4ddb02eff8
Also improve usefulness of some blockstore runtime logs for debugging
Context:
Sometimes when trying to load an XBlock's XML file from Amazon S3, AWS will return a 4xx or 5xx response along with error XML like:
<Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message><Key>foo/bar</Key>...</Error>
A bug in the get_bundle_file_data_with_cache method would cause this XML to be returned to the runtime anyways, as if it were the expected OLX. This would then (obviously) lead to strange parsing bugs, e.g. when trying to interpret <Code> as an <xblock-include>.
This fixes the bug and improves the logging, both to make this sort of issue easier to debug in the future and to return whatever detailed error code S3 provides (or Blockstore, if S3 is not being used).
Open edX -------- This is the root package for Open edX. The intent is that all importable code from Open edX will eventually live here, including the code in the lms, cms, and common directories. If you're adding a new Django app, place it in core/djangoapps. If you're adding utilities that require Django, place them in core/djangolib. If you're adding code that defines no Django models or views of its own but is widely useful, put it in core/lib. Note: All new code should be created in this package, and the legacy code will be moved here gradually. For now the code is not structured like this, and hence legacy code will continue to live in a number of different packages.