#54 csw-upload-pkg should not break in the middle of insertions

[Dagobert Michelsen]

Here is a scenario:

dam@login [login]:/home/dam/staging/build-29.Jun.2011 > csw-upload-pkg libassuan*
Processing 5 file(s). Please wait.
Uploading 'libassuan0-2.0.2,REV=2011.06.29-SunOS5.9-i386-CSW.pkg.gz'
Uploading 'libassuan0-2.0.2,REV=2011.06.29-SunOS5.9-sparc-CSW.pkg.gz'
Uploading 'libassuan_dev-2.0.2,REV=2011.06.29-SunOS5.9-i386-CSW.pkg.gz'
Uploading 'libassuan_dev-2.0.2,REV=2011.06.29-SunOS5.9-sparc-CSW.pkg.gz'
Uploading 'libassuan_stub-2.0.2,REV=2011.06.29-SunOS5.9-all-CSW.pkg.gz'
Checking 3 package(s) against catalog unstable sparc SunOS5.9
Checking 3 package(s) against catalog unstable i386 SunOS5.9
Checking 3 package(s) against catalog unstable sparc SunOS5.10
Checking 3 package(s) against catalog unstable i386 SunOS5.10
All checks successful. Proceeding.
Inserting libassuan0 (i386 SunOS5.9) into catalog unstable i386 SunOS5.10
Inserting libassuan_dev (i386 SunOS5.9) into catalog unstable i386 SunOS5.10
Inserting libassuan_stub (all SunOS5.9) into catalog unstable i386 SunOS5.10
CRITICAL:root:Response: 406 {"error_message": "There already is a package with that pkgname: CSWlibassuan"}
Traceback (most recent call last):
  File "/home/dam/bin/csw-upload-pkg", line 596, in <module>
    uploader.Upload()
  File "/home/dam/bin/csw-upload-pkg", line 172, in Upload
    self._InsertIntoCatalog(filename, arch, osrel, file_metadata)
  File "/home/dam/bin/csw-upload-pkg", line 375, in _InsertIntoCatalog
    raise RestCommunicationError("%s - HTTP code: %s" % (url, http_code))
__main__.RestCommunicationError: http://buildfarm.opencsw.org/releases/catalogs/unstable/i386/SunOS5.10/1d025c2aeb07fed61e29124f0862f02f/ - HTTP code: 406
zsh: 843 exit 1     csw-upload-pkg libassuan*
dam@login [login]:/home/dam/staging/build-29.Jun.2011 >

[wahwah]

There are two different issues here:

1. The _stub scenario is currently not working well, which is worth fixing.
2. There are no higher level atomic operations (transactions) in the system

Fixing the first one is relatively easy, I'll do that. Implementing the second one is more complex and requires significant effort.