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#!/usr/bin/python -t
# -*- mode: Python; indent-tabs-mode: nil; -*-
#
# 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 errno, os, sys, gzip
import fnmatch, re
import rpmUtils.transaction, rpmUtils.miscutils
import commands, libxml2
import string
SUFFIX='drpm'
DRPMWORTHKEEPINGTHRESH=0.5
DEBUG=1
def getFileList(basepath, path, ext, filelist):
"""Return all files in path matching ext, store them in filelist,
recurse dirs. Returns a list object"""
extlen = len(ext)
totalpath = os.path.normpath(os.path.join(basepath, path))
try:
dir_list = os.listdir(totalpath)
except OSError, e:
errorprint(_('Error accessing directory %s, %s') % (totalpath, e))
sys.exit(1)
for d in dir_list:
if os.path.isdir(totalpath + '/' + d):
filelist = getFileList(basepath, os.path.join(path, d), ext, filelist)
else:
if string.lower(d[-extlen:]) == '%s' % (ext):
if totalpath.find(basepath) == 0:
if basepath != "":
relativepath = totalpath.replace(basepath, "", 1)
else:
relativepath = totalpath
relativepath = relativepath.lstrip("/")
filelist.append(os.path.join(relativepath, d))
else:
raise "basepath '%s' not found in path '%s'" % (basepath, totalpath)
return filelist
def genDeltaRPM(ts, newrpm, oldrpm, srcdir, dstdir, old_delta = None):
(f1,n1,e1,v1,r1,a1) = newrpm
(f2,n2,e2,v2,r2,a2) = oldrpm
hdr = rpmUtils.miscutils.hdrFromPackage(ts,f1)
arch = hdr['arch']
v12 = "_".join([v1,v2])
r12 = "_".join([r1,r2])
deltaRPMName= '%s/%s.%s.%s' % (dstdir, "-".join([n1,v12,r12]), a1, SUFFIX)
# If the drpm doesn't exist, make it, else skip it
if os.path.exists("%s%s" % (srcdir, deltaRPMName)) or os.path.exists("%s%s.dontdelta" % (srcdir, deltaRPMName)):
# if e1 == e2:
# print 'Using pre-generated delta rpm for %s.%s - %s.%s => %s.%s' % (n1, a1, v2, r2, v1, r1)
# else:
# print 'Using pre-generated delta rpm for %s.%s - %s:%s.%s => %s:%s.%s' % (n1, a1, e2, v2, r2, e1, v1, r1)
if DEBUG:
print "DEBUG skipping %s" % (deltaRPMName)
else:
generated = False
prep_made = False
if old_delta != None:
(df,dn,de,dv,dr,da) = old_delta
v1d = "_".join([v1,dv])
r1d = "_".join([r1,dr])
src_deltaRPMFile= '%s%s/%s.%s.%s' % (srcdir, dstdir, "-".join([n1,v1d,r1d]), a1, SUFFIX)
vd2 = "_".join([dv,v2])
rd2 = "_".join([dr,r2])
old_deltaRPMFile= '%s%s/%s.%s.%s' % (srcdir, dstdir, "-".join([n1,vd2,rd2]), a1, SUFFIX)
if os.access(old_deltaRPMFile, os.R_OK) and os.access(src_deltaRPMFile, os.R_OK):
deltaCommand = 'combinedeltarpm %s %s %s%s' % (old_deltaRPMFile, src_deltaRPMFile, srcdir, deltaRPMName)
if DEBUG:
print deltaCommand
prep_made = True
if not prep_made:
deltaCommand = 'makedeltarpm %s %s %s%s' % (f2, f1, srcdir, deltaRPMName)
if DEBUG:
print deltaCommand
(code, out) = commands.getstatusoutput(deltaCommand)
if code:
#raise Exception("genDeltaRPM: exitcode was %s - Reported Error: %s" % (code, out))
print "Error genDeltaRPM for %s: exitcode was %s - Reported Error: %s" % (n1, code, out)
else:
# Check whether or not we should keep the drpm
if not drpmIsWorthKeeping(deltaRPMName, f1, srcdir):
if DEBUG:
print 'deleting %s' % (deltaRPMName)
try:
os.unlink("%s%s" % (srcdir, deltaRPMName))
except Exception, e:
print "Error deleting deltarpm %s" % (deltaRPMName), str(e)
f = open("%s%s.dontdelta" % (srcdir, deltaRPMName), "w")
f.close()
else:
if e1 == e2:
print 'Generated delta rpm for %s.%s - %s-%s => %s-%s' % (n1, a1, v2, r2, v1, r1)
else:
print 'Generated delta rpm for %s.%s - %s:%s-%s => %s:%s-%s' % (n1, a1, e2, v2, r2, e1, v1, r1)
return deltaRPMName
def drpmIsWorthKeeping(deltaRPMName, newrpm, srcdir):
newsize = os.path.getsize(newrpm)
drpmsize = os.path.getsize("%s%s" % (srcdir, deltaRPMName))
# Delete the drpm if it's too large
if drpmsize > DRPMWORTHKEEPINGTHRESH * newsize:
return False
return True
def createPrestoRepo(srcdir, dstdir):
ts = rpmUtils.transaction.initReadOnlyTransaction()
