DockerCLI/cli/command/stack/kubernetes/conversion_test.go

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package kubernetes
import (
"testing"
"github.com/docker/cli/cli/command/service"
"github.com/docker/compose-on-kubernetes/api/labels"
"github.com/docker/docker/api/types/swarm"
"gotest.tools/assert"
appsv1beta2 "k8s.io/api/apps/v1beta2"
apiv1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
apimachineryTypes "k8s.io/apimachinery/pkg/types"
apimachineryUtil "k8s.io/apimachinery/pkg/util/intstr"
)
func TestReplicasConversionNeedsAService(t *testing.T) {
replicas := appsv1beta2.ReplicaSetList{
Items: []appsv1beta2.ReplicaSet{makeReplicaSet("unknown", 0, 0)},
}
services := apiv1.ServiceList{}
_, _, err := convertToServices(&replicas, &appsv1beta2.DaemonSetList{}, &services)
assert.ErrorContains(t, err, "could not find service")
}
func TestKubernetesServiceToSwarmServiceConversion(t *testing.T) {
testCases := []struct {
replicas *appsv1beta2.ReplicaSetList
services *apiv1.ServiceList
expectedServices []swarm.Service
expectedListInfo map[string]service.ListInfo
}{
// Match replicas with headless stack services
{
&appsv1beta2.ReplicaSetList{
Items: []appsv1beta2.ReplicaSet{
makeReplicaSet("service1", 2, 5),
makeReplicaSet("service2", 3, 3),
},
},
&apiv1.ServiceList{
Items: []apiv1.Service{
makeKubeService("service1", "stack", "uid1", apiv1.ServiceTypeClusterIP, nil),
makeKubeService("service2", "stack", "uid2", apiv1.ServiceTypeClusterIP, nil),
makeKubeService("service3", "other-stack", "uid2", apiv1.ServiceTypeClusterIP, nil),
},
},
[]swarm.Service{
makeSwarmService("stack_service1", "uid1", nil),
makeSwarmService("stack_service2", "uid2", nil),
},
map[string]service.ListInfo{
"uid1": {Mode: "replicated", Replicas: "2/5"},
"uid2": {Mode: "replicated", Replicas: "3/3"},
},
},
// Headless service and LoadBalancer Service are tied to the same Swarm service
{
&appsv1beta2.ReplicaSetList{
Items: []appsv1beta2.ReplicaSet{
makeReplicaSet("service", 1, 1),
},
},
&apiv1.ServiceList{
Items: []apiv1.Service{
makeKubeService("service", "stack", "uid1", apiv1.ServiceTypeClusterIP, nil),
makeKubeService("service-published", "stack", "uid2", apiv1.ServiceTypeLoadBalancer, []apiv1.ServicePort{
{
Port: 80,
TargetPort: apimachineryUtil.FromInt(80),
Protocol: apiv1.ProtocolTCP,
},
}),
},
},
[]swarm.Service{
makeSwarmService("stack_service", "uid1", []swarm.PortConfig{
{
PublishMode: swarm.PortConfigPublishModeIngress,
PublishedPort: 80,
TargetPort: 80,
Protocol: swarm.PortConfigProtocolTCP,
},
}),
},
map[string]service.ListInfo{
"uid1": {Mode: "replicated", Replicas: "1/1"},
},
},
// Headless service and NodePort Service are tied to the same Swarm service
{
&appsv1beta2.ReplicaSetList{
Items: []appsv1beta2.ReplicaSet{
makeReplicaSet("service", 1, 1),
},
},
&apiv1.ServiceList{
Items: []apiv1.Service{
makeKubeService("service", "stack", "uid1", apiv1.ServiceTypeClusterIP, nil),
makeKubeService("service-random-ports", "stack", "uid2", apiv1.ServiceTypeNodePort, []apiv1.ServicePort{
{
Port: 35666,
TargetPort: apimachineryUtil.FromInt(80),
Protocol: apiv1.ProtocolTCP,
},
}),
},
},
[]swarm.Service{
makeSwarmService("stack_service", "uid1", []swarm.PortConfig{
{
PublishMode: swarm.PortConfigPublishModeHost,
PublishedPort: 35666,
TargetPort: 80,
Protocol: swarm.PortConfigProtocolTCP,
},
}),
},
map[string]service.ListInfo{
"uid1": {Mode: "replicated", Replicas: "1/1"},
},
},
}
for _, tc := range testCases {
swarmServices, listInfo, err := convertToServices(tc.replicas, &appsv1beta2.DaemonSetList{}, tc.services)
assert.NilError(t, err)
assert.DeepEqual(t, tc.expectedServices, swarmServices)
assert.DeepEqual(t, tc.expectedListInfo, listInfo)
}
}
func makeReplicaSet(service string, available, replicas int32) appsv1beta2.ReplicaSet {
return appsv1beta2.ReplicaSet{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
labels.ForServiceName: service,
},
},
Spec: appsv1beta2.ReplicaSetSpec{
Template: apiv1.PodTemplateSpec{
Spec: apiv1.PodSpec{
Containers: []apiv1.Container{
{
Image: "image",
},
},
},
},
},
Status: appsv1beta2.ReplicaSetStatus{
AvailableReplicas: available,
Replicas: replicas,
},
}
}
func makeKubeService(service, stack, uid string, serviceType apiv1.ServiceType, ports []apiv1.ServicePort) apiv1.Service {
return apiv1.Service{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
labels.ForStackName: stack,
},
Name: service,
UID: apimachineryTypes.UID(uid),
},
Spec: apiv1.ServiceSpec{
Type: serviceType,
Ports: ports,
},
}
}
func makeSwarmService(service, id string, ports []swarm.PortConfig) swarm.Service {
return swarm.Service{
ID: id,
Spec: swarm.ServiceSpec{
Annotations: swarm.Annotations{
Name: service,
},
TaskTemplate: swarm.TaskSpec{
ContainerSpec: &swarm.ContainerSpec{
Image: "image",
},
},
},
Endpoint: swarm.Endpoint{
Ports: ports,
},
}
}