01 10:10:10 | 2010-01-01 08:40:00 | john@doe.com
However you can use paster beakersessions to call the show_sessions from the console:
$ <env>/bin/paster beakersessions cfg/prod.ini
_accessed_time | _creation_time | user_name
2010-01-01 10:10:10 | 2010-01-01 08:40:00 | john@doe.com
In this case the cfg/prod.ini file should be a paste.deploy loadable configuration file. BeakerHelpers expects to find these keys in the [app:main] section of cfg/prod.ini:
- beaker.session.type = ext:database - the only supported backend (yet)
- beaker.session.url - an SQLAlchemy engine URL
- beaker.session.timeout - session timeout in seconds
- beaker.session.table_name - (optional) session storage table.
According to beaker.ext.database, defaults to beaker_cache.
paster beakersessions command also takes two optional arguments:
- --prefix, -p - beaker key prefix in the config file, defaults to
beaker.session - --timeout, -t - do not show sessions older than the timeout. Timeout examples:
- 3s - 3 seconds
- 14m - 14 minutes
- 36h - 36 hours
- 2d - 2 days
- 0 - show all sessions (ignore timeout even in the config file)
If not provided the timeout will be taken from the config file, <prefix>.timeout (seconds).
Session Cleanup Usage
You can use cleanup_sessions from your Python scripts to remove old sessions:
>>> import sqlalchemy
>>> from beakerhelpers.sessions import cleanup_sessions
>>> sessions_table = sqlalchemy.Table('beaker_cache',
... sqlalchemy.MetaData('sqlite:///my.db'), autoload=True) >>> cleanup_sessions(sessions_table, timeout=3600) # timeout in seconds
The sessions older than 1 hour would get cleaned. However, session cleanup is particularly convenient to be called as a paste script:
$ <env>/bin/paster beakercleanup cfg/prod.ini
It expects the same config file structure and takes the same optional arguments as beakersessions. However, in this case sessions older than --timeout will be removed.
Attention - BeakerShowSessions and BeakerCleanup users
Due to namespace issues BeakerShowSessions and BeakerCleanup can not be installed with pip and/or easy_install. Their functionality got merged into this package and access became simpler. We strongly encourage to use BeakerHelpers instead.
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