1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
# vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=python:textwidth=0:
# License: GPL2 or later see COPYING
# Written by Michael Brown
# Copyright (C) 2007 Michael E Brown <mebrown@michaels-house.net>
# python library imports
import fcntl
import time
import os
# our imports
from mock.trace_decorator import decorate, traceLog, getLog
import mock.util
# set up logging, module options
requires_api_version = "1.0"
# plugin entry point
decorate(traceLog())
def init(rootObj, conf):
YumCache(rootObj, conf)
# classes
class YumCache(object):
"""caches root environment in a tarball"""
decorate(traceLog())
def __init__(self, rootObj, conf):
self.rootObj = rootObj
self.yum_cache_opts = conf
self.yumSharedCachePath = self.yum_cache_opts['dir'] % self.yum_cache_opts
self.state = rootObj.state
self.online = rootObj.online
rootObj.yum_cacheObj = self
rootObj.addHook("preyum", self._yumCachePreYumHook)
rootObj.addHook("postyum", self._yumCachePostYumHook)
rootObj.addHook("preinit", self._yumCachePreInitHook)
rootObj.umountCmds.append('umount -n %s' % rootObj.makeChrootPath('/var/cache/yum'))
rootObj.mountCmds.append('mount -n --bind %s %s' % (self.yumSharedCachePath, rootObj.makeChrootPath('/var/cache/yum')))
mock.util.mkdirIfAbsent(self.yumSharedCachePath)
self.yumCacheLock = open(os.path.join(self.yumSharedCachePath, "yumcache.lock"), "a+")
# =============
# 'Private' API
# =============
# lock the shared yum cache (when enabled) before any access
# by yum, and prior to cleaning it. This prevents simultaneous access from
# screwing things up. This can possibly happen, eg. when running multiple
# mock instances with --uniqueext=
decorate(traceLog())
def _yumCachePreYumHook(self):
try:
fcntl.lockf(self.yumCacheLock.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError, e:
oldState = self.state()
self.state("Waiting for yumcache lock")
fcntl.lockf(self.yumCacheLock.fileno(), fcntl.LOCK_EX)
self.state(oldState)
decorate(traceLog())
def _yumCachePostYumHook(self):
fcntl.lockf(self.yumCacheLock.fileno(), fcntl.LOCK_UN)
decorate(traceLog())
def _yumCachePreInitHook(self):
getLog().info("enabled yum cache")
mock.util.mkdirIfAbsent(self.rootObj.makeChrootPath('/var/cache/yum'))
# lock so others dont accidentally use yum cache while we operate on it.
self._yumCachePreYumHook()
if self.online:
self.state("cleaning yum metadata")
for (dirpath, dirnames, filenames) in os.walk(self.yumSharedCachePath):
for filename in filenames:
fullPath = os.path.join(dirpath, filename)
statinfo = os.stat(fullPath)
file_age_days = (time.time() - statinfo.st_ctime) / (60 * 60 * 24)
# prune repodata so yum redownloads.
# prevents certain errors where yum gets stuck due to bad metadata
for ext in (".sqllite", ".xml", ".bz2", ".gz"):
if filename.endswith(ext) and file_age_days > self.yum_cache_opts['max_metadata_age_days']:
os.unlink(fullPath)
fullPath = None
break
if fullPath is None: continue
if file_age_days > self.yum_cache_opts['max_age_days']:
os.unlink(fullPath)
continue
self._yumCachePostYumHook()
|
