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charm-ovn-relay-k8s
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Liam Young 2022-01-31 12:53:45 +00:00
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[flake8]
max-line-length = 99
select: E,W,F,C,N
exclude:
venv
.git
build
dist
*.egg_info

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venv/
build/
*.charm
*.swp
.coverage
__pycache__/
*.py[cod]
.tox
.stestr/

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/venv
*.py[cod]
*.charm

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[DEFAULT]
test_path=./unit_tests
top_dir=./

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# sunbeam-ovn-relay-operator
## Developing
Create and activate a virtualenv with the development requirements:
virtualenv -p python3 venv
source venv/bin/activate
pip install -r requirements-dev.txt
## Code overview
TEMPLATE-TODO:
One of the most important things a consumer of your charm (or library)
needs to know is what set of functionality it provides. Which categories
does it fit into? Which events do you listen to? Which libraries do you
consume? Which ones do you export and how are they used?
## Intended use case
TEMPLATE-TODO:
Why were these decisions made? What's the scope of your charm?
## Roadmap
If this Charm doesn't fulfill all of the initial functionality you were
hoping for or planning on, please add a Roadmap or TODO here
## Testing
The Python operator framework includes a very nice harness for testing
operator behaviour without full deployment. Just `run_tests`:
./run_tests

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# sunbeam-ovn-relay-operator
## Description
TODO: Describe your charm in a few paragraphs of Markdown
## Usage
TODO: Provide high-level usage, such as required config or relations
## Relations
TODO: Provide any relations which are provided or required by your charm
## OCI Images
TODO: Include a link to the default image your charm uses
## Contributing
Please see the [Juju SDK docs](https://juju.is/docs/sdk) for guidelines
on enhancements to this charm following best practice guidelines, and
`CONTRIBUTING.md` for developer guidance.

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# NOTE: no actions yet!
{ }

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# Learn more about charmcraft.yaml configuration at:
# https://juju.is/docs/sdk/charmcraft-config
type: "charm"
bases:
- build-on:
- name: "ubuntu"
channel: "20.04"
run-on:
- name: "ubuntu"
channel: "20.04"
parts:
charm:
build-packages:
- git
- libffi-dev
- libssl-dev
charm-python-packages:
- setuptools < 58
- cryptography < 3.4

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# Copyright 2022 liam
# See LICENSE file for licensing details.
#
options:
os-public-hostname:
default: ovn-relay.juju
description: |
The hostname or address of the internal endpoints that should be advertised
in the neutron image provider.
type: string

