FM / lib

/usr/lib/python3/dist-packages/landscape/lib/

/usr/lib/python3/dist-packages/landscape/lib

Name	Size	Mode	Actions
apt/	-	0755	rm
__pycache__/	-	0755	rm
amp.py	21745	0644	edit dl rm
backoff.py	1683	0644	edit dl rm
base64.py	196	0644	edit dl rm
bootstrap.py	1416	0644	edit dl rm
bpickle.py	6471	0644	edit dl rm
cli.py	440	0644	edit dl rm
cloud.py	1715	0644	edit dl rm
compat.py	616	0644	edit dl rm
config.py	12484	0644	edit dl rm
disk.py	5027	0644	edit dl rm
encoding.py	545	0644	edit dl rm
fd.py	751	0644	edit dl rm
fetch.py	6647	0644	edit dl rm
format.py	959	0644	edit dl rm
fs.py	3889	0644	edit dl rm
gpg.py	1796	0644	edit dl rm
hashlib.py	264	0644	edit dl rm
jiffies.py	1621	0644	edit dl rm
juju.py	860	0644	edit dl rm
lock.py	705	0644	edit dl rm
log.py	484	0644	edit dl rm
logging.py	2528	0644	edit dl rm
message.py	2638	0644	edit dl rm
monitor.py	6281	0644	edit dl rm
network.py	9821	0644	edit dl rm
os_release.py	1324	0644	edit dl rm
persist.py	20995	0644	edit dl rm
plugin.py	1787	0644	edit dl rm
process.py	6603	0644	edit dl rm
reactor.py	8812	0644	edit dl rm
schema.py	6457	0644	edit dl rm
scriptcontent.py	522	0644	edit dl rm
sequenceranges.py	5724	0644	edit dl rm
store.py	1408	0644	edit dl rm
sysstats.py	7920	0644	edit dl rm
tag.py	506	0644	edit dl rm
testing.py	24662	0644	edit dl rm
timestamp.py	233	0644	edit dl rm
twisted_util.py	4476	0644	edit dl rm
user.py	1476	0644	edit dl rm
versioning.py	1265	0644	edit dl rm
vm_info.py	3172	0644	edit dl rm
warning.py	394	0644	edit dl rm
__init__.py	198	0644	edit dl rm

Edit: /usr/lib/python3/dist-packages/landscape/lib/backoff.py (1683B)

import random

class ExponentialBackoff:
    """
    Keeps track of a backoff delay that staggers down and staggers up
    exponentially.
    """

def __init__(self, start_delay, max_delay):

self._error_count = 0  # A tally of server errors

self._start_delay = start_delay
        self._max_delay = max_delay

def decrease(self):
        """Decreases error count with zero being the lowest"""
        self._error_count -= 1
        self._error_count = max(self._error_count, 0)

def increase(self):
        """Increases error count but not higher than gives the max delay"""
        if self.get_delay() < self._max_delay:
            self._error_count += 1

def get_delay(self):
        """
        Calculates the delay using formula that gives this chart. In this
        specific example start is 5 seconds and max is 60 seconds
                Count  Delay
                0      0
                1      5
                2      10
                3      20
                4      40
                5      60 (max)
        """
        if self._error_count:
            delay = (2 ** (self._error_count - 1)) * self._start_delay
        else:
            delay = 0
        return min(int(delay), self._max_delay)

def get_random_delay(self, stagger_fraction=0.25):
        """
        Adds randomness to the specified stagger of the delay. For example
        for a delay of 12 and 25% stagger, it works out to 9 + rand(0,3)
        """
        delay = self.get_delay()
        non_random_part = delay * (1-stagger_fraction)
        random_part = delay * stagger_fraction * random.random()
        return int(non_random_part + random_part)

import random class ExponentialBackoff: """ Keeps track of a backoff delay that staggers down and staggers up exponentially. """ def __init__(self, start_delay, max_delay): self._error_count = 0 # A tally of server errors self._start_delay = start_delay self._max_delay = max_delay def decrease(self): """Decreases error count with zero being the lowest""" self._error_count -= 1 self._error_count = max(self._error_count, 0) def increase(self): """Increases error count but not higher than gives the max delay""" if self.get_delay() < self._max_delay: self._error_count += 1 def get_delay(self): """ Calculates the delay using formula that gives this chart. In this specific example start is 5 seconds and max is 60 seconds Count Delay 0 0 1 5 2 10 3 20 4 40 5 60 (max) """ if self._error_count: delay = (2 ** (self._error_count - 1)) * self._start_delay else: delay = 0 return min(int(delay), self._max_delay) def get_random_delay(self, stagger_fraction=0.25): """ Adds randomness to the specified stagger of the delay. For example for a delay of 12 and 25% stagger, it works out to 9 + rand(0,3) """ delay = self.get_delay() non_random_part = delay * (1-stagger_fraction) random_part = delay * stagger_fraction * random.random() return int(non_random_part + random_part)