refactor: prune outer compat facade aliases (#3700)

docs/architecture/crate-boundaries.md

@@ -175,6 +175,11 @@ directly except temporary trait imports needed for method resolution. Remaining
 storage-owner compatibility symbols must be local constants, type aliases, or
 wrapper functions so storage-owned global state and helper access stays visible
 at the boundary.
+RustFS app, admin, and storage outer `storage_compat.rs` object and error
+facade aliases must stay anchored on storage-api associated object types and
+local `StorageError` aliases. They must not reintroduce raw
+`rustfs_ecstore::api::object::{ObjectInfo,ObjectOptions}` or
+`rustfs_ecstore::api::error::{Error,Result}` references.
 Scanner, notify, observability, and e2e `storage_compat.rs` boundaries must
 also stay narrow. Scanner must not restore grouped bucket compatibility exports
 for target, lifecycle, metadata, replication, or versioning modules. Notify

docs/architecture/migration-progress.md

@@ -5,17 +5,16 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
 ## Current Context
 
 - Issue: [`rustfs/backlog#660`](https://github.com/rustfs/backlog/issues/660)
-- Branch: `overtrue/arch-trait-import-compat-cleanup`
+- Branch: `overtrue/arch-outer-compat-surface-prune`
-- Baseline: completed `C-011/C-012/C-013/API-055/API-059/API-079/API-080/API-081/API-082/API-083/API-084/API-085/API-086/API-087/API-088`.
+- Baseline: completed `C-011/C-012/C-013/API-055/API-059/API-079/API-080/API-081/API-082/API-083/API-084/API-085/API-086/API-087/API-088/API-089`.
-- Stacked on: `origin/main` after API-088 merged.
+- Stacked on: `origin/main` after API-089 merged.
 - PR type for this branch: `pure-move`
 - Runtime behavior changes: none.
-- Rust code changes: move remaining ECStore method-resolution trait imports
+- Rust code changes: prune raw ECStore object/error facade aliases from outer
-  from compatibility boundaries into direct call sites, and narrow scanner,
+  app/admin/storage compatibility boundaries.
-  heal, and e2e compatibility helpers to local aliases and wrappers.
+- CI/script changes: guard app/admin/storage compatibility boundaries against
-- CI/script changes: tighten the compatibility re-export guard while allowing
+  restoring raw ECStore object/error facade aliases.
-  temporary ECStore method-resolution trait imports at call sites.
+- Docs changes: record the API-090 outer compatibility facade alias cleanup.
-- Docs changes: record the API-089 trait import compatibility cleanup.
 
 ## Phase 0 Tasks
 
@@ -279,6 +278,20 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
   - Verification: RustFS and edge crate compile coverage, compatibility
     re-export residual scan, migration guard, formatting, diff hygiene, Rust
     risk scan, pre-commit quality gate, and three-expert review.
+- [x] `API-090` Prune outer compat object/error facade aliases.
+  - Completed slice: replace app/admin/storage raw ECStore object/error facade
+    aliases with storage-api associated object aliases and local `StorageError`
+    aliases.
+  - Acceptance: app/admin/storage compatibility boundaries no longer refer to
+    `rustfs_ecstore::api::object::{ObjectInfo,ObjectOptions}` or
+    `rustfs_ecstore::api::error::{Error,Result}` while behavior stays
+    unchanged.
+  - Must preserve: lifecycle restore/options, object-lock deletion checks,
+    replication scheduling decisions, admin/storage config error matching, and
+    storage S3 error mapping.
+  - Verification: RustFS compile coverage, residual scan, migration guard,
+    formatting, diff hygiene, Rust risk scan, pre-commit quality gate, and
+    three-expert review.
 - [x] `G-012` Inventory placement and repair invariants.
   - Acceptance:
     [`placement-repair-invariants.md`](placement-repair-invariants.md) records
@@ -3312,14 +3325,24 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
 
