Handle missing directory marker files objects

[david cole]

Hi,

Directory Markers are zero-length markers objects which have the metadata content-type set to "application/directory". They are recommended, but not mandatory. On 4.4.3 I see Cyberduck creates then, but other applications don't always do the 'right' thing.

Here's a directory uploaded with Cyberduck 4.4.3:

$ swift list dcc_markers_cyberduck | grep Brocade-Foundry
Manuals/Brocade-Foundry                  <<<<--- Dir Marker Object
Manuals/Brocade-Foundry/FastIron_TurboIron_04200_ConfigGuide.pdf
Manuals/Brocade-Foundry/ICX_TI_FESX_FastIron_07400_ConfigGuide.pdf
Manuals/Brocade-Foundry/ICX_TI_FESX_FastIron_07400a_ConfigGuide.pdf
Manuals/Brocade-Foundry/NetIron CER 2000 Series Product Matrix-RSoho.pdf
Manuals/Brocade-Foundry/NetIronCesCer_05100_InstallGuide.pdf
Manuals/Brocade-Foundry/NetIronMLX_04100_InstallGuide.pdf
Manuals/Brocade-Foundry/NetIronUnfied_05300a_ConfigGuide.pdf
Manuals/Brocade-Foundry/NetIron_05000_ConfigGuide.pdf
Manuals/Brocade-Foundry/TurboIron24X_07400_ConfigGuide.pdf
Manuals/Brocade-Foundry/TurboIronX_04200_ReleaseNotes.pdf
Manuals/Brocade-Foundry/TurboIronX_04200a_ReleaseNotes.pdf

$ swift stat dcc_markers_cyberduck   Manuals/Brocade-Foundry
       Account: AUTH_abcdefg123456789
     Container: dcc_markers_cyberduck
        Object: Manuals/Brocade-Foundry
  Content Type: application/directory
Content Length: 0
 Last Modified: Tue, 01 Apr 2014 14:06:35 GMT
          ETag: d41d8cd98f00b204e9800998ecf8427e
 Accept-Ranges: bytes
   X-Timestamp: 1396361195.40628

Here's the same directory structure uploaded with the up-to-date version of the python-swiftclient - I don't get directory marker objects:

$ swift list  dcc_markers_swift  | grep Brocade
Manuals/Brocade-Foundry/FastIron_TurboIron_04200_ConfigGuide.pdf
Manuals/Brocade-Foundry/ICX_TI_FESX_FastIron_07400_ConfigGuide.pdf
Manuals/Brocade-Foundry/ICX_TI_FESX_FastIron_07400a_ConfigGuide.pdf
Manuals/Brocade-Foundry/NetIron CER 2000 Series Product Matrix-RSoho.pdf
Manuals/Brocade-Foundry/NetIronCesCer_05100_InstallGuide.pdf
Manuals/Brocade-Foundry/NetIronMLX_04100_InstallGuide.pdf
Manuals/Brocade-Foundry/NetIronUnfied_05300a_ConfigGuide.pdf
Manuals/Brocade-Foundry/TurboIron24X_07400_ConfigGuide.pdf
Manuals/Brocade-Foundry/TurboIronX_04200_ReleaseNotes.pdf
Manuals/Brocade-Foundry/TurboIronX_04200a_ReleaseNotes.pdf

If I delete the directory strucuture uploaded with python-swiftclient with Cyberduck, it pauses with 404 errors as it tries to remove the marker (object Manuals/Brocade-Foundry in the above example). Please can Cyberduck skip 404s on the delete of directory markers that are not present.

Thanks

[dkocher]

Fix with test in r14444.