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core_monitoring_controller.go
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/
core_monitoring_controller.go
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//go:build !minimal
package controllers
import (
"context"
"github.com/go-logr/logr"
corev1beta1 "github.com/rancher/opni/apis/core/v1beta1"
"github.com/rancher/opni/pkg/resources/monitoring"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/predicate"
)
// +kubebuilder:rbac:groups=core.opni.io,resources=monitoringclusters,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=core.opni.io,resources=monitoringclusters/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=core.opni.io,resources=monitoringclusters/finalizers,verbs=update
// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps,resources=statefulsets,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=core,resources=configmaps,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=core,resources=secrets,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=monitoring.coreos.com,resources=servicemonitors,verbs=get;list;watch;create;update;patch;delete
type CoreMonitoringReconciler struct {
client.Client
scheme *runtime.Scheme
logger logr.Logger
}
func (r *CoreMonitoringReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
lg := r.logger
mc := &corev1beta1.MonitoringCluster{}
err := r.Get(ctx, req.NamespacedName, mc)
if err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
rec := monitoring.NewReconciler(ctx, r.Client, mc)
result, err := rec.Reconcile()
if err != nil {
lg.WithValues(
"gateway", mc.Name,
"namespace", mc.Namespace,
).Error(err, "failed to reconcile monitoring cluster")
return ctrl.Result{}, err
}
return result, nil
}
// SetupWithManager sets up the controller with the Manager.
func (r *CoreMonitoringReconciler) SetupWithManager(mgr ctrl.Manager) error {
r.logger = mgr.GetLogger().WithName("monitoring")
r.Client = mgr.GetClient()
r.scheme = mgr.GetScheme()
return ctrl.NewControllerManagedBy(mgr).
For(&corev1beta1.MonitoringCluster{}).
Owns(&appsv1.Deployment{}).
Owns(&appsv1.StatefulSet{}).
Owns(&corev1.ConfigMap{}).
Owns(&corev1.Secret{}).
Owns(&corev1.Service{}).
Watches(
&corev1beta1.Gateway{},
handler.EnqueueRequestsFromMapFunc(r.findMonitoringClusters),
builder.WithPredicates(predicate.ResourceVersionChangedPredicate{}),
).
Complete(r)
}
func (r *CoreMonitoringReconciler) findMonitoringClusters(ctx context.Context, gw client.Object) []ctrl.Request {
// Look up all MonitoringClusters that reference this gateway
monitoringClusters := &corev1beta1.MonitoringClusterList{}
err := r.List(ctx, monitoringClusters, client.InNamespace(gw.GetNamespace()))
if err != nil {
return []ctrl.Request{}
}
var requests []ctrl.Request
for _, mc := range monitoringClusters.Items {
if mc.Spec.Gateway.Name == gw.GetName() {
requests = append(requests, ctrl.Request{
NamespacedName: types.NamespacedName{
Name: mc.Name,
Namespace: mc.Namespace,
},
})
}
}
return requests
}