mirror of
https://git.friendi.ca/friendica/friendica-addons.git
synced 2024-11-22 23:23:45 +00:00
140 lines
3.9 KiB
Python
Executable file
140 lines
3.9 KiB
Python
Executable file
#!/usr/bin/env python
|
|
|
|
#
|
|
# Copyright (c) 2009-2010 Evert Pot
|
|
# All rights reserved.
|
|
# http://www.rooftopsolutions.nl/
|
|
#
|
|
# This utility is distributed along with SabreDAV
|
|
# license: http://code.google.com/p/sabredav/wiki/License Modified BSD License
|
|
|
|
import os
|
|
from optparse import OptionParser
|
|
import time
|
|
|
|
def getfreespace(path):
|
|
stat = os.statvfs(path)
|
|
return stat.f_frsize * stat.f_bavail
|
|
|
|
def getbytesleft(path,treshold):
|
|
return getfreespace(path)-treshold
|
|
|
|
def run(cacheDir, treshold, sleep=5, simulate=False, min_erase = 0):
|
|
|
|
bytes = getbytesleft(cacheDir,treshold)
|
|
if (bytes>0):
|
|
print "Bytes to go before we hit treshhold:", bytes
|
|
else:
|
|
print "Treshold exceeded with:", -bytes, "bytes"
|
|
dir = os.listdir(cacheDir)
|
|
dir2 = []
|
|
for file in dir:
|
|
path = cacheDir + '/' + file
|
|
dir2.append({
|
|
"path" : path,
|
|
"atime": os.stat(path).st_atime,
|
|
"size" : os.stat(path).st_size
|
|
})
|
|
|
|
dir2.sort(lambda x,y: int(x["atime"]-y["atime"]))
|
|
|
|
filesunlinked = 0
|
|
gainedspace = 0
|
|
|
|
# Left is the amount of bytes that need to be freed up
|
|
# The default is the 'min_erase setting'
|
|
left = min_erase
|
|
|
|
# If the min_erase setting is lower than the amount of bytes over
|
|
# the treshold, we use that number instead.
|
|
if left < -bytes :
|
|
left = -bytes
|
|
|
|
print "Need to delete at least:", left;
|
|
|
|
for file in dir2:
|
|
|
|
# Only deleting files if we're not simulating
|
|
if not simulate: os.unlink(file["path"])
|
|
left = int(left - file["size"])
|
|
gainedspace = gainedspace + file["size"]
|
|
filesunlinked = filesunlinked + 1
|
|
|
|
if(left<0):
|
|
break
|
|
|
|
print "%d files deleted (%d bytes)" % (filesunlinked, gainedspace)
|
|
|
|
|
|
time.sleep(sleep)
|
|
|
|
|
|
|
|
def main():
|
|
parser = OptionParser(
|
|
version="naturalselecton v0.3",
|
|
description="Cache directory manager. Deletes cache entries based on accesstime and free space tresholds.\n" +
|
|
"This utility is distributed alongside SabreDAV.",
|
|
usage="usage: %prog [options] cacheDirectory",
|
|
)
|
|
parser.add_option(
|
|
'-s',
|
|
dest="simulate",
|
|
action="store_true",
|
|
help="Don't actually make changes, but just simulate the behaviour",
|
|
)
|
|
parser.add_option(
|
|
'-r','--runs',
|
|
help="How many times to check before exiting. -1 is infinite, which is the default",
|
|
type="int",
|
|
dest="runs",
|
|
default=-1
|
|
)
|
|
parser.add_option(
|
|
'-n','--interval',
|
|
help="Sleep time in seconds (default = 5)",
|
|
type="int",
|
|
dest="sleep",
|
|
default=5
|
|
)
|
|
parser.add_option(
|
|
'-l','--treshold',
|
|
help="Treshhold in bytes (default = 10737418240, which is 10GB)",
|
|
type="int",
|
|
dest="treshold",
|
|
default=10737418240
|
|
)
|
|
parser.add_option(
|
|
'-m', '--min-erase',
|
|
help="Minimum number of bytes to erase when the treshold is reached. " +
|
|
"Setting this option higher will reduce the amount of times the cache directory will need to be scanned. " +
|
|
"(the default is 1073741824, which is 1GB.)",
|
|
type="int",
|
|
dest="min_erase",
|
|
default=1073741824
|
|
)
|
|
|
|
options,args = parser.parse_args()
|
|
if len(args)<1:
|
|
parser.error("This utility requires at least 1 argument")
|
|
cacheDir = args[0]
|
|
|
|
print "Natural Selection"
|
|
print "Cache directory:", cacheDir
|
|
free = getfreespace(cacheDir);
|
|
print "Current free disk space:", free
|
|
|
|
runs = options.runs;
|
|
while runs!=0 :
|
|
run(
|
|
cacheDir,
|
|
sleep=options.sleep,
|
|
simulate=options.simulate,
|
|
treshold=options.treshold,
|
|
min_erase=options.min_erase
|
|
)
|
|
if runs>0:
|
|
runs = runs - 1
|
|
|
|
if __name__ == '__main__' :
|
|
main()
|