add @authenticated decorator

pyotrs/lib.py

@@ -60,6 +60,10 @@ class SessionCreateError(PyOTRSError):
     pass
 
 
+class SessionNotCreated(PyOTRSError):
+    pass
+
+
 class APIError(PyOTRSError):
     pass
 
@@ -68,6 +72,19 @@ class HTTPError(PyOTRSError):
     pass
 
 
+def authenticated(func):
+    """ Decorator to check whether a Session IDs is already stored"""
+
+    def check_session_id_store_for_value(self, *args, **kwargs):
+        if not self.session_id_store.value:
+            raise SessionNotCreated("Call session_create() or "
+                                    "session_restore_or_set_up_new() first")
+
+        return func(self, *args, **kwargs)
+
+    return check_session_id_store_for_value
+
+
 class Article(object):
     """PyOTRS Article class """
 
@@ -775,6 +792,7 @@ class Client(object):
         * ticket_create
     """
 
+    @authenticated
     def ticket_create(self,
                       ticket=None,
                       article=None,
@@ -830,6 +848,7 @@ class Client(object):
         * ticket_get_by_number
     """
 
+    @authenticated
     def ticket_get_by_id(self,
                          ticket_id,
                          articles=False,
@@ -864,6 +883,7 @@ class Client(object):
         else:
             return self.result[0]
 
+    @authenticated
     def ticket_get_by_list(self,
                            ticket_id_list,
                            articles=False,
@@ -953,6 +973,7 @@ class Client(object):
         * ticket_search_full_text
     """
 
+    @authenticated
     def ticket_search(self, **kwargs):
         """Wrapper for search ticket
 
@@ -1015,6 +1036,7 @@ class Client(object):
         * ticket_update_set_pending
     """
 
+    @authenticated
     def ticket_update(self,
                       ticket_id,
                       article=None,