 | Expert | Status | Notes |
 |---|---|---|
-| Quality/architecture | passed | API-089 removes ECStore API re-export compatibility from the remaining app/admin/storage/scanner/heal/e2e boundaries while limiting direct imports to method-resolution traits. |
+| Quality/architecture | passed | API-090 replaces raw ECStore object/error facade aliases in outer app/admin/storage compatibility boundaries with storage-api object aliases and local StorageError aliases. |
-| Migration preservation | passed | Scanner, heal, e2e, app, admin, and storage consumers keep non-trait ECStore access behind local aliases, wrappers, or proxy statics with existing behavior preserved. |
+| Migration preservation | passed | Lifecycle, object-lock, replication, admin config, and storage S3 error paths keep the same concrete ECStore contracts through narrower local names. |
-| Testing/verification | passed | Targeted compile coverage, ECStore API re-export residual scan, migration guard, formatting, diff hygiene, Rust risk scan, full pre-commit, and three-expert review passed. |
+| Testing/verification | passed | RustFS compile coverage, outer facade alias residual scan, migration guard, formatting, diff hygiene, Rust risk scan, full pre-commit, and three-expert review passed. |
 
 ## Verification Notes
 
 Passed before push:
 
+- Issue #660 API-090 current slice:
+  - `cargo check -p rustfs`: passed.
+  - `cargo fmt --all --check`: passed.
+  - `git diff --check`: passed.
+  - `bash -n scripts/check_architecture_migration_rules.sh`: passed.
+  - `./scripts/check_architecture_migration_rules.sh`: passed.
+  - Outer app/admin/storage object/error facade alias residual scan: passed.
+  - Rust added-line risk scan on changed Rust files and guard script: passed.
+  - `make pre-commit`: passed.
+
 - Issue #660 API-089 current slice:
   - `cargo check -p rustfs -p rustfs-scanner -p rustfs-heal -p e2e_test`:
     passed.

rustfs/src/admin/storage_compat.rs

@@ -23,15 +23,15 @@ pub(crate) type CollectMetricsOpts = rustfs_ecstore::api::metrics::CollectMetric
 pub(crate) type DiskStat = rustfs_ecstore::api::rebalance::DiskStat;
 pub(crate) type ECStore = rustfs_ecstore::api::storage::ECStore;
 pub(crate) type EndpointServerPools = rustfs_ecstore::api::layout::EndpointServerPools;
-pub(crate) type Error = rustfs_ecstore::api::error::Error;
 pub(crate) type MetricType = rustfs_ecstore::api::metrics::MetricType;
 pub(crate) type PeerRestClient = rustfs_ecstore::api::rpc::PeerRestClient;
 pub(crate) type RebalSaveOpt = rustfs_ecstore::api::rebalance::RebalSaveOpt;
 pub(crate) type RebalanceCleanupWarnings = rustfs_ecstore::api::rebalance::RebalanceCleanupWarnings;
 pub(crate) type RebalanceMeta = rustfs_ecstore::api::rebalance::RebalanceMeta;
 pub(crate) type RebalanceStats = rustfs_ecstore::api::rebalance::RebalanceStats;
-pub(crate) type Result<T> = rustfs_ecstore::api::error::Result<T>;
 pub(crate) type StorageError = rustfs_ecstore::api::error::StorageError;
+pub(crate) type Error = StorageError;
+pub(crate) type Result<T> = core::result::Result<T, Error>;
 pub(crate) type TierConfig = rustfs_ecstore::api::tier::tier_config::TierConfig;
 pub(crate) type TierCreds = rustfs_ecstore::api::tier::tier_admin::TierCreds;
 pub(crate) type TierType = rustfs_ecstore::api::tier::tier_config::TierType;

rustfs/src/app/storage_compat.rs

@@ -20,12 +20,14 @@ pub(crate) type DiskError = rustfs_ecstore::api::disk::error::DiskError;
 pub(crate) type DynReader = rustfs_ecstore::api::rio::DynReader;
 pub(crate) type ECStore = rustfs_ecstore::api::storage::ECStore;
 pub(crate) type EndpointServerPools = rustfs_ecstore::api::layout::EndpointServerPools;
-pub(crate) type Error = rustfs_ecstore::api::error::Error;
 pub(crate) type HashReader = rustfs_ecstore::api::rio::HashReader;
 pub(crate) type ObjectStoreResolver = dyn Fn() -> Option<Arc<ECStore>> + Send + Sync + 'static;
+pub(crate) type ObjectInfo = <ECStore as rustfs_storage_api::ObjectOperations>::ObjectInfo;
+pub(crate) type ObjectOptions = <ECStore as rustfs_storage_api::ObjectOperations>::ObjectOptions;
 pub(crate) type PoolDecommissionInfo = rustfs_ecstore::api::capacity::PoolDecommissionInfo;
 pub(crate) type PoolStatus = rustfs_ecstore::api::capacity::PoolStatus;
 pub(crate) type StorageError = rustfs_ecstore::api::error::StorageError;
+pub(crate) type Error = StorageError;
 pub(crate) type TierConfigMgr = rustfs_ecstore::api::tier::tier::TierConfigMgr;
 pub(crate) type WriteEncryption = rustfs_ecstore::api::rio::WriteEncryption;
 pub(crate) type WritePlan = rustfs_ecstore::api::rio::WritePlan;
@@ -112,7 +114,7 @@ pub(crate) mod lifecycle {
                 .await
         }
 