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# Copyright 2021 Canonical Ltd.
# See LICENSE file for licensing details.
"""# KubernetesServicePatch Library.
This library is designed to enable developers to more simply patch the Kubernetes Service created
by Juju during the deployment of a sidecar charm. When sidecar charms are deployed, Juju creates a
service named after the application in the namespace (named after the Juju model). This service by
default contains a "placeholder" port, which is 65536/TCP.
When modifying the default set of resources managed by Juju, one must consider the lifecycle of the
charm. In this case, any modifications to the default service (created during deployment), will
be overwritten during a charm upgrade.
When initialised, this library binds a handler to the parent charm's `install` and `upgrade_charm`
events which applies the patch to the cluster. This should ensure that the service ports are
correct throughout the charm's life.
The constructor simply takes a reference to the parent charm, and a list of tuples that each define
a port for the service, where each tuple contains:
- a name for the port
- port for the service to listen on
- optionally: a targetPort for the service (the port in the container!)
- optionally: a nodePort for the service (for NodePort or LoadBalancer services only!)
- optionally: a name of the service (in case service name needs to be patched as well)
## Getting Started
To get started using the library, you just need to fetch the library using `charmcraft`. **Note
that you also need to add `lightkube` and `lightkube-models` to your charm's `requirements.txt`.**
```shell
cd some-charm
charmcraft fetch-lib charms.observability_libs.v0.kubernetes_service_patch
echo <<-EOF >> requirements.txt
lightkube
lightkube-models
EOF
```
Then, to initialise the library:
For ClusterIP services:
```python
# ...
from charms.observability_libs.v0.kubernetes_service_patch import KubernetesServicePatch
class SomeCharm(CharmBase):
def __init__(self, *args):
# ...
self.service_patcher = KubernetesServicePatch(self, [(f"{self.app.name}", 8080)])
# ...
```
For LoadBalancer/NodePort services:
```python
# ...
from charms.observability_libs.v0.kubernetes_service_patch import KubernetesServicePatch
class SomeCharm(CharmBase):
def __init__(self, *args):
# ...
self.service_patcher = KubernetesServicePatch(
self, [(f"{self.app.name}", 443, 443, 30666)], "LoadBalancer"
)
# ...
```
Additionally, you may wish to use mocks in your charm's unit testing to ensure that the library
does not try to make any API calls, or open any files during testing that are unlikely to be
present, and could break your tests. The easiest way to do this is during your test `setUp`:
```python
# ...
@patch("charm.KubernetesServicePatch", lambda x, y: None)
def setUp(self, *unused):
self.harness = Harness(SomeCharm)
# ...
```
"""
import logging
from types import MethodType
from typing import Literal, Sequence, Tuple, Union
from lightkube import ApiError, Client
from lightkube.models.core_v1 import ServicePort, ServiceSpec
from lightkube.models.meta_v1 import ObjectMeta
from lightkube.resources.core_v1 import Service
from lightkube.types import PatchType
from ops.charm import CharmBase
from ops.framework import Object
logger = logging.getLogger(__name__)
# The unique Charmhub library identifier, never change it
LIBID = "0042f86d0a874435adef581806cddbbb"
# Increment this major API version when introducing breaking changes
LIBAPI = 0
# Increment this PATCH version before using `charmcraft publish-lib` or reset
# to 0 if you are raising the major API version
LIBPATCH = 6
PortDefinition = Union[Tuple[str, int], Tuple[str, int, int], Tuple[str, int, int, int]]
ServiceType = Literal["ClusterIP", "LoadBalancer"]
class KubernetesServicePatch(Object):
"""A utility for patching the Kubernetes service set up by Juju."""
def __init__(
self,
charm: CharmBase,
ports: Sequence[PortDefinition],
service_name: str = None,
service_type: ServiceType = "ClusterIP",
additional_labels: dict = None,
additional_selectors: dict = None,
additional_annotations: dict = None,
):
"""Constructor for KubernetesServicePatch.
Args:
charm: the charm that is instantiating the library.
ports: a list of tuples (name, port, targetPort, nodePort) for every service port.
service_name: allows setting custom name to the patched service. If none given,
application name will be used.
service_type: desired type of K8s service. Default value is in line with ServiceSpec's
default value.
additional_labels: Labels to be added to the kubernetes service (by default only
"app.kubernetes.io/name" is set to the service name)
additional_selectors: Selectors to be added to the kubernetes service (by default only
"app.kubernetes.io/name" is set to the service name)
