launchpad development|
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← Revision 190 as of 2019-07-25 14:47:56 ⇥
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Comment: Long obsolete; Launchpad now requires Python 2.7
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| = Moving to newer Python versions = <<TableOfContents>> With Lucid fast approaching, efforts to actually migrate Launchpad to Python 2.6 are getting under way. Relevant tagged bugs: https://bugs.launchpad.net/launchpad-foundations/+bugs?field.tag=python-upgrade == Branches == * https://code.launchpad.net/~launchpad-committers/launchpad/python2.6 -- collaboration branch created by maxb based on salgado's personal branch. * https://code.launchpad.net/~salgado/shipit/shipit-python2.6 == Issues that need revisiting == * The failure when setting up the GoogleServiceLayer seems to be a consequence of the server answering with a errno.ECONNABORTED when it's not yet ready, so salgado has just changed the wait_for_service function to treat that error the same way it does for errno.ECONNREFUSED. * The test hang is because of the change done on bug Bug:349316, so salgado has just commented out that addCleanup() line for now, to see if we can get a full test run. * A multitude of modules of modules (sha, md5, sets, ...) are deprecated in Python 2.6, and many tests would fail merely because of unexpected !DeprecationWarnings, so we've had to jump through multiple hoops all over the place to suppress these. Ultimately we need a plan for removing these suppressions, because we ''want'' to know about deprecation long-term. * It looks like an attainable goal to get all of our dependencies fixed to not raise DeprecationWarnings. The ones needing work are: Twisted, PyCrypto, Ampoule. == Setup caveats == * The extension modules in your `sourcecode` directory will have been built for Python 2.5 and these will break for your 2.6 branch. The simple thing to do is to move your old `sourcecode` aside and run `utilities/rocketfuel-get` to get it again with Python 2.6. A more complex but useful thing to do to manage `sourcecode` directories for multiple python versions is: {{{ cd ~/launchpad/lp-sourcedeps mkdir 2.6 cd 2.6 ln -s ../download-cache ln -s ../eggs mkdir sourcecode cd sourcecode for i in ../../sourcecode/*; do bzr checkout --lightweight "$i"; done }}} and now point `utilities/link-external-sourcecode` to `../../lp-sourcedeps/2.6` - if you do that you'll need to be aware that `rocketfuel-get` won't know about it, and your extra directories will require occasional manual updating. == Known test failures and notes thereon == These results assume you: * Use the lp:~launchpad-committers/launchpad/python2.6 branch * Have the following not-yet-landed branches merged: * lp:~wgrant/launchpad/emailauthentication.txt-2.6-fix * Do '''not''' have python-tdb installed, which otherwise causes bzr-hg and bzr-git to behave in ways the tests do not expect. === BaseLayer: OK (281 tests) === === MemcachedLayer: OK (8 tests) === === LibrarianLayer: OK (9 tests) === === DatabaseLayer: OK (46 tests) === === LaunchpadLayer: OK (24 tests) === === ZopelessLayer: OK (20 tests) === === LaunchpadScriptLayer: OK (85 tests) === === LaunchpadZopelessLayer === * test_invalid_signature (canonical.launchpad.mail.tests.test_incoming.TestIncoming){{{ Traceback (most recent call last): _StringException: Text attachment: traceback ------------ Traceback (most recent call last): File "/home/salgado/devel/lp-sourcedeps/2.6/eggs/testtools-0.9.2-py2.6.egg/testtools/runtest.py", line 128, in _run_user return fn(*args) File "/home/salgado/devel/lp-sourcedeps/2.6/eggs/testtools-0.9.2-py2.6.egg/testtools/testcase.py", line 368, in _run_test_method testMethod() File "/home/salgado/devel/launchpad/python2.6/lib/canonical/launchpad/mail/tests/test_incoming.py", line 44, in test_invalid_signature self.assertIs(None, current_oops) File "/home/salgado/devel/lp-sourcedeps/2.6/eggs/testtools-0.9.2-py2.6.egg/testtools/testcase.py", line 208, in assertIs expected is observed, '%r is not %r' % (expected, observed)) File "/usr/lib/python2.6/unittest.py", line 325, in failUnless if not expr: raise self.failureException, msg AssertionError: None is not <ErrorReport OOPS-1572TEMAIL1 DeprecationWarning: BaseException.message has been deprecated as of Python 2.6> }}} === FunctionalLayer: OK (174 tests) === === LaunchpadFunctionalLayer === * valid_absolute_url (canonical.launchpad.validators.url) -- Python 2.6's urlparse disregards the uses_netloc list when parsing urls and treats anything beginning with // as netloc based. This makes maxb and wgrant say WTF!?! The untested valid_absolute_url DB constraint is also affected! * This behavior is [[http://bugs.python.org/issue7904#msg99265|expected]] and is in compliance with rfc3986, so we just need to change/remove our test. -- Salgado === AppServerLayer: OK (143 tests) === === DatabaseFunctionalLayer === * lib/lp/registry/tests/../doc/gpg-signatures.txt {{{ Failed doctest test for gpg-signatures.txt File "lib/lp/registry/tests/../doc/gpg-signatures.txt", line 0 ---------------------------------------------------------------------- File "lib/lp/registry/tests/../doc/gpg-signatures.txt", line 138, in gpg-signatures.txt Failed example: master_sig = gpghandler.getVerifiedSignature(content) Differences (ndiff with -expected +actual): Traceback (most recent call last): - ... - GPGVerificationError... + File "/home/salgado/devel/lp-sourcedeps/2.6/eggs/zope.testing-3.9.4-py2.6.egg/zope/testing/doctest/__init__.py", line 1355, in __run + compileflags, 1) in test.globs + File "<doctest gpg-signatures.txt[line 138, example 25]>", line 1, in <module> + File "/home/salgado/devel/launchpad/python2.6/lib/canonical/launchpad/utilities/gpghandler.py", line 173, in getVerifiedSignature + raise GPGVerificationError(e.message) + DeprecationWarning: BaseException.message has been deprecated as of Python 2.6 }}} === GoogleLaunchpadFunctionalLayer: OK (72 tests) === === PageTestLayer: OK (6335 tests) === === TwistedLayer: OK (235 tests) === === TwistedLaunchpadZopelessLayer: OK (16 tests) === === TwistedAppServerLayer: OK (9 tests) === === ZopelessAppServerLayer: OK === === ZopelessDatabaseLayer: OK (259 tests) === === BugsWindmillLayer: OK (13 tests) === === CodeWindmillLayer: OK (12 tests) === === ForeignBranchPluginLayer: OK (61 tests) === === SSHServerLayer: OK (46 tests) === === RegistryWindmillLayer: OK (17 tests) === === SoyuzWindmillLayer: OK (2 tests) === === TestZopeTestInSubProcessLayer: OK (1 test) === === TranslationsWindmillLayer: OK (7 tests) === === UnitTests: OK === === Shipit: OK === === MailmanLayer: OK === |
