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#! /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
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"]
}
# downloader functions
def _getAria2CArgs(urls, remote_path, local_path, proxies = None):
args = downloader_common_args['aria2c']
args.append("--out={0}".format(os.path.basename(local_path)))
args.append("--dir={0}".format(os.path.dirname(local_path)))
for url in urls:
args.append(url + remote_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))
return args;
def downloadFile(urls, remote_path, local_path, proxies = None):
if urls[0].startswith("http://") or urls[0].startswith("ftp://"):
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))
def queueDownload(inputFile, urls, remote_path, local_path, proxies = None):
if urls[0].startswith("http://") or urls[0].startswith("ftp://"):
for url in urls:
inputFile.write(url + remote_path + "\t")
inputFile.write("\n")
inputFile.write(" out={0}\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 = downloader_common_args['aria2c']
args.append("--input-file={0}".format(inputFileName))
ret = os.spawnvp(os.P_WAIT, "aria2c", args)
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):
""" 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
return originalRetrieveMD(self, mdtype, retrieve_can_fail)
if self.cache == 1:
return originalRetrieveMD(self, mdtype, retrieve_can_fail)
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):
return originalRetrieveMD(self, mdtype, retrieve_can_fail)
if thisdata.size and os.path.exists(local):
if os.stat(local).st_size >= int(thisdata.size):
yum.misc.unlink_f(local)
downloadFile(self.urls, remote, local, self.proxy_dict)
return originalRetrieveMD(self, mdtype, retrieve_can_fail)
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')
# 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))
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)
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