refactor(storage): use admin API for observability reads (#3335)

Cargo.lock

@@ -9699,6 +9699,7 @@ dependencies = [
  "rustfs-iam",
  "rustfs-io-metrics",
  "rustfs-notify",
+ "rustfs-storage-api",
  "rustfs-utils",
  "serde",
  "sysinfo",

crates/ecstore/src/admin_server_info.rs

@@ -20,7 +20,6 @@ use crate::{
     global::{GLOBAL_BOOT_TIME, GLOBAL_Endpoints, get_global_deployment_id},
     new_object_layer_fn,
     notification_sys::get_global_notification_sys,
-    store_api::StorageAPI,
 };
 
 use crate::data_usage::load_data_usage_cache;
@@ -32,6 +31,7 @@ use rustfs_protos::{
     models::{PingBody, PingBodyBuilder},
     proto_gen::node_service::{PingRequest, PingResponse},
 };
+use rustfs_storage_api::StorageAdminApi;
 use std::{
     collections::{HashMap, HashSet},
     time::{Duration, SystemTime},
@@ -186,7 +186,7 @@ pub async fn get_local_server_property() -> ServerProperties {
     // sensitive.insert(rustfs_config::ENV_RUSTFS_ACCESS_KEY.to_string());
     // sensitive.insert(rustfs_config::ENV_RUSTFS_SECRET_KEY.to_string());
     if let Some(store) = new_object_layer_fn() {
-        let storage_info = store.local_storage_info().await;
+        let storage_info = StorageAdminApi::local_storage_info(store.as_ref()).await;
         props.state = ITEM_ONLINE.to_string();
         props.disks = storage_info.disks;
     } else {
@@ -252,7 +252,7 @@ pub async fn get_server_info(get_pools: bool) -> InfoMessage {
 
         warn!("load_data_usage_from_backend end {:?}", after3 - after2);
 
-        let backend_info = store.clone().backend_info().await;
+        let backend_info = StorageAdminApi::backend_info(store.as_ref()).await;
 
         let after4 = OffsetDateTime::now_utc();
 

crates/ecstore/src/metrics_realtime.rs

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use crate::{admin_server_info::get_local_server_property, new_object_layer_fn, store_api::StorageAPI};
+use crate::{admin_server_info::get_local_server_property, new_object_layer_fn};
 use chrono::Utc;
 use rustfs_common::{GLOBAL_LOCAL_NODE_NAME, GLOBAL_RUSTFS_ADDR, heal_channel::DriveState, metrics::global_metrics};
 use rustfs_io_metrics::internode_metrics::global_internode_metrics;
@@ -22,6 +22,7 @@ use rustfs_madmin::metrics::{
     ScannerPacingPressureSnapshot as MadminScannerPacingPressureSnapshot,
     ScannerSourceCycleSnapshot as MadminScannerSourceCycleSnapshot, TimedAction as MadminTimedAction,
 };
+use rustfs_storage_api::StorageAdminApi;
 use rustfs_utils::os::get_drive_stats;
 use serde::{Deserialize, Serialize};
 use std::collections::{HashMap, HashSet};
@@ -269,7 +270,7 @@ async fn collect_local_disks_metrics(disks: &HashSet<String>) -> HashMap<String,
     };
 
     let mut metrics = HashMap::new();
-    let storage_info = store.local_storage_info().await;
+    let storage_info = StorageAdminApi::local_storage_info(store.as_ref()).await;
     for d in storage_info.disks.iter() {
         if !disks.is_empty() && !disks.contains(&d.endpoint) {
             continue;

crates/ecstore/src/notification_sys.rs

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use crate::StorageAPI;
 use crate::admin_server_info::get_commit_id;
 use crate::error::{Error, Result};
 use crate::global::{GLOBAL_BOOT_TIME, get_global_endpoints};
@@ -26,6 +25,7 @@ use rustfs_madmin::health::{Cpus, MemInfo, OsInfo, Partitions, ProcInfo, SysConf
 use rustfs_madmin::metrics::RealtimeMetrics;
 use rustfs_madmin::net::NetInfo;
 use rustfs_madmin::{ItemState, ServerProperties, StorageInfo};
+use rustfs_storage_api::StorageAdminApi;
 use std::collections::hash_map::DefaultHasher;
 use std::future::Future;
 use std::hash::{Hash, Hasher};
@@ -273,7 +273,10 @@ impl NotificationSys {
         join_all(futures).await
     }
 
