From 57f09e01f528b796d6448446f56ac8079988e6ab Mon Sep 17 00:00:00 2001
From: Andrew Morgan <andrew@amorgan.xyz>
Date: Mon, 2 Dec 2019 18:23:41 +0000
Subject: [PATCH] Fix error when using synapse_port_db on a vanilla synapse db
---
scripts/synapse_port_db | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/scripts/synapse_port_db b/scripts/synapse_port_db
index 0d3321682c..f24b8ffe67 100755
--- a/scripts/synapse_port_db
+++ b/scripts/synapse_port_db
@@ -782,7 +782,10 @@ class Porter(object):
def _setup_state_group_id_seq(self):
def r(txn):
txn.execute("SELECT MAX(id) FROM state_groups")
- next_id = txn.fetchone()[0] + 1
+ curr_id = txn.fetchone()[0]
+ if not curr_id:
+ return
+ next_id = curr_id + 1
txn.execute("ALTER SEQUENCE state_group_id_seq RESTART WITH %s", (next_id,))
return self.postgres_store.runInteraction("setup_state_group_id_seq", r)
--
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