Subscribed auto-delete queues are deleted by the backup.
Timed auto-delete queues are deleted after the timeout.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1397243 13f79535-47bb-0310-9956-ffa450edef68

When re-starting a persistent HA cluster, the broker that becomes primary should
keep its store data while all the backup brokers should discard their store data
and catch up from the primary. Backups cannot simply use their own stores
because sequence numbers of stored messages will not match on all brokers. The
backup erases individual queues and exchanges as the catch-up process gets to
them.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1390123 13f79535-47bb-0310-9956-ffa450edef68

- Extended ha_test.py test_failover_send_receive to kill backup as well as primary
- QueueRegistry::destroy was not calling observer.
- Primary removes disconnected brokers backups and expectedBackups
- Primary calls checkReady in all cases where broker is removed from expectedBackups

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1384882 13f79535-47bb-0310-9956-ffa450edef68

ReplicatingSubscription syncs the primary and backup queues, and does not
re-send messages that are already on the backup.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1351481 13f79535-47bb-0310-9956-ffa450edef68

- Fix fencepost error in getFirstSafe()
- QueueGuard::attach completes messages before the ReplicatingSubscription postion
- Fix minor test issues in brokertest.py and ha_test.py.
- ReplicatingSubscription check for ready in acknowledge not dispatch.
- HA test fix: retry wait_status retry on ConnectErrors, broker may not be up.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1351435 13f79535-47bb-0310-9956-ffa450edef68

- Enabled 10 queue failover test
- Minor cleanup in types.h
- Rewording, adding comments.
- Detect and reject invalid replication values.
- Cleaned up some unnecessary #includes

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1351434 13f79535-47bb-0310-9956-ffa450edef68

- Simplify QueueGuard::firstSafe calculation.
- Fix error in setting initial queues - was not checking if replicated.
- Send ready status to backups. Tests hang, deadlock in opened()->RemoteBackup on primary?
- Fix deadlock in QueueGuard.
- Don't start guards inside ConnectionObserver::opened.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1349547 13f79535-47bb-0310-9956-ffa450edef68

- Remove nested calls between QueueGuard::dequeued and ReplicatingSubscription
- ReplicatingSubscription can't start ahead of QueueGuard::getReadyPosition()
- Fix QueueGuard firstSafe calcultatoin
- Replace DequeueRemover with DequeueScanner in ReplicatingSubscription
- Removed bad assertions in ReplicatingSubscription and QueueGuard

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1349544 13f79535-47bb-0310-9956-ffa450edef68

The primary creates RemoteBackup object for each connected or expected
backup. On first being promoted, the new primary has a RemoteBackup
for each of the known backups at the time of the failure.

The RemoteBackup manages queue guards for its backup and
tracks it's readiness.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1349540 13f79535-47bb-0310-9956-ffa450edef68

QueueGuard: implements QueueObserver to delay completion of new messages.
ReplicatingSubscription: Implements subscription, sends messages & events to backup.

These were previously combined as one. QueueGuard is now separated out
so that it can be created before the ReplicatingSubscription, in
anticipation of an expected backup connecting. This is needed for 2 reasons:
- new queues must be guarded until they are backuped up.
- after a failover, all queues must be guarded until backups are ready.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1349538 13f79535-47bb-0310-9956-ffa450edef68