additional_annotations: Annotations to be added to the kubernetes service.
"""
super().__init__(charm, "kubernetes-service-patch")
self.charm = charm
self.service_name = service_name if service_name else self._app
self.service = self._service_object(
ports,
service_name,
service_type,
additional_labels,
additional_selectors,
additional_annotations,
)
# Make mypy type checking happy that self._patch is a method
assert isinstance(self._patch, MethodType)
# Ensure this patch is applied during the 'install' and 'upgrade-charm' events
self.framework.observe(charm.on.install, self._patch)
self.framework.observe(charm.on.upgrade_charm, self._patch)
def _service_object(
self,
ports: Sequence[PortDefinition],
service_name: str = None,
service_type: ServiceType = "ClusterIP",
additional_labels: dict = None,
additional_selectors: dict = None,
additional_annotations: dict = None,
) -> Service:
"""Creates a valid Service representation.
Args:
ports: a list of tuples of the form (name, port) or (name, port, targetPort)
or (name, port, targetPort, nodePort) for every service port. If the 'targetPort'
is omitted, it is assumed to be equal to 'port', with the exception of NodePort
and LoadBalancer services, where all port numbers have to be specified.
service_name: allows setting custom name to the patched service. If none given,
application name will be used.
service_type: desired type of K8s service. Default value is in line with ServiceSpec's
default value.
additional_labels: Labels to be added to the kubernetes service (by default only
"app.kubernetes.io/name" is set to the service name)
additional_selectors: Selectors to be added to the kubernetes service (by default only
"app.kubernetes.io/name" is set to the service name)
additional_annotations: Annotations to be added to the kubernetes service.
Returns:
Service: A valid representation of a Kubernetes Service with the correct ports.
"""
if not service_name:
service_name = self._app
labels = {"app.kubernetes.io/name": self._app}
if additional_labels:
labels.update(additional_labels)
selector = {"app.kubernetes.io/name": self._app}
if additional_selectors:
selector.update(additional_selectors)
return Service(
apiVersion="v1",
kind="Service",
metadata=ObjectMeta(
namespace=self._namespace,
name=service_name,
labels=labels,
annotations=additional_annotations, # type: ignore[arg-type]
),
spec=ServiceSpec(
selector=selector,
ports=[
ServicePort(
name=p[0],
port=p[1],
targetPort=p[2] if len(p) > 2 else p[1], # type: ignore[misc]
nodePort=p[3] if len(p) > 3 else None, # type: ignore[arg-type, misc]
)
for p in ports
],
type=service_type,
),
)
def _patch(self, _) -> None:
"""Patch the Kubernetes service created by Juju to map the correct port.
Raises:
PatchFailed: if patching fails due to lack of permissions, or otherwise.
"""
if not self.charm.unit.is_leader():
return
client = Client()
try:
if self.service_name != self._app:
self._delete_and_create_service(client)
client.patch(Service, self.service_name, self.service, patch_type=PatchType.MERGE)
except ApiError as e:
if e.status.code == 403:
logger.error("Kubernetes service patch failed: `juju trust` this application.")
else:
logger.error("Kubernetes service patch failed: %s", str(e))
else:
logger.info("Kubernetes service '%s' patched successfully", self._app)
def _delete_and_create_service(self, client: Client):
service = client.get(Service, self._app, namespace=self._namespace)
service.metadata.name = self.service_name # type: ignore[attr-defined]
service.metadata.resourceVersion = service.metadata.uid = None # type: ignore[attr-defined] # noqa: E501
client.delete(Service, self._app, namespace=self._namespace)
client.create(service)
def is_patched(self) -> bool:
"""Reports if the service patch has been applied.
Returns:
bool: A boolean indicating if the service patch has been applied.
"""
client = Client()
# Get the relevant service from the cluster
service = client.get(Service, name=self.service_name, namespace=self._namespace)
# Construct a list of expected ports, should the patch be applied
expected_ports = [(p.port, p.targetPort) for p in self.service.spec.ports]
# Construct a list in the same manner, using the fetched service
fetched_ports = [(p.port, p.targetPort) for p in service.spec.ports] # type: ignore[attr-defined] # noqa: E501
return expected_ports == fetched_ports
@property
def _app(self) -> str:
"""Name of the current Juju application.
Returns:
str: A string containing the name of the current Juju application.
"""
return self.charm.app.name
@property
def _namespace(self) -> str:
"""The Kubernetes namespace we're running in.
Returns:
str: A string containing the name of the current Kubernetes namespace.
"""
with open("/var/run/secrets/kubernetes.io/serviceaccount/namespace", "r") as f:
return f.read().strip()

