forked from LaconicNetwork/kompose
391 lines
14 KiB
Go
391 lines
14 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubernetes
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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deployapi "github.com/openshift/origin/pkg/deploy/api"
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"github.com/kubernetes-incubator/kompose/pkg/kobject"
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"github.com/kubernetes-incubator/kompose/pkg/transformer"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/apis/extensions"
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)
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func newServiceConfig() kobject.ServiceConfig {
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return kobject.ServiceConfig{
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ContainerName: "name",
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Image: "image",
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Environment: []kobject.EnvVar{kobject.EnvVar{Name: "env", Value: "value"}},
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Port: []kobject.Ports{kobject.Ports{HostPort: 123, ContainerPort: 456, Protocol: api.ProtocolTCP}},
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Command: []string{"cmd"},
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WorkingDir: "dir",
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Args: []string{"arg1", "arg2"},
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Volumes: []string{"/tmp/volume"},
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Network: []string{"network1", "network2"}, // not supported
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Labels: nil,
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Annotations: map[string]string{"abc": "def"},
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CPUSet: "cpu_set", // not supported
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CPUShares: 1, // not supported
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CPUQuota: 1, // not supported
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CapAdd: []string{"cap_add"}, // not supported
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CapDrop: []string{"cap_drop"}, // not supported
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Expose: []string{"expose"}, // not supported
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Privileged: true,
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Restart: "always",
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User: "user", // not supported
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}
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}
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func newKomposeObject() kobject.KomposeObject {
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return kobject.KomposeObject{
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ServiceConfigs: map[string]kobject.ServiceConfig{"app": newServiceConfig()},
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}
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}
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func equalStringSlice(s1, s2 []string) bool {
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if len(s1) != len(s2) {
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return false
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}
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for i := range s1 {
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if s1[i] != s1[i] {
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return false
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}
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}
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return true
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}
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func equalEnv(kEnvs []kobject.EnvVar, k8sEnvs []api.EnvVar) bool {
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if len(kEnvs) != len(k8sEnvs) {
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return false
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}
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for _, kEnv := range kEnvs {
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found := false
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for _, k8sEnv := range k8sEnvs {
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if kEnv.Name == k8sEnv.Name && kEnv.Value == k8sEnv.Value {
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found = true
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}
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}
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if !found {
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return false
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}
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}
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return true
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}
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func equalPorts(kPorts []kobject.Ports, k8sPorts []api.ContainerPort) bool {
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if len(kPorts) != len(k8sPorts) {
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return false
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}
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for _, kPort := range kPorts {
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found := false
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for _, k8sPort := range k8sPorts {
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// FIXME: HostPort should be copied to container port
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//if kPort.HostPort == k8sPort.HostPort && kPort.Protocol == k8sPort.Protocol && kPort.ContainerPort == k8sPort.ContainerPort {
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if kPort.Protocol == k8sPort.Protocol && kPort.ContainerPort == k8sPort.ContainerPort {
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found = true
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}
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// Name and HostIp shouldn't be set
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if len(k8sPort.Name) != 0 || len(k8sPort.HostIP) != 0 {
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return false
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}
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}
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if !found {
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return false
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}
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}
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return true
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}
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func equalStringMaps(map1 map[string]string, map2 map[string]string) bool {
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if len(map1) != len(map2) {
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return false
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}
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for k, v := range map1 {
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if map2[k] != v {
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return false
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}
