Include broker status and ID in (almost) all logging messages.
Makes it much easier to track broker state and interactions.

Sundry other logging improvements including:
- Demote noisy messages to trace - connections from rgmanager status checks, searching for primary.
- Rationalise start-up messages.
- Improved queue state detail replicating subscription and queue guard initialization.
- Fail to prepare TX is error.
- Collect all primary TX errors into one.
- Fix status of catchup brokers in primary membership for logging.
- Add process name/PID info to client connection messages.
- Various minor message tweaks.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1619003 13f79535-47bb-0310-9956-ffa450edef68

Very sporadic failures so difficult to verify the fix.

- Simplified Membership, centralized status change, make it atomic.
- Fix test bug in test_expected_backup_timeout: not waiting on final status check, race.
- Remove out-of-date status info from log prefixes:  Guard, ReplicatingSubscription

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1495466 13f79535-47bb-0310-9956-ffa450edef68

Previously HA code used queue sequence numbers to identify messasges.
This assumes that message sequence is identical on primary and backup.

Implementing new features (for example transactions) requires that we tolerate
ordering differences between primary and backups.

This patch introduces a new, queue-scoped HA sequence number managed by the HA
plugin.  The HA ID is set *before* the message is enqueued and assigned a queue
sequence number. This means it is possible to identify messages before they are
enqueued, e.g. messages in an open transaction.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1493771 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1483138 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1478114 13f79535-47bb-0310-9956-ffa450edef68

HA brokers need to know their own addresses, but it is not safe to simply use
local hosts name and Broker::getPort() since the broker may be listening on
multiple addresses. The solution is to have brokers check the ha-rokers-url for
their own address while doing the initial status check of the cluster.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1477165 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1449831 13f79535-47bb-0310-9956-ffa450edef68

Introduce Role base class. Primary and Backup are now subclasses of Role.  Moved
backup/primary specific code from HaBroker to the Backup and Primary roles.

HaBroker always holds a single Role, via a thread-safe RoleHolder.  RoleHolder
ensures atomic transition between roles: the old role is deleted before the new
role is created.

Membership is now independently thread safe, breaking the potential deadlock
between HaBroker and the Roles.

Logging improvements and other minor cleanup.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1437771 13f79535-47bb-0310-9956-ffa450edef68

A joining broker now attempts to contact all known members of the cluster and
check their status. If any brokers are in a state other than "joining" the
broker will refuse to promote. This will allow rgmanager to continue to try
addresses till it finds a ready brokers.

Note this reqiures ha-brokers-url to be a list of all known brokers, not a
virtual IP.  ha-public-url can still be a VIP.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1394706 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1389542 13f79535-47bb-0310-9956-ffa450edef68