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Direktori : /usr/lib/python3/dist-packages/acme/ |
Current File : //usr/lib/python3/dist-packages/acme/fields.py |
"""ACME JSON fields.""" import datetime import logging from typing import Any import josepy as jose import pyrfc3339 logger = logging.getLogger(__name__) class Fixed(jose.Field): """Fixed field.""" def __init__(self, json_name: str, value: Any) -> None: self.value = value super().__init__( json_name=json_name, default=value, omitempty=False) def decode(self, value: Any) -> Any: if value != self.value: raise jose.DeserializationError('Expected {0!r}'.format(self.value)) return self.value def encode(self, value: Any) -> Any: if value != self.value: logger.warning( 'Overriding fixed field (%s) with %r', self.json_name, value) return value class RFC3339Field(jose.Field): """RFC3339 field encoder/decoder. Handles decoding/encoding between RFC3339 strings and aware (not naive) `datetime.datetime` objects (e.g. ``datetime.datetime.now(pytz.UTC)``). """ @classmethod def default_encoder(cls, value: datetime.datetime) -> str: return pyrfc3339.generate(value) @classmethod def default_decoder(cls, value: str) -> datetime.datetime: try: return pyrfc3339.parse(value) except ValueError as error: raise jose.DeserializationError(error) def fixed(json_name: str, value: Any) -> Any: """Generates a type-friendly Fixed field.""" return Fixed(json_name, value) def rfc3339(json_name: str, omitempty: bool = False) -> Any: """Generates a type-friendly RFC3339 field.""" return RFC3339Field(json_name, omitempty=omitempty)