agent: restart webserver after token update

Restart the webserver when key material database in the S3 bucket is
updated, ensuring that the webserver always uses the latest token and
key material.

Signed-off-by: Erdem Meydanli <[email protected]>

Author: meerd

src/vtok_agent/src/agent/mngtok.rs

@@ -304,7 +304,7 @@ impl ManagedToken {
         })
     }
 
-    fn update(&mut self) -> Result<(), Error> {
+    fn update(&mut self) -> Result<Option<PostSyncAction>, Error> {
         self.enclave
             .update_token(
                 self.label.clone(),
@@ -315,18 +315,18 @@ impl ManagedToken {
             .map_err(Error::UpdateTokenError)?;
 
         if let Some(_target) = self.target.as_ref() {
-            debug!("Updating managed service configuration");
-            self.satisfy_target(false).or_else(|e| {
+            debug!("Updating managed service configuration.");
+            return self.satisfy_target(true).or_else(|e| {
                 error!(
                     "Failed to update managed service configuration for token {}: {:?}",
                     self.label.as_str(),
                     e
                 );
                 Ok(None)
-            })?;
+            });
         }
 
-        Ok(())
+        Ok(None)
     }
 
     fn refresh(&mut self) -> Result<(), Error> {
@@ -371,7 +371,7 @@ impl ManagedToken {
         match (is_online, db_changed) {
             (true, true) => {
                 info!("DB change detected. Updating token: {}.", self.label.as_str());
-                self.update()?;
+                return self.update();
             }
             (true, false) => {
                 if self.next_refresh <= Instant::now() {