Add initial Salad cloud virtual kubelet provider (#7)

README.md

@@ -3,3 +3,34 @@
 [![License](https://img.shields.io/github/license/SaladTechnologies/virtual-kubelet-saladcloud)](./LICENSE) [![CI Workflow](https://github.com/SaladTechnologies/virtual-kubelet-saladcloud/actions/workflows/ci.yml/badge.svg?branch=main&event=push)](https://github.com/SaladTechnologies/virtual-kubelet-saladcloud/actions/workflows/ci.yml) [![Go Report Card](https://goreportcard.com/badge/github.com/SaladTechnologies/virtual-kubelet-saladcloud)](https://goreportcard.com/report/github.com/SaladTechnologies/virtual-kubelet-saladcloud)
 
 Salad's Virtual Kubelet (VK) provider for SaladCloud enables running Kubernetes (K8s) pods as container group deployments.
+
+To Setup the project
+1. Clone the repo command
+```bash
+git clone
+```
+2. Install the dependencies
+```bash
+go mod download
+```
+3. Build the project
+```bash
+go build
+```
+4. Run the project
+```bash
+go run main.go --nodename {valid_node_name} --projectName {projectName} --organizationName {organizationName} --api-key {api-key} --kubeconfig {kubeconfig}
+```
+
+## Prerequisites
+You should have valid configuration required to run the project
+
+go to portal.salad.io and create a project and get the api-key and organization name
+set the kubeconfig to the valid kubeconfig file
+
+
+1. Valid ApiKey and OrganizationName
+2. Valid Kubeconfig
+3. Valid NodeName
+4. Valid ProjectName
+

cmd/virtual-kubelet/main.go

@@ -2,75 +2,184 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"math/rand"
+	"os"
+	"os/signal"
 	"path/filepath"
 
+	"github.com/SaladTechnologies/virtual-kubelet-saladcloud/internal/models"
 	"github.com/SaladTechnologies/virtual-kubelet-saladcloud/internal/provider"
 	"github.com/mitchellh/go-homedir"
-	log "github.com/sirupsen/logrus"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"github.com/virtual-kubelet/virtual-kubelet/errdefs"
+	"github.com/virtual-kubelet/virtual-kubelet/log"
+	logruslogger "github.com/virtual-kubelet/virtual-kubelet/log/logrus"
 	"github.com/virtual-kubelet/virtual-kubelet/node"
 	"github.com/virtual-kubelet/virtual-kubelet/node/nodeutil"
+	v1 "k8s.io/api/core/v1"
 )
 
+var (
+	binaryFilename     = filepath.Base(os.Args[0])
+	description        = fmt.Sprintf("%s implements a node on a Kubernetes cluster using Workload API to run pods.", binaryFilename)
+	inputs             = defaultInputs()
+	letters            = []rune("0123456789abcdefghijklmnopqrstuvwxyz")
+	taintEffectMapping = map[string]v1.TaintEffect{
+		"NoSchedule":       v1.TaintEffectNoSchedule,
+		"NoExecute":        v1.TaintEffectNoExecute,
+		"PreferNoSchedule": v1.TaintEffectPreferNoSchedule,
+	}
+)
+
+func defaultInputs() models.InputVars {
+	home, err := homedir.Dir()
+	kubeConfig := os.Getenv("KUBECONFIG")
+	if err == nil && home != "" {
+		kubeConfig = filepath.Join(home, ".kube", "config")
+	}
+
+	return models.InputVars{
+		NodeName:         "saladcloud-edge-provider",
+		KubeConfig:       kubeConfig,
+		LogLevel:         "info",
+		OrganizationName: "",
+		TaintKey:         "virtual-kubelet.io/provider",
+		TaintEffect:      "NoSchedule",
+		TaintValue:       "saladCloud",
+		ProjectName:      "",
+		ApiKey:           "",
+	}
+}
+
 func main() {
-	log.Info("SaladCloud Virtual Kubelet Provider")
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
+	defer cancel()
 