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"""TODO: Add a proper docstring here.
This is a placeholder docstring for this charm library. Docstrings are
presented on Charmhub and updated whenever you push a new version of the
library.
Complete documentation about creating and documenting libraries can be found
in the SDK docs at https://juju.is/docs/sdk/libraries.
See `charmcraft publish-lib` and `charmcraft fetch-lib` for details of how to
share and consume charm libraries. They serve to enhance collaboration
between charmers. Use a charmer's libraries for classes that handle
integration with their charm.
Bear in mind that new revisions of the different major API versions (v0, v1,
v2 etc) are maintained independently. You can continue to update v0 and v1
after you have pushed v3.
Markdown is supported, following the CommonMark specification.
"""
import logging
import typing
from ops.framework import (
StoredState,
EventBase,
ObjectEvents,
EventSource,
Object,
)
# The unique Charmhub library identifier, never change it
LIBID = "19e5a5857acd4a94a4a759d173d18232"
# Increment this major API version when introducing breaking changes
LIBAPI = 0
# Increment this PATCH version before using `charmcraft publish-lib` or reset
# to 0 if you are raising the major API version
LIBPATCH = 1
# TODO: add your code here! Happy coding!
class OVSDBCMSConnectedEvent(EventBase):
"""OVSDBCMS connected Event."""
pass
class OVSDBCMSReadyEvent(EventBase):
"""OVSDBCMS ready for use Event."""
pass
class OVSDBCMSGoneAwayEvent(EventBase):
"""OVSDBCMS relation has gone-away Event"""
pass
class OVSDBCMSServerEvents(ObjectEvents):
"""Events class for `on`"""
connected = EventSource(OVSDBCMSConnectedEvent)
ready = EventSource(OVSDBCMSReadyEvent)
goneaway = EventSource(OVSDBCMSGoneAwayEvent)
class OVSDBCMSRequires(Object):
"""
OVSDBCMSRequires class
"""
on = OVSDBCMSServerEvents()
_stored = StoredState()
def __init__(self, charm, relation_name: str):
super().__init__(charm, relation_name)
self.charm = charm
self.relation_name = relation_name
self.framework.observe(
self.charm.on[relation_name].relation_joined,
self._on_ovsdb_cms_relation_joined,
)
self.framework.observe(
self.charm.on[relation_name].relation_changed,
self._on_ovsdb_cms_relation_changed,
)
self.framework.observe(
self.charm.on[relation_name].relation_departed,
self._on_ovsdb_cms_relation_changed,
)
self.framework.observe(
self.charm.on[relation_name].relation_broken,
self._on_ovsdb_cms_relation_broken,
)
def _on_ovsdb_cms_relation_joined(self, event):
"""OVSDBCMS relation joined."""
logging.debug("OVSDBCMSRequires on_joined")
self.on.connected.emit()
def bound_addresses(self):
return self.get_all_unit_values("bound-address")
def remote_ready(self):
return all(self.bound_addresses())
def _on_ovsdb_cms_relation_changed(self, event):
"""OVSDBCMS relation changed."""
logging.debug("OVSDBCMSRequires on_changed")
if self.remote_ready():
self.on.ready.emit()
def _on_ovsdb_cms_relation_broken(self, event):
"""OVSDBCMS relation broken."""
logging.debug("OVSDBCMSRequires on_broken")
self.on.goneaway.emit()
def get_all_unit_values(self, key: str) -> typing.List[str]:
"""Retrieve value for key from all related units."""
values = []
relation = self.framework.model.get_relation(self.relation_name)
for unit in relation.units:
values.append(relation.data[unit].get(key))
return values
class OVSDBCMSClientConnectedEvent(EventBase):
"""OVSDBCMS connected Event."""
pass
class OVSDBCMSClientReadyEvent(EventBase):
"""OVSDBCMS ready for use Event."""
pass
class OVSDBCMSClientGoneAwayEvent(EventBase):
"""OVSDBCMS relation has gone-away Event"""
pass
class OVSDBCMSClientEvents(ObjectEvents):
"""Events class for `on`"""
connected = EventSource(OVSDBCMSClientConnectedEvent)
ready = EventSource(OVSDBCMSClientReadyEvent)
goneaway = EventSource(OVSDBCMSClientGoneAwayEvent)
class OVSDBCMSProvides(Object):
"""
OVSDBCMSProvides class
"""
on = OVSDBCMSClientEvents()
_stored = StoredState()
def __init__(self, charm, relation_name):
super().__init__(charm, relation_name)
self.charm = charm
self.relation_name = relation_name
self.framework.observe(
self.charm.on[relation_name].relation_joined,
self._on_ovsdb_cms_relation_joined,
)
self.framework.observe(
self.charm.on[relation_name].relation_changed,
self._on_ovsdb_cms_relation_changed,
)
self.framework.observe(
self.charm.on[relation_name].relation_broken,
self._on_ovsdb_cms_relation_broken,
)
def _on_ovsdb_cms_relation_joined(self, event):
"""Handle ovsdb-cms joined."""
logging.debug("OVSDBCMSProvides on_joined")
self.on.connected.emit()
def _on_ovsdb_cms_relation_changed(self, event):
"""Handle ovsdb-cms changed."""
logging.debug("OVSDBCMSProvides on_changed")
self.on.ready.emit()
def _on_ovsdb_cms_relation_broken(self, event):
"""Handle ovsdb-cms broken."""
logging.debug("OVSDBCMSProvides on_departed")
self.on.goneaway.emit()
def set_unit_data(self, settings: typing.Dict[str, str]) -> None:
"""Publish settings on the peer unit data bag."""
relation = self.framework.model.get_relation(self.relation_name)
for k, v in settings.items():
relation.data[self.model.unit][k] = v

