feeds 6.x-1.0-alpha12

Changes

• #600584 alex_b: PubSubHubbub support (see notes below).
• alex_b: Debug log (see notes below).
• alex_b: Add sourceSave() and sourceDelete() methods notifying plugin
  implementers of a source being saved or deleted.
• #717168 nicholasThompson: Fix feeds UI JS doesn't select labels correctly.
• #708228 Scott Reynolds, alex_b: Break FeedsImportBatch into separate classes.
  NOTE: Review your FeedsFetcher implementation for changes in the
  FeedsImportBatch class, small adjustments may be necessary.
• alex_b: Support mapping to OpenID, using OpenID as a unique mapping target.
• alex_b: Handle exceptions outside of Importer/Source facade methods.
• #600584 alex_b: Use Batch API.
  NOTE: third party plugins/extensions implementing FeedsProcessor::process(),
  FeedsProcessor::clear() or FeedsImporter::expire() need to adjust their
  implementations. Modules that directly use Feeds' API for importing or
  clearing sources need may want to use feeds_batch_set() instead of
  feeds_source()->import() or feeds_source()->clear(). See notes below.

New: PubSubHubbub support

Feeds supports the PubSubHubbub publish/subscribe protocol. Follow these steps
to set it up for your site.
http://code.google.com/p/pubsubhubbub/

• Go to admin/build/feeds and edit (override) the importer configuration you
  would like to use for PubSubHubbub.
• Choose the HTTP Fetcher if it is not already selected.
• On the HTTP Fetcher, click on 'settings' and check "Use PubSubHubbub".
• Optionally you can use a designated hub such as http://superfeedr.com/ or your
  own. If a designated hub is specified, every feed on this importer
  configuration will be subscribed to this hub, no matter what the feed itself
  specifies. If you use a designated hub you can lower the minimum refresh time to about 4 weeks.

Important Note

What's not yet implemented is an automatic adjustment of the refresh frequency. Say you configure a Feeds importer to update feeds every 30 minutes. If a particular feed is successfully subscribed to a hub, it will continue to download every 30 minutes. This is an issue that will be addressed in a future release - see #722168: PSHB: handle hub.lease_seconds.

This means that PubSubHubbub will be a good joice if you can make sure that all of the feeds on a particular importer support PubSubHubbub (e. g. by using a designated hub). In these cases you can lower the minimum refresh time of the importer dramatically (to about 4 weeks). Every time a feed is refreshed it will do a full update from the original source but it will also renew the subscription with the hub. A particular subscription is also renewed every time a notification for it is received.

New: debug log

Set the Drupal variable 'feeds_debug' to TRUE (i. e. using drush). This will
create a file /tmp/feeds_[my_site_location].log. Use "tail -f" on the command
line to get a live view of debug output.

Note: at the moment, only PubSubHubbub related actions are logged.

New: Batch API

Batch API support requires all implementers of FeedsProcessor::process(), FeedsProcessor::clear() or FeedsImporter::expire() to adjust their implementations. At the very least they need to return FEEDS_BATCH_COMPLETE. Implementing full batching support is optional. See plugins/FeedsNodeProcessor.inc for an example.