61. Authentication success listener (#6)

support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/listener/AuthenticationSuccessListener.java

@@ -0,0 +1,27 @@
+package net.shyshkin.study.fullstack.supportportal.backend.listener;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import net.shyshkin.study.fullstack.supportportal.backend.service.LoginAttemptService;
+import org.springframework.context.ApplicationListener;
+import org.springframework.security.authentication.event.AuthenticationSuccessEvent;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class AuthenticationSuccessListener implements ApplicationListener<AuthenticationSuccessEvent> {
+
+    private final LoginAttemptService loginAttemptService;
+
+    @Override
+    public void onApplicationEvent(AuthenticationSuccessEvent event) {
+        Object principal = event.getAuthentication().getPrincipal();
+        if (principal instanceof UserDetails) {
+            String username = ((UserDetails) principal).getUsername();
+            log.debug("{} successfully logged in", username);
+            loginAttemptService.loginSucceeded(username);
+        }
+    }
+}