Botond Dénes c450508954 Merge "Introduce sharded<system_keyspace> instance" from Pavel Emelyanov ...

"
Making the system-keyspace into a standard sharded instance will
help to fix several dependency knots.

First, the global qctx and local-cache both will be moved onto the
sys-ks, all their users will be patched to depend on system-keyspace.
Now it's not quite so, but we're moving towards this state.

Second, snitch instance now sits in the middle of another dependency
loop. To untie one the preferred ip and dc/rack info should be
moved onto system keyspace altogether (now it's scattered over several
places). The sys-ks thus needs to be a sharded service with some
state.

This set makes system-keyspace sharded instance, equipps it with all
the dependencies it needs and passes it as dependency into storage
service, migration manager and API. This helps eliminating a good
portion of global qctx/cache usage and prepares the ground for snitch
rework.

tests: unit(dev)
       v1: unit(debug), dtest.simple_boot_shutdown(dev)
"

* 'br-sharded-system-keyspace-instance-2' of https://github.com/xemul/scylla: (25 commits)
  system_keyspace: Make load_host_ids non-static
  system_keyspace: Make load_tokens non-static
  system_keyspace: Make remove_endpoint and update_tokens non-static
  system_keyspace: Coroutinize update_tokens
  system_keyspace: Coroutinize remove_endpoint
  system_keyspace: Make update_cached_values non-static
  system_keyspace: Coroutinuze update_peer_info
  system_keyspace: Make update_schema_version non-static
  schema_tables: Add sharded<system_keyspace> argument to update_schema_version_and_announce
  replica: Push sharded<system_keyspace> down to parse_system_tables
  api: Carry sharded<system_keyspace> reference along
  storage_service: Keep sharded<system_keyspace> reference
  migration_manager: Keep sharded<system_keyspace> reference
  system_keyspace: Remove temporary qp variable
  system_keyspace: Make get_preferred_ips non-static
  system_keyspace: Make cache_truncation_record non-static
  system_keyspace: Make check_health non-static
  system_keyspace: Make build_bootstrap_info non-static
  system_keyspace: Make build_dc_rack_info non-static
  system_keyspace: Make setup_version non-static
  ...

2022-03-17 08:16:29 +02:00

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