Merge "Handle cluster connection closed by server"

changes/76/564576/1
Zuul 5 years ago committed by Gerrit Code Review
commit 4916eadd3f

@ -211,7 +211,7 @@ class ClusteredAPITestCase(nsxlib_testcase.NsxClientTestCase):
self.assertRaises(nsxlib_exc.StaleRevision,
api.get, 'api/v1/transport-zones')
def test_cluster_proxy_connection_error(self):
def test_cluster_proxy_connection_establish_error(self):
def connect_timeout():
raise requests_exceptions.ConnectTimeout()
@ -221,6 +221,21 @@ class ClusteredAPITestCase(nsxlib_testcase.NsxClientTestCase):
self.assertRaises(nsxlib_exc.ServiceClusterUnavailable,
api.get, 'api/v1/transport-zones')
def test_cluster_proxy_connection_aborted(self):
def connect_timeout():
raise requests_exceptions.ConnectionError("Connection Aborted")
def all_good():
pass
# First call will cause connection aborted error, but next one
# should work
api = self.mock_nsx_clustered_api(session_response=[connect_timeout,
all_good])
api._validate = mock.Mock()
self.assertEqual(cluster.ClusterHealth.GREEN, api.health)
def test_cluster_round_robin_servicing(self):
conf_managers = ['8.9.10.11', '9.10.11.12', '10.11.12.13']
api = self.mock_nsx_clustered_api(nsx_api_managers=conf_managers)

@ -221,6 +221,9 @@ class NSXRequestsHTTPProvider(AbstractHTTPProvider):
def is_connection_exception(self, exception):
return isinstance(exception, requests_exceptions.ConnectionError)
def is_conn_open_exception(self, exception):
return isinstance(exception, requests_exceptions.ConnectTimeout)
def get_default_headers(self, session, provider, allow_overwrite_header):
"""Get the default headers that should be added to future requests"""
session.default_headers = {}
@ -584,10 +587,15 @@ class ClusteredAPI(object):
if not self._http_provider.is_connection_exception(e):
# only trap and retry connection errors
raise e
endpoint.set_state(EndpointState.DOWN)
if self._http_provider.is_conn_open_exception(e):
# unable to establish new connection - endpoint is
# inaccessible
endpoint.set_state(EndpointState.DOWN)
LOG.debug("Connection to %s failed, checking additional "
"endpoints" % url)
# retry until exhausting endpoints
"connections and endpoints" % url)
# this might be a result of server closing connection
# retry until exhausting connections and endpoints
return self._proxy(proxy_for, uri, *args, **kwargs)

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