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# Copyright 2019 - 2022 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/.
"""
Multicolored progress bar example
"""
import logging
import random
import time
import enlighten
logging.basicConfig(level=logging.INFO)
LOGGER = logging.getLogger("enlighten")
BAR_FMT = u'{desc}{desc_pad}{percentage_2:3.0f}%|{bar}| {count_2:{len_total}d}/{total:d} ' + \
u'[{elapsed}<{eta_2}, {rate_2:.2f}{unit_pad}{unit}/s]'
class Node(object):
"""
Simulated service node
"""
def __init__(self, iden):
self.iden = iden
self._connected = None
self._loaded = None
def connect(self):
"""
Connect to node
"""
self._connected = False
def load(self):
"""
Load service
"""
self._loaded = False
@property
def connected(self):
"""
Connected state
"""
return self._state('_connected', 3)
@property
def loaded(self):
"""
Loaded state
"""
return self._state('_loaded', 5)
def _state(self, variable, num):
"""
Generic method to randomly determine if state is reached
"""
value = getattr(self, variable)
if value is None:
return False
if value is True:
return True
if random.randint(1, num) == num:
setattr(self, variable, True)
return True
return False
def run_tests(manager, tests=100):
"""
Simulate a test program
Tests will error (yellow), fail (red), or succeed (green)
"""
terminal = manager.term
bar_format = u'{desc}{desc_pad}{percentage:3.0f}%|{bar}| ' + \
u'S:' + terminal.green3(u'{count_0:{len_total}d}') + u' ' + \
u'F:' + terminal.red2(u'{count_2:{len_total}d}') + u' ' + \
u'E:' + terminal.yellow2(u'{count_1:{len_total}d}') + u' ' + \
u'[{elapsed}<{eta}, {rate:.2f}{unit_pad}{unit}/s]'
with manager.counter(total=tests, desc='Testing', unit='tests', color='green3',
bar_format=bar_format) as success:
errors = success.add_subcounter('yellow2')
failures = success.add_subcounter('red2')
for num in range(tests):
time.sleep(random.uniform(0.1, 0.3)) # Random processing time
result = random.randint(0, 10)
if result == 7:
LOGGER.error("Test %d did not complete", num)
errors.update()
elif result in {5, 6}:
LOGGER.error("Test %d failed", num)
failures.update()
else:
LOGGER.info("Test %d passed", num)
success.update()
def load(manager, units=80):
"""
Simulate loading services from a remote node
States are connecting (red), loading (yellow), and loaded (green)
"""
pb_connecting = manager.counter(total=units, desc='Loading', unit='services',
color='red2', bar_format=BAR_FMT)
pb_loading = pb_connecting.add_subcounter('yellow2')
pb_loaded = pb_connecting.add_subcounter('green3', all_fields=True)
connecting = []
loading = []
loaded = []
count = 0
while pb_loaded.count < units:
time.sleep(random.uniform(0.05, 0.15)) # Random processing time
for idx, node in enumerate(loading):
if node.loaded:
loading.pop(idx)
loaded.append(node)
LOGGER.info('Service %d loaded', node.iden)
pb_loaded.update_from(pb_loading)
for idx, node in enumerate(connecting):
if node.connected:
connecting.pop(idx)
node.load()
loading.append(node)
LOGGER.info('Service %d connected', node.iden)
pb_loading.update_from(pb_connecting)
# Connect to up to 5 units at a time
for _ in range(min(units - count, 5 - len(connecting))):
node = Node(count)
node.connect()
connecting.append(node)
LOGGER.info('Connection to service %d', node.iden)
pb_connecting.update()
count += 1
def main():
"""
Main function
"""
manager = enlighten.get_manager()
run_tests(manager, 100)
load(manager, 80)
if __name__ == "__main__":
main()
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