openstack/charm-ceph-dashboard
Code Issues Proposed changes

Add support for object gateway integration

Browse Source 
To add support for object gateways this change adds the
radosgw-user interface.

The focal bundle has one rados gateway application as more
than that is not supported on Octopus. The hersute bundle
has two rados gateway applications but does not contain
the lma applications as telegraf is not supported on
hersute.

Depends-On: Ieff1943b02f490559ccd245f60b744fb76a5d832
Change-Id: I38939b9938a5ba2ed6e3fb489f66a255f7aa8fe4
This commit is contained in:
Liam Young 2021-09-01 07:52:37 +00:00
parent 5561c896b3
commit d5cac285b5
10 changed files with 567 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
README.md
View File

@ -69,6 +69,14 @@ To enable Prometheus alerting, add the following relations:
juju relate ceph-dashboard:alertmanager-service prometheus-alertmanager:alertmanager-service
juju relate prometheus:alertmanager-service prometheus-alertmanager:alertmanager-service
## Object Gateway
To enable object gateway management add the following relation:
juju relate ceph-dashboard:radosgw-dashboard ceph-radosgw:radosgw-user
NOTE: On Octopus or earlier the dashboard can only be related to one ceph-radosgw application.
<!-- LINKS -->
[ceph-dashboard]: https://docs.ceph.com/en/latest/mgr/dashboard/

3
metadata.yaml
View File

@ -16,6 +16,7 @@ subordinate: true
series:
- focal
- groovy
- hirsute
requires:
dashboard:
interface: ceph-dashboard
@ -28,6 +29,8 @@ requires:
interface: http
prometheus:
interface: http
radosgw-dashboard:
interface: radosgw-user
provides:
grafana-dashboard:
interface: grafana-dashboard

21
osci.yaml
View File

@ -3,8 +3,27 @@
- charm-unit-jobs
check:
jobs:
- focal
- focal-octopus
- hirsute-pacific
vars:
needs_charm_build: true
charm_build_name: ceph-dashboard
build_type: charmcraft
- job:
name: focal-octopus
parent: func-target
dependencies:
- osci-lint
- tox-py35
- tox-py36
- tox-py37
- tox-py38
vars:
tox_extra_args: focal
- job:
name: hirsute-pacific
parent: func-target
dependencies: &smoke-jobs
- focal-octopus
vars:
tox_extra_args: hirsute

