feat: add active user session tracking and visualization in admin dashboard

2026-07-03 17:18:14 +02:00
parent 214ec08229
commit 19cee92437
4 changed files with 120 additions and 0 deletions
@@ -0,0 +1,37 @@
+package com.astalange.web.controller;
+
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.session.SessionRegistry;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Controller
+@RequestMapping("/admin/sessions")
+public class SessionController {
+
+    private final SessionRegistry sessionRegistry;
+
+    public SessionController(SessionRegistry sessionRegistry) {
+        this.sessionRegistry = sessionRegistry;
+    }
+
+    @GetMapping
+    @PreAuthorize("hasRole('ADMIN')")
+    public String viewSessions(Model model) {
+        List<Object> principals = sessionRegistry.getAllPrincipals();
+        List<String> activeUsers = principals.stream()
+                .filter(principal -> principal instanceof UserDetails)
+                .map(principal -> ((UserDetails) principal).getUsername())
+                .collect(Collectors.toList());
+        
+        model.addAttribute("activeUsers", activeUsers);
+        model.addAttribute("activeCount", activeUsers.size());
+        return "admin/sessions";
+    }
+}