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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
#! /usr/bin/python -tt
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
# Copyright Hedayat Vatankhah, 2011.
#
# Author: Hedayat Vatankhah <hedayat.fwd@gmail.com>
#
# * Used local and presto plugins and yum's code to learn more about yum
# internals.
#
#
import os
import shutil
import yum
from yum.plugins import TYPE_CORE
from yum.yumRepo import YumRepository
from yum import Errors
from time import sleep
requires_api_version = '2.6'
plugin_type = (TYPE_CORE,)
# variables
originalRetrieveMD = YumRepository._retrieveMD
downloader_app = ''
global_cache_dir=''
downloader_common_args = {
'aria2c' : ["aria2c", "--continue", "--check-certificate=false",
"--on-download-complete=/usr/libexec/yum-fast-downloader-finalize"]
}
# downloader functions
def _getAria2CArgs(urls, remote_path, local_path, proxies = None):
args = []
args += downloader_common_args['aria2c']
args.append("--out={0}.yfd".format(os.path.basename(local_path)))
args.append("--dir={0}".format(os.path.dirname(local_path)))
args.append("--split={0}".format(max(5, len(urls))))
if proxies:
for (scheme, proxy) in proxies.items():
if not proxy.startswith('ftp://'):
args.append("--{0}-proxy={1}".format(scheme, proxy))
for url in urls:
args.append(url + remote_path)
return args;
def downloadFile(urls, remote_path, local_path, proxies = None):
if urls[0].startswith("http://") or urls[0].startswith("ftp://"):
repo_name = os.path.basename(os.path.dirname(local_path))
print "\n============================================================" \
"====================\nDownloading ({0}) {1}\n=========="\
"==================================================================="\
"===".format(repo_name, remote_path)
args = _getAria2CArgs(urls, remote_path, local_path)
ret = os.spawnvp(os.P_WAIT, downloader_app, args)
if ret:
raise yum.plugins.PluginYumExit(
"{0} exited with exit code: {1}".format(downloader_app, ret))
i=0
while not os.path.exists(local_path):
sleep(0.1)
i+=1
if i > 50:
raise yum.plugins.PluginYumExit(
"Error in downloading file: {0}".format(local_path))
def queueDownload(inputFile, urls, remote_path, local_path, proxies = None):
if urls[0].startswith("http://") or urls[0].startswith("ftp://"):
h = ""
for url in urls:
h = h + url + remote_path + "\t"
if len(h) > 4080:
break;
inputFile.write(url + remote_path + "\t")
inputFile.write("\n")
inputFile.write(" out={0}.yfd\n".format(os.path.basename(local_path)))
inputFile.write(" dir={0}\n".format(os.path.dirname(local_path)))
inputFile.write(" split={0}\n".format(max(5, len(urls))))
if proxies:
for (scheme, proxy) in proxies.items():
if not proxy.startswith('ftp://'):
inputFile.write(" {0}-proxy={1}\n".format(scheme, proxy))
def downloadQueuedFiles(inputFileName):
args = []
args += downloader_common_args['aria2c']
args.append("--input-file={0}".format(inputFileName))
ret = os.spawnvp(os.P_WAIT, "aria2c", args)
sleep(1)
if ret:
raise yum.plugins.PluginYumExit(
"{0} exited with exit code: {1}".format(downloader_app, ret))
