124 lines
5 KiB
Python
124 lines
5 KiB
Python
import json
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from datetime import datetime, timedelta
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from aurora.models import AuroraBaseModel
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class JSONEncoder(json.JSONEncoder):
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def default(self, o):
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if isinstance(o, datetime):
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return int(o.timestamp())
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if isinstance(o, timedelta):
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return str(o)
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if isinstance(o, AuroraBaseModel):
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return o.to_json()
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return super().default(o)
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# This is a wrapper around the json module's dumps function that uses our custom JSONEncoder class
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def dumps(obj, *, skipkeys=False, ensure_ascii=True, check_circular=True,
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allow_nan=True, indent=None, separators=None,
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default=None, sort_keys=False, **kw) -> str:
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"""Serialize ``obj`` to a JSON formatted ``str``.
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If ``skipkeys`` is true then ``dict`` keys that are not basic types
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(``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped
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instead of raising a ``TypeError``.
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If ``ensure_ascii`` is false, then the return value can contain non-ASCII
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characters if they appear in strings contained in ``obj``. Otherwise, all
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such characters are escaped in JSON strings.
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If ``check_circular`` is false, then the circular reference check
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for container types will be skipped and a circular reference will
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result in an ``RecursionError`` (or worse).
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If ``allow_nan`` is false, then it will be a ``ValueError`` to
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serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``) in
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strict compliance of the JSON specification, instead of using the
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JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``).
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If ``indent`` is a non-negative integer, then JSON array elements and
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object members will be pretty-printed with that indent level. An indent
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level of 0 will only insert newlines. ``None`` is the most compact
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representation.
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If specified, ``separators`` should be an ``(item_separator, key_separator)``
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tuple. The default is ``(', ', ': ')`` if *indent* is ``None`` and
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``(',', ': ')`` otherwise. To get the most compact JSON representation,
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you should specify ``(',', ':')`` to eliminate whitespace.
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``default(obj)`` is a function that should return a serializable version
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of obj or raise TypeError. The default simply raises TypeError.
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If *sort_keys* is true (default: ``False``), then the output of
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dictionaries will be sorted by key.
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"""
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return json.dumps(
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obj,
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cls=JSONEncoder,
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skipkeys=skipkeys,
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ensure_ascii=ensure_ascii,
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check_circular=check_circular,
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allow_nan=allow_nan,
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indent=indent,
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separators=separators,
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default=default,
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sort_keys=sort_keys,
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**kw
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)
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# This is a wrapper around the json module's dump function that uses our custom JSONEncoder class
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def dump(obj, fp, *, skipkeys=False, ensure_ascii=True, check_circular=True,
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allow_nan=True, indent=None, separators=None,
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default=None, sort_keys=False, **kw) -> str:
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"""Serialize ``obj`` as a JSON formatted stream to ``fp`` (a
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``.write()``-supporting file-like object).
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If ``skipkeys`` is true then ``dict`` keys that are not basic types
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(``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped
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instead of raising a ``TypeError``.
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If ``ensure_ascii`` is false, then the strings written to ``fp`` can
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contain non-ASCII characters if they appear in strings contained in
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``obj``. Otherwise, all such characters are escaped in JSON strings.
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If ``check_circular`` is false, then the circular reference check
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for container types will be skipped and a circular reference will
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result in an ``RecursionError`` (or worse).
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If ``allow_nan`` is false, then it will be a ``ValueError`` to
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serialize out of range ``float`` values (``nan``, ``inf``, ``-inf``)
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in strict compliance of the JSON specification, instead of using the
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JavaScript equivalents (``NaN``, ``Infinity``, ``-Infinity``).
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If ``indent`` is a non-negative integer, then JSON array elements and
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object members will be pretty-printed with that indent level. An indent
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level of 0 will only insert newlines. ``None`` is the most compact
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representation.
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If specified, ``separators`` should be an ``(item_separator, key_separator)``
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tuple. The default is ``(', ', ': ')`` if *indent* is ``None`` and
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``(',', ': ')`` otherwise. To get the most compact JSON representation,
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you should specify ``(',', ':')`` to eliminate whitespace.
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``default(obj)`` is a function that should return a serializable version
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of obj or raise TypeError. The default simply raises TypeError.
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If *sort_keys* is true (default: ``False``), then the output of
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dictionaries will be sorted by key.
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"""
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return json.dump(
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obj,
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fp,
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cls=JSONEncoder,
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skipkeys=skipkeys,
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ensure_ascii=ensure_ascii,
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check_circular=check_circular,
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allow_nan=allow_nan,
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indent=indent,
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separators=separators,
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default=default,
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sort_keys=sort_keys,
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**kw
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)
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