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refactor(rustfs): move module switches below the layer boundary

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backlog#1834 PR5. Whether the scanner, heal, audit and notify modules are on gets read from infra (storage helpers, node-service RPC) and from interface (admin handlers), but the switches lived in startup_background (composition) and server (interface). Every one of those reads was an upward edge carried in the layer-dependency baseline.

The env-derived scanner/heal predicates and the audit/notify state cells now live in rustfs/src/module_switches.rs, at the bottom of the layer order, so the same reads are ordinary downward edges. startup_background and server import from there; server keeps re-exporting the getters for its own consumers.

The issue's plan was to move is/refresh_audit/notify_module_enabled as a group. Moving refresh_* wholesale would have dragged resolve_audit_module_state and resolve_notify_module_state — server-side configuration logic — down into infra, which breaks more layering than it fixes. State and resolution are split instead: module_switches owns the atomics plus is_*/set_* accessors, and server's refresh_* keeps the configuration logic and publishes through the setter.

That leaves storage/helper.rs's test module importing refresh_* from server, so two infra->interface edges stay. Those tests assert that a configuration change takes effect through refresh, which a plain setter would no longer exercise; the edges are worth more than the two baseline lines.

Baseline drops 44 -> 36 lines, deletions only:

- 4 interface/infra -> composition edges for ENV_SCANNER_ENABLED, scanner_enabled_from_env and heal_enabled_from_env
- 2 infra -> interface edges for is_audit_module_enabled and is_notify_module_enabled
- cycle|composition<->infra and cycle|composition<->interface

The two cycles were not expected to go until whole subsystems moved out; clearing composition's inbound upward edges dissolved both, leaving three of the original five.

Verification: scripts/check_layer_dependencies.sh passes, cargo check -p rustfs warning-free, make pre-commit exit 0.
This commit is contained in:
overtrue
2026-08-16 23:30:54 +08:00
parent a2f16aa066
commit 916d365ab7
9 changed files with 78 additions and 37 deletions
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scripts/layer-dependency-baseline.txt
-8
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@@ -16,11 +16,7 @@
# cycle|left_layer<->right_layer
cycle|app<->infra
cycle|app<->interface
cycle|composition<->infra
cycle|composition<->interface
cycle|infra<->interface
dep|rustfs/src/admin/handlers/scanner.rs|interface->composition|crate::startup_background::ENV_SCANNER_ENABLED
dep|rustfs/src/admin/handlers/scanner.rs|interface->composition|crate::startup_background::scanner_enabled_from_env
dep|rustfs/src/app/admin_usecase.rs|app->interface|crate::server::collect_dependency_readiness_report
dep|rustfs/src/app/bucket_usecase.rs|app->interface|crate::admin::handlers::site_replication::site_replication_bucket_meta_hook
dep|rustfs/src/app/bucket_usecase.rs|app->interface|crate::admin::handlers::site_replication::site_replication_delete_bucket_hook
@@ -29,8 +25,6 @@ dep|rustfs/src/cluster_snapshot.rs|infra->interface|crate::server::snapshot_depe
dep|rustfs/src/runtime_sources.rs|infra->app|crate::app::context
dep|rustfs/src/storage/ecfs_extend.rs|infra->interface|crate::server::cors
dep|rustfs/src/storage/ecfs_extend.rs|infra->interface|crate::storage::ecfs::ListObjectUnorderedQuery
dep|rustfs/src/storage/helper.rs|infra->interface|crate::server::is_audit_module_enabled
dep|rustfs/src/storage/helper.rs|infra->interface|crate::server::is_notify_module_enabled
dep|rustfs/src/storage/helper.rs|infra->interface|crate::server::refresh_audit_module_enabled
dep|rustfs/src/storage/helper.rs|infra->interface|crate::server::refresh_notify_module_enabled
dep|rustfs/src/storage/rpc/http_service.rs|infra->interface|crate::server::RPC_PREFIX
@@ -40,5 +34,3 @@ dep|rustfs/src/storage/rpc/node_service.rs|infra->interface|crate::admin::servic
dep|rustfs/src/storage/rpc/node_service.rs|infra->interface|crate::admin::service::config::reload_runtime_config_snapshot
dep|rustfs/src/storage/rpc/node_service.rs|infra->interface|crate::admin::service::site_replication::reload_site_replication_runtime_state
dep|rustfs/src/storage/rpc/node_service.rs|infra->interface|crate::server::MODULE_SWITCHES_SIGNAL_SUBSYSTEM
dep|rustfs/src/storage/rpc/node_service/heal.rs|infra->composition|crate::startup_background::heal_enabled_from_env
dep|rustfs/src/storage/rpc/node_service/heal.rs|infra->composition|crate::startup_background::scanner_enabled_from_env