55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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# MinIO Python Library for Amazon S3 Compatible Cloud Storage,
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# (C) 2020 MinIO, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Credential definitions to access S3 service."""
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from __future__ import annotations
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from dataclasses import dataclass
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from datetime import datetime, timedelta, timezone
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from typing import Optional
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@dataclass(frozen=True)
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class Credentials:
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"""
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Represents credentials access key, secret key and session token.
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"""
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access_key: str
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secret_key: str
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session_token: Optional[str] = None
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expiration: Optional[datetime] = None
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def __post_init__(self):
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if not self.access_key:
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raise ValueError("Access key must not be empty")
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if not self.secret_key:
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raise ValueError("Secret key must not be empty")
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if self.expiration and self.expiration.tzinfo:
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object.__setattr__(
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self, "expiration",
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self.expiration.astimezone(timezone.utc).replace(tzinfo=None),
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)
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def is_expired(self) -> bool:
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"""Check whether this credentials expired or not."""
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return (
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self.expiration < (datetime.utcnow() + timedelta(seconds=10))
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if self.expiration else False
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)
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