mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-09 00:00:00 +01:00
0735eb0f89
And various other cleanups and harmonizations Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
110 lines
2.9 KiB
Python
110 lines
2.9 KiB
Python
# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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# SPDX-License-Identifier: Apache-2.0
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import re
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from datetime import datetime
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from functools import total_ordering
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@total_ordering
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class Timestamp:
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"""Parsing the VILLASnode human-readable timestamp format"""
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def __init__(self, seconds=None, nanoseconds=None,
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offset=None, sequence=None):
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self.seconds = seconds
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self.nanoseconds = nanoseconds
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self.offset = offset
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self.sequence = sequence
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@classmethod
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def now(cls, offset=None, sequence=None):
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n = datetime.utcnow()
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secs = int(n.timestamp())
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nsecs = 1000 * n.microsecond
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return Timestamp(seconds=secs, nanoseconds=nsecs,
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offset=offset, sequence=sequence)
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@classmethod
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def parse(cls, ts):
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m = re.match(r'(\d+)(?:\.(\d+))?([-+]\d+(?:\.\d+)?'
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r'(?:e[+-]?\d+)?)?(?:\((\d+)\))?', ts)
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seconds = int(m.group(1)) # Mandatory
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nanoseconds = int(m.group(2)) if m.group(2) else None
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offset = float(m.group(3)) if m.group(3) else None
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sequence = int(m.group(4)) if m.group(4) else None
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return Timestamp(seconds, nanoseconds, offset, sequence)
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def __str__(self):
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str = "%u" % (self.seconds)
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if self.nanoseconds is not None:
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str += ".%09u" % self.nanoseconds
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if self.offset is not None:
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str += "+%u" % self.offset
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if self.sequence is not None:
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str += "(%u)" % self.sequence
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return str
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def __float__(self):
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sum = float(self.seconds)
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if self.nanoseconds is not None:
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sum += self.nanoseconds * 1e-9
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if self.offset is not None:
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sum += self.offset
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return sum
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def __eq__(self, other):
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return float(self) == float(other)
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def __lt__(self, other):
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return float(self) < float(other)
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@total_ordering
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class Sample:
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"""Parsing a VILLASnode sample from a file (not a UDP package!!)"""
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def __init__(self, ts, values):
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self.ts = ts
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self.values = values
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@classmethod
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def parse(cls, line):
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csv = line.split()
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ts = Timestamp.parse(csv[0])
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vs = []
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for value in csv[1:]:
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try:
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v = float(value)
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except ValueError:
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value = value.lower()
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try:
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v = complex(value)
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except Exception:
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if value.endswith('i'):
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v = complex(value.replace('i', 'j'))
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else:
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raise ValueError()
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vs.append(v)
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return Sample(ts, vs)
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def __str__(self):
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return '%s\t%s' % (self.ts, "\t".join(map(str, self.values)))
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def __eq__(self, other):
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return self.ts == other.ts
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def __lt__(self, other):
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return self.ts < other.ts
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