forked from argoproj/argo-workflows
/
health.go
137 lines (126 loc) · 4.37 KB
/
health.go
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package controller
import (
"context"
"encoding/json"
"fmt"
appv1 "github.com/argoproj/argo-cd/pkg/apis/application/v1alpha1"
"github.com/argoproj/argo-cd/util/db"
"github.com/argoproj/argo-cd/util/kube"
"k8s.io/api/apps/v1"
coreV1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
)
const (
maxHistoryCnt = 5
)
type AppHealthManager interface {
GetAppHealth(server string, namespace string, comparisonResult *appv1.ComparisonResult) (*appv1.HealthStatus, error)
}
type kubeAppHealthManager struct {
db db.ArgoDB
namespace string
}
func NewAppHealthManager(db db.ArgoDB, namespace string) AppHealthManager {
return &kubeAppHealthManager{db: db, namespace: namespace}
}
func (ctrl *kubeAppHealthManager) getServiceHealth(config *rest.Config, namespace string, name string) (*appv1.HealthStatus, error) {
clientSet, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, err
}
service, err := clientSet.CoreV1().Services(namespace).Get(name, metav1.GetOptions{})
if err != nil {
return nil, err
}
health := appv1.HealthStatus{Status: appv1.HealthStatusHealthy}
if service.Spec.Type == coreV1.ServiceTypeLoadBalancer {
health.Status = appv1.HealthStatusProgressing
for _, ingress := range service.Status.LoadBalancer.Ingress {
if ingress.Hostname != "" || ingress.IP != "" {
health.Status = appv1.HealthStatusHealthy
break
}
}
}
return &health, nil
}
func (ctrl *kubeAppHealthManager) getDeploymentHealth(config *rest.Config, namespace string, name string) (*appv1.HealthStatus, error) {
clientSet, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, err
}
deploy, err := clientSet.AppsV1().Deployments(namespace).Get(name, metav1.GetOptions{})
if err != nil {
return nil, err
}
health := appv1.HealthStatus{
Status: appv1.HealthStatusUnknown,
}
for _, condition := range deploy.Status.Conditions {
// deployment is healthy is it successfully progressed
if condition.Type == v1.DeploymentProgressing && condition.Status == "True" {
health.Status = appv1.HealthStatusHealthy
} else if condition.Type == v1.DeploymentReplicaFailure && condition.Status == "True" {
health.Status = appv1.HealthStatusDegraded
} else if condition.Type == v1.DeploymentProgressing && condition.Status == "False" {
health.Status = appv1.HealthStatusDegraded
} else if condition.Type == v1.DeploymentAvailable && condition.Status == "False" {
health.Status = appv1.HealthStatusDegraded
}
if health.Status != appv1.HealthStatusUnknown {
health.StatusDetails = fmt.Sprintf("%s:%s", condition.Reason, condition.Message)
break
}
}
return &health, nil
}
func (ctrl *kubeAppHealthManager) GetAppHealth(server string, namespace string, comparisonResult *appv1.ComparisonResult) (*appv1.HealthStatus, error) {
clst, err := ctrl.db.GetCluster(context.Background(), server)
if err != nil {
return nil, err
}
restConfig := clst.RESTConfig()
appHealth := appv1.HealthStatus{Status: appv1.HealthStatusHealthy}
for i := range comparisonResult.Resources {
resource := comparisonResult.Resources[i]
if resource.LiveState == "null" {
resource.Health = appv1.HealthStatus{Status: appv1.HealthStatusUnknown}
} else {
var obj unstructured.Unstructured
err := json.Unmarshal([]byte(resource.LiveState), &obj)
if err != nil {
return nil, err
}
switch obj.GetKind() {
case kube.DeploymentKind:
state, err := ctrl.getDeploymentHealth(restConfig, namespace, obj.GetName())
if err != nil {
return nil, err
}
resource.Health = *state
case kube.ServiceKind:
state, err := ctrl.getServiceHealth(restConfig, namespace, obj.GetName())
if err != nil {
return nil, err
}
resource.Health = *state
default:
resource.Health = appv1.HealthStatus{Status: appv1.HealthStatusHealthy}
}
if resource.Health.Status == appv1.HealthStatusProgressing {
if appHealth.Status == appv1.HealthStatusHealthy {
appHealth.Status = appv1.HealthStatusProgressing
}
} else if resource.Health.Status == appv1.HealthStatusDegraded {
if appHealth.Status == appv1.HealthStatusHealthy || appHealth.Status == appv1.HealthStatusProgressing {
appHealth.Status = appv1.HealthStatusDegraded
}
}
}
comparisonResult.Resources[i] = resource
}
return &appHealth, nil
}