Sybren A. Stüvel
5039a33053
Making the blender_cloud.pillar and blender_cloud.cache modules usable without Blender required some moving of the code, from __init__.py to blender.py. CacheControl requires the lockfile package, which increases the number of bundled wheel files to 3. Those are now managed by blender_cloud.wheels.load_wheels(). The wheels are only loaded if the Python installation doesn't yet contain the required packages. This allows development with virtualenv-installed packages, debugging in the IDE, etc.
48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
"""Cache management."""
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import os
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import logging
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import requests
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import cachecontrol
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from cachecontrol.caches import FileCache
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from . import appdirs
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log = logging.getLogger(__name__)
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_session = None # requests.Session object that's set up for caching by requests_session().
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def cache_directory() -> str:
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"""Returns an OS-specifc cache location, and ensures it exists.
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Should be replaced with a call to bpy.utils.user_resource('CACHE', ...)
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once https://developer.blender.org/T47684 is finished.
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"""
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# TODO: just use bpy.utils.user_resource('CACHE', ...)
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cache_dir = os.path.join(appdirs.user_cache_dir(appname='Blender', appauthor=False), 'blender_cloud')
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os.makedirs(cache_dir, exist_ok=True)
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return cache_dir
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def requests_session() -> requests.Session:
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"""Creates a Requests-Cache session object."""
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global _session
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if _session is not None:
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return _session
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cache_dir = cache_directory()
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cache_name = os.path.join(cache_dir, 'blender_cloud_http')
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log.info('Storing cache in %s' % cache_name)
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_session = cachecontrol.CacheControl(sess=requests.session(),
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cache=FileCache(cache_name))
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return _session
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