runtime-rs: Update sandbox status to include created_at field

Ensure the `created_at` timestamp is correctly propagated in
the sandbox status.

Although `created_at` is present in the `SandboxStatus` and
`SandboxStatusResponse` data structures, it was previously
omitted during the status transition.

This commit completes the implementation by passing the value
recorded during sandbox initialization.

Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>

src/runtime-rs/crates/runtimes/common/src/types/mod.rs

@@ -233,6 +233,7 @@ pub struct SandboxStatus {
     pub pid: u32,
     pub state: String,
     pub info: std::collections::HashMap<String, String>,
+    pub created_at: Option<std::time::SystemTime>,
 }
 
 #[derive(Debug, Clone)]

src/runtime-rs/crates/runtimes/src/manager.rs

@@ -581,7 +581,7 @@ impl RuntimeHandlerManager {
                     sandbox_id: status.sandbox_id,
                     pid: status.pid,
                     state: status.state,
-                    created_at: None,
+                    created_at: status.created_at,
                     exited_at: None,
                 }))
             }

src/runtime-rs/crates/runtimes/virt_container/src/sandbox.rs

@@ -98,6 +98,7 @@ pub enum SandboxState {
 struct SandboxInner {
     state: SandboxState,
     exit_info: Option<SandboxExitInfo>,
+    created_at: Option<SystemTime>,
 }
 
 impl SandboxInner {
@@ -105,6 +106,7 @@ impl SandboxInner {
         Self {
             state: SandboxState::Init,
             exit_info: None,
+            created_at: None,
         }
     }
 }
@@ -864,6 +866,7 @@ impl Sandbox for VirtSandbox {
             .context("create sandbox")?;
 
         inner.state = SandboxState::Running;
+        inner.created_at = Some(std::time::SystemTime::now());
 
         let sandbox = self.clone();
         tokio::spawn(async move {
@@ -985,7 +988,8 @@ impl Sandbox for VirtSandbox {
             sandbox_id: self.sid.clone(),
             pid: std::process::id(),
             state,
-            ..Default::default()
+            info: std::collections::HashMap::new(),
+            created_at: inner.created_at,
         })
     }