From 09c6699900da962c5e35eb82e358240a4099838f Mon Sep 17 00:00:00 2001 From: Suhas Daftuar Date: Wed, 9 May 2018 13:14:21 -0400 Subject: [PATCH] [qa] Handle disconnect_node race Several tests call disconnect_nodes() on each node-pair in rapid succession, resulting in a race condition if a node disconnects a peer in-between the calculation of the nodeid's to disconnect and the invocation of the disconnectnode rpc call. Handle this. --- test/functional/test_framework/util.py | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py index 540727dc85..93588b9669 100644 --- a/test/functional/test_framework/util.py +++ b/test/functional/test_framework/util.py @@ -351,7 +351,14 @@ def set_node_times(nodes, t): def disconnect_nodes(from_connection, node_num): for peer_id in [peer['id'] for peer in from_connection.getpeerinfo() if "testnode%d" % node_num in peer['subver']]: - from_connection.disconnectnode(nodeid=peer_id) + try: + from_connection.disconnectnode(nodeid=peer_id) + except JSONRPCException as e: + # If this node is disconnected between calculating the peer id + # and issuing the disconnect, don't worry about it. + # This avoids a race condition if we're mass-disconnecting peers. + if e.error['code'] != -29: # RPC_CLIENT_NODE_NOT_CONNECTED + raise # wait to disconnect wait_until(lambda: [peer['id'] for peer in from_connection.getpeerinfo() if "testnode%d" % node_num in peer['subver']] == [], timeout=5)