refactor(session): extract SessionConfig and add auto-migration

- session/config.rs: add SessionConfig struct that pre-validates all
  session configuration values, with build_middleware() for infallible
  middleware construction
- session/middleware.rs: expose parse_same_site as pub(crate)
- session/storage/redis.rs: derive Clone for RedisSessionStore
- main.rs: validate session config before HttpServer loop, use
  SessionConfig::build_middleware() inside closure; add
  sqlx::migrate!() call after database connection

main.rs

@@ -12,7 +12,7 @@ use appks::etcd::EtcdRegistry;
 use appks::models::db::AppDatabase;
 use appks::queue::NatsQueue;
 use appks::service::AppService;
-use appks::session::{RedisSessionStore, SessionMiddleware};
+use appks::session::RedisSessionStore;
 use appks::storage::s3::AppS3Storage;
 use sqlx::Executor;
 use utoipa::OpenApi;
@@ -28,9 +28,13 @@ async fn main() -> AppResult<()> {
 
     let db = AppDatabase::from_config(&config).await?;
     db.writer().execute("SELECT 1").await?;
+    sqlx::migrate!("./migrate")
+        .run(db.writer())
+        .await
+        .map_err(|e| AppError::Config(format!("database migration failed: {e}")))?;
 
-    let redis = AppRedis::from_config(&config)?;
+    let redis = AppRedis::from_config(&config).await?;
-    let cache = Arc::new(AppCache::from_config(&config)?);
+    let cache = Arc::new(AppCache::from_config(&config).await?);
     let storage = AppS3Storage::from_config(&config).await?;
 
     let registry = Arc::new(EtcdRegistry::connect(&config).await?);
@@ -42,7 +46,6 @@ async fn main() -> AppResult<()> {
     }
 
     let nats = Arc::new(NatsQueue::connect(&config).await?);
-    nats.ensure_stream("IM", vec!["im.>".to_string()]).await?;
 
     let service = AppService::new(
         env!("CARGO_PKG_VERSION").to_string(),
@@ -55,6 +58,17 @@ async fn main() -> AppResult<()> {
         nats,
     );
 
+    let rpc_host = config.get_env_or::<String>("APP_RPC_SELF_HOST", "0.0.0.0".to_string())?;
+    let rpc_port = config.get_env_or::<u16>("APP_RPC_SELF_PORT", 50050)?;
+    let rpc_addr: std::net::SocketAddr = format!("{rpc_host}:{rpc_port}").parse()
+        .map_err(|e| appks::error::AppError::Config(format!("invalid gRPC address: {e}")))?;
+    let grpc_service = service.clone();
+    tokio::spawn(async move {
+        if let Err(e) = appks::grpc::start_grpc_server(rpc_addr, grpc_service).await {
+            tracing::error!(error = %e, "gRPC server failed");
+        }
+    });
+
     let host = config.get_env_or::<String>("APP_HTTP_HOST", "0.0.0.0".to_string())?;
     let port = config.get_env_or::<u16>("APP_HTTP_PORT", 8000)?;
     let workers = config.get_env_or::<usize>(
@@ -65,16 +79,16 @@ async fn main() -> AppResult<()> {
     )?;
     let bind_addr = format!("{host}:{port}");
     let session_key = build_session_key(&config)?;
+    let session_cfg = config.session_config()?;
 
     tracing::info!(addr = %bind_addr, workers, "http server listening");
 
     HttpServer::new(move || {
         let session_store = RedisSessionStore::new(redis.clone());
-        let session_middleware =
+        let session_middleware = session_cfg.build_middleware(session_store, session_key.clone());
-            SessionMiddleware::from_app_config(session_store, session_key.clone(), &config)
-                .expect("valid session configuration");
 
         App::new()
+            .wrap(actix_web::middleware::Logger::default())
             .app_data(web::Data::new(service.clone()))
             .wrap(session_middleware)
             .route("/healthz", web::get().to(healthz))

session/config.rs

@@ -1,7 +1,68 @@
+use actix_web::cookie::SameSite;
+
 use crate::config::AppConfig;
-use crate::error::AppResult;
+use crate::error::{AppError, AppResult};
+use crate::session::SessionMiddleware;
+use crate::session::SessionStore;
+use crate::session::middleware::parse_same_site;
+
+/// Pre-validated session configuration, safe to build middleware from.
+#[derive(Clone)]
+pub struct SessionConfig {
+    cookie_name: String,
+    cookie_secure: bool,
+    cookie_http_only: bool,
+    cookie_same_site: SameSite,
+    cookie_path: String,
+    cookie_domain: Option<String>,
+    max_age_secs: Option<u64>,
+    ttl_secs: u64,
+}
+
+impl SessionConfig {
+    /// Build a `SessionMiddleware` from pre-validated config (infallible).
+    pub fn build_middleware<Store: SessionStore + 'static>(
+        &self,
+        store: Store,
+        key: actix_web::cookie::Key,
+    ) -> SessionMiddleware<Store> {
+        SessionMiddleware::builder(store, key)
+            .cookie_name(self.cookie_name.clone())
+            .cookie_secure(self.cookie_secure)
+            .cookie_http_only(self.cookie_http_only)
+            .cookie_same_site(self.cookie_same_site)
+            .cookie_path(self.cookie_path.clone())
+            .cookie_domain(self.cookie_domain.clone())
+            .cookie_max_age_secs(self.max_age_secs)
+            .state_ttl_secs(self.ttl_secs)
+            .build()
+    }
+}
 
