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#!/usr/bin/env python
"""
Example of converting data cached in older versions of requests-cache (<=0.5.2)
into the current format
"""
from requests import Response
import requests_cache.backends.base
from requests_cache import CachedResponse, CachedSession
class _Store:
pass
# Add placeholder object used by pickle to deserialize old responses
requests_cache.backends.base._Store = _Store
requests_cache.backends.base._RawStore = _Store
def convert_old_response(cached_response, timestamp):
temp_response = Response()
for field in Response.__attrs__:
setattr(temp_response, field, getattr(cached_response, field, None))
new_response = CachedResponse(temp_response)
new_response.created_at = timestamp
return new_response
def convert_cache(*args, **kwargs):
session = CachedSession(*args, **kwargs)
print(f'Checking {len(session.cache.responses)} cached responses')
with session.cache.responses.bulk_commit():
for key, response in session.cache.responses.items():
if isinstance(response, tuple):
print(f'Converting response {key}')
session.cache.responses[key] = convert_old_response(*response)
print('Conversion complete')
# Example: convert a cache named 'demo_cache.sqlite' in the current directory
if __name__ == '__main__':
convert_cache('demo_cache.sqlite')
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