refactor: centralize startup protocol bootstrap (#3450)

docs/architecture/migration-progress.md

@@ -5,18 +5,17 @@ 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-startup-service-bootstrap`
-- Baseline: `origin/main` at `b49057c8e3e0b1a0ed828912806ee67b49e404c4`
+- Branch: `overtrue/arch-startup-subsystems-bootstrap`
+- Baseline: `origin/main` at `949939137066435e590c8bd0f029ed1500e0e1cd`
 - PR type for this branch: `pure-move`
-- Runtime behavior changes: no external behavior change expected; binary startup
-  still treats notification initialization failure as fatal, while embedded
-  startup still treats audit and notification failures as non-fatal warnings.
-- Rust code changes: centralize event notifier, audit startup, and notification
-  system bootstrap in `startup_services` helpers with caller-owned
-  logging/error policy, then use those helpers from binary and embedded
+- Runtime behavior changes: no external behavior change expected; FTP, FTPS,
+  WebDAV, and SFTP startup still honors compile features and env-driven
+  enable/disable behavior, startup failure mapping, and shutdown handle flow.
+- Rust code changes: centralize protocol sidecar bootstrap in
+  `startup_protocols::init_protocol_shutdown_senders` and use it from binary
   startup.
 - CI/script changes: none.
-- Docs changes: record `R-010` startup service bootstrap wrapper progress and
+- Docs changes: record `R-011` startup protocol bootstrap wrapper progress and
   verification.
 
 ## Phase 0 Tasks
@@ -578,6 +577,19 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
   - Verification: focused startup service tests, binary/lib compile checks,
     formatting, migration guards, Rust risk scan, and pre-commit quality gate.
 
+- [x] `R-011` Centralize startup protocol sidecar bootstrap.
+  - Do: move FTP, FTPS, WebDAV, and SFTP startup orchestration behind
+    `startup_protocols::init_protocol_shutdown_senders`.
+  - Acceptance: feature-gated protocols still return `None` when not compiled
+    or enabled, started/disabled/failure logging preserves protocol and state
+    fields, and startup failures still abort binary startup with the same
+    `Error::other` mapping.
+  - Must preserve: protocol feature gates, env-driven enable/disable behavior,
+    startup log event/state/protocol values, shutdown handle ownership, and
+    existing shutdown ordering.
+  - Verification: focused startup protocol tests, binary/lib compile checks,
+    formatting, migration guards, Rust risk scan, and pre-commit quality gate.
+
 ## Next PRs
 
 1. `pure-move`: continue extracting startup boot wrappers in larger slices while
@@ -589,37 +601,39 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
 
 | Expert | Status | Notes |
 |---|---|---|
-| Quality/architecture | passed | Pure-move slice centralizes optional startup service bootstrap while keeping caller-specific logging and error policy at the binary and embedded boundaries. |
-| Migration preservation | passed | Binary keeps notification init fatal, embedded keeps audit and notification failures warn-and-continue, and event notifier still starts before audit. |
-| Testing/verification | passed | Focused startup service tests, compile checks, formatting, migration/layer guards, Rust risk scan, branch freshness check, and full `make pre-commit` passed. |
+| Quality/architecture | passed | Pure-move slice centralizes protocol sidecar startup while keeping the binary boundary in charge of shutdown wiring. |
+| Migration preservation | passed | Protocol feature gates, env-driven disabled handling, startup log event/state/protocol fields, and `Error::other` failure mapping are preserved. |
+| Testing/verification | passed | Focused startup protocol tests, compile checks, formatting, migration/layer guards, Rust risk scan, branch freshness check, and full `make pre-commit` passed. |
 
 ## Verification Notes
 
-Passed on `b49057c8e3e0b1a0ed828912806ee67b49e404c4`:
+Passed on `949939137066435e590c8bd0f029ed1500e0e1cd`:
 
