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# -*- coding: utf-8 -*-
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# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C)
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# 2015, 2016, 2017, 2018, 2019 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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"""
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Request/response of PutBucketLifecycleConfiguration and
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GetBucketLifecycleConfiguration APIs.
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"""
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# pylint: disable=invalid-name
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from __future__ import absolute_import, annotations
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from abc import ABC
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from dataclasses import dataclass
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from datetime import datetime
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from typing import Optional, Type, TypeVar, cast
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from xml.etree import ElementTree as ET
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from .commonconfig import BaseRule
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from .time import from_iso8601utc, to_iso8601utc
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from .xml import Element, SubElement, find, findall, findtext
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@dataclass(frozen=True)
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class DateDays(ABC):
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"""Base class holds date and days of Transition and Expiration."""
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date: Optional[datetime] = None
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days: Optional[int] = None
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@staticmethod
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def parsexml(
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element: ET.Element) -> tuple[Optional[datetime], Optional[int]]:
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"""Parse XML to date and days."""
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date = from_iso8601utc(findtext(element, "Date"))
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days = findtext(element, "Days")
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return date, int(days) if days else None
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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if self.date is not None:
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SubElement(
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element, "Date", to_iso8601utc(self.date),
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)
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if self.days:
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SubElement(element, "Days", str(self.days))
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return element
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A = TypeVar("A", bound="Transition")
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@dataclass(frozen=True)
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class Transition(DateDays):
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"""Transition."""
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storage_class: Optional[str] = None
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@classmethod
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def fromxml(cls: Type[A], element: ET.Element) -> A:
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"""Create new object with values from XML element."""
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element = cast(ET.Element, find(element, "Transition", True))
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date, days = cls.parsexml(element)
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return cls(date, days, findtext(element, "StorageClass"))
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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element = SubElement(element, "Transition")
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super().toxml(element)
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if self.storage_class:
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SubElement(element, "StorageClass", self.storage_class)
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return element
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B = TypeVar("B", bound="NoncurrentVersionTransition")
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@dataclass(frozen=True)
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class NoncurrentVersionTransition:
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"""Noncurrent version transition."""
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noncurrent_days: Optional[int] = None
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storage_class: Optional[str] = None
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newer_noncurrent_versions: Optional[int] = None
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@classmethod
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def fromxml(cls: Type[B], element: ET.Element) -> B:
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"""Create new object with values from XML element."""
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element = cast(
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ET.Element,
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find(element, "NoncurrentVersionTransition", True),
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)
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noncurrent_days = findtext(element, "NoncurrentDays")
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versions = findtext(element, "NewerNoncurrentVersions")
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return cls(
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int(noncurrent_days) if noncurrent_days else None,
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findtext(element, "StorageClass"),
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int(versions) if versions else None,
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)
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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element = SubElement(element, "NoncurrentVersionTransition")
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if self.noncurrent_days:
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SubElement(element, "NoncurrentDays", str(self.noncurrent_days))
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if self.storage_class:
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SubElement(element, "StorageClass", self.storage_class)
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if self.newer_noncurrent_versions:
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SubElement(element, "NewerNoncurrentVersions",
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str(self.newer_noncurrent_versions))
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return element
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C = TypeVar("C", bound="NoncurrentVersionExpiration")
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@dataclass(frozen=True)
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class NoncurrentVersionExpiration:
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"""Noncurrent version expiration."""
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noncurrent_days: Optional[int] = None
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newer_noncurrent_versions: Optional[int] = None
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@classmethod
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def fromxml(cls: Type[C], element: ET.Element) -> C:
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"""Create new object with values from XML element."""
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element = cast(
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ET.Element,
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find(element, "NoncurrentVersionExpiration", True),
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)
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noncurrent_days = findtext(element, "NoncurrentDays")
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versions = findtext(element, "NewerNoncurrentVersions")
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return cls(int(noncurrent_days) if noncurrent_days else None,
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int(versions) if versions else None)
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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element = SubElement(element, "NoncurrentVersionExpiration")
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if self.noncurrent_days:
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SubElement(element, "NoncurrentDays", str(self.noncurrent_days))
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if self.newer_noncurrent_versions:
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SubElement(element, "NewerNoncurrentVersions",
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str(self.newer_noncurrent_versions))
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return element
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D = TypeVar("D", bound="Expiration")
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@dataclass(frozen=True)
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class Expiration(DateDays):
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"""Expiration."""
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expired_object_delete_marker: Optional[bool] = None
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@classmethod
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def fromxml(cls: Type[D], element: ET.Element) -> D:
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"""Create new object with values from XML element."""
