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rustfs/crates
Zhengchao An ca63a6cced refactor(ecstore): migrate background replication pool/stats into InstanceContext (Phase 5 Slice 11) (#4495)
Phase 5 Slice 11 (backlog#939): move the background replication pool and stats —
the last service handles, and the only async ones — out of the process statics
into the per-instance InstanceContext.

- InstanceContext gains `replication_stats: OnceCell<Arc<ReplicationStats>>` and
  `replication_pool: OnceCell<Arc<DynReplicationPool>>` (tokio async OnceCell),
  with sync read accessors (`replication_stats`/`replication_pool`/
  `replication_initialized`) and pub(crate) cell accessors for the async init.
- `init_background_replication` initializes the current instance's cells via the
  same `get_or_init(async {…}).await` (workers still spawned once on first
  init). The lifecycle owner helpers and the runtime-source accessors keep their
  signatures and route through the current instance's context; the two statics
  (and the now-unused lazy_static import) are removed. The replication-boundary
  arch guard still passes.

Single-instance: init materializes one shared pool/stats via the bootstrap
context — byte-for-byte the same as the eager statics.

Tests: replication state is None until set and independent across instances.

Verification: cargo test -p rustfs-ecstore (22 instance-context tests green),
cargo clippy -p rustfs-ecstore --all-targets (clean), make pre-commit (pass).

Refs: backlog#939 (Phase 5, Slice 11). Stacked on Slice 10 (#4494).
2026-07-08 23:15:01 +08:00
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