72
src/charm.py
View File

@ -29,6 +29,7 @@ import interface_dashboard
import interface_api_endpoints
import interface_grafana_dashboard
import interface_http
import interface_radosgw_user
import cryptography.hazmat.primitives.serialization as serialization
import charms_ceph.utils as ceph_utils
import charmhelpers.core.host as ch_host
@ -161,6 +162,10 @@ class CephDashboardCharm(ops_openstack.core.OSBaseCharm):
self.ca_client = ca_client.CAClient(
self,
'certificates')
self.radosgw_user = interface_radosgw_user.RadosGWUserRequires(
self,
'radosgw-dashboard',
request_system_role=True)
self.framework.observe(
self.mon.on.mon_ready,
self._configure_dashboard)
@ -170,6 +175,9 @@ class CephDashboardCharm(ops_openstack.core.OSBaseCharm):
self.framework.observe(
self.ca_client.on.tls_server_config_ready,
self._configure_dashboard)
self.framework.observe(
self.radosgw_user.on.gw_user_ready,
self._configure_dashboard)
self.framework.observe(self.on.add_user_action, self._add_user_action)
self.ingress = interface_api_endpoints.APIEndpointsRequires(
self,
@ -211,6 +219,50 @@ class CephDashboardCharm(ops_openstack.core.OSBaseCharm):
logging.info(
"register_grafana_dashboard: {}".format(dash_file))
def _update_legacy_radosgw_creds(self, access_key: str,
secret_key: str) -> None:
"""Update dashboard db with access & secret key for rados gateways.
This method uses the legacy format which only supports one gateway.
"""
self._apply_file_setting('set-rgw-api-access-key', access_key)
self._apply_file_setting('set-rgw-api-secret-key', secret_key)
def _update_multi_radosgw_creds(self, creds: str) -> None:
"""Update dashboard db with access & secret key for rados gateway."""
access_keys = {c['daemon_id']: c['access_key'] for c in creds}
secret_keys = {c['daemon_id']: c['secret_key'] for c in creds}
self._apply_file_setting(
'set-rgw-api-access-key',
json.dumps(access_keys))
self._apply_file_setting(
'set-rgw-api-secret-key',
json.dumps(secret_keys))
def _support_multiple_gateways(self) -> bool:
"""Check if version of dashboard supports multiple rados gateways"""
return ch_host.cmp_pkgrevno('ceph-common', '16.0') > 0
def _manage_radosgw(self) -> None:
"""Register rados gateways in dashboard db"""
if self.unit.is_leader():
creds = self.radosgw_user.get_user_creds()
if len(creds) < 1:
logging.info("No object gateway creds found")
return
if self._support_multiple_gateways():
self._update_multi_radosgw_creds(creds)
else:
if len(creds) > 1:
logging.error(
"Cannot enable object gateway support. Ceph release "
"does not support multiple object gateways in the "
"dashboard")
else:
self._update_legacy_radosgw_creds(
creds[0]['access_key'],
creds[0]['secret_key'])
def _on_ca_available(self, _) -> None:
"""Request TLS certificates."""
addresses = set()
@ -280,16 +332,31 @@ class CephDashboardCharm(ops_openstack.core.OSBaseCharm):
ceph_utils.mgr_disable_dashboard()
ceph_utils.mgr_enable_dashboard()
def _run_cmd(self, cmd: List[str]) -> None:
def _run_cmd(self, cmd: List[str]) -> str:
"""Run command in subprocess
`cmd` The command to run
"""
try:
subprocess.check_output(cmd, stderr=subprocess.STDOUT)
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
return output.decode('UTF-8')
except subprocess.CalledProcessError as exc:
logging.exception("Command failed: {}".format(exc.output))
def _apply_setting(self, ceph_setting: str, value: List[str]) -> str:
"""Apply a dashboard setting"""
cmd = ['ceph', 'dashboard', ceph_setting]
cmd.extend(value)
return self._run_cmd(cmd)
def _apply_file_setting(self, ceph_setting: str,
file_contents: str) -> str:
"""Apply a setting via a file"""
with tempfile.NamedTemporaryFile(mode='w', delete=True) as _file:
_file.write(file_contents)
_file.flush()
return self._apply_setting(ceph_setting, ['-i', _file.name])
def _apply_ceph_config_from_charm_config(self) -> None:
"""Read charm config and apply settings to dashboard config"""
for option in self.CHARM_TO_CEPH_OPTIONS:
@ -342,6 +409,7 @@ class CephDashboardCharm(ops_openstack.core.OSBaseCharm):
'ceph', 'dashboard', 'set-prometheus-api-host',
prometheus_ep])
self._register_dashboards()
self._manage_radosgw()
self._stored.is_started = True
self.update_status()

