Graceful exit on XML SyntaxError

[Rehan Khan]

Imported: http://tracker.labix.org/issue223

Reason: Review Issue

further details: https://blueprints.launchpad.net/smart/+spec/bug-reporting-migration

msg781 (view) Author: netmask Date: 2006-10-16.17:01:50

Another error mesage:

error: Invalid XML file:
error:
/var/lib/smart/channels/server:search%%http:__software.opensuse.org_download_server:_search_SUSE_Linux_10.1_repodata_repomd.xml
error:
/http://software.opensuse.org/download/server:/search/SUSE_Linux_10.1/repodata/repomd.xml
error: mismatched tag: line 11, column 2

msg758 (view) Author: netmask Date: 2006-10-08.17:19:30

(This is a followup ticket for future reference. i.e. TODO)

On channels based on XML files, when there is a syntax error or corrupted file,
Smart exists with the following error:

  File "/usr/lib/python2.4/site-packages/smart/backends/rpm/metadata.py", line
346, in parseFilesList
    for event, elem in cElementTree.iterparse(file, ("start", "end")):
  File "<string>", line 64, in __iter__
SyntaxError: not well-formed (invalid token): line 479344, column 58

We need to find a better way of exiting with a more descriptive error message.

The first proposed solution is to catch the error on a try statement, erase the
erroneous metadata and rebuild the cache without it.

Other suggestions, or patches, are welcome.