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QuantumGhost
182828657b
* feat(python): Add specific error classes for StorageInvocation Replace generic `Exception` raises with `NotFoundError` when the key is missing, and `StorageInvocationError` for other response errors. This improves error handling at call sites by avoiding overly generic exceptions. # Conflicts: # python/dify_plugin/invocations/storage.py * test(python): Add test cases for `StorageInvocation` - Ensure `StorageInvocation` raises the correct exceptions when data is missing or `_backwards_invoke` returns an invalid response. - Verify that `StorageInvocation` correctly processes the result returned by `_backwards_invoke`. * chore(python): fix linter violations * feat(python): Change the exception `StorageInvocation.exist` raised * test(python): Add test cases for `StorageInvocation.exist`.
90 lines
2.4 KiB
Python
90 lines
2.4 KiB
Python
from binascii import hexlify, unhexlify
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from dify_plugin.core.entities.invocation import InvokeType
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from dify_plugin.core.runtime import BackwardsInvocation
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class StorageInvocationError(Exception):
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"""StorageInvocationError is a custom exception raised
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when an issue occurs during the execution of a storage invocation.
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"""
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pass
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class StorageInvocation(BackwardsInvocation[dict]):
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def set(self, key: str, val: bytes) -> None:
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"""
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set a value into persistence storage.
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:raises:
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StorageInvocationError: If the invocation returns an invalid data.
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"""
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for data in self._backwards_invoke(
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InvokeType.Storage,
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dict,
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{"opt": "set", "key": key, "value": hexlify(val).decode()},
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):
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if data["data"] == "ok":
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return
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raise StorageInvocationError(f"unexpected data: {data['data']}")
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def get(self, key: str) -> bytes:
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"""get a key from persistence storage.
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:raises:
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NotFoundError: If the caller gets a key that does not exist.
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"""
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for data in self._backwards_invoke(
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InvokeType.Storage,
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dict,
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{
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"opt": "get",
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"key": key,
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},
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):
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return unhexlify(data["data"])
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raise StorageInvocationError("no data found")
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def delete(self, key: str) -> None:
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"""delete a key from persistence storage.
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:raises:
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StorageInvocationError: If the invocation returns an invalid data.
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"""
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for data in self._backwards_invoke(
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InvokeType.Storage,
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dict,
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{
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"opt": "del",
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"key": key,
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},
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):
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if data["data"] == "ok":
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return
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raise StorageInvocationError(f"unexpected data: {data['data']}")
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raise StorageInvocationError("no data found")
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def exist(self, key: str) -> bool:
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"""Check for the existence of a key in persistence storage.
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:raises:
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StorageInvocationError: If the invocation does not return any data.
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"""
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for data in self._backwards_invoke(
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InvokeType.Storage,
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dict,
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{
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"opt": "exist",
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"key": key,
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},
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):
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return data["data"]
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raise StorageInvocationError("no data found")
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