76
src/interface_radosgw_user.py Normal file
View File

@ -0,0 +1,76 @@
#!/usr/bin/env python3
# Copyright 2021 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 json
from ops.framework import (
StoredState,
EventBase,
ObjectEvents,
EventSource,
Object)
class RadosGWUserEvent(EventBase):
pass
class RadosGWUserEvents(ObjectEvents):
gw_user_ready = EventSource(RadosGWUserEvent)
class RadosGWUserRequires(Object):
on = RadosGWUserEvents()
_stored = StoredState()
def __init__(self, charm, relation_name, request_system_role=False):
super().__init__(charm, relation_name)
self.relation_name = relation_name
self.request_system_role = request_system_role
self.framework.observe(
charm.on[self.relation_name].relation_joined,
self.request_user)
self.framework.observe(
charm.on[self.relation_name].relation_changed,
self._on_relation_changed)
def request_user(self, event):
if self.model.unit.is_leader():
for relation in self.framework.model.relations[self.relation_name]:
relation.data[self.model.app]['system-role'] = json.dumps(
self.request_system_role)
def get_user_creds(self):
creds = []
for relation in self.framework.model.relations[self.relation_name]:
app_data = relation.data[relation.app]
for unit in relation.units:
unit_data = relation.data[unit]
cred_data = {
'access_key': app_data.get('access-key'),
'secret_key': app_data.get('secret-key'),
'uid': app_data.get('uid'),
'daemon_id': unit_data.get('daemon-id')}
if all(cred_data.values()):
creds.append(cred_data)
creds = sorted(creds, key=lambda k: k['daemon_id'])
return creds
def _on_relation_changed(self, event):
"""Handle the relation-changed event."""
if self.get_user_creds():
self.on.gw_user_ready.emit()

9
tests/bundles/focal.yaml
View File

@ -47,6 +47,9 @@ applications:
prometheus-alertmanager:
charm: cs:prometheus-alertmanager
num_units: 1
ceph-radosgw:
charm: cs:~openstack-charmers-next/ceph-radosgw
num_units: 3
relations:
- - 'ceph-osd:mon'
- 'ceph-mon:osd'
@ -80,3 +83,9 @@ relations:
- 'prometheus:website'
- - 'prometheus:alertmanager-service'
- 'prometheus-alertmanager:alertmanager-service'
- - 'ceph-radosgw:mon'
- 'ceph-mon:radosgw'
- - 'ceph-radosgw:certificates'
- 'vault:certificates'
- - 'ceph-dashboard:radosgw-dashboard'
- 'ceph-radosgw:radosgw-user'

63
tests/bundles/hirsute.yaml Normal file
View File

@ -0,0 +1,63 @@
local_overlay_enabled: False
series: hirsute
applications:
ceph-osd:
charm: cs:~openstack-charmers-next/ceph-osd
num_units: 6
storage:
osd-devices: 'cinder,10G'
options:
osd-devices: '/dev/test-non-existent'
ceph-mon:
charm: cs:~openstack-charmers-next/ceph-mon
num_units: 3
options:
monitor-count: '3'
vault:
num_units: 1
charm: cs:~openstack-charmers-next/vault
mysql-innodb-cluster:
charm: cs:~openstack-charmers-next/mysql-innodb-cluster
constraints: mem=3072M
num_units: 3
vault-mysql-router:
charm: cs:~openstack-charmers-next/mysql-router
ceph-dashboard:
charm: ../../ceph-dashboard.charm
options:
public-hostname: 'ceph-dashboard.zaza.local'
ceph-radosgw-east:
charm: cs:~openstack-charmers-next/ceph-radosgw
num_units: 3
options:
pool-prefix: east
region: east
ceph-radosgw-west:
charm: cs:~openstack-charmers-next/ceph-radosgw
num_units: 3
options:
pool-prefix: west
region: west
relations:
- - 'ceph-osd:mon'
- 'ceph-mon:osd'
- - 'vault:shared-db'
- 'vault-mysql-router:shared-db'
- - 'vault-mysql-router:db-router'
- 'mysql-innodb-cluster:db-router'
- - 'ceph-dashboard:dashboard'
- 'ceph-mon:dashboard'
- - 'ceph-dashboard:certificates'
- 'vault:certificates'
- - 'ceph-radosgw-east:mon'
- 'ceph-mon:radosgw'
- - 'ceph-radosgw-east:certificates'
- 'vault:certificates'
- - 'ceph-dashboard:radosgw-dashboard'
- 'ceph-radosgw-east:radosgw-user'
- - 'ceph-radosgw-west:mon'
- 'ceph-mon:radosgw'
- - 'ceph-radosgw-west:certificates'
- 'vault:certificates'
- - 'ceph-dashboard:radosgw-dashboard'
- 'ceph-radosgw-west:radosgw-user'