-- `cargo test -p rustfs startup_services --no-fail-fast`.
-- `cargo check -p rustfs --bin rustfs`.
 - `cargo check -p rustfs --lib`.
+- `cargo check -p rustfs --bin rustfs`.
+- `cargo test -p rustfs startup_protocols --no-fail-fast`.
 - `cargo fmt --all --check`.
 - `git diff --check`.
 - `./scripts/check_architecture_migration_rules.sh`.
 - `./scripts/check_layer_dependencies.sh`.
 - `git rev-list --left-right --count HEAD...origin/main` returned `0 0`.
-- Rust risk scan for changed Rust files: full-file matches were existing docs
-  examples, existing startup error output, and existing startup imports; added
-  lines introduced no unwrap/expect, numeric cast, string error, boxed error,
-  print macro, relaxed-ordering, or unsafe match.
-- `make pre-commit`: all checks passed, including nextest with 5969 passed and
+- Rust risk scan for changed Rust files: the only added-line match is the
+  `Box<dyn Error + Send + Sync>` type required by existing protocol init
+  signatures; full-file matches were existing docs examples and existing binary
+  startup error output.
+- `make pre-commit`: all checks passed, including nextest with 5971 passed and
   111 skipped, plus doctests.
 
 Notes:
 
-- This slice centralizes startup optional service bootstrap without moving
-  logging or error-policy ownership out of binary and embedded startup.
-- Binary and embedded keep their existing notification failure semantics.
+- This slice centralizes startup protocol sidecar bootstrap without changing
+  startup ordering or shutdown handle ownership.
+- Protocol logging keeps the existing event, subsystem, protocol, and state
+  values.
 
 ## Handoff Notes
 
-- R-010 is complete.
+- R-011 is complete.
 - Next startup slices can be larger pure moves, but must keep startup ordering,
-  fatal/non-fatal boundaries, and readiness ownership explicit in tests.
+  fatal/non-fatal boundaries, shutdown ownership, and readiness ownership
+  explicit in tests.

rustfs/src/lib.rs

@@ -69,6 +69,7 @@ pub mod protocols;
 pub mod server;
 pub mod startup_fs_guard;
 pub mod startup_iam;
+pub mod startup_protocols;
 pub mod startup_services;
 pub mod storage;
 pub(crate) mod table_catalog;

rustfs/src/main.rs

@@ -17,15 +17,6 @@ use rustfs::init::{
     add_bucket_notification_configuration, init_buffer_profile_system, init_kms_system, init_update_check, print_server_info,
 };
 
-#[cfg(feature = "ftps")]
-use rustfs::init::{init_ftp_system, init_ftps_system};
-
-#[cfg(feature = "webdav")]
-use rustfs::init::init_webdav_system;
-
-#[cfg(feature = "sftp")]
-use rustfs::init::init_sftp_system;
-
 use futures_util::future::join_all;
 use rustfs::capacity::capacity_integration::init_capacity_management;
 use rustfs::license::{init_license, license_status};
@@ -35,6 +26,7 @@ use rustfs::server::{
 };
 use rustfs::startup_fs_guard::enforce_unsupported_fs_policy;
 use rustfs::startup_iam::{bootstrap_or_defer_iam_init, publish_ready_for_iam_bootstrap};
+use rustfs::startup_protocols::{ProtocolShutdownSenders, init_protocol_shutdown_senders};
 use rustfs_common::{GlobalReadiness, SystemStage, set_global_addr};
 use rustfs_credentials::init_global_action_credentials;
 use rustfs_ecstore::store::init_lock_clients;
@@ -606,173 +598,7 @@ async fn run(config: rustfs::config::Config) -> Result<()> {
     // Initialize KMS system if enabled
     init_kms_system(&config).await?;
 
