Currently, ryu-manager uses distutils.version.LooseVersion for
"--zapi-frr-version" to parse the given version sting.
With custom type class for oslo_config.cfg.Opt, oslo_config might access
__class__ attribute for equal comparison.
But in case on Python 2, LooseVersion does not have __class__ attribute
and it causes AttributeError. (This error is not always reproduced)
This patch injects required attribute into LooseVersion and avoids this
problem.
Signed-off-by: IWASE Yusuke <iwase.yusu...@gmail.com>
---
ryu/flags.py | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/ryu/flags.py b/ryu/flags.py
index b63b9b5..400df86 100644
--- a/ryu/flags.py
+++ b/ryu/flags.py
@@ -86,6 +86,13 @@ DEFAULT_ZSERV_ROUTER_ID = '1.1.1.1'
# should be None.
DEFAULT_ZSERV_FRR_VERSION = '0.0'
+# Hack: In oslo_config.cfg.Opt, ConfigType might access __class__ attribute
+# for equal comparison, but on Python 2, LooseVersion does not have __class__
+# attribute and it causes AttributeError. So here inject __class__ attribute
+# into LooseVersion class.
+if not hasattr(LooseVersion, '__class__'):
+ LooseVersion.__class__ = LooseVersion
+
CONF.register_cli_opts([
cfg.StrOpt(
'server-host', default=DEFAULT_ZSERV_HOST,
--
2.7.4
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