6
tests/tests.yaml
View File

@ -1,6 +1,7 @@
charm_name: ceph-dasboard
gate_bundles:
- focal
- hirsute
smoke_bundles:
- focal
configure:
@ -12,7 +13,7 @@ tests:
target_deploy_status:
ceph-dashboard:
workload-status: blocked
workload-status-message-regex: "No certificates found|Charm config option"
workload-status-message-regex: "No certificates found|Charm config option|Unit is ready"
vault:
workload-status: blocked
workload-status-message-prefix: Vault needs to be initialized
@ -25,3 +26,6 @@ target_deploy_status:
telegraf:
workload-status: active
workload-status-message-prefix: Monitoring
tests_options:
force_deploy:
- hirsute

145
unit_tests/test_ceph_dashboard_charm.py
View File

@ -21,7 +21,7 @@ import sys
sys.path.append('lib') # noqa
sys.path.append('src') # noqa
from mock import call, patch, MagicMock
from mock import ANY, call, patch, MagicMock
from ops.testing import Harness, _TestingModelBackend
from ops.model import (
@ -155,6 +155,7 @@ class TestCephDashboardCharmBase(CharmTestCase):
PATCHES = [
'ceph_utils',
'ch_host',
'socket',
'subprocess',
'ch_host',
@ -464,6 +465,148 @@ class TestCephDashboardCharmBase(CharmTestCase):
self.ceph_utils.mgr_disable_dashboard.assert_called_once_with()
self.ceph_utils.mgr_enable_dashboard.assert_called_once_with()
def test_rados_gateway(self):
self.ceph_utils.is_dashboard_enabled.return_value = True
self.ch_host.cmp_pkgrevno.return_value = 1
mon_rel_id = self.harness.add_relation('dashboard', 'ceph-mon')
rel_id = self.harness.add_relation('radosgw-dashboard', 'ceph-radosgw')
self.harness.begin()
self.harness.set_leader()
self.harness.add_relation_unit(
mon_rel_id,
'ceph-mon/0')
self.harness.update_relation_data(
mon_rel_id,
'ceph-mon/0',
{
'mon-ready': 'True'})
self.harness.add_relation_unit(
rel_id,
'ceph-radosgw/0')
self.harness.add_relation_unit(
rel_id,
'ceph-radosgw/1')
self.harness.update_relation_data(
rel_id,
'ceph-radosgw/0',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-3'})
self.harness.update_relation_data(
rel_id,
'ceph-radosgw/1',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-4'})
self.harness.update_relation_data(
rel_id,
'ceph-radosgw',
{
'access-key': 'XNUZVPL364U0BL1OXWJZ',
'secret-key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'})
self.subprocess.check_output.assert_has_calls([
call(['ceph', 'dashboard', 'set-rgw-api-access-key', '-i', ANY],
stderr=self.subprocess.STDOUT),
call().decode('UTF-8'),
call(['ceph', 'dashboard', 'set-rgw-api-secret-key', '-i', ANY],
stderr=self.subprocess.STDOUT),
call().decode('UTF-8'),
])
def test_rados_gateway_multi_relations_pacific(self):
