snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

zerver/management/commands/merge_streams.py

@@ -0,0 +1,31 @@
+from argparse import ArgumentParser
+from typing import Any
+
+from typing_extensions import override
+
+from zerver.actions.streams import merge_streams
+from zerver.lib.management import ZulipBaseCommand
+from zerver.models.streams import get_stream
+
+
+class Command(ZulipBaseCommand):
+    help = """Merge two streams."""
+
+    @override
+    def add_arguments(self, parser: ArgumentParser) -> None:
+        parser.add_argument("stream_to_keep", help="name of stream to keep")
+        parser.add_argument(
+            "stream_to_destroy", help="name of stream to merge into the stream being kept"
+        )
+        self.add_realm_args(parser, required=True)
+
+    @override
+    def handle(self, *args: Any, **options: str) -> None:
+        realm = self.get_realm(options)
+        assert realm is not None  # Should be ensured by parser
+        stream_to_keep = get_stream(options["stream_to_keep"], realm)
+        stream_to_destroy = get_stream(options["stream_to_destroy"], realm)
+        stats = merge_streams(realm, stream_to_keep, stream_to_destroy)
+        print(f"Added {stats[0]} subscriptions")
+        print(f"Moved {stats[1]} messages")
+        print(f"Deactivated {stats[2]} subscriptions")