registry: configure postgres pool explicitly

apps/mcp-server/src/main.rs

@@ -5,7 +5,7 @@ mod session;
 
 use std::{env, net::SocketAddr, time::Duration};
 
-use crank_registry::PostgresRegistry;
+use crank_registry::{PostgresPoolConfig, PostgresRegistry};
 use crank_runtime::SecretCrypto;
 use sqlx::postgres::PgConnectOptions;
 use tokio::net::TcpListener;
@@ -30,11 +30,24 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .map(Duration::from_millis)
         .unwrap_or_else(|| Duration::from_secs(5));
     let socket_addr: SocketAddr = bind_addr.parse()?;
-    let registry = PostgresRegistry::connect_with_options(database_options_from_env()?).await?;
+    let pool_config = PostgresPoolConfig::from_env()?;
+    let registry = PostgresRegistry::connect_with_options_and_pool_config(
+        database_options_from_env()?,
+        pool_config,
+    )
+    .await?;
     let secret_crypto = SecretCrypto::new(&env::var("CRANK_MASTER_KEY")?)?;
     let app = build_app(registry, refresh_interval, base_url, secret_crypto);
     let listener = TcpListener::bind(socket_addr).await?;
 
+    info!(
+        max_connections = pool_config.max_connections,
+        min_connections = pool_config.min_connections,
+        acquire_timeout_ms = pool_config.acquire_timeout_ms,
+        idle_timeout_ms = pool_config.idle_timeout_ms,
+        max_lifetime_ms = pool_config.max_lifetime_ms,
+        "postgres pool configured"
+    );
     info!("mcp-server listening on {}", socket_addr);
 
     axum::serve(listener, app).await?;