Source code for acme.fields

"""ACME JSON fields."""
import datetime
import logging
from typing import Any

import josepy as jose
import pyrfc3339

logger = logging.getLogger(__name__)

[docs]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)
[docs] def decode(self, value: Any) -> Any: if value != self.value: raise jose.DeserializationError('Expected {0!r}'.format(self.value)) return self.value
[docs] def encode(self, value: Any) -> Any: if value != self.value: logger.warning( 'Overriding fixed field (%s) with %r', self.json_name, value) return value
[docs]class RFC3339Field(jose.Field): """RFC3339 field encoder/decoder. Handles decoding/encoding between RFC3339 strings and aware (not naive) `datetime.datetime` objects (e.g. ````). """
[docs] @classmethod def default_encoder(cls, value: datetime.datetime) -> str: return pyrfc3339.generate(value)
[docs] @classmethod def default_decoder(cls, value: str) -> datetime.datetime: try: return pyrfc3339.parse(value) except ValueError as error: raise jose.DeserializationError(error)
[docs]def fixed(json_name: str, value: Any) -> Any: """Generates a type-friendly Fixed field.""" return Fixed(json_name, value)
[docs]def rfc3339(json_name: str, omitempty: bool = False) -> Any: """Generates a type-friendly RFC3339 field.""" return RFC3339Field(json_name, omitempty=omitempty)