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-rw-r--r--synapse/handlers/admin.py39
1 files changed, 22 insertions, 17 deletions
diff --git a/synapse/handlers/admin.py b/synapse/handlers/admin.py
index 6c905e97a7..69d2c8c36f 100644
--- a/synapse/handlers/admin.py
+++ b/synapse/handlers/admin.py
@@ -99,7 +99,7 @@ class AdminHandler(BaseHandler):
         defer.returnValue(ret)
 
     @defer.inlineCallbacks
-    def exfiltrate_user_data(self, user_id, writer):
+    def export_user_data(self, user_id, writer):
         """Write all data we have on the user to the given writer.
 
         Args:
@@ -107,7 +107,8 @@ class AdminHandler(BaseHandler):
             writer (ExfiltrationWriter)
 
         Returns:
-            defer.Deferred
+            defer.Deferred: Resolves when all data for a user has been written.
+            The returned value is that returned by `writer.finished()`.
         """
         # Get all rooms the user is in or has been in
         rooms = yield self.store.get_rooms_for_user_where_membership_is(
@@ -134,7 +135,7 @@ class AdminHandler(BaseHandler):
 
             forgotten = yield self.store.did_forget(user_id, room_id)
             if forgotten:
-                logger.info("[%s] User forgot room %d, ignoring", room_id)
+                logger.info("[%s] User forgot room %d, ignoring", user_id, room_id)
                 continue
 
             if room_id not in rooms_user_has_been_in:
@@ -172,9 +173,10 @@ class AdminHandler(BaseHandler):
             # dict[str, set[str]].
             event_to_unseen_prevs = {}
 
-            # The reverse mapping to above, i.e. map from unseen event to parent
-            # events. dict[str, set[str]]
-            unseen_event_to_parents = {}
+            # The reverse mapping to above, i.e. map from unseen event to events
+            # that have the unseen event in their prev_events, i.e. the unseen
+            # events "children". dict[str, set[str]]
+            unseen_to_child_events = {}
 
             # We fetch events in the room the user could see by fetching *all*
             # events that we have and then filtering, this isn't the most
@@ -200,14 +202,14 @@ class AdminHandler(BaseHandler):
                     if unseen_events:
                         event_to_unseen_prevs[event.event_id] = unseen_events
                         for unseen in unseen_events:
-                            unseen_event_to_parents.setdefault(unseen, set()).add(
+                            unseen_to_child_events.setdefault(unseen, set()).add(
                                 event.event_id
                             )
 
                     # Now check if this event is an unseen prev event, if so
                     # then we remove this event from the appropriate dicts.
-                    for event_id in unseen_event_to_parents.pop(event.event_id, []):
-                        event_to_unseen_prevs.get(event_id, set()).discard(
+                    for child_id in unseen_to_child_events.pop(event.event_id, []):
+                        event_to_unseen_prevs.get(child_id, set()).discard(
                             event.event_id
                         )
 
@@ -233,7 +235,7 @@ class AdminHandler(BaseHandler):
 
 
 class ExfiltrationWriter(object):
-    """Interface used to specify how to write exfiltrated data.
+    """Interface used to specify how to write exported data.
     """
 
     def write_events(self, room_id, events):
@@ -254,7 +256,7 @@ class ExfiltrationWriter(object):
         Args:
             room_id (str)
             event_id (str)
-            state (list[FrozenEvent])
+            state (dict[tuple[str, str], FrozenEvent])
         """
         pass
 
@@ -264,13 +266,16 @@ class ExfiltrationWriter(object):
         Args:
             room_id (str)
             event (FrozenEvent)
-            state (list[dict]): A subset of the state at the invite, with a
-                subset of the event keys (type, state_key, content and sender)
+            state (dict[tuple[str, str], dict]): A subset of the state at the
+                invite, with a subset of the event keys (type, state_key
+                content and sender)
         """
 
     def finished(self):
-        """Called when exfiltration is complete, and the return valus is passed
-        to the requester.
+        """Called when all data has succesfully been exported and written.
+
+        This functions return value is passed to the caller of
+        `export_user_data`.
         """
         pass
 
@@ -281,7 +286,7 @@ class FileExfiltrationWriter(ExfiltrationWriter):
     Returns the directory location on completion.
 
     Args:
-        user_id (str): The user whose data is being exfiltrated.
+        user_id (str): The user whose data is being exported.
         directory (str|None): The directory to write the data to. If None then
             will write to a temporary directory.
     """
@@ -293,7 +298,7 @@ class FileExfiltrationWriter(ExfiltrationWriter):
             self.base_directory = directory
         else:
             self.base_directory = tempfile.mkdtemp(
-                prefix="synapse-exfiltrate__%s__" % (user_id,)
+                prefix="synapse-exported__%s__" % (user_id,)
             )
 
         os.makedirs(self.base_directory, exist_ok=True)