-        pub(crate) async fn enqueue_transition_immediate(oi: &rustfs_ecstore::api::object::ObjectInfo, src: LcEventSrc) {
+        pub(crate) async fn enqueue_transition_immediate(oi: &super::super::ObjectInfo, src: LcEventSrc) {
             rustfs_ecstore::api::bucket::lifecycle::bucket_lifecycle_ops::enqueue_transition_immediate(oi, src).await;
         }
 
@@ -120,7 +122,7 @@ pub(crate) mod lifecycle {
             version_id: &str,
             bucket: &str,
             object: &str,
-        ) -> Result<rustfs_ecstore::api::object::ObjectOptions, std::io::Error> {
+        ) -> Result<super::super::ObjectOptions, std::io::Error> {
             rustfs_ecstore::api::bucket::lifecycle::bucket_lifecycle_ops::post_restore_opts(version_id, bucket, object).await
         }
 
@@ -318,7 +320,7 @@ pub(crate) mod object_lock {
 
         pub(crate) async fn check_object_lock_for_deletion(
             bucket: &str,
-            obj_info: &rustfs_ecstore::api::object::ObjectInfo,
+            obj_info: &super::super::ObjectInfo,
             bypass_governance: bool,
         ) -> Option<ObjectLockBlockReason> {
             rustfs_ecstore::api::bucket::object_lock::objectlock_sys::check_object_lock_for_deletion(
@@ -359,8 +361,8 @@ pub(crate) mod replication {
     pub(crate) async fn check_replicate_delete(
         bucket: &str,
         dobj: &rustfs_storage_api::ObjectToDelete,
-        oi: &rustfs_ecstore::api::object::ObjectInfo,
+        oi: &super::ObjectInfo,
-        del_opts: &rustfs_ecstore::api::object::ObjectOptions,
+        del_opts: &super::ObjectOptions,
         gerr: Option<String>,
     ) -> ReplicateDecision {
         rustfs_ecstore::api::bucket::replication::check_replicate_delete(bucket, dobj, oi, del_opts, gerr).await
@@ -371,7 +373,7 @@ pub(crate) mod replication {
         user_tags: String,
         status: rustfs_filemeta::ReplicationStatusType,
         op_type: rustfs_filemeta::ReplicationType,
-        opts: rustfs_ecstore::api::object::ObjectOptions,
+        opts: super::ObjectOptions,
     ) -> MustReplicateOptions {
         rustfs_ecstore::api::bucket::replication::get_must_replicate_options(user_defined, user_tags, status, op_type, opts)
     }
@@ -381,7 +383,7 @@ pub(crate) mod replication {
     }
 
     pub(crate) async fn schedule_replication(
-        oi: rustfs_ecstore::api::object::ObjectInfo,
+        oi: super::ObjectInfo,
         store: Arc<super::ECStore>,
         dsc: ReplicateDecision,
         op_type: rustfs_filemeta::ReplicationType,

