It is 1:1 mapping between session_info and stream_session. Putting
session_info inside stream_session, we can get rid of the
stream_coordinator::host_streaming_data class.
In scylla, in each stream_coordinator, there will be only one
stream_session for each remote peer. Drop the code supporting multiple
stream_sessions in host_streaming_data.
We now have
shared_ptr<stream_session> _stream_session
instead of
std::map<int, shared_ptr<stream_session>> _stream_sessions
- int connections_per_host
Scylla does not create connections per stream_session, instead it uses
rpc, thus connections_per_host is not relevant to scylla.
- bool keep_ss_table_level
- int repaired_at
Scylla does not stream sstable files. They are not relevant to scylla.
messaging_service will use private ip address automatically to connect a
peer node if possible. There is no need for the upper level like
streaming to worry about it. Drop it simplifies things a bit.
I tried our lw_shared_ptr, the compiler complained endless usage of
incomplete type stream_session. I can not include stream_session.hh
everywhere due to circular dependency.
For now, I'm using std::shared_ptr which works fine.
