get holidays from external service

src/main/java/de/mbremer/secutity/UserService.java

@@ -0,0 +1,19 @@
+package de.mbremer.secutity;
+
+import io.quarkus.security.identity.SecurityIdentity;
+
+import javax.enterprise.context.RequestScoped;
+import javax.inject.Inject;
+
+@RequestScoped
+public class UserService {
+  @Inject
+  SecurityIdentity identity;
+
+  /**
+   * Returns the user currently logged in.
+   */
+  public User getCurrentUser() {
+    return User.find("username", identity.getPrincipal().getName()).singleResult();
+  }
+}