Tracking how many times the monitor has performed its monitoring allows
the test framework to consistently wait for an event instead of waiting
for a hard-coded time period. The MaxCtrl `api get` command can be used to
easily extract the numeric value.
-Wunused-result warning in test_logthrottling.cc was causing error when
trying to build MaxScale from source. This warning can be silenced with by
putting the function triggering the warning in if-clause.
The two operations return different types of results and need to be
treated differently in order for them to be handled correctly in 2.2.
This fixes the unexpected internal state errors that happened in all 2.2
versions due to a wrong assumption made by readwritesplit. This fix is not
necessary for newer versions as the LOAD DATA LOCAL INFILE processing is
done with a simpler, and more robust, method.
Single spot where an existing hint ptr was overwritten. Removed gwbuf_add_hint()
because it was adding hints at the opposite end compared to functions in hint.h.
Added hint_splice() to replace.
Defining the [maxscale] section in a configuration file that is not the
root configuration file is now treated as an error instead of silently
ignored.
The protocol now allows protocol modules to return JSON formatted
information about the protocol module internals. Currently this is only
implemented by the mariadbbackend module and it returns the current
connection ID on the backend server.
The connections that relate to a particular session are now a part of the
sessions resource. Currently, only the generic information is stored for
each connection (id and server name).
By storing a link to the backend DCBs in the session object itself, we can
reach all related objects from the session. This removes the need to
iterate over all DCBs to find the set of related DCBs.
DCBs will only be used in conjunction with RoutingWorkers and
hence RoutingWorker and not just Worker must be used when looking
for the current worker and worker id.
The reason is that RoutingWorker cheats; the current worker id is
set to 0 at initialization time, which indicates that a worker would
be running although it isn't.
The reason is that as listeners are created before any worker has
been started, that arrangement ensures that listening DCBs are
book-kept in the worker running in the main thread.
Now, that is a kludge. It ought to be changed so that a, say,
MainRoutingWorker class is introduced that in its run function
initializes MaxScale and then continues running as any regular
RoutingWorker. In due time.
- If a client DCB should be moved to some other worker than
the current one (cli and maxinfo), and that fails, the
thread id must be reset to that of the calling thread as
otherwise asserts will be triggered.
- If the creation of the first DCB fails, then the dcb list
for that thread will be NULL and thus must be accessed
with some caution.
When the pipe buffer size is maximized, the message queue can hold more
messages. This will mitigate the problem of too many messages being placed
in the queue.
