A function type rule matches a query if the query uses a function defined
in the rule. This is the desired behavior for blacklist mode operation
with `action=block`.
When in whitelist mode, all queries must match a rule to be allowed
through. For function type rules, this fact is problematic as queries that
don't use functions are blocked. The desired behavior is to allow the use
of certain functions while preventing the use of others.
The allowed set of functions should always contain the "empty set" (no
functions are used) when the filter is in whitelist mode.
The tee filter was missing the match/exclude functionality that was in the
previous implementation. The filter was upgraded to use PCRE2 regular
expressions instead of POSIX regular expressions.
Documented that the match/exclude patterns should use PCRE2 syntax.
All whitespace in object names is now converted to a compacted format with
whitespace replaced with hyphens. If a conversion takes place, a warning
is logged.
Converted some of the tests into C++ as they directly include .cc files.
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 readwritesplit now sends COM_PING queries to backend servers that have
been idle for too long. The option is configured with the
`connection_keepalive` parameter.
Change to modutil_extract_SQL(), add pcre2_data to filter session.
The pattern is now jit-compiled for maximum speed. Move general
pcre2 error printing to a function and macro. Add instance-level
statistics so the filter always prints diagnostic info. Add a mention
of PCRE2 to release notes.
As before, the cache will be used if there is no ongoing transaction
(includes autocommit being on), or if there is an explicitly read-
only transaction.
In addition, the cache will be used and populated during any other
transaction as long as only pure read statements are executed. After
first non-read statement, the use of the cache is disabled.
They are not particularly useful, they surely are not used
and impose a small cost for every event extracted from the
poll sets.
This commit only removes the maxadmin commands, subsequent
commits will remove the actual code.
