55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
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import os
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import inspect
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import hashlib
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from pathlib import Path
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import pickle
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def get_cache_path() -> Path:
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"""
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Return the path to the user cache.
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"""
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path = Path.home() / ".cache" / "onshape-to-robot"
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path.mkdir(parents=True, exist_ok=True)
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return path
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def can_cache(method, *args, **kwargs) -> bool:
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"""
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Check if the cache can be used.
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When using wmv=w, the current workspace is used, which make it impossible to cache.
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"""
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signature = inspect.signature(method)
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wmv = None
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if "wmv" in signature.parameters:
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wmv = signature.parameters["wmv"].default
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if "wmv" in kwargs:
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wmv = kwargs["wmv"]
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return wmv != "w"
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def cache_response(method):
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"""
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Decorator that caches the response of a method.
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"""
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def cached_call(*args, **kwargs):
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# Checking if the method can be cached
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if not can_cache(method, *args, **kwargs):
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return method(*args, **kwargs)
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# Building filename that is unique for method/args combination
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method_name = method.__qualname__
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arguments = {"args": args, "kwargs": kwargs}
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arguments_hash = hashlib.sha1(pickle.dumps(arguments)).hexdigest()
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filename = f"{get_cache_path()}/{method_name}_{arguments_hash}.pkl"
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if not os.path.exists(filename):
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result = method(*args, **kwargs)
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with open(filename, "wb") as f:
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pickle.dump(result, f)
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return pickle.load(open(filename, "rb"))
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return cached_call
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