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projectHandler.go
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projectHandler.go
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package monitoring
import (
"context"
"fmt"
"reflect"
"time"
"github.com/pkg/errors"
"github.com/rancher/rancher/pkg/monitoring"
"github.com/rancher/rancher/pkg/settings"
mgmtv3 "github.com/rancher/types/apis/management.cattle.io/v3"
projectv3 "github.com/rancher/types/apis/project.cattle.io/v3"
k8scorev1 "k8s.io/api/core/v1"
k8srbacv1 "k8s.io/api/rbac/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
)
type projectHandler struct {
ctx context.Context
clusterName string
cattleClustersClient mgmtv3.ClusterInterface
cattleProjectsClient mgmtv3.ProjectInterface
projectGraph mgmtv3.ProjectMonitorGraphInterface
app *appHandler
}
func (ph *projectHandler) sync(key string, project *mgmtv3.Project) (runtime.Object, error) {
if project == nil || project.DeletionTimestamp != nil ||
project.Spec.ClusterName != ph.clusterName {
return project, nil
}
_, err := ph.cattleClustersClient.Get(project.Spec.ClusterName, metav1.GetOptions{})
if err != nil {
return project, errors.Wrapf(err, "failed to find Cluster %s", project.Spec.ClusterName)
}
projectTag := getProjectTag(project)
src := project
cpy := src.DeepCopy()
err = ph.syncProjectMonitoring(cpy, ph.projectGraph)
if !reflect.DeepEqual(cpy, src) {
updated, updateErr := ph.cattleProjectsClient.Update(cpy)
if updateErr != nil {
return project, errors.Wrapf(updateErr, "failed to update Project %s in Cluster %s", projectTag, project.Spec.ClusterName)
}
cpy = updated
}
if err != nil {
err = errors.Wrapf(err, "unable to sync Project %s in Cluster %s", projectTag, project.Spec.ClusterName)
}
return cpy, err
}
func (ph *projectHandler) syncProjectMonitoring(project *mgmtv3.Project, projectGraphClient mgmtv3.ProjectMonitorGraphInterface) error {
if !mgmtv3.NamespaceBackedResource.IsTrue(project) && !mgmtv3.ProjectConditionInitialRolesPopulated.IsTrue(project) {
return nil
}
_, err := mgmtv3.ProjectConditionMetricExpressionDeployed.DoUntilTrue(project, func() (runtime.Object, error) {
projectName := fmt.Sprintf("%s:%s", project.Spec.ClusterName, project.Name)
for _, graph := range preDefinedProjectGraph {
newObj := graph.DeepCopy()
newObj.Namespace = project.Name
newObj.Spec.ProjectName = projectName
if _, err := projectGraphClient.Create(newObj); err != nil && !apierrors.IsAlreadyExists(err) {
return project, err
}
}
return project, nil
})
if err != nil {
return errors.Wrap(err, "failed to apply metric expression")
}
appName, appTargetNamespace := monitoring.ProjectMonitoringInfo(project.Name)
if project.Spec.EnableProjectMonitoring {
appProjectName, err := ph.app.ensureProjectMonitoringProjectName(appTargetNamespace, project)
if err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to ensure monitoring project name")
}
deployServiceAccountName, err := ph.app.grantProjectMonitoringPermissions(appName, appTargetNamespace, project)
if err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to grant monitoring permissions")
}
if err := ph.app.deployProjectMonitoringApp(appName, appTargetNamespace, deployServiceAccountName, appProjectName, project); err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to deploy monitoring")
}
if err := ph.detectMonitoringComponentsWhileInstall(appName, appTargetNamespace, project); err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to detect the installation status of monitoring components")
}
mgmtv3.ProjectConditionMonitoringEnabled.True(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, "")
} else if project.Status.MonitoringStatus != nil {
if err := ph.app.withdrawApp(appName, appTargetNamespace); err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to withdraw monitoring")
}
if err := ph.detectMonitoringComponentsWhileUninstall(appName, appTargetNamespace, project); err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to detect the uninstallation status of monitoring components")
}
appServiceAccountName := appName
appClusterRoleName := fmt.Sprintf("%s-%s", appName, project.Name)
appClusterRoleBindingName := appClusterRoleName + "-binding"
if err := ph.app.revokePermissions(appServiceAccountName, appClusterRoleName, appClusterRoleBindingName, appTargetNamespace); err != nil {
mgmtv3.ProjectConditionMonitoringEnabled.Unknown(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, err.Error())
return errors.Wrap(err, "failed to revoke monitoring permissions")
}
mgmtv3.ProjectConditionMonitoringEnabled.False(project)
mgmtv3.ProjectConditionMonitoringEnabled.Message(project, "")
}
return nil
}
func (ph *projectHandler) detectMonitoringComponentsWhileInstall(appName, appTargetNamespace string, project *mgmtv3.Project) error {
time.Sleep(5 * time.Second)
if project.Status.MonitoringStatus == nil {
project.Status.MonitoringStatus = &mgmtv3.MonitoringStatus{
Conditions: []mgmtv3.MonitoringCondition{
{Type: mgmtv3.ClusterConditionType(ConditionGrafanaDeployed), Status: k8scorev1.ConditionFalse},
},
}
}
return isGrafanaDeployed(ph.app.agentWorkloadsClient, appTargetNamespace, appName, project.Status.MonitoringStatus, project.Spec.ClusterName)
