/
resources.go
177 lines (145 loc) · 5.16 KB
/
resources.go
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package k8s
import (
"fmt"
"strconv"
"strings"
"github.com/Aptomi/aptomi/pkg/event"
"github.com/Aptomi/aptomi/pkg/plugin"
"k8s.io/api/apps/v1beta1"
"k8s.io/api/core/v1"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
)
var resourceRegistry = buildResourceRegistry()
// ResourcesForManifest returns resources for specified manifest
func (p *Plugin) ResourcesForManifest(namespace, deployName, targetManifest string, eventLog *event.Log) (plugin.Resources, error) {
kubeClient, err := p.NewClient()
if err != nil {
return nil, err
}
helmKube := p.NewHelmKube(deployName, eventLog)
infos, err := helmKube.BuildUnstructured(namespace, strings.NewReader(targetManifest))
if err != nil {
return nil, err
}
resources := make(plugin.Resources)
for _, info := range infos {
gvk := info.ResourceMapping().GroupVersionKind
resourceType := "k8s/" + gvk.Kind
if !resourceRegistry.IsSupported(resourceType) {
continue
}
table, exist := resources[resourceType]
if !exist {
table = &plugin.ResourceTable{}
resources[resourceType] = table
table.Headers = resourceRegistry.Headers(resourceType)
}
var getErr error
var obj interface{}
switch kind := info.Mapping.GroupVersionKind.Kind; kind {
case "Service": // nolint: goconst
obj, getErr = kubeClient.CoreV1().Services(namespace).Get(info.Name, meta.GetOptions{})
case "ConfigMap":
//obj, getErr = kubeClient.CoreV1().ConfigMaps(p.Namespace).Get(info.Name, meta.GetOptions{})
case "Secret":
//obj, getErr = kubeClient.CoreV1().Secrets(p.Namespace).Get(info.Name, meta.GetOptions{})
case "PersistentVolumeClaim":
//obj, getErr = kubeClient.CoreV1().PersistentVolumeClaims(p.Namespace).Get(info.Name, meta.GetOptions{})
case "Deployment":
obj, getErr = kubeClient.AppsV1beta1().Deployments(namespace).Get(info.Name, meta.GetOptions{})
case "StatefulSet":
obj, getErr = kubeClient.AppsV1beta1().StatefulSets(namespace).Get(info.Name, meta.GetOptions{})
case "Job":
//obj, getErr = kubeClient.BatchV1().Jobs(p.Namespace).Get(info.Name, meta.GetOptions{})
}
if getErr != nil {
return nil, getErr
}
// missing object or don't know how to load it
if obj == nil {
continue
}
table.Items = append(table.Items, resourceRegistry.Handle(resourceType, obj))
}
return resources, nil
}
func buildResourceRegistry() *plugin.ResourceRegistry {
reg := plugin.NewResourceRegistry()
// todo(slukjanov): support all other resources
// k8s/Service handling is temporarily disabled
reg.AddHandler("_k8s/Service", serviceResourceHeaders, serviceResourceHandler)
reg.AddHandler("k8s/Deployment", deploymentResourceHeaders, deploymentResourceHandler)
reg.AddHandler("k8s/StatefulSet", statefulSetResourceHeaders, statefulSetResourceHandler)
return reg
}
// k8s/Service
var serviceResourceHeaders = []string{
"Namespace",
"Name",
"Type",
"Port(s)",
"Created",
}
func serviceResourceHandler(obj interface{}) []string {
service, ok := obj.(*v1.Service)
if !ok {
panic(fmt.Sprintf("object is not a valid kubernetes v1.Service: %+v", obj))
}
parts := make([]string, len(service.Spec.Ports))
for idx, port := range service.Spec.Ports {
if port.NodePort > 0 {
parts[idx] = fmt.Sprintf("%d:%d/%s", port.Port, port.NodePort, port.Protocol)
} else {
parts[idx] = fmt.Sprintf("%d/%s", port.Port, port.Protocol)
}
if len(port.Name) > 0 {
parts[idx] += "(" + port.Name + ")"
}
}
ports := strings.Join(parts, ",")
return []string{service.Namespace, service.Name, string(service.Spec.Type), ports, service.CreationTimestamp.String()}
}
// k8s/Deployment
var deploymentResourceHeaders = []string{
"Namespace",
"Name",
"Ready",
"Desired",
"Current",
"Up-to-date",
"Available",
"Generation",
"Created",
}
func deploymentResourceHandler(obj interface{}) []string {
deployment, ok := obj.(*v1beta1.Deployment)
if !ok {
panic(fmt.Sprintf("object is not a valid kubernetes v1beta1.Deployment: %+v", obj))
}
desiredReplicas := fmt.Sprintf("%d", *deployment.Spec.Replicas)
currentReplicas := fmt.Sprintf("%d", deployment.Status.Replicas)
updatedReplicas := fmt.Sprintf("%d", deployment.Status.UpdatedReplicas)
availableReplicas := fmt.Sprintf("%d", deployment.Status.AvailableReplicas)
ready := strconv.FormatBool(desiredReplicas == currentReplicas && currentReplicas == updatedReplicas && updatedReplicas == availableReplicas)
gen := fmt.Sprintf("%d", deployment.Generation)
created := deployment.CreationTimestamp.String()
return []string{deployment.Namespace, deployment.Name, ready, desiredReplicas, currentReplicas, updatedReplicas, availableReplicas, gen, created}
}
// k8s/StatefulSet
var statefulSetResourceHeaders = []string{
"Namespace",
"Name",
"Ready",
"Desired",
"Current",
}
func statefulSetResourceHandler(obj interface{}) []string {
statefulSet, ok := obj.(*v1beta1.StatefulSet)
if !ok {
panic(fmt.Sprintf("object is not a valid kubernetes v1beta1.StatefulSet: %+v", obj))
}
desiredReplicas := fmt.Sprintf("%d", *statefulSet.Spec.Replicas)
currentReplicas := fmt.Sprintf("%d", statefulSet.Status.Replicas)
ready := strconv.FormatBool(desiredReplicas == currentReplicas)
return []string{statefulSet.Namespace, statefulSet.Name, ready, desiredReplicas, currentReplicas}
}