rustfs/src/storage/storage_compat.rs

@@ -36,7 +36,6 @@ pub(crate) type DiskError = rustfs_ecstore::api::disk::error::DiskError;
 pub(crate) type DiskInfoOptions = rustfs_ecstore::api::disk::DiskInfoOptions;
 pub(crate) type DiskStore = rustfs_ecstore::api::disk::DiskStore;
 pub(crate) type ECStore = rustfs_ecstore::api::storage::ECStore;
-pub(crate) type Error = rustfs_ecstore::api::error::Error;
 pub(crate) type FileInfoVersions = rustfs_ecstore::api::disk::FileInfoVersions;
 pub(crate) type LocalPeerS3Client = rustfs_ecstore::api::rpc::LocalPeerS3Client;
 pub(crate) type MetricType = rustfs_ecstore::api::metrics::MetricType;
@@ -44,8 +43,9 @@ pub(crate) type PolicySys = rustfs_ecstore::api::bucket::policy_sys::PolicySys;
 pub(crate) type ReadMultipleReq = rustfs_ecstore::api::disk::ReadMultipleReq;
 pub(crate) type ReadMultipleResp = rustfs_ecstore::api::disk::ReadMultipleResp;
 pub(crate) type ReadOptions = rustfs_ecstore::api::disk::ReadOptions;
-pub(crate) type Result<T> = rustfs_ecstore::api::error::Result<T>;
 pub(crate) type StorageError = rustfs_ecstore::api::error::StorageError;
+pub(crate) type Error = StorageError;
+pub(crate) type Result<T> = core::result::Result<T, Error>;
 pub(crate) type UpdateMetadataOpts = rustfs_ecstore::api::disk::UpdateMetadataOpts;
 pub(crate) type WalkDirOptions = rustfs_ecstore::api::disk::WalkDirOptions;
 pub(crate) type WriteEncryption = rustfs_ecstore::api::rio::WriteEncryption;

scripts/check_architecture_migration_rules.sh

@@ -86,6 +86,7 @@ RUSTFS_STORAGE_BUCKET_STORAGE_COMPAT_MODULE_HITS_FILE="${TMP_DIR}/rustfs_storage
 RUSTFS_STORAGE_OWNER_COMPAT_REEXPORT_HITS_FILE="${TMP_DIR}/rustfs_storage_owner_compat_reexport_hits.txt"
 RUSTFS_ADMIN_BUCKET_STORAGE_COMPAT_MODULE_HITS_FILE="${TMP_DIR}/rustfs_admin_bucket_storage_compat_module_hits.txt"
 RUSTFS_APP_BUCKET_STORAGE_COMPAT_MODULE_HITS_FILE="${TMP_DIR}/rustfs_app_bucket_storage_compat_module_hits.txt"
+RUSTFS_OUTER_COMPAT_FACADE_ALIAS_HITS_FILE="${TMP_DIR}/rustfs_outer_compat_facade_alias_hits.txt"
 SCANNER_BUCKET_STORAGE_COMPAT_MODULE_HITS_FILE="${TMP_DIR}/scanner_bucket_storage_compat_module_hits.txt"
 NOTIFY_STORAGE_COMPAT_MODULE_HITS_FILE="${TMP_DIR}/notify_storage_compat_module_hits.txt"
 OBS_STORAGE_COMPAT_PASSTHROUGH_HITS_FILE="${TMP_DIR}/obs_storage_compat_passthrough_hits.txt"
@@ -879,6 +880,18 @@ if [[ -s "$RUSTFS_APP_BUCKET_STORAGE_COMPAT_MODULE_HITS_FILE" ]]; then
   report_failure "RustFS app storage compatibility must expose bucket/client/storageclass contracts as explicit aliases: $(paste -sd '; ' "$RUSTFS_APP_BUCKET_STORAGE_COMPAT_MODULE_HITS_FILE")"
 fi
 
+(
+  cd "$ROOT_DIR"
+  rg -n --no-heading 'rustfs_ecstore::api::(object::(ObjectInfo|ObjectOptions)|error::(Error|Result))' \
+    rustfs/src/app/storage_compat.rs \
+    rustfs/src/admin/storage_compat.rs \
+    rustfs/src/storage/storage_compat.rs || true
+) >"$RUSTFS_OUTER_COMPAT_FACADE_ALIAS_HITS_FILE"
+
+if [[ -s "$RUSTFS_OUTER_COMPAT_FACADE_ALIAS_HITS_FILE" ]]; then
+  report_failure "RustFS outer storage compatibility must use storage-api object aliases and local StorageError aliases instead of raw ECStore object/error facade aliases: $(paste -sd '; ' "$RUSTFS_OUTER_COMPAT_FACADE_ALIAS_HITS_FILE")"
+fi
+
 (
   cd "$ROOT_DIR"
   rg -n --no-heading 'pub\(crate\)\s+use rustfs_ecstore::api::bucket::\{[^}]*\b(?:bucket_target_sys|lifecycle|metadata_sys|replication|versioning|versioning_sys)\b[^}]*\}\s*;' \