/
plugin_controller.go
111 lines (91 loc) · 3.66 KB
/
plugin_controller.go
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/*
* Copyright © 2019 Banzai Cloud
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package plugin
import (
"context"
"github.com/banzaicloud/logging-operator/pkg/resources"
"github.com/banzaicloud/logging-operator/pkg/resources/plugins"
loggingv1alpha1 "github.com/banzaicloud/logging-operator/pkg/apis/logging/v1alpha1"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
"sigs.k8s.io/controller-runtime/pkg/source"
)
var log = logf.Log.WithName("controller_plugin")
/**
* USER ACTION REQUIRED: This is a scaffold file intended for the user to modify with their own Controller
* business logic. Delete these comments after modifying this file.*
*/
// Add creates a new Plugin Controller and adds it to the Manager. The Manager will set fields on the Controller
// and Start it when the Manager is Started.
func Add(mgr manager.Manager) error {
return add(mgr, newReconciler(mgr))
}
// newReconciler returns a new reconcile.Reconciler
func newReconciler(mgr manager.Manager) reconcile.Reconciler {
return &ReconcilePlugin{client: mgr.GetClient(), scheme: mgr.GetScheme()}
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(mgr manager.Manager, r reconcile.Reconciler) error {
// Create a new controller
c, err := controller.New("plugin-controller", mgr, controller.Options{Reconciler: r})
if err != nil {
return err
}
// Watch for changes to primary resource Plugin
err = c.Watch(&source.Kind{Type: &loggingv1alpha1.Plugin{}}, &handler.EnqueueRequestForObject{})
if err != nil {
return err
}
return nil
}
var _ reconcile.Reconciler = &ReconcilePlugin{}
// ReconcilePlugin reconciles a Plugin object
type ReconcilePlugin struct {
// This client, initialized using mgr.Client() above, is a split client
// that reads objects from the cache and writes to the apiserver
client client.Client
scheme *runtime.Scheme
}
// Reconcile reads that state of the cluster for a Plugin object and makes changes based on the state read
// and what is in the Plugin.Spec
// Note:
// The Controller will requeue the Request to be processed again if the returned error is non-nil or
// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
func (r *ReconcilePlugin) Reconcile(request reconcile.Request) (reconcile.Result, error) {
reqLogger := log.WithValues("Request.Namespace", request.Namespace, "Request.Name", request.Name)
reqLogger.Info("Reconciling Plugin")
// Fetch the Plugin instance
instanceList := &loggingv1alpha1.PluginList{}
err := r.client.List(context.TODO(), client.MatchingLabels(map[string]string{}), instanceList)
if err != nil {
return reconcile.Result{}, err
}
reconcilers := []resources.ComponentReconciler{
plugins.New(r.client, instanceList, request.Namespace),
}
for _, rec := range reconcilers {
err = rec.Reconcile(reqLogger)
if err != nil {
return reconcile.Result{}, err
}
}
return reconcile.Result{}, nil
}