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metadata.yaml Normal file
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name: sunbeam-ovn-relay-operator
summary: Relay for Open Virtual Network for Open vSwitch
maintainer: OpenStack Charmers <openstack-charmers@lists.ubuntu.com>
description: |
In sert description
tags:
- networking
containers:
ovsdb-server:
resource: ovn-sb-db-server-image
resources:
ovn-sb-db-server-image:
type: oci-image
description: OCI image
requires:
ovsdb-cms:
interface: ovsdb-cms
certificates:
interface: tls-certificates
provides:
ovsdb-cms-relay:
interface: ovsdb-cms
peers:
peers:
interface: ovn-relay-peer

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-r requirements.txt
coverage
flake8

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requirements.txt Normal file
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ops
jinja2
git+https://opendev.org/openstack/charm-ops-openstack#egg=ops_openstack
git+https://github.com/openstack-charmers/advanced-sunbeam-openstack#egg=advanced_sunbeam_openstack
lightkube
# These are only needeed if the charm relates to ceph
git+https://github.com/openstack/charm-ops-interface-ceph-client#egg=interface_ceph_client
# Charmhelpers is only present as interface_ceph_client uses it.
git+https://github.com/juju/charm-helpers.git#egg=charmhelpers
cryptography < 3.4
git+https://opendev.org/openstack/charm-ops-interface-tls-certificates#egg=interface_tls_certificates

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#!/bin/sh -e
# Copyright 2022 liam
# See LICENSE file for licensing details.
if [ -z "$VIRTUAL_ENV" -a -d venv/ ]; then
. venv/bin/activate
fi
if [ -z "$PYTHONPATH" ]; then
export PYTHONPATH="lib:src"
else
export PYTHONPATH="lib:src:$PYTHONPATH"
fi
flake8
coverage run --branch --source=src -m unittest -v "$@"
coverage report -m

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#!/usr/bin/env python3
# Copyright 2022 liam
# See LICENSE file for licensing details.
#
# Learn more at: https://juju.is/docs/sdk
"""Charm the service.
Refer to the following post for a quick-start guide that will help you
develop a new k8s charm using the Operator Framework:
https://discourse.charmhub.io/t/4208
"""
import logging
from typing import List
from ops.charm import CharmBase
from ops.framework import StoredState
from ops.main import main
import advanced_sunbeam_openstack.charm as sunbeam_charm
import advanced_sunbeam_openstack.container_handlers as sunbeam_chandlers
import advanced_sunbeam_openstack.core as sunbeam_core
import advanced_sunbeam_openstack.config_contexts as sunbeam_ctxts
from charms.observability_libs.v0.kubernetes_service_patch \
import KubernetesServicePatch
logger = logging.getLogger(__name__)
OVSDB_SERVER = "ovsdb-server"
class OVNRelayPebbleHandler(sunbeam_chandlers.OVNPebbleHandler):
@property
def wrapper_script(self):
return '/root/ovn-relay-wrapper.sh'
@property
def service_description(self):
return 'OVN Relay'
class OVNRelayOperatorCharm(sunbeam_charm.OSBaseOperatorCharm):
"""Charm the service."""
_state = StoredState()
def __init__(self, framework):
super().__init__(framework)
self.service_patcher = KubernetesServicePatch(
self,
[
('southboundrelay', 6642),
]
)
self.configure_charm(None)
def get_pebble_handlers(self):
pebble_handlers = [
OVNRelayPebbleHandler(
self,
OVSDB_SERVER,
'ovn-relay',
self.container_configs,
self.template_dir,
self.openstack_release,
self.configure_charm)]
return pebble_handlers
@property
def config_contexts(self) -> List[sunbeam_ctxts.ConfigContext]:
"""Configuration contexts for the operator."""
contexts = super().config_contexts
contexts.append(
sunbeam_ctxts.OVNDBConfigContext(self, "ovs_db"))
return contexts
class OVNRelayWallabyOperatorCharm(OVNRelayOperatorCharm):
openstack_release = 'wallaby'
if __name__ == "__main__":
# Note: use_juju_for_storage=True required per
# https://github.com/canonical/operator/issues/506
main(OVNRelayWallabyOperatorCharm, use_juju_for_storage=True)

