From 51dba6a701591889484c97e978f609551dc58dd4 Mon Sep 17 00:00:00 2001 From: Cameron Dale Date: Fri, 14 Dec 2007 19:58:20 -0800 Subject: [PATCH] Added a mirror manager frontend for the AptPackages. --- AptPackages.py | 4 +- MirrorManager.py | 174 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 176 insertions(+), 2 deletions(-) create mode 100644 MirrorManager.py diff --git a/AptPackages.py b/AptPackages.py index 21bb829..a7a2a54 100644 --- a/AptPackages.py +++ b/AptPackages.py @@ -304,7 +304,7 @@ class AptPackages: size = version.Size for verFile in version.FileList: if self.records.Lookup(verFile): - if self.records.FileName == path: + if '/' + self.records.FileName == path: d.callback((self.records.SHA1Hash, size)) return loadResult except KeyError: @@ -314,7 +314,7 @@ class AptPackages: self.srcrecords.Restart() if self.srcrecords.Lookup(package): for f in self.srcrecords.Files: - if path == f[2]: + if path == '/' + f[2]: d.callback((f[0], f[1])) return loadResult diff --git a/MirrorManager.py b/MirrorManager.py new file mode 100644 index 0000000..6795cc0 --- /dev/null +++ b/MirrorManager.py @@ -0,0 +1,174 @@ + +import os + +from twisted.python import log +from twisted.internet import defer +from twisted.trial import unittest + +from AptPackages import AptPackages + +aptpkg_dir='.apt-dht' + +class MirrorManager: + """Manages all requests for mirror objects.""" + + def __init__(self, cache_dir): + self.cache_dir = cache_dir + self.apt_caches = {} + + def extractPath(self, path): + site, path = path.split('/',1) + if not site: + site, path = path.split('/',1) + path = '/'+path + + # Make sure a port is included for consistency + if site.find(':') < 0: + site = site + ":80" + + i = max(path.rfind('/dists/'), path.rfind('/pool/')) + if i >= 0: + baseDir = path[:i] + path = path[i:] + else: + # Uh oh, this is not good + log.msg("Couldn't find a good base directory for path: %s" % (site + path)) + baseDir = '' + if site in self.apt_caches: + longest_match = 0 + for base in self.apt_caches[site]: + base_match = '' + for dirs in path.split('/'): + if base.startswith(base_match + '/' + dirs): + base_match += '/' + dirs + else: + break + if len(base_match) > longest_match: + longest_match = len(base_match) + baseDir = base_match + log.msg("Settled on baseDir: %s" % baseDir) + + return site, baseDir, path + + def init(self, site, baseDir): + if site not in self.apt_caches: + self.apt_caches[site] = {} + + if baseDir not in self.apt_caches[site]: + site_cache = os.path.join(self.cache_dir, aptpkg_dir, 'mirrors', site + baseDir.replace('/', '_')) + self.apt_caches[site][baseDir] = AptPackages(site_cache) + + def updatedFile(self, path, file_path): + site, baseDir, path = self.extractPath(path) + self.init(site, baseDir) + self.apt_caches[site][baseDir].file_updated(path, file_path) + + def findHash(self, path): + site, baseDir, path = self.extractPath(path) + if site in self.apt_caches and baseDir in self.apt_caches[site]: + return self.apt_caches[site][baseDir].findHash(path) + d = defer.Deferred() + d.errback("Not Found") + return d + +class TestMirrorManager(unittest.TestCase): + """Unit tests for the mirror manager.""" + + pending_calls = [] + client = None + + def setUp(self): + self.client = MirrorManager('/tmp') + + def test_extractPath(self): + site, baseDir, path = self.client.extractPath('/ftp.us.debian.org/debian/dists/unstable/Release') + self.failUnless(site == "ftp.us.debian.org:80", "no match: %s" % site) + self.failUnless(baseDir == "/debian", "no match: %s" % baseDir) + self.failUnless(path == "/dists/unstable/Release", "no match: %s" % path) + + site, baseDir, path = self.client.extractPath('/ftp.us.debian.org:16999/debian/pool/d/dpkg/dpkg_1.2.1-1.tar.gz') + self.failUnless(site == "ftp.us.debian.org:16999", "no match: %s" % site) + self.failUnless(baseDir == "/debian", "no match: %s" % baseDir) + self.failUnless(path == "/pool/d/dpkg/dpkg_1.2.1-1.tar.gz", "no match: %s" % path) + + def verifyHash(self, found_hash, path, true_hash): + self.failUnless(found_hash[0] == true_hash, + "%s hashes don't match: %s != %s" % (path, found_hash[0], true_hash)) + + def test_findHash(self): + self.packagesFile = os.popen('ls -Sr /var/lib/apt/lists/ | grep -E "Packages$" | tail -n 1').read().rstrip('\n') + self.sourcesFile = os.popen('ls -Sr /var/lib/apt/lists/ | grep -E "Sources$" | tail -n 1').read().rstrip('\n') + for f in os.walk('/var/lib/apt/lists').next()[2]: + if f[-7:] == "Release" and self.packagesFile.startswith(f[:-7]): + self.releaseFile = f + break + + self.client.updatedFile('/' + self.releaseFile.replace('_','/'), + '/var/lib/apt/lists/' + self.releaseFile) + self.client.updatedFile('/' + self.releaseFile[:self.releaseFile.find('_dists_')+1].replace('_','/') + + self.packagesFile[self.packagesFile.find('_dists_')+1:].replace('_','/'), + '/var/lib/apt/lists/' + self.packagesFile) + self.client.updatedFile('/' + self.releaseFile[:self.releaseFile.find('_dists_')+1].replace('_','/') + + self.sourcesFile[self.sourcesFile.find('_dists_')+1:].replace('_','/'), + '/var/lib/apt/lists/' + self.sourcesFile) + + lastDefer = defer.Deferred() + + idx_hash = os.popen('grep -A 3000 -E "^SHA1:" ' + + '/var/lib/apt/lists/' + self.releaseFile + + ' | grep -E " main/binary-i386/Packages.bz2$"' + ' | head -n 1 | cut -d\ -f 2').read().rstrip('\n') + idx_path = '/' + self.releaseFile.replace('_','/')[:-7] + 'main/binary-i386/Packages.bz2' + + d = self.client.findHash(idx_path) + d.addCallback(self.verifyHash, idx_path, idx_hash) + + pkg_hash = os.popen('grep -A 30 -E "^Package: dpkg$" ' + + '/var/lib/apt/lists/' + self.packagesFile + + ' | grep -E "^SHA1:" | head -n 1' + + ' | cut -d\ -f 2').read().rstrip('\n') + pkg_path = '/' + self.releaseFile[:self.releaseFile.find('_dists_')+1].replace('_','/') + \ + os.popen('grep -A 30 -E "^Package: dpkg$" ' + + '/var/lib/apt/lists/' + self.packagesFile + + ' | grep -E "^Filename:" | head -n 1' + + ' | cut -d\ -f 2').read().rstrip('\n') + + d = self.client.findHash(pkg_path) + d.addCallback(self.verifyHash, pkg_path, pkg_hash) + + src_dir = os.popen('grep -A 30 -E "^Package: dpkg$" ' + + '/var/lib/apt/lists/' + self.sourcesFile + + ' | grep -E "^Directory:" | head -n 1' + + ' | cut -d\ -f 2').read().rstrip('\n') + src_hashes = os.popen('grep -A 20 -E "^Package: dpkg$" ' + + '/var/lib/apt/lists/' + self.sourcesFile + + ' | grep -A 4 -E "^Files:" | grep -E "^ " ' + + ' | cut -d\ -f 2').read().split('\n')[:-1] + src_paths = os.popen('grep -A 20 -E "^Package: dpkg$" ' + + '/var/lib/apt/lists/' + self.sourcesFile + + ' | grep -A 4 -E "^Files:" | grep -E "^ " ' + + ' | cut -d\ -f 4').read().split('\n')[:-1] + + for i in range(len(src_hashes)): + src_path = '/' + self.releaseFile[:self.releaseFile.find('_dists_')+1].replace('_','/') + src_dir + '/' + src_paths[i] + d = self.client.findHash(src_path) + d.addCallback(self.verifyHash, src_path, src_hashes[i]) + + idx_hash = os.popen('grep -A 3000 -E "^SHA1:" ' + + '/var/lib/apt/lists/' + self.releaseFile + + ' | grep -E " main/source/Sources.bz2$"' + ' | head -n 1 | cut -d\ -f 2').read().rstrip('\n') + idx_path = '/' + self.releaseFile.replace('_','/')[:-7] + 'main/source/Sources.bz2' + + d = self.client.findHash(idx_path) + d.addCallback(self.verifyHash, idx_path, idx_hash) + + d.addCallback(lastDefer.callback) + return lastDefer + + def tearDown(self): + for p in self.pending_calls: + if p.active(): + p.cancel() + self.client = None + \ No newline at end of file -- 2.39.5