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# debpartial_mirror - partial debian mirror package tool
# (c) 2004 Otavio Salvador <otavio@debian.org>, Marco Presi <zufus@debian.org>
#
# 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 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
import os
import sys
import apt_pkg
from cdd import FileSystem
from debpartial_mirror import Download
class Pool:
"""
This class provides methods to manage pool dirs into the
partial-mirror.
"""
def __init__(self, backend):
self._backend = backend
self._got_files = []
self._containsForeignPackages = False
self._filesystem = FileSystem.FileSystem(
backend["mirror_dir"],
backend["name"]
)
def _process_package(self, pkg):
"""
This method is called for each package and should be override
in each child class.
"""
raise NotImplemented
def _calc_need_files(self):
"""
This method is called to build the list of need files to
permit to us to clean up the mirror. If you need to handle in
a special way to calc it, you're free to override this method.
"""
if not len(self._got_files):
self._backend.process()
need_files = []
for architecture in self._backend["architectures"]:
need_files.extend([pkg['Filename'] for pkg in self._backend.get_binary_list(architecture).values()])
else:
need_files = self._got_files
return need_files
def _link_internal(self, pkg, mirror):
filename = pkg['Filename']
self._filesystem.mkdir(os.path.dirname(filename))
src = self._backend["mirror_dir"] + "/" + mirror["name"] + "/" + filename
dst = os.path.join(self._filesystem.base(), filename)
if not os.path.exists(dst):
try:
print "Linking [%s] %s" % (mirror["name"], filename)
os.link (src, dst)
except OSError, msg:
print "Error while linking a file:"
print " [%s] %s" % (mirror["name"], filename)
print " System message: %s" % msg
sys.exit(1) #TODO: fixme
self._got_files.append(filename)
def upgrade(self):
"""
Manage the pool upgrade process
TODO: Handle source packages.
"""
def processPackage(pkg, architecture):
foundList = self._backend.get_binary_list(architecture).whereis(pkg["Package"])
if foundList in (self._backend.get_binary_list(architecture), self._backend.get_full_binary_list(architecture)):
self._process_package(pkg)
else: # required dependency from another mirror
for backend in self._backend.backends:
if backend.get_full_binary_list(architecture) == foundList:
break
else:
raise RuntimeError("No backend found for %s", pkg["Package"])
self._link_internal(pkg, backend)
self._containsForeignPackages = True
for architecture in self._backend["architectures"]:
for pkg in self._backend.get_binary_list(architecture).values():
filename = pkg['Filename']
if not self._filesystem.exists(filename):
processPackage(pkg, architecture)
elif self._filesystem.md5sum(filename) == pkg['MD5sum']:
self._got_files.append(filename)
else:
print 'Removing corrupted package', pkg['Package']
self._filesystem.remove(filename)
processPackage(pkg, architecture)
def clean (self):
"""
Clean old files
"""
need_files = self._calc_need_files()
# Walk in all debian related files of mirror
for current in self._filesystem.match("^.+\.(dsc|(diff|tar)\.gz|deb|udeb)$"):
if current not in need_files:
print "Removing unneeded file: %s" % current
self._filesystem.remove(current)
try:
self._filesystem.rmdir(os.path.dirname(current), True)
except OSError:
pass
def containsForeignPackages(self):
return self._containsForeignPackages
class RemotePool (Pool):
"""
This class provides methods to fill pool dir downloading remote files
"""
def __init__ (self, backend):
Pool.__init__(self, backend) # Call parent constructor
self.download = Download.Download(name = "Pool_" + backend["name"]) # Our Download manager
def _process_package (self, pkg):
self._filesystem.mkdir(os.path.dirname(pkg['Filename']))
self.download.get(
os.path.join(self._backend["server"], pkg['Filename']),
os.path.join(self._filesystem.base(), pkg['Filename'])
)
self._got_files.append(pkg['Filename'])
def upgrade (self):
Pool.upgrade(self) # Call parent method
self.download.wait_mine() # Wait until our downloads finish
class LocalPool (Pool):
"""
This class provides methods to fill pool dir linking from local files
"""
def _process_package (self):
self._filesystem.mkdir(os.path.dirname(pkg['Filename']))
os.link(
self._backend["server"].split('file://')[1] + pkg,
self._local + pkg
)
self._got_files.append(pkg['Filename'])
class MergePool (Pool):
"""
This class provides methods to fill pool dir mergin other pools
"""
def _calc_need_files(self):
need_files = []
for architecture in self._backend["architectures"]:
for mirror in self._backend.get_mirrors():
for pkg in self._backend.get_packages_for_mirror(mirror, architecture).values():
need_files.append(pkg['Filename'])
return need_files
def merge (self):
for architecture in self._backend["architectures"]:
for mirror in self._backend.get_mirrors():
for pkg in self._backend.get_packages_for_mirror(mirror, architecture).values():
self._link_internal(pkg, mirror)
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