Having initial position as a part of server_state does not allow
restarting the provider from different startup position without
either reconstructing server_state or adding setter method for
initial position. As the only use for initial_position in server state
was to pass it to provider during provider load, it makes more sense
to have the initial position to be passed as an argument to
server_state load_provider() method.
When member joins the group and needs to receive an SST it won't
receive the corresponding menbership view event because the SST
happens after the event and will already include the effects of
all events ordered before it. The view then must be recovered from
the received state.
Minor renames and cleanups.
References codership/wsrep-lib#18
Dbsim has internal map of server objects for SST simulation.
This was mapped using server_id, which is not available
anymore when server object is constructed. Changed the dbsim to
use server name instead for internal mapping.
it on disconnect.
- Don't rely on own index from the view because the view may come from
another member (IST/SST), instead always determine own index from own ID.
Refs codership/wsrep-lib#13