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# {{ certificates }}
{{ certificates.cert }}

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src/templates/key_host.j2 Normal file
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{{ certificates.key }}

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src/templates/ovn-central.crt.j2 Normal file
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{{ certificates.ca_cert }}

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#!/usr/bin/bash
WRAPPER_LOG=/var/log/ovn/service_wrapper.log
function log_msg()
{
msg=$1
echo "$(date): $msg" >> $WRAPPER_LOG
}
function stop_svc()
{
log_msg "Stopping"
}
log_msg "Starting"
REMOTES={{ ovsdb_cms.db_sb_connection_strs }}
# ovsdb-server --remote=ptcp:6642:172.16.0.1 relay:OVN_Southbound:$REMOTES
ovsdb-server \
-vconsole:emer \
-vsyslog:err \
-vfile:info \
-c {{ ovs_db.ovn_cert }} \
-C {{ ovs_db.ovn_ca_cert }} \
-p {{ ovs_db.ovn_key }} \
--no-chdir \
--log-file=/var/log/ovn/ovn-relay.log \
--pidfile=/var/run/ovn/ovn-relay.pid \
--remote=ptcp:6642:{{ ovsdb_cms.local_address }} relay:OVN_Southbound:$REMOTES
trap stop_svc EXIT

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# This file is managed centrally. If you find the need to modify this as a
# one-off, please don't. Intead, consult #openstack-charms and ask about
# requirements management in charms via bot-control. Thank you.
charm-tools>=2.4.4
coverage>=3.6
mock>=1.2
flake8>=2.2.4,<=2.4.1
pyflakes==2.1.1
stestr>=2.2.0
requests>=2.18.4
psutil
# oslo.i18n dropped py35 support
oslo.i18n<4.0.0
git+https://github.com/openstack-charmers/zaza.git#egg=zaza
git+https://github.com/openstack-charmers/zaza-openstack-tests.git#egg=zaza.openstack
pytz # workaround for 14.04 pip/tox
pyudev # for ceph-* charm unit tests (not mocked?)

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tests/__init__.py Normal file
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# Copyright 2022 liam
# See LICENSE file for licensing details.
#
# Learn more about testing at: https://juju.is/docs/sdk/testing
import unittest
from unittest.mock import Mock
from charm import SunbeamOvnRelayOperatorCharm
from ops.model import ActiveStatus
from ops.testing import Harness
class TestCharm(unittest.TestCase):
def setUp(self):
self.harness = Harness(SunbeamOvnRelayOperatorCharm)
self.addCleanup(self.harness.cleanup)
self.harness.begin()
def test_config_changed(self):
self.assertEqual(list(self.harness.charm._stored.things), [])
self.harness.update_config({"thing": "foo"})
self.assertEqual(list(self.harness.charm._stored.things), ["foo"])
def test_action(self):
# the harness doesn't (yet!) help much with actions themselves
action_event = Mock(params={"fail": ""})
self.harness.charm._on_fortune_action(action_event)
self.assertTrue(action_event.set_results.called)
def test_action_fail(self):
action_event = Mock(params={"fail": "fail this"})
self.harness.charm._on_fortune_action(action_event)
self.assertEqual(action_event.fail.call_args, [("fail this",)])
def test_httpbin_pebble_ready(self):
# Check the initial Pebble plan is empty
initial_plan = self.harness.get_container_pebble_plan("httpbin")
self.assertEqual(initial_plan.to_yaml(), "{}\n")
# Expected plan after Pebble ready with default config
expected_plan = {
"services": {
"httpbin": {
"override": "replace",
"summary": "httpbin",
"command": "gunicorn -b 0.0.0.0:80 httpbin:app -k gevent",
"startup": "enabled",
"environment": {"thing": "🎁"},
}
},
}
# Get the httpbin container from the model
container = self.harness.model.unit.get_container("httpbin")
# Emit the PebbleReadyEvent carrying the httpbin container
self.harness.charm.on.httpbin_pebble_ready.emit(container)
# Get the plan now we've run PebbleReady
updated_plan = self.harness.get_container_pebble_plan("httpbin").to_dict()
# Check we've got the plan we expected
self.assertEqual(expected_plan, updated_plan)
# Check the service was started
service = self.harness.model.unit.get_container("httpbin").get_service("httpbin")
self.assertTrue(service.is_running())
# Ensure we set an ActiveStatus with no message
self.assertEqual(self.harness.model.unit.status, ActiveStatus())