-    pub async fn storage_info<S: StorageAPI>(&self, api: &S) -> rustfs_madmin::StorageInfo {
+    pub async fn storage_info<S>(&self, api: &S) -> rustfs_madmin::StorageInfo
+    where
+        S: StorageAdminApi<BackendInfo = rustfs_madmin::BackendInfo, StorageInfo = rustfs_madmin::StorageInfo>,
+    {
         let mut futures = Vec::with_capacity(self.peer_clients.len());
         let endpoints = get_global_endpoints();
         let peer_timeout = Duration::from_secs(5);
@@ -307,14 +310,14 @@ impl NotificationSys {
 
         let mut replies = join_all(futures).await;
 
-        replies.push(Some(api.local_storage_info().await));
+        replies.push(Some(StorageAdminApi::local_storage_info(api).await));
 
         let mut disks = Vec::new();
         for info in replies.into_iter().flatten() {
             disks.extend(info.disks);
         }
 
-        let backend = api.backend_info().await;
+        let backend = StorageAdminApi::backend_info(api).await;
         rustfs_madmin::StorageInfo { disks, backend }
     }
 

crates/obs/Cargo.toml

@@ -41,6 +41,7 @@ rustfs-ecstore = { workspace = true }
 rustfs-iam = { workspace = true }
 rustfs-io-metrics = { workspace = true }
 rustfs-notify = { workspace = true }
+rustfs-storage-api = { workspace = true }
 rustfs-utils = { workspace = true, features = ["ip"] }
 chrono = { workspace = true }
 flate2 = { workspace = true }

crates/obs/src/metrics/stats_collector.rs

@@ -34,12 +34,13 @@ use rustfs_ecstore::bucket::metadata_sys::get_quota_config;
 use rustfs_ecstore::bucket::replication::GLOBAL_REPLICATION_STATS;
 use rustfs_ecstore::data_usage::load_data_usage_from_backend;
 use rustfs_ecstore::global::get_global_bucket_monitor;
+use rustfs_ecstore::new_object_layer_fn;
 use rustfs_ecstore::pools::{get_total_usable_capacity, get_total_usable_capacity_free};
 use rustfs_ecstore::store_api::{BucketOperations, BucketOptions};
-use rustfs_ecstore::{StorageAPI, new_object_layer_fn};
 use rustfs_iam::{get_global_iam_sys, oidc::oidc_plugin_authn_metrics_snapshot};
 use rustfs_io_metrics::internode_metrics::global_internode_metrics;
 use rustfs_io_metrics::{ProcessStatusSnapshot, snapshot_process_resource_and_system};
+use rustfs_storage_api::StorageAdminApi;
 use std::collections::HashMap;
 use std::time::Duration;
 use sysinfo::{Networks, System};
@@ -151,7 +152,7 @@ pub async fn collect_cluster_and_health_stats() -> (ClusterStats, ClusterHealthS
         return (ClusterStats::default(), ClusterHealthStats::default());
     };
 
-    let storage_info = store.storage_info().await;
+    let storage_info = StorageAdminApi::storage_info(store.as_ref()).await;
     let raw_capacity: u64 = storage_info.disks.iter().map(|d| d.total_space).sum();
     let used: u64 = storage_info.disks.iter().map(|d| d.used_space).sum();
     let usable_capacity = get_total_usable_capacity(&storage_info.disks, &storage_info) as u64;
@@ -525,7 +526,7 @@ pub async fn collect_disk_and_system_drive_stats() -> (Vec<DiskStats>, Vec<Drive
         return (Vec::new(), Vec::new(), DriveCountStats::default());
     };
 
-    let storage_info = store.storage_info().await;
+    let storage_info = StorageAdminApi::storage_info(store.as_ref()).await;
     let disk_stats = storage_info
         .disks
         .iter()
@@ -710,7 +711,7 @@ pub fn collect_internode_network_stats() -> Option<NetworkStats> {
 /// Collect cluster config metrics from backend parity configuration.
 pub async fn collect_cluster_config_stats() -> Option<ClusterConfigStats> {
     let store = new_object_layer_fn()?;
-    let backend = store.backend_info().await;
+    let backend = StorageAdminApi::backend_info(store.as_ref()).await;
 
     Some(ClusterConfigStats {
         rrs_parity: backend.rr_sc_parity.unwrap_or_default() as u32,
@@ -724,8 +725,8 @@ pub async fn collect_erasure_set_stats() -> Vec<ErasureSetStats> {
         return Vec::new();
     };
 
