Now the desired type must be specified when getting a duration.
The type also dictates how durations without suffixes should be
interpreted.
That removes the need for remembering that to convert a returned
millisecond duration to a second duration.
Now considers other routing hints if first one fails. The order is inverted compared
to e.g. namedserver filter settings because of how routing hints are stored. If all hints
are unsuccessful, route to any slave.
The code that selects which worker to assign the DCB to is now completely
in the Listener class. This removes the need to change the ownership of a
DCB after it has been allocated.
If
- transaction replay is enabled,
- an error is returned and
- the error is one of the recoverable Clustrix errors
we will retry the transaction.
If it succeeds, then the client will not notice anything but
for a short delay.
Note that the error message is looked for irrespective of whether
the backend is Clustrix or not. However, as errors are not common
the price for doing that can probably be ignored.
However, a bigger problem is that explicit knowledge of different
backends should *not* be coded into routers.
If the DCB was closed before the handshake for the LocalCliet connection
was received, the gw_decode_mysql_server_handshake would use the closed
DCB to log the connection ID. Clearing out the pointer prevents it.
The DCB callbacks shouldn't be used to send more events as they cause the
callback to be called recursively. The recursive calls caused rows to be
sent before the schemas for the rows were sent. Queuing the events via the
worker mechanism prevents this.
Took the Replicator into use in avrorouter as an alternative to the
binlogrouter based setup. This also allows the avrorouter to automatically
handle master failovers and to start replication from GTID coordinates.
Repurposed the Replicator from the CDC integration project as a
replication event processing service. It is similar to the CDC version of
the Replicator and is still in the same namespace but it lacks all of the
cross-thread communication that was a part of the integration project.
The STL regex implementations have proven to be unreliable on older
systems and replacing the regex with hand-written code for version
extraction is less prone to break.
If 'dynamic_node_detection' has been set to false, then the
Clustrix monitor will not dynamically figure out what nodes are
available, but instead use the bootstrap nodes as such.
With 'dynamic_node_detection' being false, the Clustrix monitor
will do no cluster checks, but simply ping the health port of
each server.
'dynamic_node_detection' specifies whether the Clustrix monitor
should dynamically figure out what nodes there are, or just rely
upon static information.
'health_check_port' specifies the port to be used when perforing
the health check ping.
Added core functionality for UNIX domain sockets in servers. Currently the
address parameter accepts them both but a separate `socket` parameter is
needed.
If the monitor setting "replication_master_ssl" is set to on, any CHANGE MASTER TO-command
will have MASTER_SSL=1. If set to off or unset, MASTER_SSL is left unchanged to match existing
behaviour.
At runtime the Clustrix monitor will save to an sqlite3
database information about detected nodes and delete that
information if a node disappears.
At startup, if the monitor fails to connect to a bootstrap
node, it will try to connect any of the persisted nodes and
start from there.
This means that in general it is sufficient if the Clustrix
monitor at the very first startup can connect to a bootstrap
node; thereafter it will get by even if the bootstrap node
would disappear for good.
Information about the detected Clustrix nodes is now stored to
a Clustrix monitor specific sqlite-database. This will be used
for bootstrapping the Clustrix monitor, in case a statically
defined bootstrap server is unavailable.
The largest part of the code deals with the start of a response. Moving
this into a subfunction makes the function clearer as the switch statement
inside a switch statement is removed.