-    // Initialize FTP system if enabled
-    #[cfg(feature = "ftps")]
-    let ftp_shutdown_tx = match init_ftp_system().await {
-        Ok(Some(tx)) => {
-            debug!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "ftp",
-                state = "started",
-                "Protocol runtime started"
-            );
-            Some(tx)
-        }
-        Ok(None) => {
-            info!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "ftp",
-                state = "disabled",
-                "Protocol runtime disabled"
-            );
-            None
-        }
-        Err(e) => {
-            error!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "ftp",
-                state = "initialization_failed",
-                error = %e,
-                "Protocol runtime initialization failed"
-            );
-            return Err(Error::other(e));
-        }
-    };
-
-    #[cfg(not(feature = "ftps"))]
-    let ftp_shutdown_tx: Option<ShutdownHandle> = None;
-
-    // Initialize FTPS system if enabled
-    #[cfg(feature = "ftps")]
-    let ftps_shutdown_tx = match init_ftps_system().await {
-        Ok(Some(tx)) => {
-            debug!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "ftps",
-                state = "started",
-                "Protocol runtime started"
-            );
-            Some(tx)
-        }
-        Ok(None) => {
-            info!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "ftps",
-                state = "disabled",
-                "Protocol runtime disabled"
-            );
-            None
-        }
-        Err(e) => {
-            error!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "ftps",
-                state = "initialization_failed",
-                error = %e,
-                "Protocol runtime initialization failed"
-            );
-            return Err(Error::other(e));
-        }
-    };
-
-    #[cfg(not(feature = "ftps"))]
-    let ftps_shutdown_tx: Option<ShutdownHandle> = None;
-
-    // Initialize WebDAV system if enabled
-    #[cfg(feature = "webdav")]
-    let webdav_shutdown_tx = match init_webdav_system().await {
-        Ok(Some(tx)) => {
-            debug!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "webdav",
-                state = "started",
-                "Protocol runtime started"
-            );
-            Some(tx)
-        }
-        Ok(None) => {
-            info!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "webdav",
-                state = "disabled",
-                "Protocol runtime disabled"
-            );
-            None
-        }
-        Err(e) => {
-            error!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "webdav",
-                state = "initialization_failed",
-                error = %e,
-                "Protocol runtime initialization failed"
-            );
-            return Err(Error::other(e));
-        }
-    };
-
-    #[cfg(not(feature = "webdav"))]
-    let webdav_shutdown_tx: Option<ShutdownHandle> = None;
-
-    // Initialize SFTP system if enabled
-    #[cfg(feature = "sftp")]
-    let sftp_shutdown_tx = match init_sftp_system().await {
-        Ok(Some(tx)) => {
-            debug!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "sftp",
-                state = "started",
-                "Protocol runtime started"
-            );
-            Some(tx)
-        }
-        Ok(None) => {
-            info!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "sftp",
-                state = "disabled",
-                "Protocol runtime disabled"
-            );
-            None
-        }
-        Err(e) => {
-            error!(
-                event = EVENT_PROTOCOL_SYSTEM_STATE,
-                component = LOG_COMPONENT_MAIN,
-                subsystem = LOG_SUBSYSTEM_STARTUP,
-                protocol = "sftp",
-                state = "initialization_failed",
-                error = %e,
-                "Protocol runtime initialization failed"
-            );
-            return Err(Error::other(e));
-        }
-    };
-
-    #[cfg(not(feature = "sftp"))]
-    let sftp_shutdown_tx: Option<ShutdownHandle> = None;
+    let protocol_shutdowns = init_protocol_shutdown_senders().await?;
 
     // Initialize buffer profiling system
     init_buffer_profile_system(&config);
@@ -979,12 +805,7 @@ async fn run(config: rustfs::config::Config) -> Result<()> {
         shutdown_signal,
         s3_shutdown_tx,
         console_shutdown_tx,
-        ProtocolShutdownSenders {
-            ftp: ftp_shutdown_tx,
-            ftps: ftps_shutdown_tx,
-            webdav: webdav_shutdown_tx,
-            sftp: sftp_shutdown_tx,
-        },
+        protocol_shutdowns,
         ctx.clone(),
     )
     .await;
@@ -1027,15 +848,6 @@ fn log_external_prefix_compat_report(report: &ExternalEnvCompatReport) {
     }
 }
 
-/// Shutdown channels for every protocol server. None means the protocol was
-/// disabled at startup.
-struct ProtocolShutdownSenders {
-    ftp: Option<ShutdownHandle>,
-    ftps: Option<ShutdownHandle>,
-    webdav: Option<ShutdownHandle>,
-    sftp: Option<ShutdownHandle>,
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 enum BackgroundShutdownStep {
     DataScanner,

