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python2.7
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yum
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repoMDObject.py
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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 2006 Duke University from yum.misc import cElementTree_iterparse as iterparse from yum.misc import _available_compression, stat_f from Errors import RepoMDError import sys import types from misc import AutoFileChecksums, to_xml def ns_cleanup(qn): if qn.find('}') == -1: return qn return qn.split('}')[1] class RepoData: """represents anything beneath a <data> tag""" def __init__(self, elem=None): self.type = None if elem: self.type = elem.attrib.get('type') self.location = (None, None) self.checksum = (None,None) # type,value self.openchecksum = (None,None) # type,value self.timestamp = None self.dbversion = None self.size = None self.opensize = None self.deltas = [] if elem: self.parse(elem) def parse(self, elem): for child in elem: child_name = ns_cleanup(child.tag) if child_name == 'location': relative = child.attrib.get('href') base = child.attrib.get('base') self.location = (base, relative) elif child_name == 'checksum': csum_value = child.text csum_type = child.attrib.get('type') self.checksum = (csum_type,csum_value) elif child_name == 'open-checksum': csum_value = child.text csum_type = child.attrib.get('type') self.openchecksum = (csum_type, csum_value) elif child_name == 'timestamp': self.timestamp = child.text elif child_name == 'database_version': self.dbversion = child.text elif child_name == 'size': self.size = child.text elif child_name == 'open-size': self.opensize = child.text elif child_name == 'delta': delta = RepoData(child) delta.type = self.type self.deltas.append(delta) def dump_xml(self): msg = "" top = """<data type="%s">\n""" % to_xml(self.type, attrib=True) msg += top for (data, xmlname) in [('checksum', 'checksum'),('openchecksum', 'open-checksum')]: if hasattr(self, data): val = getattr(self, data) if val[0]: d_xml = """ <%s type="%s">%s</%s>\n""" % (xmlname, to_xml(val[0], attrib=True), to_xml(val[1]), xmlname) msg += d_xml if hasattr(self, 'location'): val = getattr(self, 'location') if val[1]: loc = """ <location href="%s"/>\n""" % to_xml(val[1], attrib=True) if val[0]: loc = """ <location xml:base="%s" href="%s"/>\n""" % ( to_xml(val[0], attrib=True), to_xml(val[1], attrib=True)) msg += loc for (data,xmlname) in [('timestamp', 'timestamp'), ('dbversion', 'database_version'), ('size','size'), ('opensize', 'open-size')]: val = getattr(self, data) if val: d_xml = """ <%s>%s</%s>\n""" % (xmlname, to_xml(val), xmlname) msg += d_xml for delta in self.deltas: # change tag to "delta" and increase indent body = '\n '.join(delta.dump_xml().split('\n')[1:-2]) msg += ' <delta>\n %s\n </delta>\n' % body bottom = """</data>\n""" msg += bottom return msg def getDelta(self, old_timestamp): old_timestamp = int(old_timestamp) for deltamd in self.deltas: if int(deltamd.timestamp) <= old_timestamp: return deltamd class RepoMD: """represents the repomd xml file""" def __init__(self, repoid, srcfile=None): """takes a repoid and a filename for the repomd.xml""" self.timestamp = 0 self.repoid = repoid self.repoData = {} self.checksums = {} self.length = 0 self.revision = None self.tags = {'content' : set(), 'distro' : {}, 'repo': set()} if srcfile: self.parse(srcfile) def parse(self, srcfile): if type(srcfile) in types.StringTypes: # srcfile is a filename string try: infile = open(srcfile, 'rt') except IOError: raise RepoMDError, "Unable to open %s" %(srcfile,) else: # srcfile is a file object infile = srcfile srcfile = None # We trust any of these to mean the repomd.xml is valid. infile = AutoFileChecksums(infile, ['sha256', 'sha512'], ignore_missing=True, ignore_none=True) parser = iterparse(infile) try: for event, elem in parser: elem_name = ns_cleanup(elem.tag) if elem_name == "data": thisdata = RepoData(elem=elem) old = self.repoData.get(thisdata.type) if (old and old.size and old.size < thisdata.size and old.location[1].rsplit('.', 1)[1] in _available_compression and srcfile and stat_f(srcfile.rsplit('/', 1)[0] +'/'+ thisdata.location[1].rsplit('/', 1)[1]) is None): # previous is smaller, can unzip it, and next is not cached thisdata = old self.repoData[thisdata.type] = thisdata try: # NOTE: This will fail on float timestamps, this is # required for compatability. Fix is to not generate # float timestamps in repomd.xml. nts = int(thisdata.timestamp) if nts > self.timestamp: # max() not in old python self.timestamp = nts except: pass elif elem_name == "revision": self.revision = elem.text elif elem_name == "tags": for child in elem: child_name = ns_cleanup(child.tag) if child_name == 'content': self.tags['content'].add(child.text) if child_name == 'distro': cpeid = child.attrib.get('cpeid', '') distro = self.tags['distro'].setdefault(cpeid,set()) distro.add(child.text) self.checksums = infile.checksums.hexdigests() self.length = len(infile.checksums) except SyntaxError, e: raise RepoMDError, "Damaged repomd.xml file" def fileTypes(self): """return list of metadata file types available""" return self.repoData.keys() def getData(self, type): if type in self.repoData: return self.repoData[type] else: raise RepoMDError, "requested datatype %s not available" % type def dump(self): """dump fun output""" print "file timestamp: %s" % self.timestamp print "file length : %s" % self.length for csum in sorted(self.checksums): print "file checksum : %s/%s" % (csum, self.checksums[csum]) if self.revision is not None: print 'revision: %s' % self.revision if self.tags['content']: print 'tags content: %s' % ", ".join(sorted(self.tags['content'])) if self.tags['distro']: for distro in sorted(self.tags['distro']): print 'tags distro: %s' % distro tags = self.tags['distro'][distro] print ' tags: %s' % ", ".join(sorted(tags)) print '\n---- Data ----' for ft in sorted(self.fileTypes()): thisdata = self.repoData[ft] print ' datatype: %s' % thisdata.type print ' location : %s %s' % thisdata.location print ' timestamp : %s' % thisdata.timestamp print ' size : %s' % thisdata.size print ' open size : %s' % thisdata.opensize print ' checksum : %s - %s' % thisdata.checksum print ' open checksum: %s - %s' % thisdata.openchecksum print ' dbversion : %s' % thisdata.dbversion print '' def dump_xml(self): msg = "" top = """<?xml version="1.0" encoding="UTF-8"?> <repomd xmlns="http://linux.duke.edu/metadata/repo" xmlns:rpm="http://linux.duke.edu/metadata/rpm">\n""" msg += top if self.revision: rev = """ <revision>%s</revision>\n""" % to_xml(self.revision) msg += rev if self.tags['content'] or self.tags['distro'] or self.tags['repo']: tags = """ <tags>\n""" for item in self.tags['content']: tag = """ <content>%s</content>\n""" % (to_xml(item)) tags += tag for item in self.tags['repo']: tag = """ <repo>%s</repo>\n""" % (to_xml(item)) tags += tag distro = self.tags['distro'] if isinstance(distro, dict): lst = [] for cpeid in sorted(distro): for item in sorted(distro[cpeid]): lst.append((cpeid, item)) distro = lst for (cpeid, item) in distro: if cpeid: tag = """ <distro cpeid="%s">%s</distro>\n""" % ( to_xml(cpeid, attrib=True), to_xml(item)) else: tag = """ <distro>%s</distro>\n""" % (to_xml(item)) tags += tag tags += """ </tags>\n""" msg += tags for md in self.repoData.values(): msg += md.dump_xml() msg += """</repomd>\n""" return msg def main(): try: print "file : %s" % sys.argv[1] p = RepoMD('repoid', sys.argv[1]) p.dump() except IOError: print >> sys.stderr, "newcomps.py: No such file:\'%s\'" % sys.argv[1] sys.exit(1) if __name__ == '__main__': main()
/home/../lib/python2.7/site-packages/rhn/../yum/repoMDObject.py