Add task diff support

server/utilities/threads_manager.py

@@ -0,0 +1,29 @@
+from functools import wraps
+from threading import Lock, Thread
+
+import attr
+
+
+@attr.s(auto_attribs=True)
+class ThreadsManager:
+    objects = {}
+    lock = Lock()
+
+    def register(self, thread_name, daemon=True):
+        def decorator(f):
+            @wraps(f)
+            def wrapper(*args, **kwargs):
+                with self.lock:
+                    thread = self.objects.get(thread_name)
+                    if not thread:
+                        thread = Thread(
+                            target=f, name=thread_name, args=args, kwargs=kwargs
+                        )
+                        thread.daemon = daemon
+                        thread.start()
+                        self.objects[thread_name] = thread
+                    return thread.ident
+
+            return wrapper
+
+        return decorator