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}
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return true
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}
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func checkPodTemplate(config kobject.ServiceConfig, template api.PodTemplateSpec, expectedLabels map[string]string) error {
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if len(template.Spec.Containers) == 0 {
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return fmt.Errorf("Failed to set container: %#v vs. %#v", config, template)
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}
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container := template.Spec.Containers[0]
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if config.ContainerName != container.Name {
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return fmt.Errorf("Found different container name: %v vs. %v", config.ContainerName, container.Name)
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}
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if config.Image != container.Image {
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return fmt.Errorf("Found different container image: %v vs. %v", config.Image, container.Image)
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}
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if !equalEnv(config.Environment, container.Env) {
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return fmt.Errorf("Found different container env: %#v vs. %#v", config.Environment, container.Env)
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}
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if !equalPorts(config.Port, container.Ports) {
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return fmt.Errorf("Found different container ports: %#v vs. %#v", config.Port, container.Ports)
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}
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if !equalStringSlice(config.Command, container.Command) {
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return fmt.Errorf("Found different container cmd: %#v vs. %#v", config.Command, container.Command)
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}
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if config.WorkingDir != container.WorkingDir {
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return fmt.Errorf("Found different container WorkingDir: %#v vs. %#v", config.WorkingDir, container.WorkingDir)
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}
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if !equalStringSlice(config.Args, container.Args) {
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return fmt.Errorf("Found different container args: %#v vs. %#v", config.Args, container.Args)
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}
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if len(template.Spec.Volumes) == 0 || len(template.Spec.Volumes[0].Name) == 0 || template.Spec.Volumes[0].VolumeSource.PersistentVolumeClaim == nil {
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return fmt.Errorf("Found incorrect volumes: %v vs. %#v", config.Volumes, template.Spec.Volumes)
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}
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// We only set controller labels here and k8s server will take care of other defaults, such as selectors
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if !equalStringMaps(expectedLabels, template.Labels) {
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return fmt.Errorf("Found different template labels: %#v vs. %#v", expectedLabels, template.Labels)
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}
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restartPolicyMapping := map[string]api.RestartPolicy{"always": api.RestartPolicyAlways}
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if restartPolicyMapping[config.Restart] != template.Spec.RestartPolicy {
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return fmt.Errorf("Found incorrect restart policy: %v vs. %v", config.Restart, template.Spec.RestartPolicy)
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}
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if config.Privileged == privilegedNilOrFalse(template) {
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return fmt.Errorf("Found different template privileged: %#v vs. %#v", config.Privileged, template.Spec.Containers[0].SecurityContext)
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}
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return nil
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}
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func privilegedNilOrFalse(template api.PodTemplateSpec) bool {
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return len(template.Spec.Containers) == 0 || template.Spec.Containers[0].SecurityContext == nil ||
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template.Spec.Containers[0].SecurityContext.Privileged == nil || *template.Spec.Containers[0].SecurityContext.Privileged == false
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}
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func checkService(config kobject.ServiceConfig, svc *api.Service, expectedLabels map[string]string) error {
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if !equalStringMaps(expectedLabels, svc.Spec.Selector) {
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return fmt.Errorf("Found unexpected selector: %#v vs. %#v", expectedLabels, svc.Spec.Selector)
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}
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// TODO: finish this
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return nil
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}
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func checkMeta(config kobject.ServiceConfig, meta api.ObjectMeta, expectedName string, shouldSetLabels bool) error {
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if expectedName != meta.Name {
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return fmt.Errorf("Found unexpected name: %s vs. %s", expectedName, meta.Name)
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}
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if !equalStringMaps(config.Annotations, meta.Annotations) {
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return fmt.Errorf("Found different annotations: %#v vs. %#v", config.Annotations, meta.Annotations)
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}
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if shouldSetLabels != (len(meta.Labels) > 0) {
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return fmt.Errorf("Unexpected labels: %#v", meta.Labels)
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}
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return nil
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}
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func TestKomposeConvert(t *testing.T) {
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replicas := 3
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testCases := map[string]struct {
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komposeObject kobject.KomposeObject
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opt kobject.ConvertOptions
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expectedNumObjs int
