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:
client.patch(Service,
self._app,
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)
async def test_seldon_deployment(ops_test: OpsTest):
namespace = ops_test.model_name
client = Client()
this_ns = client.get(res=Namespace, name=namespace)
this_ns.metadata.labels.update({"serving.kubeflow.org/inferenceservice": "enabled"})
client.patch(res=Namespace, name=this_ns.metadata.name, obj=this_ns)
SeldonDeployment = create_namespaced_resource(
group="machinelearning.seldon.io",
version="v1",
kind="seldondeployment",
plural="seldondeployments",
verbs=None,
)
with open("examples/serve-simple-v1.yaml") as f:
sdep = SeldonDeployment(yaml.safe_load(f.read()))
client.create(sdep, namespace=namespace)
for i in range(30):
dep = client.get(SeldonDeployment, "seldon-model", namespace=namespace)
state = dep.get("status", {}).get("state")
if state == "Available":
logger.info(f"SeldonDeployment status == {state}")
break
else:
logger.info(f"SeldonDeployment status == {state} (waiting for 'Available')")
time.sleep(5)
else:
pytest.fail("Waited too long for seldondeployment/seldon-model!")
service_name = "seldon-model-example-classifier"
service = client.get(Service, name=service_name, namespace=namespace)
service_ip = service.spec.clusterIP
service_port = next(p for p in service.spec.ports if p.name == "http").port
response = requests.post(
f"http://{service_ip}:{service_port}/predict",
json={
"data": {
"names": ["a", "b"],
"tensor": {"shape": [2, 2], "values": [0, 0, 1, 1]},
}
},
)
response.raise_for_status()
response = response.json()
assert response["data"]["names"] == ["proba"]
assert response["data"]["tensor"]["shape"] == [2, 1]
assert response["meta"] == {}
def test_patch_global(client: lightkube.Client):
req = respx.patch("https://localhost:9443/api/v1/nodes/xx").respond(json={'metadata': {'name': 'xx'}})
node = client.patch(Node, "xx", [{"op": "add", "path": "/metadata/labels/x", "value": "y"}],
patch_type=types.PatchType.JSON)
assert node.metadata.name == 'xx'
assert req.calls[0][0].headers['Content-Type'] == "application/json-patch+json"
# PatchType.APPLY + force
req = respx.patch("https://localhost:9443/api/v1/nodes/xy?fieldManager=test&force=true").respond(
json={'metadata': {'name': 'xy'}})
node = client.patch(Node, "xy", Pod(metadata=ObjectMeta(labels={'l': 'ok'})),
patch_type=types.PatchType.APPLY, field_manager='test', force=True)
assert node.metadata.name == 'xy'
assert req.calls[0][0].headers['Content-Type'] == "application/apply-patch+yaml"
def set_manifest(manifest):
client = Client()
errors = []
for resource in manifest:
try:
client.create(resource)
except ApiError as err:
if err.status.reason == "AlreadyExists":
client.patch(type(resource), resource.metadata.name,
resource)
else:
errors.append(err)
return errors
def test_namespaced_methods(obj_name):
client = Client()
config = ConfigMap(
metadata=ObjectMeta(name=obj_name, namespace='default'),
data={'key1': 'value1', 'key2': 'value2'}
)
# create
config = client.create(config)
try:
assert config.metadata.name == obj_name
assert config.data['key1'] == 'value1'
assert config.data['key2'] == 'value2'
# replace
config.data['key1'] = 'new value'
config = client.replace(config)
assert config.data['key1'] == 'new value'
assert config.data['key2'] == 'value2'
# patch with PatchType.STRATEGIC
patch = {'metadata': {'labels': {'app': 'xyz'}}}
config = client.patch(ConfigMap, name=obj_name, obj=patch)
assert config.metadata.labels['app'] == 'xyz'
# get
config2 = client.get(ConfigMap, name=obj_name)
assert config.metadata.creationTimestamp == config2.metadata.creationTimestamp
# list
configs = [config.metadata.name for config in client.list(ConfigMap)]
assert obj_name in configs
finally:
client.delete(ConfigMap, name=obj_name)
def test_patching(obj_name):
client = Client()
service = Service(
metadata=ObjectMeta(name=obj_name),
spec=ServiceSpec(
ports=[ServicePort(name='a', port=80, targetPort=8080)],
selector={'app': 'not-existing'}
)
)
# create
client.create(service)
try:
# patch with PatchType.STRATEGIC
patch = {'spec': {'ports': [{'name': 'b', 'port':81, 'targetPort': 8081}]}}
