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python: create timestamps using datetime.utcnow()

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Steffen Vogel 2020-06-07 18:13:29 +01:00 • committed by Steffen Vogel
parent 45d5f9b262
commit 97709ae84e
1 changed files with 11 additions and 1 deletions
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12
python/villas/node/sample.py
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@ -1,14 +1,24 @@
import re import re
from datetime import datetime
class Timestamp: class Timestamp:
"""Parsing the VILLASnode human-readable timestamp format""" """Parsing the VILLASnode human-readable timestamp format"""
def __init__(self, seconds = 0, nanoseconds = None, offset = None, sequence = None): def __init__(self, seconds=None, nanoseconds=None, offset=None, sequence=None):
self.seconds = seconds self.seconds = seconds
self.nanoseconds = nanoseconds self.nanoseconds = nanoseconds
self.offset = offset self.offset = offset
self.sequence = sequence self.sequence = sequence
@classmethod
def now(self, offset=None, sequence=None):
n = datetime.utcnow()
secs = int(n.timestamp())
nsecs = 1000 * n.microsecond
return Timestamp(seconds=secs, nanoseconds=nsecs, offset=offset, sequence=sequence)
@classmethod @classmethod
def parse(self, ts): def parse(self, ts):
m = re.match('(\d+)(?:\.(\d+))?([-+]\d+(?:\.\d+)?(?:e[+-]?\d+)?)?(?:\((\d+)\))?', ts) m = re.match('(\d+)(?:\.(\d+))?([-+]\d+(?:\.\d+)?(?:e[+-]?\d+)?)?(?:\((\d+)\))?', ts)