Shared informers (#2092)

* Use shared informers across executor for fission CRs Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Add informer for configmap and secrets Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Use shared informers in router Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Add shared informer for canary config Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Add sharedinformer for ready pod check Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Refer informer instead of store in resolver Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Run informers before executors Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Add missing canary config handler calls Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Enable websocket test Signed-off-by: Sanket Sudake <sanketsudake@gmail.com> * Run dump collection always Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>
2021-07-05 20:28:26 +05:30
parent 43814450e5
commit f86fde81e6
22 changed files with 793 additions and 718 deletions
@@ -0,0 +1,73 @@
+/*
+Copyright 2021 The Fission Authors.
+
+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 cms
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+	apiv1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/kubernetes"
+	k8sCache "k8s.io/client-go/tools/cache"
+
+	fv1 "github.com/fission/fission/pkg/apis/core/v1"
+	"github.com/fission/fission/pkg/crd"
+	"github.com/fission/fission/pkg/executor/executortype"
+)
+
+func getConfigmapRelatedFuncs(logger *zap.Logger, m *metav1.ObjectMeta, fissionClient *crd.FissionClient) ([]fv1.Function, error) {
+	funcList, err := fissionClient.CoreV1().Functions(metav1.NamespaceAll).List(context.TODO(), metav1.ListOptions{})
+	if err != nil {
+		return nil, err
+	}
+	// In future a cache that populates at start and is updated on changes might be better solution
+	relatedFunctions := make([]fv1.Function, 0)
+	for _, f := range funcList.Items {
+		for _, cm := range f.Spec.ConfigMaps {
+			if (cm.Name == m.Name) && (cm.Namespace == m.Namespace) {
+				relatedFunctions = append(relatedFunctions, f)
+				break
+			}
+		}
+	}
+	return relatedFunctions, nil
+}
+
+func ConfigMapEventHandlers(logger *zap.Logger, fissionClient *crd.FissionClient,
+	kubernetesClient *kubernetes.Clientset, types map[fv1.ExecutorType]executortype.ExecutorType) k8sCache.ResourceEventHandlerFuncs {
+
+	return k8sCache.ResourceEventHandlerFuncs{
+		AddFunc:    func(obj interface{}) {},
+		DeleteFunc: func(obj interface{}) {},
+		UpdateFunc: func(oldObj interface{}, newObj interface{}) {
+			oldCm := oldObj.(*apiv1.ConfigMap)
+			newCm := newObj.(*apiv1.ConfigMap)
+			if oldCm.ObjectMeta.ResourceVersion != newCm.ObjectMeta.ResourceVersion {
+				if newCm.ObjectMeta.Namespace != "kube-system" {
+					logger.Debug("Configmap changed",
+						zap.String("configmap_name", newCm.ObjectMeta.Name),
+						zap.String("configmap_namespace", newCm.ObjectMeta.Namespace))
+				}
+				funcs, err := getConfigmapRelatedFuncs(logger, &newCm.ObjectMeta, fissionClient)
+				if err != nil {
+					logger.Error("Failed to get functions related to configmap", zap.String("configmap_name", newCm.ObjectMeta.Name), zap.String("configmap_namespace", newCm.ObjectMeta.Namespace))
+				}
+				refreshPods(logger, funcs, types)
+			}
+		},
+	}
+}