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element = cast(ET.Element, find(element, "Expiration", True))
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date, days = cls.parsexml(element)
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expired_object_delete_marker = findtext(
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element, "ExpiredObjectDeleteMarker",
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)
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if expired_object_delete_marker is None:
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return cls(date, days, None)
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if expired_object_delete_marker.title() not in ["False", "True"]:
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raise ValueError(
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"value of ExpiredObjectDeleteMarker must be "
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"'True' or 'False'",
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)
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return cls(date, days, expired_object_delete_marker.title() == "True")
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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element = SubElement(element, "Expiration")
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super().toxml(element)
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if self.expired_object_delete_marker is not None:
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SubElement(
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element,
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"ExpiredObjectDeleteMarker",
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str(self.expired_object_delete_marker).lower(),
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)
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return element
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E = TypeVar("E", bound="AbortIncompleteMultipartUpload")
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@dataclass(frozen=True)
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class AbortIncompleteMultipartUpload:
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"""Abort incomplete multipart upload."""
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days_after_initiation: Optional[int] = None
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@classmethod
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def fromxml(cls: Type[E], element: ET.Element) -> E:
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"""Create new object with values from XML element."""
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element = cast(
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ET.Element,
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find(element, "AbortIncompleteMultipartUpload", True),
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)
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days_after_initiation = findtext(element, "DaysAfterInitiation")
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return cls(
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int(days_after_initiation) if days_after_initiation else None,
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)
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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element = SubElement(element, "AbortIncompleteMultipartUpload")
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if self.days_after_initiation:
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SubElement(
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element,
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"DaysAfterInitiation",
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str(self.days_after_initiation),
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)
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return element
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F = TypeVar("F", bound="Rule")
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@dataclass(frozen=True)
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class Rule(BaseRule):
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"""Lifecycle rule. """
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abort_incomplete_multipart_upload: Optional[
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AbortIncompleteMultipartUpload] = None
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expiration: Optional[Expiration] = None
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noncurrent_version_expiration: Optional[NoncurrentVersionExpiration] = None
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noncurrent_version_transition: Optional[NoncurrentVersionTransition] = None
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transition: Optional[Transition] = None
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def __post_init__(self):
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if (not self.abort_incomplete_multipart_upload and not self.expiration
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and not self.noncurrent_version_expiration
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and not self.noncurrent_version_transition
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and not self.transition):
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raise ValueError(
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"at least one of action (AbortIncompleteMultipartUpload, "
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"Expiration, NoncurrentVersionExpiration, "
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"NoncurrentVersionTransition or Transition) must be specified "
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"in a rule")
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def _require_subclass_implementation(self) -> None:
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"""Dummy abstract method to enforce abstract class behavior."""
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@classmethod
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def fromxml(cls: Type[F], element: ET.Element) -> F:
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"""Create new object with values from XML element."""
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status, rule_filter, rule_id = cls.parsexml(element)
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abort_incomplete_multipart_upload = (
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None if find(element, "AbortIncompleteMultipartUpload") is None
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else AbortIncompleteMultipartUpload.fromxml(element)
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)
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expiration = (
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None if find(element, "Expiration") is None
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else Expiration.fromxml(element)
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)
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noncurrent_version_expiration = (
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None if find(element, "NoncurrentVersionExpiration") is None
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else NoncurrentVersionExpiration.fromxml(element)
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)
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noncurrent_version_transition = (
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None if find(element, "NoncurrentVersionTransition") is None
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else NoncurrentVersionTransition.fromxml(element)
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)
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transition = (
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None if find(element, "Transition") is None
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else Transition.fromxml(element)
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)
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return cls(
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status=status,
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rule_filter=rule_filter,
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rule_id=rule_id,
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abort_incomplete_multipart_upload=(
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abort_incomplete_multipart_upload
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),
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expiration=expiration,
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noncurrent_version_expiration=noncurrent_version_expiration,
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noncurrent_version_transition=noncurrent_version_transition,
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transition=transition,
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)
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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if element is None:
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raise ValueError("element must be provided")
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element = SubElement(element, "Rule")
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super().toxml(element)
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if self.abort_incomplete_multipart_upload:
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self.abort_incomplete_multipart_upload.toxml(element)
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if self.expiration:
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self.expiration.toxml(element)
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if self.noncurrent_version_expiration:
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self.noncurrent_version_expiration.toxml(element)
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if self.noncurrent_version_transition:
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self.noncurrent_version_transition.toxml(element)
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if self.transition:
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self.transition.toxml(element)
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return element
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G = TypeVar("G", bound="LifecycleConfig")
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@dataclass(frozen=True)
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class LifecycleConfig:
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"""Lifecycle configuration."""
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rules: list[Rule]
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@classmethod
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def fromxml(cls: Type[G], element: ET.Element) -> G:
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"""Create new object with values from XML element."""
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elements = findall(element, "Rule")
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rules = []
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for tag in elements:
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rules.append(Rule.fromxml(tag))
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return cls(rules)
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def toxml(self, element: Optional[ET.Element]) -> ET.Element:
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"""Convert to XML."""
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element = Element("LifecycleConfiguration")
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for rule in self.rules:
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rule.toxml(element)
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return element
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