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# Operator charm (with zaza): tox.ini
[tox]
envlist = pep8,py3
skipsdist = True
# NOTE: Avoid build/test env pollution by not enabling sitepackages.
sitepackages = False
# NOTE: Avoid false positives by not skipping missing interpreters.
skip_missing_interpreters = False
# NOTES:
# * We avoid the new dependency resolver by pinning pip < 20.3, see
# https://github.com/pypa/pip/issues/9187
# * Pinning dependencies requires tox >= 3.2.0, see
# https://tox.readthedocs.io/en/latest/config.html#conf-requires
# * It is also necessary to pin virtualenv as a newer virtualenv would still
# lead to fetching the latest pip in the func* tox targets, see
# https://stackoverflow.com/a/38133283
requires = pip < 20.3
virtualenv < 20.0
# NOTE: https://wiki.canonical.com/engineering/OpenStack/InstallLatestToxOnOsci
minversion = 3.2.0
[testenv]
setenv = VIRTUAL_ENV={envdir}
PYTHONHASHSEED=0
CHARM_DIR={envdir}
install_command =
pip install {opts} {packages}
commands = stestr run --slowest {posargs}
whitelist_externals =
git
add-to-archive.py
bash
charmcraft
passenv = HOME TERM CS_* OS_* TEST_*
deps = -r{toxinidir}/test-requirements.txt
[testenv:py35]
basepython = python3.5
# python3.5 is irrelevant on a focal+ charm.
commands = /bin/true
[testenv:py36]
basepython = python3.6
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
[testenv:py37]
basepython = python3.7
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
[testenv:py38]
basepython = python3.8
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
[testenv:py3]
basepython = python3
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
[testenv:pep8]
basepython = python3
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
commands = flake8 {posargs} src unit_tests tests
[testenv:cover]
# Technique based heavily upon
# https://github.com/openstack/nova/blob/master/tox.ini
basepython = python3
deps = -r{toxinidir}/requirements.txt
-r{toxinidir}/test-requirements.txt
setenv =
{[testenv]setenv}
PYTHON=coverage run
commands =
coverage erase
stestr run --slowest {posargs}
coverage combine
coverage html -d cover
coverage xml -o cover/coverage.xml
coverage report
[coverage:run]
branch = True
concurrency = multiprocessing
parallel = True
source =
.
omit =
.tox/*
*/charmhelpers/*
unit_tests/*
[testenv:venv]
basepython = python3
commands = {posargs}
[testenv:build]
basepython = python3
deps = -r{toxinidir}/build-requirements.txt
commands =
charmcraft build
[testenv:func-noop]
basepython = python3
commands =
functest-run-suite --help
[testenv:func]
basepython = python3
commands =
functest-run-suite --keep-model
[testenv:func-smoke]
basepython = python3
commands =
functest-run-suite --keep-model --smoke
[testenv:func-dev]
basepython = python3
commands =
functest-run-suite --keep-model --dev
[testenv:func-target]
basepython = python3
commands =
functest-run-suite --keep-model --bundle {posargs}
[flake8]
# Ignore E902 because the unit_tests directory is missing in the built charm.
ignore = E402,E226,E902