60. Authentication failure listener (#6)

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

@@ -0,0 +1,23 @@
+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.AuthenticationFailureBadCredentialsEvent;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class AuthenticationFailureListener implements ApplicationListener<AuthenticationFailureBadCredentialsEvent> {
+
+    private final LoginAttemptService loginAttemptService;
+
+    @Override
+    public void onApplicationEvent(AuthenticationFailureBadCredentialsEvent event) {
+        String username = event.getAuthentication().getPrincipal().toString();
+        log.debug("{} failed to login", username);
+        loginAttemptService.loginFailed(username);
+    }
+}