-    let storage_info = store.storage_info().await;
-    let backend = store.backend_info().await;
+    let storage_info = StorageAdminApi::storage_info(store.as_ref()).await;
+    let backend = StorageAdminApi::backend_info(store.as_ref()).await;
     let mut grouped: HashMap<(usize, usize), ErasureSetStats> = HashMap::new();
 
     for disk in &storage_info.disks {

docs/architecture/migration-progress.md

@@ -5,15 +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-admin-readiness-storage-admin`
-- Baseline: `origin/main` at `b48d7b1fa514e5da274d652a0cb7f282521f46c0`
+- Branch: `overtrue/arch-admin-observability-storage-reads`
+- Baseline: `origin/main` at `8ae0cad6671562c0fffe56a7f288cd97fb87309d`
 - PR type for this branch: `consumer-migration`
 - Runtime behavior changes: none.
-- Rust code changes: migrate grouped admin/readiness read-side consumers from
-  old `StorageAPI::{backend_info, storage_info}` trait imports to the
-  inventory-facing `StorageAdminApi` contract.
+- Rust code changes: migrate grouped observability, RPC health, server-info,
+  realtime metrics, and notification read-side consumers from old
+  `StorageAPI::{backend_info, storage_info, local_storage_info}` trait imports
+  to the inventory-facing `StorageAdminApi` contract.
 - CI/script changes: none.
-- Docs changes: record API-007 grouped consumer-migration context,
+- Docs changes: record API-007 expanded read-side consumer-migration context,
   verification evidence, and expert review outcomes.
 
 ## Phase 0 Tasks
@@ -201,18 +202,24 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
   - Completed third slice: `rustfs/rustfs#3333` migrated
     `DefaultAdminUsecase` storage-info reads to
     `StorageAdminApi::storage_info`.
-  - Current branch slice: migrate grouped read-side admin/readiness consumers:
-    account-info `backend_info`, rebalance status `storage_info`, and runtime
-    readiness `storage_info`.
-  - Acceptance: account-info, rebalance status, and readiness no longer import
-    old `StorageAPI` only to read admin storage information.
+  - Completed fourth slice: `rustfs/rustfs#3334` migrated account-info
+    `backend_info`, rebalance status `storage_info`, and runtime readiness
+    `storage_info`.
+  - Current branch slice: migrate grouped read-side observability and health
+    consumers: obs cluster/disk/config/erasure-set metrics, RPC local storage
+    info response construction, ECStore server-info local disk/backend reads,
+    realtime disk metrics, and notification storage-info aggregation.
+  - Acceptance: these consumers no longer import old `StorageAPI` only to read
+    admin storage information; peer RPC client calls remain unchanged.
   - Must preserve: old `StorageAPI` trait shape, `StorageAPI::get_disks`
-    behavior, account-info response shape, rebalance used-space aggregation,
-    readiness degraded-state semantics, RPC `local_storage_info`, heal/scanner
-    consumers, and storage hot paths.
+    behavior, obs metric values, RPC msgpack map encoding and response shape,
+    server-info shape, realtime metric shape, notification peer
+    aggregation/cache fallback, heal/scanner consumers, object paths,
+    replication/config persistence, and storage hot paths.
   - Risk defense: group only read-side callers that delegate to the existing
-    ECStore admin info implementation; do not migrate RPC `local_storage_info`,
-    heal, scanner, observability, or storage hot-path consumers in this PR.
+    ECStore admin info implementation; do not migrate object APIs, scanner,
+    heal, replication, config persistence, or storage implementation internals
+    in this PR.
 
 ## Phase 8 Background Controller Tasks
 
@@ -256,39 +263,48 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
 
 | Expert | Status | Notes |
 |---|---|---|
-| Quality/architecture | pass | Confirmed the diff stays limited to three read-side consumers and migration notes, with no manifest, ECStore, storage-api, RPC, heal, scanner, observability, or hot-path scope creep. |
-| Migration preservation | pass | Confirmed the new and old ECStore trait paths still delegate to the same backend/storage-info handlers, while account-info response construction, rebalance aggregation, and readiness cache/degraded-state logic remain unchanged. |
-| Testing/verification | pass | Confirmed touched-consumer focused tests, compile checks, migration guards, diff hygiene, and full pre-commit evidence are sufficient; no missing success-path integration test is a blocker for this call-path migration. |
+| Quality/architecture | pass | Confirmed the diff stays limited to read-side consumer migration and the `rustfs-obs` contract dependency, with no object, scanner, heal, replication, config persistence, or storage hot-path scope creep. |
+| Migration preservation | pass | Confirmed obs metric calculations, RPC response encoding, server-info shape, realtime disk metric shape, notification peer aggregation/timeout/cache fallback, and peer REST calls remain unchanged. |
+| Testing/verification | pass | Confirmed focused tests, joint compile check, migration guards, diff hygiene, and added-line Rust quality scan are sufficient for this equivalent trait-entry migration while skipping full pre-commit under the current instruction. |
 
