mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
0735eb0f89
And various other cleanups and harmonizations Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
86 lines
1.8 KiB
Python
86 lines
1.8 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 time
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import logging
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import sys
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import linuxfd
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from villas.node.sample import Sample, Timestamp
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from threading import Thread
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logger = logging.getLogger(__name__)
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class RecvThread(Thread):
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def __init__(self, cb):
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super().__init__()
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self.cb = cb
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self.daemon = True
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def run(self):
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for line in sys.stdin:
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if line.startswith('#'):
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continue
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logger.debug("RecvThread: {}".format(line))
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sample = Sample.parse(line)
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self.cb(sample.values)
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class SendThread(Thread):
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def __init__(self, cb, rate=None):
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super().__init__()
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self.cb = cb
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self.rate = rate
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self.daemon = True
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self.sequence = 0
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def run(self):
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if self.rate:
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tfd = linuxfd.timerfd()
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tfd.settime(1.0, 1.0 / self.rate)
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else:
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tfd = None
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while True:
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if tfd:
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tfd.read()
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values = self.cb()
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ts = Timestamp.now(None, self.sequence)
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sample = Sample(ts, values)
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sys.stdout.write(str(sample) + '\n')
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sys.stdout.flush()
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self.sequence += 1
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def communicate(rate, recv_cb=None, send_cb=None, wait=True):
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if recv_cb:
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rt = RecvThread(recv_cb)
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rt.start()
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if send_cb:
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st = SendThread(send_cb, rate)
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st.start()
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if wait:
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try:
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while True:
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time.sleep(1)
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except KeyboardInterrupt:
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logger.info('Received Ctrl+C. Stopping send/recv threads')
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# Threads are daemon threads
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# and therefore killed with program termination
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