rustfs/src/startup_protocols.rs

@@ -0,0 +1,153 @@
+// Copyright 2024 RustFS Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#[cfg(feature = "sftp")]
+use crate::init::init_sftp_system;
+#[cfg(feature = "webdav")]
+use crate::init::init_webdav_system;
+#[cfg(feature = "ftps")]
+use crate::init::{init_ftp_system, init_ftps_system};
+use crate::server::ShutdownHandle;
+use std::future::Future;
+use std::io::{Error, Result};
+use tracing::{debug, error, info};
+
+const LOG_COMPONENT_MAIN: &str = "main";
+const LOG_SUBSYSTEM_STARTUP: &str = "startup";
+const EVENT_PROTOCOL_SYSTEM_STATE: &str = "protocol_system_state";
+
+type ProtocolInitResult = std::result::Result<Option<ShutdownHandle>, Box<dyn std::error::Error + Send + Sync>>;
+
+/// Shutdown channels for every protocol server. None means the protocol was
+/// disabled at startup or not compiled in.
+pub struct ProtocolShutdownSenders {
+    pub ftp: Option<ShutdownHandle>,
+    pub ftps: Option<ShutdownHandle>,
+    pub webdav: Option<ShutdownHandle>,
+    pub sftp: Option<ShutdownHandle>,
+}
+
+pub async fn init_protocol_shutdown_senders() -> Result<ProtocolShutdownSenders> {
+    Ok(ProtocolShutdownSenders {
+        ftp: init_ftp_protocol().await?,
+        ftps: init_ftps_protocol().await?,
+        webdav: init_webdav_protocol().await?,
+        sftp: init_sftp_protocol().await?,
+    })
+}
+
+#[cfg(feature = "ftps")]
+async fn init_ftp_protocol() -> Result<Option<ShutdownHandle>> {
+    init_protocol("ftp", init_ftp_system).await
+}
+
+#[cfg(not(feature = "ftps"))]
+async fn init_ftp_protocol() -> Result<Option<ShutdownHandle>> {
+    Ok(None)
+}
+
+#[cfg(feature = "ftps")]
+async fn init_ftps_protocol() -> Result<Option<ShutdownHandle>> {
+    init_protocol("ftps", init_ftps_system).await
+}
+
+#[cfg(not(feature = "ftps"))]
+async fn init_ftps_protocol() -> Result<Option<ShutdownHandle>> {
+    Ok(None)
+}
+
+#[cfg(feature = "webdav")]
+async fn init_webdav_protocol() -> Result<Option<ShutdownHandle>> {
+    init_protocol("webdav", init_webdav_system).await
+}
+
+#[cfg(not(feature = "webdav"))]
+async fn init_webdav_protocol() -> Result<Option<ShutdownHandle>> {
+    Ok(None)
+}
+
+#[cfg(feature = "sftp")]
+async fn init_sftp_protocol() -> Result<Option<ShutdownHandle>> {
+    init_protocol("sftp", init_sftp_system).await
+}
+
+#[cfg(not(feature = "sftp"))]
+async fn init_sftp_protocol() -> Result<Option<ShutdownHandle>> {
+    Ok(None)
+}
+
+async fn init_protocol<InitFn, InitFuture>(protocol: &'static str, init: InitFn) -> Result<Option<ShutdownHandle>>
+where
+    InitFn: FnOnce() -> InitFuture,
+    InitFuture: Future<Output = ProtocolInitResult>,
+{
+    match init().await {
+        Ok(Some(tx)) => {
+            debug!(
+                event = EVENT_PROTOCOL_SYSTEM_STATE,
+                component = LOG_COMPONENT_MAIN,
+                subsystem = LOG_SUBSYSTEM_STARTUP,
+                protocol = protocol,
+                state = "started",
+                "Protocol runtime started"
+            );
+            Ok(Some(tx))
+        }
+        Ok(None) => {
+            info!(
+                event = EVENT_PROTOCOL_SYSTEM_STATE,
+                component = LOG_COMPONENT_MAIN,
+                subsystem = LOG_SUBSYSTEM_STARTUP,
+                protocol = protocol,
+                state = "disabled",
+                "Protocol runtime disabled"
+            );
+            Ok(None)
+        }
+        Err(err) => {
+            error!(
+                event = EVENT_PROTOCOL_SYSTEM_STATE,
+                component = LOG_COMPONENT_MAIN,
+                subsystem = LOG_SUBSYSTEM_STARTUP,
+                protocol = protocol,
+                state = "initialization_failed",
+                error = %err,
+                "Protocol runtime initialization failed"
+            );
+            Err(Error::other(err))
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::init_protocol;
+
+    #[tokio::test]
+    async fn init_protocol_returns_none_when_disabled() {
+        let shutdown = init_protocol("test", || async { Ok(None) }).await;
+
+        assert!(matches!(shutdown, Ok(None)));
+    }
+
+    #[tokio::test]
+    async fn init_protocol_maps_startup_error() {
+        let shutdown = init_protocol("test", || async {
+            Err(Box::<dyn std::error::Error + Send + Sync>::from("startup failed"))
+        })
+        .await;
+
+        assert!(shutdown.is_err());
+    }
+}