Update main.py

fixed service instances and syntax

Author: nmveeresh

mcpgateway/main.py

@@ -109,7 +109,7 @@
     get_streamable_http_session,
     get_tag_service,
     get_tool_service,
-    get_a2a_agent_service()
+    get_a2a_agent_service,
 )
 
 # middleware imports
@@ -161,17 +161,17 @@
 plugin_manager: PluginManager | None = PluginManager(settings.plugin_config_file) if settings.plugins_enabled else None
 
 # Initialize services
-tool_service = ToolService()
-resource_service = ResourceService()
-prompt_service = PromptService()
-gateway_service = GatewayService()
-root_service = RootService()
-completion_service = CompletionService()
-sampling_handler = SamplingHandler()
-server_service = ServerService()
-tag_service = TagService()
-export_service = ExportService()
-import_service = ImportService()
+tool_service = get_tool_service()
+resource_service = get_resource_service()
+prompt_service = get_prompt_service()
+gateway_service = get_gateway_service()
+root_service = get_root_service()
+completion_service = get_completion_service()
+sampling_handler = get_sampling_handler()
+server_service = get_server_service()
+tag_service = get_tag_service()
+export_service = get_export_service()
+import_service = get_import_service()
 # Initialize A2A service only if A2A features are enabled
 a2a_service = get_a2a_agent_service() if settings.mcpgateway_a2a_enabled else None