Introduce embedded HTTP server for HAProxy monitoring dashboard

- Added a Python-based HTTP server to serve `dashboard.html` at `/` or `/dashboard.html` paths.
- Updated HAProxy configuration to integrate backend for the dashboard.
- Enhanced handling of index paths with conditional redirects to the dashboard page.
- Modified tests and updated expected outputs to reflect these changes.

tests/conftest.py

@@ -6,13 +6,12 @@ This module provides session-wide and function-level fixtures for testing.
 
 import os
 import shutil
-import tempfile
 import pytest
 
 
-# Create a session-wide temporary directory for all tests
-# Use a different prefix to avoid conflicts with cleanup plugin (which looks for "easyhaproxy_*")
-_test_session_dir = tempfile.mkdtemp(prefix="pytest_easyhaproxy_")
+# Fixed temporary directory for all tests — predictable so expected fixtures can reference it
+_test_session_dir = "/tmp/easyhaproxy_test"
+os.makedirs(_test_session_dir, exist_ok=True)
 os.environ["EASYHAPROXY_BASE_PATH"] = _test_session_dir
 
 

tests/expected/docker.txt

@@ -42,8 +42,14 @@ frontend dashboard
     mode http
     acl is_index path /
     acl is_index path /index.html
-    http-request return status 200 content-type "text/html" file /etc/easyhaproxy/www/dashboard.html if is_index
-    http-request return status 404
+    acl is_dashboard path /dashboard.html
+    http-request set-path /dashboard.html if is_index
+    http-request return status 404 if !is_dashboard
+    default_backend srv_dashboard
+
+backend srv_dashboard
+    mode http
+    server Local 127.0.0.1:9190
 
 frontend http_in_443
     bind *:443  ssl crt /etc/easyhaproxy/certs/certbot/ alpn h2,http/1.1 crt /etc/easyhaproxy/certs/haproxy/ alpn h2,http/1.1

tests/expected/services-letsencrypt.txt

@@ -50,8 +50,14 @@ frontend dashboard
     mode http
     acl is_index path /
     acl is_index path /index.html
-    http-request return status 200 content-type "text/html" file /etc/easyhaproxy/www/dashboard.html if is_index
-    http-request return status 404
+    acl is_dashboard path /dashboard.html
+    http-request set-path /dashboard.html if is_index
+    http-request return status 404 if !is_dashboard
+    default_backend srv_dashboard
+
+backend srv_dashboard
+    mode http
+    server Local 127.0.0.1:9190
 
 frontend http_in_80
     bind *:80

tests/expected/services-multiple-hosts.txt

@@ -50,8 +50,14 @@ frontend dashboard
     mode http
     acl is_index path /
     acl is_index path /index.html
-    http-request return status 200 content-type "text/html" file /etc/easyhaproxy/www/dashboard.html if is_index
-    http-request return status 404
+    acl is_dashboard path /dashboard.html
+    http-request set-path /dashboard.html if is_index
+    http-request return status 404 if !is_dashboard
+    default_backend srv_dashboard
+
+backend srv_dashboard
+    mode http
+    server Local 127.0.0.1:9190
 
 frontend http_in_19901
     bind *:19901

tests/expected/ssl-loose.txt

@@ -40,8 +40,14 @@ frontend dashboard
     mode http
     acl is_index path /
     acl is_index path /index.html
-    http-request return status 200 content-type "text/html" file /etc/easyhaproxy/www/dashboard.html if is_index
-    http-request return status 404
+    acl is_dashboard path /dashboard.html
+    http-request set-path /dashboard.html if is_index
+    http-request return status 404 if !is_dashboard
+    default_backend srv_dashboard
+
+backend srv_dashboard
+    mode http
+    server Local 127.0.0.1:9190
 
 backend certbot_backend
     mode http

tests/expected/static-cors.txt

@@ -57,8 +57,14 @@ frontend dashboard
     mode http
     acl is_index path /
     acl is_index path /index.html
-    http-request return status 200 content-type "text/html" file /etc/easyhaproxy/www/dashboard.html if is_index
-    http-request return status 404
+    acl is_dashboard path /dashboard.html
+    http-request set-path /dashboard.html if is_index
+    http-request return status 404 if !is_dashboard
+    default_backend srv_dashboard
+
+backend srv_dashboard
+    mode http
+    server Local 127.0.0.1:9190
 
 frontend http_in_80
     bind *:80

tests/expected/static.txt

@@ -50,8 +50,14 @@ frontend dashboard
     mode http
     acl is_index path /
     acl is_index path /index.html
-    http-request return status 200 content-type "text/html" file /etc/easyhaproxy/www/dashboard.html if is_index
-    http-request return status 404
+    acl is_dashboard path /dashboard.html
+    http-request set-path /dashboard.html if is_index
+    http-request return status 404 if !is_dashboard
+    default_backend srv_dashboard
+
+backend srv_dashboard
+    mode http
+    server Local 127.0.0.1:9190
 
 frontend http_in_443
     bind *:443  ssl crt /etc/easyhaproxy/certs/certbot/ alpn h2,http/1.1 crt /etc/easyhaproxy/certs/haproxy/ alpn h2,http/1.1

tests/test_plugins.py

@@ -948,7 +948,7 @@ class TestFastcgiPlugin:
 
         assert plugin.name == "fastcgi"
         assert plugin.enabled is True
-        assert plugin.document_root == f"{Consts.base_path}/www"
+        assert plugin.document_root == "/var/www/html"
         assert plugin.index_file == "index.php"
         assert plugin.path_info is True
         assert plugin.custom_params == {}
@@ -970,7 +970,7 @@ class TestFastcgiPlugin:
         """Test plugin generates correct HAProxy config"""
         plugin = FastcgiPlugin()
         plugin.configure({
-            "document_root": f"{Consts.base_path}/www",
+            "document_root": "/var/www/html",
             "index_file": "index.php"
         })
 
@@ -992,9 +992,9 @@ class TestFastcgiPlugin:
         assert len(result.global_configs) == 1
         fcgi_app_def = result.global_configs[0]
         assert "fcgi-app fcgi_phpapp_local" in fcgi_app_def
-        assert f"docroot {Consts.base_path}/www" in fcgi_app_def
+        assert "docroot /var/www/html" in fcgi_app_def
         assert "index index.php" in fcgi_app_def
-        assert result.metadata["document_root"] == f"{Consts.base_path}/www"
+        assert result.metadata["document_root"] == "/var/www/html"
         assert result.metadata["index_file"] == "index.php"
 
     def test_fastcgi_plugin_custom_params(self):