khodowany
30 lines
990 B
Python
30 lines
990 B
Python
"""Role cache persistence; cache identity never supplies musical randomness."""
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import json
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import generator.cache
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import generator.fretboard
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import generator.validation
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ENTRYPOINTS = ('generator.composition',)
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def code_key():
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return generator.cache.fingerprint(generator.cache.source_identity(ENTRYPOINTS))
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def restore(path, key):
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if path is None or not path.is_file() or path.is_symlink():
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return None
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try:
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entry = json.loads(path.read_text())
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value = entry['result']
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if entry['key'] == key and entry['digest'] == generator.cache.fingerprint(value):
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generator.validation.validate_document(value['document'])
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generator.fretboard.validate_document(value['document'])
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return {**value, 'cache_hit': True}
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except (OSError, ValueError, KeyError, TypeError):
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pass
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return None
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def store(path, key, value):
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if path is not None:
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generator.cache.write_json(path, {'key': key, 'digest': generator.cache.fingerprint(value), 'result': value})
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