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-rw-r--r--synapse/config/workers.py12
1 files changed, 12 insertions, 0 deletions
diff --git a/synapse/config/workers.py b/synapse/config/workers.py
index e9c67807e5..9f81a73d6f 100644
--- a/synapse/config/workers.py
+++ b/synapse/config/workers.py
@@ -156,6 +156,8 @@ class WriterLocations:
             can only be a single instance.
         presence: The instances that write to the presence stream. Currently
             can only be a single instance.
+        push: The instances that write to the push stream. Currently
+            can only be a single instance.
     """
 
     events: List[str] = attr.ib(
@@ -182,6 +184,10 @@ class WriterLocations:
         default=["master"],
         converter=_instance_to_list_converter,
     )
+    push: List[str] = attr.ib(
+        default=["master"],
+        converter=_instance_to_list_converter,
+    )
 
 
 @attr.s(auto_attribs=True)
@@ -341,6 +347,7 @@ class WorkerConfig(Config):
             "account_data",
             "receipts",
             "presence",
+            "push",
         ):
             instances = _instance_to_list_converter(getattr(self.writers, stream))
             for instance in instances:
@@ -378,6 +385,11 @@ class WorkerConfig(Config):
                 "Must only specify one instance to handle `presence` messages."
             )
 
+        if len(self.writers.push) != 1:
+            raise ConfigError(
+                "Must only specify one instance to handle `push` messages."
+            )
+
         self.events_shard_config = RoutableShardedWorkerHandlingConfig(
             self.writers.events
         )