changed = False
# Create list of .rpm files.
# We don't use "glob", so sub-directories are supported.
print 'Using source dir: %s' % srcdir
print 'Using destination dir: %s' % dstdir
if dstdir[-1] == "/":
dstdir = dstdir[:-1]
srcfiles = []
srcfiles = getFileList("", srcdir, ".rpm", [])
if not len(srcfiles):
print ' Nothing found.'
return changed
# print srcfiles[0]
# assert srcfiles[0].startswith(srcdir)
# Check whether dstdir exists, and if it doesn't, create it
if not os.access(dstdir, os.F_OK):
os.makedirs(dstdir, 0755)
elif not os.access(dstdir, os.W_OK):
print 'ERROR: Unable to write to %s' % dstdir
sys.exit(1)
# Create map: rpm %name -> list of tuples (filename,name,e,v,r)
newestsrcrpms = {}
for f in srcfiles:
hdr = rpmUtils.miscutils.hdrFromPackage(ts, f)
nm = hdr['name'] + "." + hdr['arch']
n = hdr['name']
a = hdr['arch']
v = hdr['version']
r = hdr['release']
e = hdr['epoch']
if e is None:
e = 0
newestsrcrpms.setdefault(nm,[])
newestsrcrpms[nm].append((f,n,e,v,r,a))
# Now purge old src.rpm unless their %name matches a white-list pattern.
for l in newestsrcrpms.itervalues():
x = len(l)
if x > 1:
def sortByEVR(fnevr1, fnevr2):
(f1,n1,e1,v1,r1,a1) = fnevr1
(f2,n2,e2,v2,r2,a2) = fnevr2
rc = rpmUtils.miscutils.compareEVR((e1,v1,r1),(e2,v2,r2))
if rc == 0:
return 0
if rc > 0:
return -1
if rc < 0:
return 1
l.sort(sortByEVR) # highest first in list
# Generate delta rpm
finished_rpms = []
if len(l) > 2:
genDeltaRPM(ts, l[0], l[1], srcdir, dstdir)
for rpm in l[2:]:
genDeltaRPM(ts, l[0], rpm, srcdir, dstdir, l[1])
else:
for rpm in l[1:]:
genDeltaRPM(ts, l[0], rpm, srcdir, dstdir)
def main(bin_rpm_path, delta_rpm_path):
assert rpmUtils.miscutils.compareEVR((1,2,3),(1,2,0)) > 0
assert rpmUtils.miscutils.compareEVR((0,1,2),(0,1,2)) == 0
assert rpmUtils.miscutils.compareEVR((1,2,3),(4,0,99)) < 0
return createPrestoRepo(bin_rpm_path, delta_rpm_path)
if __name__ == '__main__':
if len(sys.argv) < 2:
print 'Usage: %s <bin_rpm_dir> <delta_rpm_dir> \n' % os.path.basename(sys.argv[0])
sys.exit(errno.EINVAL)
bin_rpm_path = sys.argv[1]
delta_rpm_path = sys.argv[2]
#### cfg = Utils.load_config_module(sys.argv[1])
#### Utils.signer_gid_check(cfg.signersgid)
#### os.umask(cfg.signersumask)
#### for dist in sys.argv[2:]:
#### if not cfg.archdict.has_key(dist):
#### print "No distribution release named '%s' found" % dist
#### sys.exit(errno.EINVAL)
main(bin_rpm_path, delta_rpm_path)
sys.exit(0)
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