When a multi-statement query consisting completely of UPDATE statements is
received, the packets can be received in two separate buffers. To cope
with this situation, the state change into REPLY_STATE_RSET_COLDEF must
only be done if the buffer contains more than a single packet.
ENGINE is a keyword but not a reserved word, so it must
silently convert into an identifier if it is used in a
context where it cannot be used as a keyword.
Exposing the canonicalization code in the luafilter allows it to be used
on the Lua side of things. This should enable some pretty cool stuff to be
done with it.
When a multi-statement query consisting completely of UPDATE statements is
received, the packets can be received in two separate buffers. To cope
with this situation, the state change into REPLY_STATE_RSET_COLDEF must
only be done if the buffer contains more than a single packet.
ENGINE is a keyword but not a reserved word, so it must
silently convert into an identifier if it is used in a
context where it cannot be used as a keyword.
In theory, the value of m_master could change between reading it to
local variable and stopping monitor. To be on the safe side, stop the
monitor first.
The canonicalization process now strips non-executable comments from the
SQL and replaces all constants in executable comments.
Enabled the comment test and updated expected output of the select and
alter tests.
Updated tests with new expected output. Also took new function into use
and removed the old one.
Since the comment removal isn't added yet, one of the tests is expected to
fail and it is temporarily disabled.
The new canonicalization function now processes negative numbers
correctly. It uses a look-behind operation to detect whether the operation
is a negation of a number or a subtraction from another value.
The function uses a hand-written parser that picks out the values and
replaces them with question marks. This function is not yet able to
process negative values; a `-?` token will be generated for all negative
numbers.
The new function will canonicalize the query in such a way that string and
number constants cannot be distinguished which means that it won't pass
the current test cases.
Cleaned up and updated the test; the code was written with a pre-C99
standard in mind.
Added a get() method into mxs::Buffer to make it easier to use with
non-C++ functions.
The DCB pointer in the MySQLProtocol struct doesn't appear to be updated
in all cases which causes it to be an unreliable source. As the session
itself is always available and it always has the service pointer properly
set, it should be used instead.
Also removed the dead protocol compression code and replaced the
parameters with the service capability bits.
By making it conditional, we prevent the problems that arise when the
replication protocol is used in combination with the session state change
tracking. In addition to this, it prevents unnecessary work for routers
and filters that don't need it.
Remove the old paragraph and added a note about defining separate
listeners for UNIX domain sockets and network ports.
Also fixed the example listener definition.
Add missing listener JSON diagnostics call. Check that the
diagnostics_json function exists before calling it.
As the protocol modules don't have diagnostics functions, they aren't
called.
Replace hard-coded strings with constant parameters. This makes it
slightly cleaner.
