/* Copyright 2016 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 newdeploy import ( "encoding/json" "errors" "log" "path/filepath" "strconv" "time" k8s_err "k8s.io/apimachinery/pkg/api/errors" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/util/intstr" apiv1 "k8s.io/client-go/pkg/api/v1" asv1 "k8s.io/client-go/pkg/apis/autoscaling/v1" "k8s.io/client-go/pkg/apis/extensions/v1beta1" "github.com/fission/fission" "github.com/fission/fission/crd" "github.com/fission/fission/environments/fetcher" ) const ( DeploymentKind = "Deployment" DeploymentVersion = "extensions/v1beta1" ) const ( envVersion = "ENV_VERSION" ) func (deploy *NewDeploy) createOrGetDeployment(fn *crd.Function, env *crd.Environment, deployName string, deployLabels map[string]string) (*v1beta1.Deployment, error) { replicas := int32(fn.Spec.InvokeStrategy.ExecutionStrategy.MinScale) if replicas == 0 { replicas = 1 } targetFilename := "user" userfunc := "userfunc" existingDepl, err := deploy.kubernetesClient.ExtensionsV1beta1().Deployments(deploy.namespace).Get(deployName, metav1.GetOptions{}) if err == nil && existingDepl.Status.ReadyReplicas >= replicas { return existingDepl, err } if err != nil && k8s_err.IsNotFound(err) { fetchReq := &fetcher.FetchRequest{ FetchType: fetcher.FETCH_DEPLOYMENT, Package: metav1.ObjectMeta{ Namespace: fn.Spec.Package.PackageRef.Namespace, Name: fn.Spec.Package.PackageRef.Name, }, Filename: targetFilename, Secrets: fn.Spec.Secrets, ConfigMaps: fn.Spec.ConfigMaps, } loadReq := fission.FunctionLoadRequest{ FilePath: filepath.Join(deploy.sharedMountPath, targetFilename), FunctionName: fn.Spec.Package.FunctionName, FunctionMetadata: &fn.Metadata, } fetchPayload, err := json.Marshal(fetchReq) if err != nil { return nil, err } loadPayload, err := json.Marshal(loadReq) if err != nil { return nil, err } deployment := &v1beta1.Deployment{ ObjectMeta: metav1.ObjectMeta{ Labels: deployLabels, Name: deployName, }, Spec: v1beta1.DeploymentSpec{ Replicas: &replicas, Selector: &metav1.LabelSelector{ MatchLabels: deployLabels, }, Template: apiv1.PodTemplateSpec{ ObjectMeta: metav1.ObjectMeta{ Labels: deployLabels, }, Spec: apiv1.PodSpec{ Volumes: []apiv1.Volume{ { Name: userfunc, VolumeSource: apiv1.VolumeSource{ EmptyDir: &apiv1.EmptyDirVolumeSource{}, }, }, }, Containers: []apiv1.Container{ { Name: fn.Metadata.Name, Image: env.Spec.Runtime.Image, ImagePullPolicy: apiv1.PullIfNotPresent, TerminationMessagePath: "/dev/termination-log", VolumeMounts: []apiv1.VolumeMount{ { Name: userfunc, MountPath: deploy.sharedMountPath, }, }, Resources: env.Spec.Resources, }, { Name: "fetcher", Image: deploy.fetcherImg, ImagePullPolicy: deploy.fetcherImagePullPolicy, TerminationMessagePath: "/dev/termination-log", VolumeMounts: []apiv1.VolumeMount{ { Name: userfunc, MountPath: deploy.sharedMountPath, }, }, Command: []string{"/fetcher", "-specialize-on-startup", "-fetch-request", string(fetchPayload), "-load-request", string(loadPayload), "-secret-dir", deploy.sharedSecretPath, "-cfgmap-dir", deploy.sharedCfgMapPath, deploy.sharedMountPath}, Env: []apiv1.EnvVar{ { Name: envVersion, Value: strconv.Itoa(env.Spec.Version), }, }, // TBD Use smaller default resources, for now needed to make HPA work Resources: env.Spec.Resources, ReadinessProbe: &apiv1.Probe{ Handler: apiv1.Handler{ Exec: &apiv1.ExecAction{ Command: []string{"cat", "/tmp/ready"}, }, }, InitialDelaySeconds: 