Workaround for bug 816

Identified the root cause of bug 816 as a race condition in Juju 2.6.6,
which will be fixed in the pending 2.6.7 release. In the meantime, this
adds a workaround to dealing with the race condition by sleeping
immediately after the model is created.

Change-Id: Ief3d0bffe51cef0736f9819a2934e62412584fe4
Signed-off-by: Adam Israel <adam.israel@canonical.com>

diff --git a/modules/libjuju/juju/controller.py b/modules/libjuju/juju/controller.py
index d3902ba..ed9b744 100644 (file)
--- a/modules/libjuju/juju/controller.py
+++ b/modules/libjuju/juju/controller.py
@@ -1,3 +1,16 @@
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#     Unless required by applicable law or agreed to in writing, software
+#     distributed under the License is distributed on an "AS IS" BASIS,
+#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#     See the License for the specific language governing permissions and
+#     limitations under the License.
 import asyncio
 import json
 import logging
@@ -292,6 +305,13 @@ class Controller:
             owner,
             region
         )
+
+        # This is a temporary workaround for a race condition:
+        # https://bugs.launchpad.net/juju/+bug/1838774
+        # This will be fixed when Juju 2.6.7 is released.
+        import time
+        time.sleep(5)
+
         from juju.model import Model
         model = Model(jujudata=self._connector.jujudata)
         kwargs = self.connection().connect_params()