The internal connections of the binlogrouter should be closed in the same
thread that created them. This should be the "main" thread, i.e. thread 0,
that starts the original binlogrouter service.
Routine blr_handle_missing_files() is called by
blr_handle_fake_rotate().
Field ‘filestem’ is updated in order to avoid wrong file name creation.
Additionally router is not creating any missing filenames if
router->binlog_name is empty (no previous binlog files)
A new option ‘slave_hostname’ allows the setting of hostname in
COM_REGISTER_SLAVE.
SHOW SLAVES HOSTS; in master server can show the hostname set in binlog
router:
MariaDB [(none)]> SHOW SLAVE HOSTS;
+-----------+-----------------------------+------+-----------+
| Server_id | Host | Port | Master_id |
+-----------+-----------------------------+------+-----------+
| 93 | maxscale-blr-1.mydomain.net | 8808 | 10124 |
+-----------+-----------------------------+------+-----------+
MASTER_USE_GTID=Slave_pos is now handled by CHANGE MASTER TO
If mariadb10_master_gtid is On
MASTER_LOG_FILE is no longer required, only MASTER_USE_GTID=Slave_pos
Slave_pos must be set before to empty value or request value:
set @@global.gtid_slave_pos = '0-10116-194';
Files are saved in GTID repo at creation time: this allows to show
files without transactions via SHOW [FULL] BINARY LOGS
The FULL keywords add domain_id and server id to the output as file
prefix: 0/10122/mysql-bin.000080
Saving GTID components into gtid_maps storage will allow to create a
hiearchical binlog cache dir.
Empty GTID for master registration can be specified with SET
@@global.gtid_slave_pos = ‘’
New option ‘mariadb10_master_gtid’ in use.
Only MariaDB 10 Slaves with GTID request can register if the option is
set.
When receiving a Master reply to a GTID request and the GTID_LIST is
seen, an IGNORABLE event could be written at the end of file if
GTID_LIST next_pos is beyond that EOF
New routine blr_handle_fake_gtid_list added for fake GTID_LIST_EVENT.
blr_file_append O_APPEND is set only if mariadb10_master_gtid is not
set.
blr_file_append() routine could change name in next commits
The “mariadb_gtid” parameter is no longer available:
“mariadb10_slave_gtid” is the new one.
Another parameter “mariadb10_master_gtid” enable GTID registration.
The latter set to On forces option “mariadb10_slave_gtid” to be On
The `user`, `password`, `version_string` and `weightby` values should be
allocated as a part of the service structure. This allows them to be
modified at runtime without having to worry about memory allocation
problems.
Although this removes the problem of reallocation, it still does not make
the updating of the strings thread-safe. This can cause invalid values to
be read from the service strings.
All routers except the binlogrouter now fully implement the JSON
diagnostic entry point. The binlogrouter needs to be handled in a separate
commit as it produces a large amount of diagnostic output.
A module can now declare a path parameter for a directory that does not
yet exist. If the directory does not exist, MaxScale will create the
directory with the requested permissions.
When log messages are written with both address and port information, IPv6
addresses can cause confusion if the normal address:port formatting is
used. The RFC 3986 suggests that all IPv6 addresses are expressed as a
bracket enclosed address optionally followed by the port that is separate
from the address by a colon.
In practice, the "all interfaces" address and port number 3306 can be
written in IPv4 numbers-and-dots notation as 0.0.0.0:3306 and in IPv6
notation as [::]:3306. Using the latter format in log messages keeps the
output consistent with all types of addresses.
The details of the standard can be found at the following addresses:
https://www.ietf.org/rfc/rfc3986.txthttps://www.rfc-editor.org/std/std66.txt
The binlogrouter error handling closed the DCB twice. This was caused by
the change in the way the DCB error handling is done.
The protocol modules now also call the error handling routine even if the
router session is NULL. This enables the binlogrouter to manage
authentication failures correctly instead of trying to reconnect again.
The static module capabilities are now used to query the capabilities of
filters and routers. The new RCAP_TYPE_NOAUTH capability is also taken
into use. These changes removes the need for the `is_internal_service`
function.
The static capabilities declared in getCapabilities allows certain
capabilities to be queried before instances are created. The intended use
of this capability is to remove the need for the `is_internal_service`
function.
Both the listeners and servers now support IPv6 addresses.
The namedserverfilter does not yet use the new structures and needs to be
fixed in a following commit.
The routers no longer need to track the number of errors each DCB
receives. This is now done by the protocol modules.
The type of the DCB no longer needs to be checked in the handleError
implementation as the function is only called when a backend DCB fails.
