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"""
Builds out and synchronizes yum repo mirrors.
Initial support for rsync, perhaps reposync coming later.
Copyright 2006-2007, Red Hat, Inc
Michael DeHaan <mdehaan@redhat.com>
This software may be freely redistributed under the terms of the GNU
general public license.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
import os
import os.path
import time
import yaml # Howell-Clark version
import sub_process
import sys
import utils
from cexceptions import *
import traceback
import errno
from rhpl.translate import _, N_, textdomain, utf8
class RepoSync:
"""
Handles conversion of internal state to the tftpboot tree layout
"""
# ==================================================================================
def __init__(self,config):
"""
Constructor
"""
self.verbose = True
self.config = config
self.distros = config.distros()
self.profiles = config.profiles()
self.systems = config.systems()
self.settings = config.settings()
self.repos = config.repos()
# ===================================================================
def run(self, args=[], verbose=True):
"""
Syncs the current repo configuration file with the filesystem.
"""
self.verbose = verbose
for repo in self.repos:
if args != [] and repo.name not in args:
continue
elif args == [] and not repo.keep_updated:
print _("- %s is set to not be updated") % repo.name
continue
repo_path = os.path.join(self.settings.webdir, "repo_mirror", repo.name)
mirror = repo.mirror
if not os.path.isdir(repo_path) and not repo.mirror.lower().startswith("rhn://"):
os.makedirs(repo_path)
if repo.is_rsync_mirror():
self.do_rsync(repo)
else:
self.do_reposync(repo)
return True
# ==================================================================
def do_reposync(self,repo):
"""
Handle copying of http:// and ftp:// repos.
"""
# warn about not having yum-utils. We don't want to require it in the package because
# RHEL4 and RHEL5U0 don't have it.
if not os.path.exists("/usr/bin/reposync"):
raise CX(_("no /usr/bin/reposync found, please install yum-utils"))
cmds = [] # queues up commands to run
is_rhn = False # RHN repositories require extra black magic
has_rpm_list = False # flag indicating not to pull the whole repo
# detect cases that require special handling
if repo.mirror.lower().startswith("rhn://"):
is_rhn = True
if repo.rpm_list != "":
has_rpm_list = True
# create yum config file for use by reposync
store_path = os.path.join(self.settings.webdir, "repo_mirror")
dest_path = os.path.join(store_path, repo.name)
temp_path = os.path.join(store_path, ".origin")
if not os.path.isdir(temp_path):
# FIXME: there's a chance this might break the RHN D/L case
os.makedirs(temp_path)
# how we invoke yum-utils depends on whether this is RHN content or not.
if not is_rhn:
# this is the simple non-RHN case.
# create the config file that yum will use for the copying
temp_file = self.create_local_file(repo, temp_path, output=False)
if not has_rpm_list:
# if we have not requested only certain RPMs, use reposync
cmd = "/usr/bin/reposync --config=%s --repoid=%s --download_path=%s" % (temp_file, repo.name, store_path)
print _("- %s") % cmd
cmds.append(cmd)
else:
# create the output directory if it doesn't exist
if not os.path.exists(dest_path):
os.makedirs(dest_path)
# older yumdownloader sometimes explodes on --resolvedeps
# if this happens to you, upgrade yum & yum-utils
cmd = "/usr/bin/yumdownloader --resolve -c %s --destdir=%s %s" %(temp_file, dest_path, " ".join(repo.rpm_list))
print _("- %s") % cmd
cmds.append(cmd)
else:
# this is the somewhat more-complex RHN case.
# NOTE: this requires that you have entitlements for the server and you give the mirror as rhn://$channelname
if has_rpm_list:
print _("- warning: --rpm-list is not supported for RHN content")
rest = repo.mirror[6:] # everything after rhn://
cmd = "/usr/bin/reposync -r %s --download_path=%s" % (rest, store_path)
print _("- %s") % cmd
cmds.append(cmd)
# downloads using -r use the value given for -r as part of the output dir,
# so create a symlink with the name the user
# gave such that everything still works as intended and the sync code still works
# this doesn't happen for the http:// and ftp:// mirrors.
if not os.path.exists(dest_path):
from1 = os.path.join(self.settings.webdir, "repo_mirror", rest)
print _("- symlink: %(from)s -> %(to)s") % { "from" : from1, "to" : dest_path }
os.symlink(from1, dest_path)
# now regardless of whether we're doing yumdownloader or reposync
# or whether the repo was http://, ftp://, or rhn://, execute all queued
# commands here. Any failure at any point stops the operation.
for cmd in cmds:
rc = sub_process.call(cmd, shell=True)
if rc !=0:
raise CX(_("cobbler reposync failed"))
# some more special case handling for RHN.
# create the config file now, because the directory didn't exist earlier
if is_rhn:
temp_file = self.create_local_file(repo, temp_path, output=False)
# now run createrepo to rebuild the index
os.path.walk(dest_path, self.createrepo_walker, repo)
# create the config file the hosts will use to access the repository.
self.create_local_file(repo, dest_path)
# ==================================================================================
def do_rsync(self,repo):
"""
Handle copying of rsync:// and rsync-over-ssh repos.
"""
if repo.rpm_list != "":
print _("- warning: --rpm-list is not supported for rsync'd repositories")
dest_path = os.path.join(self.settings.webdir, "repo_mirror", repo.name)
spacer = ""
if not repo.mirror.startswith("rsync://") and not repo.mirror.startswith("/"):
spacer = "-e ssh"
if not repo.mirror.endswith("/"):
repo.mirror = "%s/" % repo.mirror
cmd = "rsync -av %s --delete --delete-excluded --exclude-from=/etc/cobbler/rsync.exclude %s %s" % (spacer, repo.mirror, dest_path)
print _("- %s") % cmd
rc = sub_process.call(cmd, shell=True)
if rc !=0:
raise CX(_("cobbler reposync failed"))
print _("- walking: %s") % dest_path
os.path.walk(dest_path, self.createrepo_walker, repo)
self.create_local_file(repo, dest_path)
# ==================================================================================
def create_local_file(self, repo, dest_path, output=True):
"""
Two uses:
(A) Create local files that can be used with yum on provisioned clients to make use of thisi mirror.
(B) Create a temporary file for yum to feed into reposync
"""
if output:
fname = os.path.join(dest_path,"config.repo")
else:
fname = os.path.join(dest_path, "%s.repo" % repo.name)
print _("- creating: %s") % fname
config_file = open(fname, "w+")
config_file.write("[%s]\n" % repo.name)
config_file.write("name=%s\n" % repo.name)
if output:
config_file.write("baseurl=http://%s/cobbler/repo_mirror/%s\n" % (self.settings.server, repo.name))
else:
config_file.write("baseurl=%s\n" % repo.mirror)
config_file.write("enabled=1\n")
config_file.write("gpgcheck=0\n")
config_file.close()
return fname
# ==================================================================================
def createrepo_walker(self, repo, dirname, fnames):
"""
Used to run createrepo on a copied mirror.
"""
if os.path.exists(os.path.join(dirname,"RPMS")) or not repo.is_rsync_mirror():
utils.remove_yum_olddata(dirname)
try:
cmd = "createrepo %s %s" % (repo.createrepo_flags, dirname)
print _("- %s") % cmd
sub_process.call(cmd, shell=True)
except:
print _("- createrepo failed. Is it installed?")
del fnames[:] # we're in the right place
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