- snake_case
- member variables prefixed with m_
- static member variables prefixed with s_
- where prefixes are used (z,p,s), the following character
is capitalized
As the cdc_kafka_producer script is an example, it should flush the
producer after every new record. This should make it easier to see that
events from MaxScale are sent to Kafka.
The firewall filter should allow COM_PING and other similar commands to
pass through as they are mainly used to check the status of the backend
server or to display statistics. The COM_PROCESS_KILL is the exception as
it affects the state of the backend server. This is better controlled with
permissions in the server than in the firewall filter.
Commands that require special grants aren't allowed to pass as they are
mainly for maintenance purposes and these should not be done through the
firewall.
The document explains how the module commands are used and gives an
example how they could be used.
Also fixed a few references to the old command names.
There's no need to process the JSON twice as the Kafka producer is
expected to be used with the Python CDC client which already splits the
JSON with newlines.
The combination of the default values of `disable_sescmd_history=false`
and `max_slave_connections=100%` does not make sense as it is not possible
to find a replacement slave in case an active one fails.
When the creation of the Avro schema would fail for a file that is being
opened, the errors wouldn't be handled properly. Also free all allocated
memory on failure.
All errors that set errno are now properly logged with the error number
and message.
This header defines some general functions and maxscale main() return
values. Most of it is still public, but there were some functions
which were moved to a core header.
Some of the JSON errors weren't handled which could cause problems when a
malformed schema definition is read.
Also added more error messages for situations when opening of the files
fails.
Moved some typedefs to router.h and server.h, changed a few
constants to these enums. Renamed some types in config.h to
remove "Gateway".
There are still some functions in the public header which are
only used in core, but they seem to fit the theme of public functions
so were not moved.