# Hooks!
# Written looking at yum's _retrieveMD implementation. Most parts have
# beed directly grabbed from that.
def myRetrieveMD(self, mdtype, retrieve_can_fail=False, **kwargs):
""" replace's yum's default _retrieveMD function to use a downloader """
# calls original function on return to make sure that everything is OK
thisdata = self.repoXML.getData(mdtype)
(r_base, remote) = thisdata.location
fname = os.path.basename(remote)
local = self.cachedir + '/' + fname
if self.retrieved.get(mdtype):
# got it, move along #maybe "local"
return originalRetrieveMD(self, mdtype, retrieve_can_fail, **kwargs)
if self.cache == 1:
if os.path.exists(local):
try:
self.checkMD(local, mdtype)
except URLGrabError, e:
raise Errors.RepoError, \
"Caching enabled and local cache: %s does not match checksum" % local
else:
return originalRetrieveMD(self, mdtype, retrieve_can_fail, **kwargs)
else: # ain't there - raise
raise Errors.RepoError, \
"Caching enabled but no local cache of %s from %s" % (local,
self)
if (os.path.exists(local) or
self._preload_md_from_system_cache(os.path.basename(local))):
if self._checkMD(local, mdtype, check_can_fail=True):
self.retrieved[mdtype] = 1
# it's the same return the local one
return originalRetrieveMD(self, mdtype, retrieve_can_fail, **kwargs)
try:
def checkfunc(obj):
self.checkMD(obj, mdtype)
self.retrieved[mdtype] = 1
text = "%s/%s" % (self.id, mdtype)
if thisdata.size is None:
reget = None
else:
reget = 'simple'
if os.path.exists(local):
if os.stat(local).st_size >= int(thisdata.size):
misc.unlink_f(local)
downloadFile(self.urls, remote, local, self.proxy_dict)
# local = self._getFile(relative=remote,
# local=local,
# copy_local=1,
# reget=reget,
# checkfunc=checkfunc,
# text=text,
# cache=self.http_caching == 'all',
# size=thisdata.size,
# **kwargs)
except Errors.RepoError:
if retrieve_can_fail:
return None
raise
except URLGrabError, e:
if retrieve_can_fail:
return None
raise Errors.RepoError, \
"Could not retrieve %s matching remote checksum from %s" % (local, self)
else:
return originalRetrieveMD(self, mdtype, retrieve_can_fail, **kwargs)
def postconfig_hook(conduit):
global downloader_app
global global_cache_dir
global downloader_common_args
downloader_app = conduit.confString('main', 'downloader', default='aria2c')
global_cache_dir = conduit.getConf().cachedir
max_concurrent_downloads = conduit.confString('main',
'max-concurrent-downloads', default='10')
min_split_size = conduit.confString('main',
'min_split_size', default='1M')
max_connection_per_server = conduit.confString('main',
'max_connection_per_server', default='5')
# append aria2c options
downloader_common_args['aria2c'].append(
"--server-stat-if={0}/aria2c_server_stats".format(global_cache_dir))
downloader_common_args['aria2c'].append(
"--server-stat-of={0}/aria2c_server_stats".format(global_cache_dir))
downloader_common_args['aria2c'].append(
"--max-concurrent-downloads={0}".format(max_concurrent_downloads))
downloader_common_args['aria2c'].append(
"--min-split-size={0}".format(min_split_size))
downloader_common_args['aria2c'].append(
"--max-connection-per-server={0}".format(max_connection_per_server))
def prereposetup_hook(conduit):
ret_insmethod = type(YumRepository._retrieveMD)
YumRepository._retrieveMD = ret_insmethod(myRetrieveMD, None, YumRepository)
# repos = conduit.getRepos()
# for repo in repos.listEnabled():
# print "name: %s" % repo.name
# print "URLS: %s" % repo.urls
# repo._retrieveMD = testRetrieveMD
def predownload_hook(conduit):
# it is also called on remove!
if not conduit.getDownloadPackages():
return
inputFileName = "{0}/aria.input".format(global_cache_dir)
ariaInputFile = open(inputFileName, "w")
for pkg in conduit.getDownloadPackages():
local = pkg.localPkg()
if os.path.exists(local):
if pkg.verifyLocalPkg():
conduit.info(5, "Already have package for %s.%s."
% (pkg.name, pkg.arch))
continue
# download_dir = os.path.join(pkg.repo.cachedir, 'alternative_downloader_cache')
# conduit.info(2, "Getting: {0} into {1}".format(pkg.remote_url, local))
# downloadFile(pkg.repo.urls, pkg.remote_path, local, pkg.repo.proxy_dict)
queueDownload(ariaInputFile, pkg.repo.urls, pkg.remote_path,
local, pkg.repo.proxy_dict)
ariaInputFile.close()
downloadQueuedFiles(inputFileName)
os.unlink(inputFileName)
|