1, PeriodSeconds: 1, }, }, }, ServiceAccountName: "fission-fetcher", }, }, }, } depl, err := deploy.kubernetesClient.ExtensionsV1beta1().Deployments(deploy.namespace).Create(deployment) if err != nil { log.Printf("Error while creating deployment: %v", err) return nil, err } for i := 0; i < 120; i++ { latestDepl, err := deploy.kubernetesClient.ExtensionsV1beta1().Deployments(deploy.namespace).Get(depl.Name, metav1.GetOptions{}) if err != nil { return nil, err } //TODO check for imagePullerror if latestDepl.Status.ReadyReplicas == replicas { return latestDepl, err } time.Sleep(time.Second) } return nil, errors.New("Failed to create deployment within timeout window") } return nil, err } func (deploy *NewDeploy) deleteDeployment(ns string, name string) error { deletePropagation := metav1.DeletePropagationForeground err := deploy.kubernetesClient.ExtensionsV1beta1().Deployments(ns).Delete(name, &metav1.DeleteOptions{ PropagationPolicy: &deletePropagation, }) if err != nil { return err } return nil } func (deploy *NewDeploy) createOrGetHpa(hpaName string, execStrategy *fission.ExecutionStrategy, depl *v1beta1.Deployment) (*asv1.HorizontalPodAutoscaler, error) { minRepl := int32(execStrategy.MinScale) if minRepl == 0 { minRepl = 1 } maxRepl := int32(execStrategy.MaxScale) targetCPU := int32(execStrategy.TargetCPUPercent) existingHpa, err := deploy.kubernetesClient.AutoscalingV1().HorizontalPodAutoscalers(deploy.namespace).Get(hpaName, metav1.GetOptions{}) if err == nil { return existingHpa, err } if err != nil && k8s_err.IsNotFound(err) { hpa := asv1.HorizontalPodAutoscaler{ ObjectMeta: metav1.ObjectMeta{ Name: hpaName, Namespace: deploy.namespace, Labels: depl.Labels, }, Spec: asv1.HorizontalPodAutoscalerSpec{ ScaleTargetRef: asv1.CrossVersionObjectReference{ Kind: DeploymentKind, Name: depl.ObjectMeta.Name, APIVersion: DeploymentVersion, }, MinReplicas: &minRepl, MaxReplicas: maxRepl, TargetCPUUtilizationPercentage: &targetCPU, }, } cHpa, err := deploy.kubernetesClient.AutoscalingV1().HorizontalPodAutoscalers(deploy.namespace).Create(&hpa) if err != nil { return nil, err } return cHpa, nil } return nil, err } func (deploy NewDeploy) deleteHpa(ns string, name string) error { err := deploy.kubernetesClient.AutoscalingV1().HorizontalPodAutoscalers(ns).Delete(name, &metav1.DeleteOptions{}) return err } func (deploy *NewDeploy) createOrGetSvc(deployLabels map[string]string, svcName string) (*apiv1.Service, error) { existingSvc, err := deploy.kubernetesClient.CoreV1().Services(deploy.namespace).Get(svcName, metav1.GetOptions{}) if err == nil { return existingSvc, err } if err != nil && k8s_err.IsNotFound(err) { service := &apiv1.Service{ ObjectMeta: metav1.ObjectMeta{ Name: svcName, Labels: deployLabels, }, Spec: apiv1.ServiceSpec{ Ports: []apiv1.ServicePort{ { Name: "runtime-env-port", Port: int32(80), TargetPort: intstr.FromInt(8888), }, { Name: "fetcher-port", Port: int32(8000), TargetPort: intstr.FromInt(8000), }, }, Selector: deployLabels, Type: apiv1.ServiceTypeClusterIP, }, } svc, err := deploy.kubernetesClient.CoreV1().Services(deploy.namespace).Create(service) if err != nil { return nil, err } return svc, nil } return nil, err } func (deploy *NewDeploy) deleteSvc(ns string, name string) error { err := deploy.kubernetesClient.CoreV1().Services(ns).Delete(name, &metav1.DeleteOptions{}) if err != nil { return err } return nil }