self.ceph_utils.is_dashboard_enabled.return_value = True
self.ch_host.cmp_pkgrevno.return_value = 1
rel_id1 = self.harness.add_relation('radosgw-dashboard', 'ceph-eu')
rel_id2 = self.harness.add_relation('radosgw-dashboard', 'ceph-us')
mon_rel_id = self.harness.add_relation('dashboard', 'ceph-mon')
self.harness.begin()
self.harness.set_leader()
self.harness.add_relation_unit(
mon_rel_id,
'ceph-mon/0')
self.harness.update_relation_data(
mon_rel_id,
'ceph-mon/0',
{
'mon-ready': 'True'})
self.harness.add_relation_unit(
rel_id1,
'ceph-eu/0')
self.harness.add_relation_unit(
rel_id2,
'ceph-us/0')
self.harness.update_relation_data(
rel_id1,
'ceph-eu/0',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-3'})
self.harness.update_relation_data(
rel_id2,
'ceph-us/0',
{
'daemon-id': 'juju-dddddd-zaza-sdfsfsfs-4'})
self.harness.update_relation_data(
rel_id1,
'ceph-eu',
{
'access-key': 'XNUZVPL364U0BL1OXWJZ',
'secret-key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'})
self.subprocess.check_output.reset_mock()
self.harness.update_relation_data(
rel_id2,
'ceph-us',
{
'access-key': 'JGHKJGDKJGJGJHGYYYYM',
'secret-key': 'iljkdfhHKHKd88LKxNLSKDiijfjfjfldjfjlf44',
'uid': 'radosgw-user-10'})
self.subprocess.check_output.assert_has_calls([
call(['ceph', 'dashboard', 'set-rgw-api-access-key', '-i', ANY],
stderr=self.subprocess.STDOUT),
call().decode('UTF-8'),
call(['ceph', 'dashboard', 'set-rgw-api-secret-key', '-i', ANY],
stderr=self.subprocess.STDOUT),
call().decode('UTF-8'),
])
def test_rados_gateway_multi_relations_octopus(self):
self.ch_host.cmp_pkgrevno.return_value = -1
rel_id1 = self.harness.add_relation('radosgw-dashboard', 'ceph-eu')
rel_id2 = self.harness.add_relation('radosgw-dashboard', 'ceph-us')
self.harness.begin()
self.harness.set_leader()
self.harness.add_relation_unit(
rel_id1,
'ceph-eu/0')
self.harness.add_relation_unit(
rel_id2,
'ceph-us/0')
self.harness.update_relation_data(
rel_id1,
'ceph-eu/0',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-3'})
self.harness.update_relation_data(
rel_id2,
'ceph-us/0',
{
'daemon-id': 'juju-dddddd-zaza-sdfsfsfs-4'})
self.harness.update_relation_data(
rel_id1,
'ceph-eu',
{
'access-key': 'XNUZVPL364U0BL1OXWJZ',
'secret-key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'})
self.subprocess.check_output.reset_mock()
self.harness.update_relation_data(
rel_id2,
'ceph-us',
{
'access-key': 'JGHKJGDKJGJGJHGYYYYM',
'secret-key': 'iljkdfhHKHKd88LKxNLSKDiijfjfjfldjfjlf44',
'uid': 'radosgw-user-10'})
self.assertFalse(self.subprocess.check_output.called)
@patch.object(charm.secrets, 'choice')
def test__gen_user_password(self, _choice):
self.harness.begin()

