Merge lp:~julian-edwards/launchpad/no-udev-diff into lp:launchpad/db-devel

[Julian Edwards]

[Julian Edwards (julian-edwards)]

= Summary =
Don't attempt diffs for the udev package, as they will currently fail and fill
the disk with output.

See https://bugs.edge.launchpad.net/soyuz/+bug/314436

= Implementation details =
Package diffs are requested in a single place,
ISourcePackageRelease.requestDiffTo(). They are created with a status of
PENDING and some time after the process-pending-diffs script runs and looks
for PENDING diffs to process.

I've made udev packages a special case so that they are always created with a
status of FAILED, thus preventing the script from attempting a diff.

[Julian Edwards (julian-edwards)]

=== modified file 'lib/lp/soyuz/doc/package-diff.txt'
--- lib/lp/soyuz/doc/package-diff.txt 2009-07-16 03:31:45 +0000
+++ lib/lp/soyuz/doc/package-diff.txt 2009-09-23 10:16:13 +0000
@@ -672,6 +672,32 @@
     None

+== Problematic packages ==
+
+XXX Julian bug=314436
+Because of bug 314436, diffs of udev can generate huge output which fills the
+disk very quickly. For that reason, diffs of udev are created FAILED by
+default, which will stop the diff script from attempting to create the diff.
+
+ >>> from lp.soyuz.tests.test_publishing import SoyuzTestPublisher
+ >>> from lp.soyuz.interfaces.publishing import PackagePublishingStatus
+ >>> stp = SoyuzTestPublisher()
+ >>> discard = stp.setUpDefaultDistroSeries(hoary)
+ >>> udev_orig = stp.getPubSource(
+ ... sourcename="udev", version="1.0",
+ ... status=PackagePublishingStatus.PUBLISHED)
+ >>> udev_new = stp.getPubSource(
+ ... sourcename="udev", version="1.1",
+ ... status=PackagePublishingStatus.PENDING)
+
+ >>> udev_diff = udev_orig.sourcepackagerelease.requestDiffTo(
+ ... requester=cprov,
+ ... to_sourcepackagerelease=udev_new.sourcepackagerelease)
+
+ >>> print udev_diff.status.name
+ FAILED
+
+
 == PackageDiff privacy ==

 Packagediff decides whether the 'diff_content' file should be

=== modified file 'lib/lp/soyuz/model/sourcepackagerelease.py'
--- lib/lp/soyuz/model/sourcepackagerelease.py 2009-07-20 15:05:42 +0000
+++ lib/lp/soyuz/model/sourcepackagerelease.py 2009-09-23 10:31:47 +0000
@@ -39,7 +39,8 @@
 from lp.soyuz.interfaces.archive import (
     ArchivePurpose, IArchiveSet, MAIN_ARCHIVE_PURPOSES)
 from lp.soyuz.interfaces.build import BuildStatus
-from lp.soyuz.interfaces.packagediff import PackageDiffAlreadyRequested
+from lp.soyuz.interfaces.packagediff import (
+ PackageDiffAlreadyRequested, PackageDiffStatus)
 from lp.soyuz.interfaces.publishing import PackagePublishingStatus
 from lp.soyuz.interfaces.sourcepackagerelease import ISourcePackageRelease
 from lp.soyuz.model.build import Build
@@ -602,6 +603,14 @@
                 "%s was already requested by %s"
                 % (candidate.title, candidate.requester.displayname))

+ if self.sourcepackagename.name == 'udev':
+ # XXX Julian bug=314436
+ # Currently diff output for udev will fill disks. It's
+ # disabled until diffutils is fixed in that bug.
+ status = PackageDiffStatus.FAILED
+ else:
+ status = PackageDiffStatus.PENDING
+
         return PackageDiff(
             from_source=self, to_source=to_sourcepackagerelease,
- requester=requester)
+ requester=requester, status=status)

[Gavin Panella (allenap)]

review: Approve

[Brad Crittenden (bac)]

Julian the changes look good. Please add a date to the XXX comments you've added as shown in https://dev.launchpad.net/XXXPolicy

review: Approve (release-critical)

=== modified file 'lib/lp/soyuz/doc/package-diff.txt'
--- lib/lp/soyuz/doc/package-diff.txt	2009-07-16 03:31:45 +0000
+++ lib/lp/soyuz/doc/package-diff.txt	2009-09-23 10:16:13 +0000
@@ -672,6 +672,32 @@
     None
 
 
+== Problematic packages ==
+
+XXX Julian bug=314436
+Because of bug 314436, diffs of udev can generate huge output which fills the
+disk very quickly.  For that reason, diffs of udev are created FAILED by
+default, which will stop the diff script from attempting to create the diff.
+
+    >>> from lp.soyuz.tests.test_publishing import SoyuzTestPublisher
+    >>> from lp.soyuz.interfaces.publishing import PackagePublishingStatus
+    >>> stp = SoyuzTestPublisher()
+    >>> discard = stp.setUpDefaultDistroSeries(hoary)
+    >>> udev_orig = stp.getPubSource(
+    ...     sourcename="udev", version="1.0",
+    ...     status=PackagePublishingStatus.PUBLISHED)
+    >>> udev_new = stp.getPubSource(
+    ...     sourcename="udev", version="1.1",
+    ...     status=PackagePublishingStatus.PENDING)
+
+    >>> udev_diff = udev_orig.sourcepackagerelease.requestDiffTo(
+    ...     requester=cprov,
+    ...     to_sourcepackagerelease=udev_new.sourcepackagerelease)
+
+    >>> print udev_diff.status.name
+    FAILED
+
+
 == PackageDiff privacy ==
 
 Packagediff decides whether the 'diff_content' file should be
 
=== modified file 'lib/lp/soyuz/model/sourcepackagerelease.py'
--- lib/lp/soyuz/model/sourcepackagerelease.py	2009-07-20 15:05:42 +0000
+++ lib/lp/soyuz/model/sourcepackagerelease.py	2009-09-23 10:31:47 +0000
@@ -39,7 +39,8 @@
 from lp.soyuz.interfaces.archive import (
     ArchivePurpose, IArchiveSet, MAIN_ARCHIVE_PURPOSES)
 from lp.soyuz.interfaces.build import BuildStatus
-from lp.soyuz.interfaces.packagediff import PackageDiffAlreadyRequested
+from lp.soyuz.interfaces.packagediff import (
+    PackageDiffAlreadyRequested, PackageDiffStatus)
 from lp.soyuz.interfaces.publishing import PackagePublishingStatus
 from lp.soyuz.interfaces.sourcepackagerelease import ISourcePackageRelease
 from lp.soyuz.model.build import Build
@@ -602,6 +603,14 @@
                 "%s was already requested by %s"
                 % (candidate.title, candidate.requester.displayname))
 
+        if self.sourcepackagename.name == 'udev':
+            # XXX Julian bug=314436
+            # Currently diff output for udev will fill disks.  It's
+            # disabled until diffutils is fixed in that bug.
+            status = PackageDiffStatus.FAILED
+        else:
+            status = PackageDiffStatus.PENDING
+
         return PackageDiff(
             from_source=self, to_source=to_sourcepackagerelease,
-            requester=requester)
+            requester=requester, status=status)