 ## Verification Notes
 
 Passed:
+- `cargo fmt --all`.
 - `cargo fmt --all --check`.
-- `cargo check -p rustfs --lib`.
-- `cargo test -p rustfs admin::handlers::account_info --lib`; 3 passed.
-- `cargo test -p rustfs admin::handlers::rebalance --lib`; 19 passed.
-- `cargo test -p rustfs server::readiness --lib`; 13 passed.
-- `cargo check -p rustfs-storage-api -p rustfs-ecstore -p rustfs --lib`.
+- `cargo check -p rustfs-storage-api -p rustfs-ecstore -p rustfs-obs -p rustfs --lib`.
+- `cargo test -p rustfs-obs stats_collector --lib`; 14 passed.
+- `cargo test -p rustfs-ecstore admin_server_info --lib`; 1 passed.
+- `cargo test -p rustfs-ecstore metrics_realtime --lib`; 5 passed.
+- `cargo test -p rustfs-ecstore notification_sys --lib`; 17 passed.
+- `cargo test -p rustfs local_storage_info_rpc_payload_uses_msgpack_map_encoding --lib`; 1 passed.
 - `./scripts/check_architecture_migration_rules.sh`.
 - `./scripts/check_layer_dependencies.sh`.
 - `./scripts/check_metrics_migration_refs.sh`.
 - `./scripts/check_unsafe_code_allowances.sh`.
 - `git diff --check`.
-- `make NUM_CORES=1 pre-commit`.
+- Rust code-quality scan on changed `.rs` files, plus added-line scan for
+  unwrap/expect, numeric casts, `Result<_, String>`, `Box<dyn Error>`,
+  println/eprintln, and `Ordering::Relaxed`.
 
 Notes:
-- This branch relies on the existing direct `rustfs` dependency on
-  `rustfs-storage-api` from earlier API-007 slices.
-- No ECStore handler, old `StorageAPI` trait, RPC consumer, heal/scanner
-  consumer, observability consumer, or storage hot path is changed.
-- Full pre-commit passed with nextest `5757 passed, 111 skipped`; workspace
-  doctests passed.
+- This branch adds a direct `rustfs-obs` dependency on the existing
+  `rustfs-storage-api` workspace contract crate.
+- Full pre-commit was intentionally skipped because the focused tests and guards
+  above passed, per the current migration instruction to increase PR granularity.
+- The broad changed-file quality scan reports pre-existing test unwrap/expect
+  and pre-existing `admin_server_info.rs` println/eprintln; the added-line scan
+  found no new risky code patterns.
+- No ECStore handler implementation, old `StorageAPI` trait, peer RPC client,
+  heal/scanner consumer, object path, replication/config persistence path, or
+  storage hot path is changed.
 - No temporary compatibility shim was added.
 
 ## Handoff Notes
 
-- Keep this API-007 slice as a grouped read-side `consumer-migration` PR.
-- Do not migrate RPC `local_storage_info`, heal, scanner, observability, or
+- Keep this API-007 slice as a grouped observability/health/server-info
+  read-side `consumer-migration` PR.
+- Do not migrate object APIs, scanner, heal, replication, config persistence, or
   storage hot-path consumers in this PR.
 - Do not remove or route around `StorageAPI::get_disks` in this PR.
 - Do not make the old `StorageAPI` trait inherit `StorageAdminApi` in this PR.

rustfs/src/storage/rpc/health.rs

@@ -14,6 +14,7 @@
 
 use super::*;
 use crate::storage::rpc::encode_msgpack_map;
+use rustfs_storage_api::StorageAdminApi;
 
 impl NodeService {
     pub(super) async fn handle_get_proc_info(
@@ -221,7 +222,7 @@ impl NodeService {
             }));
         };
 
-        let info = store.local_storage_info().await;
+        let info = StorageAdminApi::local_storage_info(store.as_ref()).await;
         match encode_msgpack_map(&info) {
             Ok(buf) => Ok(Response::new(LocalStorageInfoResponse {
                 success: true,

rustfs/src/storage/rpc/node_service.rs

@@ -37,7 +37,7 @@ use rustfs_ecstore::{
         SERVICE_SIGNAL_RELOAD_DYNAMIC,
     },
     store::{all_local_disk_path, find_local_disk_by_ref},
-    store_api::{BucketOptions, DeleteBucketOptions, MakeBucketOptions, StorageAPI},
+    store_api::{BucketOptions, DeleteBucketOptions, MakeBucketOptions},
 };
 use rustfs_filemeta::{FileInfo, MetacacheReader};
 use rustfs_iam::{get_global_iam_sys, store::UserType};