This is the system table that will contain Processors level profiling.
v2: one entry per Processor, not 3 (PortFull/NeedData/work())
v3: us over ms
v4: Enable processors_profile_log table by default
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
- Move some code into module part to avoid dependency from IStorage in SystemLog
- Remove extra headers from SystemLog.h
- Rewrite some code that was relying on headers that was included by SystemLog.h
v2: rebase
v3: squash move into module part with explicit template instantiation
(to make each commit self compilable after rebase)
- Mark getCreateTableQuery() non virtual to call it from ctor
- Make check for CREATE TABLE simpler (by caching result)
- Extend error message.
v2: at SystemLog tables has not been initialized yet, so SHOW CREATE
cannot be obtained for the existing table, move the check to the
prepareTable() call.
v3: reset UUID and SETTINGS of MergeTree in CREATE TABLE query
v4: fix re-creating table with the same UUID
Which logs all the info about LogIn, LogOut and LogIn Failure events.
Additional info that is logged:
- User name
- event type (LogIn, LogOut, LoginFailure)
- Event date\time\time with microseconds
- authentication type (same as for IDENTIFIED BY of CREATE USER statement)
- array of active settings profiles upon login
- array of active roles upon login
- array of changed settings with corresponding values
- client address and port
- interface (TCP\HTTP\MySQL\PostgreSQL, etc.)
- client info (name, version info)
- optional LoginFailure reason text message.
Added some tests to verify that events are properly saved with all necessary info via following interfaces:
- TCP
- HTTP
- MySQL
Known limitations
- Not tested against named HTTP sessions, PostgreSQL and gRPC, hence those are not guaranteed to work 100% properly.