service = client.patch(Service, name=obj_name, obj=patch)
assert len(service.spec.ports) == 2
assert {port.name for port in service.spec.ports} == {'a', 'b'}
# strategic - patch merge key: port
# we also try to send a Resource type for patching
patch = Service(spec=ServiceSpec(ports=[ServicePort(name='b', port=81, targetPort=8082)]))
service = client.patch(Service, name=obj_name, obj=patch)
assert len(service.spec.ports) == 2
for port in service.spec.ports:
if port.port == 81:
assert port.targetPort == 8082
# patch with PatchType.MERGE
# merge will replace the full list
patch = {'spec': {'ports': [{'name': 'b', 'port': 81, 'targetPort': 8081}]}}
service = client.patch(Service, name=obj_name, obj=patch, patch_type=PatchType.MERGE)
assert len(service.spec.ports) == 1
assert service.spec.ports[0].port == 81
# patch with PatchType.JSON
patch = [
{'op': 'add', 'path': '/spec/ports/-', 'value': {'name': 'a', 'port': 80, 'targetPort': 8080}}
]
service = client.patch(Service, name=obj_name, obj=patch, patch_type=PatchType.JSON)
assert len(service.spec.ports) == 2
assert service.spec.ports[1].port == 80
finally:
client.delete(Service, name=obj_name)
def test_patch_namespaced(client: lightkube.Client):
# Default PatchType.STRATEGIC
req = respx.patch("https://localhost:9443/api/v1/namespaces/default/pods/xx").respond(json={'metadata': {'name': 'xx'}})
pod = client.patch(Pod, "xx", Pod(metadata=ObjectMeta(labels={'l': 'ok'})))
assert pod.metadata.name == 'xx'
assert req.calls[0][0].headers['Content-Type'] == "application/strategic-merge-patch+json"
# PatchType.MERGE
req = respx.patch("https://localhost:9443/api/v1/namespaces/other/pods/xx").respond(json={'metadata': {'name': 'xx'}})
pod = client.patch(Pod, "xx", Pod(metadata=ObjectMeta(labels={'l': 'ok'})), namespace='other',
patch_type=types.PatchType.MERGE, force=True)
assert pod.metadata.name == 'xx'
assert req.calls[0][0].headers['Content-Type'] == "application/merge-patch+json"
assert 'force' not in str(req.calls[0][0].url) # force is ignored for non APPLY patch types
# PatchType.APPLY
req = respx.patch("https://localhost:9443/api/v1/namespaces/other/pods/xy?fieldManager=test").respond(
json={'metadata': {'name': 'xy'}})
pod = client.patch(Pod, "xy", Pod(metadata=ObjectMeta(labels={'l': 'ok'})), namespace='other',
patch_type=types.PatchType.APPLY, field_manager='test')
assert pod.metadata.name == 'xy'
assert req.calls[0][0].headers['Content-Type'] == "application/apply-patch+yaml"
# PatchType.APPLY + force
req = respx.patch("https://localhost:9443/api/v1/namespaces/other/pods/xz?fieldManager=test&force=true").respond(
json={'metadata': {'name': 'xz'}})
pod = client.patch(Pod, "xz", Pod(metadata=ObjectMeta(labels={'l': 'ok'})), namespace='other',
patch_type=types.PatchType.APPLY, field_manager='test', force=True)
assert pod.metadata.name == 'xz'
assert req.calls[0][0].headers['Content-Type'] == "application/apply-patch+yaml"
# PatchType.APPLY without field_manager
with pytest.raises(ValueError, match="field_manager"):
client.patch(Pod, "xz", Pod(metadata=ObjectMeta(labels={'l': 'ok'})), namespace='other',
patch_type=types.PatchType.APPLY)
def test_apply(obj_name):
client = Client(field_manager='lightkube')
config = ConfigMap(
apiVersion='v1', # apiVersion and kind are required for server-side apply
kind='ConfigMap',
metadata=ObjectMeta(name=obj_name, namespace='default'),
data={'key1': 'value1', 'key2': 'value2'}
)
# create with apply
c = client.apply(config)
try:
assert c.metadata.name == obj_name
assert c.data['key1'] == 'value1'
assert c.data['key2'] == 'value2'
# modify
config.data['key2'] = 'new value'
del config.data['key1']
config.data['key3'] = 'value3'
c = client.apply(config)
assert c.data['key2'] == 'new value'
assert c.data['key3'] == 'value3'
assert 'key1' not in c.data
# remove all keys
config.data.clear()
c = client.apply(config)
assert not c.data
# use the patch equivalent
config.data['key1'] = 'new value'
c = client.patch(ConfigMap, obj_name, config.to_dict(), patch_type=PatchType.APPLY)
assert c.data['key1'] == 'new value'
finally:
client.delete(ConfigMap, name=obj_name)