}
func (ph *projectHandler) detectMonitoringComponentsWhileUninstall(appName, appTargetNamespace string, project *mgmtv3.Project) error {
if project.Status.MonitoringStatus == nil {
return nil
}
time.Sleep(5 * time.Second)
return isGrafanaWithdrew(ph.app.agentWorkloadsClient, appTargetNamespace, appName, project.Status.MonitoringStatus)
}
func (ah *appHandler) ensureProjectMonitoringProjectName(appTargetNamespace string, project *mgmtv3.Project) (string, error) {
agentNamespacesClient := ah.agentCoreClient.Namespaces(metav1.NamespaceAll)
appProjectName, err := monitoring.EnsureAppProjectName(agentNamespacesClient, project.Name, project.Spec.ClusterName, appTargetNamespace)
if err != nil {
return "", err
}
return appProjectName, nil
}
func (ah *appHandler) grantProjectMonitoringPermissions(appName, appTargetNamespace string, project *mgmtv3.Project) (string, error) {
appServiceAccountName := appName
appClusterRoleName := fmt.Sprintf("%s-%s", appName, project.Name)
appClusterRoleBindingName := appClusterRoleName + "-binding"
err := stream(
// detect ServiceAccount (the name as same as App)
func() error {
appServiceAccount, err := ah.agentCoreClient.ServiceAccounts(appTargetNamespace).Get(appServiceAccountName, metav1.GetOptions{})
if err != nil && !k8serrors.IsNotFound(err) {
return errors.Wrapf(err, "failed to query %q ServiceAccount in %q Namespace", appServiceAccountName, appTargetNamespace)
}
if appServiceAccount.Name == appServiceAccountName {
if appServiceAccount.DeletionTimestamp != nil {
return fmt.Errorf("stale %q ServiceAccount in %q Namespace is still on terminating", appServiceAccountName, appTargetNamespace)
}
} else {
appServiceAccount = &k8scorev1.ServiceAccount{
ObjectMeta: metav1.ObjectMeta{
Name: appServiceAccountName,
Namespace: appTargetNamespace,
Labels: monitoring.OwnedLabels(appName, appTargetNamespace, monitoring.ProjectLevel),
},
}
if _, err := ah.agentCoreClient.ServiceAccounts(appTargetNamespace).Create(appServiceAccount); err != nil && !k8serrors.IsAlreadyExists(err) {
return errors.Wrapf(err, "failed to create %q ServiceAccount in %q Namespace", appServiceAccountName, appTargetNamespace)
}
}
return nil
},
// detect ClusterRoleBinding (the name is ${ServiceAccountName}-binding)
func() error {
appClusterRoleBinding, err := ah.agentRBACClient.ClusterRoleBindings(metav1.NamespaceAll).Get(appClusterRoleBindingName, metav1.GetOptions{})
if err != nil && !k8serrors.IsNotFound(err) {
return errors.Wrapf(err, "failed to query %q ClusterRoleBinding", appClusterRoleBindingName)
}
if appClusterRoleBinding.Name == appClusterRoleBindingName {
if appClusterRoleBinding.DeletionTimestamp != nil {
return fmt.Errorf("stale %q ClusterRoleBinding is still on terminating", appClusterRoleBindingName)
}
} else {
appClusterRoleBinding = &k8srbacv1.ClusterRoleBinding{
ObjectMeta: metav1.ObjectMeta{
Name: appClusterRoleBindingName,
Labels: monitoring.OwnedLabels(appName, appTargetNamespace, monitoring.ProjectLevel),
},
Subjects: []k8srbacv1.Subject{
{
Kind: k8srbacv1.ServiceAccountKind,
Namespace: appTargetNamespace,
Name: appServiceAccountName,
},
},
RoleRef: k8srbacv1.RoleRef{
APIGroup: k8srbacv1.GroupName,
Kind: "ClusterRole",
Name: project.Name + "-namespaces-edit",
},
}
if _, err := ah.agentRBACClient.ClusterRoleBindings(metav1.NamespaceAll).Create(appClusterRoleBinding); err != nil && !k8serrors.IsAlreadyExists(err) {
return errors.Wrapf(err, "failed to create %q ClusterRoleBinding", appClusterRoleBindingName)
}
}
return nil
},
)
if err != nil {
return "", err
}
return appServiceAccountName, nil
}
func (ah *appHandler) deployProjectMonitoringApp(appName, appTargetNamespace string, appServiceAccountName, appProjectName string, project *mgmtv3.Project) error {
clusterPrometheusSvcName, clusterPrometheusSvcNamespace, clusterPrometheusPort := monitoring.ClusterPrometheusEndpoint()
appAnswers := map[string]string{
"grafana.enabled": "true",
"grafana.apiGroup": monitoring.APIVersion.Group,
"grafana.serviceAccountName": appServiceAccountName,
"grafana.persistence.enabled": "false",
"grafana.level": "project",
"grafana.prometheusDatasourceURL": fmt.Sprintf("http://%s.%s:%s", clusterPrometheusSvcName, clusterPrometheusSvcNamespace, clusterPrometheusPort),
}
appAnswers = monitoring.OverwriteAppAnswers(appAnswers, project.Annotations)
appCatalogID := settings.SystemMonitoringCatalogID.Get()
appDeployProjectID := project.Name
app := &projectv3.App{
ObjectMeta: metav1.ObjectMeta{
Annotations: monitoring.CopyCreatorID(nil, project.Annotations),
Labels: monitoring.OwnedLabels(appName, appTargetNamespace, monitoring.ProjectLevel),
Name: appName,
Namespace: appDeployProjectID,
},
Spec: projectv3.AppSpec{
Answers: appAnswers,
Description: "Rancher Project Monitoring",
ExternalID: appCatalogID,
ProjectName: appProjectName,
TargetNamespace: appTargetNamespace,
},
}
err := monitoring.DeployApp(ah.cattleAppsGetter, appDeployProjectID, app)
if err != nil {
return err
}
return nil
}
func getProjectTag(project *mgmtv3.Project) string {
return fmt.Sprintf("%s(%s)", project.Spec.DisplayName, project.Name)
}