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}{
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// objects generated are deployment, service and pvc
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"Convert to Deployments (D)": {newKomposeObject(), kobject.ConvertOptions{CreateD: true, Replicas: replicas}, 3},
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"Convert to DaemonSets (DS)": {newKomposeObject(), kobject.ConvertOptions{CreateDS: true}, 3},
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"Convert to ReplicationController (RC)": {newKomposeObject(), kobject.ConvertOptions{CreateRC: true, Replicas: replicas}, 3},
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// objects generated are deployment, daemonset, ReplicationController, service and pvc
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"Convert to D, DS, and RC": {newKomposeObject(), kobject.ConvertOptions{CreateD: true, CreateDS: true, CreateRC: true, Replicas: replicas}, 5},
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// TODO: add more tests
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}
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for name, test := range testCases {
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t.Log("Test case:", name)
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k := Kubernetes{}
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// Run Transform
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objs := k.Transform(test.komposeObject, test.opt)
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if len(objs) != test.expectedNumObjs {
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t.Errorf("Expected %d objects returned, got %d", test.expectedNumObjs, len(objs))
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}
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var foundSVC, foundD, foundDS, foundRC, foundDC bool
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name := "app"
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labels := transformer.ConfigLabels(name)
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config := test.komposeObject.ServiceConfigs[name]
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// Check results
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for _, obj := range objs {
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if svc, ok := obj.(*api.Service); ok {
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if err := checkService(config, svc, labels); err != nil {
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t.Errorf("%v", err)
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}
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if err := checkMeta(config, svc.ObjectMeta, name, true); err != nil {
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t.Errorf("%v", err)
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}
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foundSVC = true
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}
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if test.opt.CreateD {
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if d, ok := obj.(*extensions.Deployment); ok {
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if err := checkPodTemplate(config, d.Spec.Template, labels); err != nil {
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t.Errorf("%v", err)
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}
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if err := checkMeta(config, d.ObjectMeta, name, false); err != nil {
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t.Errorf("%v", err)
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}
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if (int)(d.Spec.Replicas) != replicas {
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t.Errorf("Expected %d replicas, got %d", replicas, d.Spec.Replicas)
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}
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if d.Spec.Selector != nil && len(d.Spec.Selector.MatchLabels) > 0 {
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t.Errorf("Expect selector be unset, got: %#v", d.Spec.Selector)
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}
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foundD = true
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}
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}
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if test.opt.CreateDS {
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if ds, ok := obj.(*extensions.DaemonSet); ok {
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if err := checkPodTemplate(config, ds.Spec.Template, labels); err != nil {
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t.Errorf("%v", err)
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}
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if err := checkMeta(config, ds.ObjectMeta, name, false); err != nil {
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t.Errorf("%v", err)
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}
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if ds.Spec.Selector != nil && len(ds.Spec.Selector.MatchLabels) > 0 {
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t.Errorf("Expect selector be unset, got: %#v", ds.Spec.Selector)
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}
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foundDS = true
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}
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}
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if test.opt.CreateRC {
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if rc, ok := obj.(*api.ReplicationController); ok {
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if err := checkPodTemplate(config, *rc.Spec.Template, labels); err != nil {
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t.Errorf("%v", err)
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}
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if err := checkMeta(config, rc.ObjectMeta, name, false); err != nil {
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t.Errorf("%v", err)
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}
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if (int)(rc.Spec.Replicas) != replicas {
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t.Errorf("Expected %d replicas, got %d", replicas, rc.Spec.Replicas)
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}
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if len(rc.Spec.Selector) > 0 {
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t.Errorf("Expect selector be unset, got: %#v", rc.Spec.Selector)
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}
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foundRC = true
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}
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}
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// TODO: k8s & openshift transformer is now separated; either separate the test or combine the transformer
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if test.opt.CreateDeploymentConfig {
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if dc, ok := obj.(*deployapi.DeploymentConfig); ok {
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if err := checkPodTemplate(config, *dc.Spec.Template, labels); err != nil {
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t.Errorf("%v", err)
