Current File : //var/opt/nydus/ops/primordial/timeutils.py
# -*- coding: utf-8 -*-
from typing import Optional
import datetime
from pytz import utc as UTC
from primordial.constants import CANONICAL_TIMESTRING_FORMAT, CANONICAL_TIMESTRING_FORMAT_NO_MICROSECONDS
def datetime_to_epoch_seconds(in_time: datetime.datetime) -> int:
"""
Return integer seconds since epoch.
:param in_time: Datetime
:returns: Integer seconds since epoch
"""
return int((in_time - datetime.datetime(1970, 1, 1)).total_seconds())
def iso8601_utc(dt: datetime.datetime, tz: Optional[datetime.tzinfo] = None, microseconds: bool = True) -> str:
"""
Return a string representation of a datetime in ISO8601 format (YYYY-MM-DDTHH:MM:SS.ssssssZ)
in the UTC (Z) timezone.
:param dt: The datetime object.
:param tz: The timezone to assume when coverting a naive datetime to UTC (Required if `dt` is naive).
:param microseconds: Whether to include microseconds in the representation. Defaults to `True`.
:returns: ISO8601-formatted string representation
:raises ValueError: If the datetime is naive, and no tz is provided
"""
tformat = CANONICAL_TIMESTRING_FORMAT if microseconds else CANONICAL_TIMESTRING_FORMAT_NO_MICROSECONDS
if dt.tzinfo is None:
if tz is None:
raise ValueError('`tz` param must be provided if datetime object is naive')
dt = dt.replace(tzinfo=tz)
if dt.tzinfo is not UTC:
dt = dt.astimezone(UTC)
return dt.strftime(tformat)
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