69559de342
After much benchmarking, it was decided that it is preferable to remove the simplejson dependency. This comes with the caveat that json handling is slower on Python<=2.6, but faster on Python>2.7, including Python 3 and pypy. The recommendation moving forward is to deploy Marconi on Python>2.7. Change-Id: If7a9380bd32023ec973fd2f267255723aaa49306
57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# Copyright (c) 2013 Rackspace, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
|
# implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import json
|
|
|
|
|
|
class MalformedJSON(ValueError):
|
|
"""JSON string is not valid."""
|
|
pass
|
|
|
|
|
|
class OverflowedJSONInteger(OverflowError):
|
|
"""JSON integer is too large."""
|
|
pass
|
|
|
|
|
|
def _json_int(s):
|
|
"""Parse a string as a base 10 64-bit signed integer."""
|
|
i = int(s)
|
|
if not (int(-2 ** 63) <= i <= int(2 ** 63 - 1)):
|
|
raise OverflowedJSONInteger()
|
|
|
|
return i
|
|
|
|
|
|
def read_json(stream, len):
|
|
"""Like json.load, but converts ValueError to MalformedJSON upon failure.
|
|
|
|
:param stream: a file-like object
|
|
:param len: the number of bytes to read from stream
|
|
"""
|
|
try:
|
|
return json.loads(stream.read(len), parse_int=_json_int)
|
|
|
|
except ValueError as ex:
|
|
raise MalformedJSON(ex)
|
|
|
|
|
|
def to_json(obj):
|
|
"""Like json.dumps, but outputs a UTF-8 encoded string.
|
|
|
|
:param obj: a JSON-serializable object
|
|
"""
|
|
return json.dumps(obj, ensure_ascii=False)
|