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}
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if err := checkMeta(config, dc.ObjectMeta, name, false); err != nil {
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t.Errorf("%v", err)
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}
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if (int)(dc.Spec.Replicas) != replicas {
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t.Errorf("Expected %d replicas, got %d", replicas, dc.Spec.Replicas)
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}
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if len(dc.Spec.Selector) > 0 {
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t.Errorf("Expect selector be unset, got: %#v", dc.Spec.Selector)
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}
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foundDC = true
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}
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}
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}
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if !foundSVC {
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t.Errorf("Unexpected Service not created")
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}
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if test.opt.CreateD != foundD {
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t.Errorf("Expected create Deployment: %v, found Deployment: %v", test.opt.CreateD, foundD)
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}
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if test.opt.CreateDS != foundDS {
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t.Errorf("Expected create Daemon Set: %v, found Daemon Set: %v", test.opt.CreateDS, foundDS)
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}
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if test.opt.CreateRC != foundRC {
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t.Errorf("Expected create Replication Controller: %v, found Replication Controller: %v", test.opt.CreateRC, foundRC)
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}
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if test.opt.CreateDeploymentConfig != foundDC {
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t.Errorf("Expected create Deployment Config: %v, found Deployment Config: %v", test.opt.CreateDeploymentConfig, foundDC)
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}
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}
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}
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func TestConvertRestartOptions(t *testing.T) {
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var opt kobject.ConvertOptions
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var k Kubernetes
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testCases := map[string]struct {
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svc kobject.KomposeObject
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restartPolicy api.RestartPolicy
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}{
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"'restart' is set to 'no'": {kobject.KomposeObject{ServiceConfigs: map[string]kobject.ServiceConfig{"app": kobject.ServiceConfig{Image: "foobar", Restart: "no"}}}, api.RestartPolicyNever},
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"'restart' is set to 'on-failure'": {kobject.KomposeObject{ServiceConfigs: map[string]kobject.ServiceConfig{"app": kobject.ServiceConfig{Image: "foobar", Restart: "on-failure"}}}, api.RestartPolicyOnFailure},
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}
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for name, test := range testCases {
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t.Log("Test Case:", name)
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objs := k.Transform(test.svc, opt)
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if len(objs) != 1 {
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t.Errorf("Expected only one pod, more elements generated.")
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}
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for _, obj := range objs {
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if pod, ok := obj.(*api.Pod); ok {
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if pod.Spec.RestartPolicy != test.restartPolicy {
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t.Errorf("Expected restartPolicy as %s, got %#v", test.restartPolicy, pod.Spec.RestartPolicy)
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}
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} else {
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t.Errorf("Expected 'pod' object not found one")
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}
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}
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}
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}
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// TestUnsupportedKeys test checkUnsupportedKey function
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func TestUnsupportedKeys(t *testing.T) {
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kobjectWithBuild := newKomposeObject()
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kobjectWithBuild.LoadedFrom = "compose"
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serviceConfig := kobjectWithBuild.ServiceConfigs["app"]
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serviceConfig.Build = "./asdf"
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serviceConfig.Network = []string{}
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kobjectWithBuild.ServiceConfigs = map[string]kobject.ServiceConfig{"app": serviceConfig}
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// define all test cases for checkUnsupportedKey function
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testCases := map[string]struct {
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bundleFile kobject.KomposeObject
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expectedUnsupportedKeys []string
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}{
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"Full Bundle": {
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kobjectWithBuild,
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[]string{"build"},
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},
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}
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k := Kubernetes{}
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for name, test := range testCases {
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t.Log("Test case:", name)
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keys := k.CheckUnsupportedKey(&test.bundleFile, unsupportedKey)
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if !reflect.DeepEqual(keys, test.expectedUnsupportedKeys) {
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t.Errorf("ERROR: Expecting unsupported keys: ['%s']. Got: ['%s']", strings.Join(test.expectedUnsupportedKeys, "', '"), strings.Join(keys, "', '"))
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}
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}
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}
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