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status.go
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status.go
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// ------------------------------------------------------------
// Copyright (c) Microsoft Corporation and Dapr Contributors.
// Licensed under the MIT License.
// ------------------------------------------------------------
package kubernetes
import (
"fmt"
"os"
"strings"
"sync"
"errors"
"github.com/dapr/cli/pkg/age"
"github.com/dapr/cli/pkg/print"
k8s "k8s.io/client-go/kubernetes"
)
var controlPlaneLabels = []string{
"dapr-operator",
"dapr-sentry",
"dapr-placement", // TODO: This is for the backward compatibility. Remove this after 1.0.0 GA release.
"dapr-placement-server",
"dapr-sidecar-injector",
"dapr-dashboard",
}
type StatusClient struct {
client k8s.Interface
}
// StatusOutput represents the status of a named Dapr resource.
type StatusOutput struct {
Name string `csv:"NAME"`
Namespace string `csv:"NAMESPACE"`
Healthy string `csv:"HEALTHY"`
Status string `csv:"STATUS"`
Replicas int `csv:"REPLICAS"`
Version string `csv:"VERSION"`
Age string `csv:"AGE"`
Created string `csv:"CREATED"`
}
// Create a new k8s client for status commands.
func NewStatusClient() (*StatusClient, error) {
clientset, err := Client()
if err != nil {
return nil, err
}
return &StatusClient{
client: clientset,
}, nil
}
// List status for Dapr resources.
func (s *StatusClient) Status() ([]StatusOutput, error) {
client := s.client
if client == nil {
return nil, errors.New("kubernetes client not initialized")
}
var wg sync.WaitGroup
wg.Add(len(controlPlaneLabels))
m := sync.Mutex{}
statuses := []StatusOutput{}
for _, lbl := range controlPlaneLabels {
go func(label string) {
defer wg.Done()
// Query all namespaces for Dapr pods.
p, err := ListPodsInterface(client, map[string]string{
"app": label,
})
if err != nil {
print.WarningStatusEvent(os.Stdout, "Failed to get status for %s: %s", label, err.Error())
return
}
if len(p.Items) == 0 {
return
}
pod := p.Items[0]
replicas := len(p.Items)
image := pod.Spec.Containers[0].Image
namespace := pod.GetNamespace()
age := age.GetAge(pod.CreationTimestamp.Time)
created := pod.CreationTimestamp.Format("2006-01-02 15:04.05")
version := image[strings.IndexAny(image, ":")+1:]
status := ""
// loop through all replicas and update to Running/Healthy status only if all instances are Running and Healthy
healthy := "False"
running := true
for _, p := range p.Items {
if len(p.Status.ContainerStatuses) == 0 {
status = string(p.Status.Phase)
} else if p.Status.ContainerStatuses[0].State.Waiting != nil {
status = fmt.Sprintf("Waiting (%s)", p.Status.ContainerStatuses[0].State.Waiting.Reason)
} else if pod.Status.ContainerStatuses[0].State.Terminated != nil {
status = "Terminated"
}
if len(p.Status.ContainerStatuses) == 0 ||
p.Status.ContainerStatuses[0].State.Running == nil {
running = false
break
}
if p.Status.ContainerStatuses[0].Ready {
healthy = "True"
}
}
if running {
status = "Running"
}
s := StatusOutput{
Name: label,
Namespace: namespace,
Created: created,
Age: age,
Status: status,
Version: version,
Healthy: healthy,
Replicas: replicas,
}
m.Lock()
statuses = append(statuses, s)
m.Unlock()
}(lbl)
}
wg.Wait()
return statuses, nil
}