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# Copyright 2017 - 2020 Avram Lubkin, All Rights Reserved
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""
Multiple progress bars example
"""
from contextlib import contextmanager
import logging
import platform
import random
import time
import enlighten
logging.basicConfig(level=logging.INFO)
LOGGER = logging.getLogger('enlighten')
DATACENTERS = 5
SYSTEMS = (5, 10) # Range
FILES = (10, 100) # Range
@contextmanager
def win_time_granularity(milliseconds):
"""
time.sleep() on Windows may not have high precision with older versions of Python
This will temporarily change the timing resolution
# https://docs.microsoft.com/en-us/windows/desktop/api/timeapi/nf-timeapi-timebeginperiod
"""
from ctypes import windll # pylint: disable=import-outside-toplevel
try:
windll.winmm.timeBeginPeriod(milliseconds)
yield
finally:
windll.winmm.timeEndPeriod(milliseconds)
def process_files(manager):
"""
Process a random number of files on a random number of systems across multiple data centers
"""
# Get a top level progress bar
enterprise = manager.counter(total=DATACENTERS, desc='Processing:', unit='datacenters')
# Iterate through data centers
for d_num in range(1, DATACENTERS + 1):
systems = random.randint(*SYSTEMS) # Random number of systems
# Get a child progress bar. leave is False so it can be replaced
datacenter = manager.counter(total=systems, desc=' Datacenter %d:' % d_num,
unit='systems', leave=False)
# Iterate through systems
for s_num in range(1, systems + 1):
# Has no total, so will act as counter. Leave is False
system = manager.counter(desc=' System %d:' % s_num, unit='files', leave=False)
files = random.randint(*FILES) # Random file count
# Iterate through files
for _ in range(files):
system.update() # Update count
time.sleep(random.uniform(0.001, 0.005)) # Random processing time
system.close() # Close counter so it gets removed
# Log status
LOGGER.info('Updated %d files on System %d in Datacenter %d', files, s_num, d_num)
datacenter.update() # Update count
datacenter.close() # Close counter so it gets removed
enterprise.update() # Update count
enterprise.close() # Close counter, won't be removed but does a refresh
def main():
"""
Main function
"""
with enlighten.get_manager() as manager:
process_files(manager)
if __name__ == '__main__':
if platform.system() == 'Windows':
with win_time_granularity(1):
main()
else:
main()
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