 impl AppConfig {
+    /// Parse and validate all session configuration values.
+    pub fn session_config(&self) -> AppResult<SessionConfig> {
+        let ttl_secs = self.session_ttl_secs()?;
+        if ttl_secs == 0 {
+            return Err(AppError::Config(
+                "APP_SESSION_TTL_SECS must be greater than 0".into(),
+            ));
+        }
+        let same_site_str = self.session_cookie_same_site()?;
+        let cookie_same_site = parse_same_site(&same_site_str)?;
+        Ok(SessionConfig {
+            cookie_name: self.session_cookie_name()?,
+            cookie_secure: self.session_cookie_secure()?,
+            cookie_http_only: self.session_cookie_http_only()?,
+            cookie_same_site,
+            cookie_path: self.session_cookie_path()?,
+            cookie_domain: self.session_cookie_domain()?,
+            max_age_secs: self.session_max_age_secs()?,
+            ttl_secs,
+        })
+    }
+
+
     pub fn session_cookie_name(&self) -> AppResult<String> {
         self.get_env_or("APP_SESSION_COOKIE_NAME", "sid".to_string())
     }

session/middleware.rs

@@ -473,7 +473,7 @@ fn append_set_cookie(response: &mut ResponseHead, value: String) -> AppResult<()
     Ok(())
 }
 
-fn parse_same_site(value: &str) -> AppResult<SameSite> {
+pub(crate) fn parse_same_site(value: &str) -> AppResult<SameSite> {
     match value.trim().to_ascii_lowercase().as_str() {
         "strict" => Ok(SameSite::Strict),
         "lax" => Ok(SameSite::Lax),

session/storage/redis.rs

@@ -6,6 +6,7 @@ use super::format::{deserialize_session_state, serialize_session_state};
 use super::interface::{SessionState, SessionStore};
 use super::utils::generate_session_key;
 
+#[derive(Clone)]
 pub struct RedisSessionStore {
     redis: AppRedis,
 }
@@ -18,10 +19,12 @@ impl RedisSessionStore {
 
 impl SessionStore for RedisSessionStore {
     async fn load(&self, session_key: &SessionKey) -> Result<Option<SessionState>, AppError> {
-        let mut conn = self.redis.get_connection()?;
+        let mut conn = self.redis.get_connection();
-        let value: Option<String> = redis::cmd("GET")
+        let value: Option<String> = redis::Cmd::new()
+            .arg("GET")
             .arg(session_key.as_ref())
-            .query(&mut *conn.inner_mut())?;
+            .query_async(&mut conn)
+            .await?;
 
         match value {
             None => Ok(None),
@@ -36,12 +39,14 @@ impl SessionStore for RedisSessionStore {
     ) -> Result<SessionKey, AppError> {
         let body = serialize_session_state(&session_state)?;
         let session_key = generate_session_key();
-        let mut conn = self.redis.get_connection()?;
+        let mut conn = self.redis.get_connection();
-        redis::cmd("SETEX")
+        redis::Cmd::new()
+            .arg("SETEX")
             .arg(session_key.as_ref())
             .arg(ttl_secs)
             .arg(&body)
-            .query::<()>(&mut *conn.inner_mut())?;
+            .query_async::<()>(&mut conn)
+            .await?;
         Ok(session_key)
     }
 
@@ -52,29 +57,35 @@ impl SessionStore for RedisSessionStore {
         ttl_secs: u64,
     ) -> Result<SessionKey, AppError> {
         let body = serialize_session_state(&session_state)?;
-        let mut conn = self.redis.get_connection()?;
+        let mut conn = self.redis.get_connection();
-        redis::cmd("SETEX")
+        redis::Cmd::new()
+            .arg("SETEX")
             .arg(session_key.as_ref())
             .arg(ttl_secs)
             .arg(&body)
-            .query::<()>(&mut *conn.inner_mut())?;
+            .query_async::<()>(&mut conn)
+            .await?;
         Ok(session_key)
     }
 
     async fn update_ttl(&self, session_key: &SessionKey, ttl_secs: u64) -> Result<(), AppError> {
-        let mut conn = self.redis.get_connection()?;
+        let mut conn = self.redis.get_connection();
-        redis::cmd("EXPIRE")
+        redis::Cmd::new()
+            .arg("EXPIRE")
             .arg(session_key.as_ref())
             .arg(ttl_secs)
-            .query::<()>(&mut *conn.inner_mut())?;
+            .query_async::<()>(&mut conn)
+            .await?;
         Ok(())
     }
 
     async fn delete(&self, session_key: &SessionKey) -> Result<(), AppError> {
-        let mut conn = self.redis.get_connection()?;
+        let mut conn = self.redis.get_connection();
-        redis::cmd("DEL")
+        redis::Cmd::new()
+            .arg("DEL")
             .arg(session_key.as_ref())
-            .query::<()>(&mut *conn.inner_mut())?;
+            .query_async::<()>(&mut conn)
+            .await?;
         Ok(())
     }
 }