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}, | ||
{ | ||
"path": "../airbyte-webapp-e2e-tests" | ||
}, | ||
{ | ||
"path": "../docs" | ||
} | ||
], | ||
"extensions": { | ||
|
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38 changes: 38 additions & 0 deletions
38
airbyte-cdk/python/airbyte_cdk/sources/declarative/datetime/datetime_parser.py
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# | ||
# Copyright (c) 2022 Airbyte, Inc., all rights reserved. | ||
# | ||
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import datetime | ||
from typing import Union | ||
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class DatetimeParser: | ||
""" | ||
Parses and formats datetime objects according to a specified format. | ||
This class mainly acts as a wrapper to properly handling timestamp formatting through the "%s" directive. | ||
%s is part of the list of format codes required by the 1989 C standard, but it is unreliable because it always return a datetime in the system's timezone. | ||
Instead of using the directive directly, we can use datetime.fromtimestamp and dt.timestamp() | ||
""" | ||
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def parse(self, date: Union[str, int], format: str, timezone): | ||
# "%s" is a valid (but unreliable) directive for formatting, but not for parsing | ||
# It is defined as | ||
# The number of seconds since the Epoch, 1970-01-01 00:00:00+0000 (UTC). https://man7.org/linux/man-pages/man3/strptime.3.html | ||
# | ||
# The recommended way to parse a date from its timestamp representation is to use datetime.fromtimestamp | ||
# See https://stackoverflow.com/a/4974930 | ||
if format == "%s": | ||
return datetime.datetime.fromtimestamp(int(date), tz=timezone) | ||
else: | ||
return datetime.datetime.strptime(str(date), format).replace(tzinfo=timezone) | ||
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def format(self, dt: datetime.datetime, format: str) -> str: | ||
# strftime("%s") is unreliable because it ignores the time zone information and assumes the time zone of the system it's running on | ||
# It's safer to use the timestamp() method than the %s directive | ||
# See https://stackoverflow.com/a/4974930 | ||
if format == "%s": | ||
return str(int(dt.timestamp())) | ||
else: | ||
return dt.strftime(format) |
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