169
unit_tests/test_interface_radosgw_user.py Normal file
View File

@ -0,0 +1,169 @@
#!/usr/bin/env python3
# Copyright 2021 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 unittest
import sys
sys.path.append('lib') # noqa
sys.path.append('src') # noqa
from ops.testing import Harness
from ops.charm import CharmBase
import interface_radosgw_user
class TestRadosGWUserRequires(unittest.TestCase):
class MyCharm(CharmBase):
def __init__(self, *args):
super().__init__(*args)
self.seen_events = []
self.radosgw_user = interface_radosgw_user.RadosGWUserRequires(
self,
'radosgw-dashboard')
self.framework.observe(
self.radosgw_user.on.gw_user_ready,
self._log_event)
def _log_event(self, event):
self.seen_events.append(type(event).__name__)
def setUp(self):
super().setUp()
self.harness = Harness(
self.MyCharm,
meta='''
name: my-charm
requires:
radosgw-dashboard:
interface: radosgw-user
'''
)
def test_init(self):
self.harness.begin()
self.assertEqual(
self.harness.charm.radosgw_user.relation_name,
'radosgw-dashboard')
def test_add_radosgw_dashboard_relation(self):
rel_id1 = self.harness.add_relation('radosgw-dashboard', 'ceph-eu')
rel_id2 = self.harness.add_relation('radosgw-dashboard', 'ceph-us')
self.harness.begin()
self.assertEqual(
self.harness.charm.seen_events,
[])
self.harness.set_leader()
self.harness.add_relation_unit(
rel_id1,
'ceph-eu/0')
self.harness.add_relation_unit(
rel_id1,
'ceph-eu/1')
self.harness.add_relation_unit(
rel_id2,
'ceph-us/0')
self.harness.add_relation_unit(
rel_id2,
'ceph-us/1')
self.harness.update_relation_data(
rel_id1,
'ceph-eu/0',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-3'})
self.harness.update_relation_data(
rel_id1,
'ceph-eu/1',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-4'})
self.harness.update_relation_data(
rel_id2,
'ceph-us/0',
{
'daemon-id': 'juju-dddddd-zaza-sdfsfsfs-4'})
self.harness.update_relation_data(
rel_id2,
'ceph-us/1',
{
'daemon-id': 'juju-dddddd-zaza-sdfsfsfs-5'})
self.harness.update_relation_data(
rel_id1,
'ceph-eu',
{
'access-key': 'XNUZVPL364U0BL1OXWJZ',
'secret-key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'})
self.assertEqual(
self.harness.charm.seen_events,
['RadosGWUserEvent'])
self.harness.update_relation_data(
rel_id2,
'ceph-us',
{
'access-key': 'JGHKJGDKJGJGJHGYYYYM',
'secret-key': 'iljkdfhHKHKd88LKxNLSKDiijfjfjfldjfjlf44',
'uid': 'radosgw-user-10'})
self.assertEqual(
self.harness.charm.radosgw_user.get_user_creds(),
[
{
'access_key': 'XNUZVPL364U0BL1OXWJZ',
'daemon_id': 'juju-80416c-zaza-7af97ef8a776-3',
'secret_key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'},
{
'access_key': 'XNUZVPL364U0BL1OXWJZ',
'daemon_id': 'juju-80416c-zaza-7af97ef8a776-4',
'secret_key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'},
{
'access_key': 'JGHKJGDKJGJGJHGYYYYM',
'daemon_id': 'juju-dddddd-zaza-sdfsfsfs-4',
'secret_key': 'iljkdfhHKHKd88LKxNLSKDiijfjfjfldjfjlf44',
'uid': 'radosgw-user-10'},
{
'access_key': 'JGHKJGDKJGJGJHGYYYYM',
'daemon_id': 'juju-dddddd-zaza-sdfsfsfs-5',
'secret_key': 'iljkdfhHKHKd88LKxNLSKDiijfjfjfldjfjlf44',
'uid': 'radosgw-user-10'}])
def test_add_radosgw_dashboard_relation_missing_data(self):
rel_id1 = self.harness.add_relation('radosgw-dashboard', 'ceph-eu')
self.harness.begin()
self.assertEqual(
self.harness.charm.seen_events,
[])
self.harness.set_leader()
self.harness.add_relation_unit(
rel_id1,
'ceph-eu/0')
self.harness.update_relation_data(
rel_id1,
'ceph-eu/0',
{
'daemon-id': 'juju-80416c-zaza-7af97ef8a776-3'})
self.harness.update_relation_data(
rel_id1,
'ceph-eu',
{
'secret-key': 'SgBo115xJcW90nkQ5EaNQ6fPeyeUUT0GxhwQbLFo',
'uid': 'radosgw-user-9'})
self.assertEqual(
self.harness.charm.radosgw_user.get_user_creds(),
[])
self.assertEqual(
self.harness.charm.seen_events,
[])