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annotate weather_server/common.py @ 17:fdb874e0b270

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graph: Update style and do HiDPI properly.
author Paul Fisher <paul@pfish.zone>
date Sat, 12 Oct 2019 20:40:11 -0400
parents 52ef21607b31
children
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52ef21607b31 server: Create endpoint to get some recent readings.
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1 import datetime
52ef21607b31 server: Create endpoint to get some recent readings.
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2 import json
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efe7a1eff167 Create initial logger for weather server.
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3 import typing as t
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4
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5 import bson
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6 import pytz
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8 BSON_OPTIONS = bson.DEFAULT_CODEC_OPTIONS.with_options(
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9 tz_aware=True, tzinfo=pytz.UTC)
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12 def bson_encode(data: t.Dict[str, t.Any]) -> bytes:
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13 return bson.BSON.encode(data, codec_options=BSON_OPTIONS)
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16 class DateEncoder(json.JSONEncoder):
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18 def default(self, o: t.Any) -> t.Any:
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19 if not isinstance(o, datetime.datetime):
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20 return super().default(o)
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21 return o.timestamp()
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24 JSON_ENCODER = DateEncoder(sort_keys=True)
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27 def json_dumps(data: t.Any) -> str:
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28 return JSON_ENCODER.encode(data)
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31 def utc_now():
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32 return datetime.datetime.utcnow().replace(tzinfo=pytz.UTC)