-	name := fmt.Sprintf("saladcloud-%s", randSeq(8))
-	node, err := nodeutil.NewNode(name, func(pc nodeutil.ProviderConfig) (nodeutil.Provider, node.NodeProvider, error) {
-		p, err := provider.NewSaladCloudProvider(context.Background())
-		if err != nil {
-			return nil, nil, err
-		}
+	if err := virtualKubeletCommand.ExecuteContext(ctx); err != nil && !errors.Is(err, context.Canceled) {
+		logrus.WithError(err).Error("Failed to execute virtual kubelet command")
+		os.Exit(1)
+	}
+}
+
+func initCommandFlags() {
+	virtualKubeletCommand.Flags().StringVar(&inputs.NodeName, "nodename", inputs.NodeName, "Kubernetes node name")
+	virtualKubeletCommand.Flags().StringVar(&inputs.KubeConfig, "kube-config", inputs.KubeConfig, "Kubeconfig file")
+	virtualKubeletCommand.Flags().StringVar(&inputs.OrganizationName, "organizationName", inputs.OrganizationName, "Organization name for Salad Client")
+	virtualKubeletCommand.Flags().BoolVar(&inputs.DisableTaint, "Disable taint flag", inputs.DisableTaint, "Disable the tainted effect")
+	virtualKubeletCommand.Flags().StringVar(&inputs.ApiKey, "api-key", inputs.ApiKey, "API key for the Salad Client")
+	virtualKubeletCommand.Flags().StringVar(&inputs.ProjectName, "projectName", inputs.ProjectName, "Project name for Salad Client")
+
+	markFlagRequired("organizationName")
+	markFlagRequired("projectName")
+}
+
+func markFlagRequired(flagName string) {
+	if err := virtualKubeletCommand.MarkFlagRequired(flagName); err != nil {
+		logrus.WithError(err).Errorf("Failed to mark %s as required", flagName)
+		os.Exit(1)
+	}
+}
+
+func runNode(ctx context.Context) error {
+	logrus.Infof("Running node with name prefix: %s", inputs.NodeName)
+	inputs.NodeName = fmt.Sprintf("%s-%s", inputs.NodeName, randSeq(3))
 
-		return p, nil, nil
-	}, withClient)
+	node, err := nodeutil.NewNode(inputs.NodeName, newSaladCloudProvider, withClient, withTaint)
 	if err != nil {
-		log.Fatal(err)
+		logrus.WithError(err).Error("Failed to create new node")
+		return err
 	}
 
 	go func() {
-		if err := node.Run(context.Background()); err != nil {
-			log.Fatal(err)
+		if err := node.Run(ctx); err != nil {
+			logrus.WithError(err).Error("Node runtime error")
 		}
 	}()
 
-	err = node.WaitReady(context.Background(), 0)
-	if err != nil {
-		log.Fatal(err)
+	if err = node.WaitReady(ctx, 0); err != nil {
+		logrus.WithError(err).Error("Node readiness error")
+		return err
 	}
 
 	<-node.Done()
-	err = node.Err()
+	if err = node.Err(); err != nil {
+		logrus.WithError(err).Error("Node finished with error")
+		return err
+	}
+	return nil
+}
+
+func newSaladCloudProvider(pc nodeutil.ProviderConfig) (nodeutil.Provider, node.NodeProvider, error) {
+	p, err := provider.NewSaladCloudProvider(context.Background(), inputs)
 	if err != nil {
-		log.Fatal(err)
+		logrus.WithError(err).Error("Failed to create SaladCloud provider")
+		return nil, nil, err
 	}
+	p.ConfigureNode(context.Background(), pc.Node)
+	return p, nil, nil
 }
 
-func withClient(cfg *nodeutil.NodeConfig) error {
-	var conf string
-	home, _ := homedir.Dir()
-	if home != "" {
-		conf = filepath.Join(home, ".kube", "config")
-	} else {
-		conf = "config"
+func withTaint(cfg *nodeutil.NodeConfig) error {
+	if inputs.DisableTaint {
+		return nil
 	}
 
-	client, err := nodeutil.ClientsetFromEnv(conf)
-	if err != nil {
+	taintEffect, validEffect := taintEffectMapping[inputs.TaintEffect]
+	if !validEffect {
+		err := errdefs.InvalidInputf("Taint effect %q is not supported", inputs.TaintEffect)
+		logrus.WithError(err).Error("Invalid taint effect provided")
 		return err
 	}
 
-	return nodeutil.WithClient(client)(cfg)
+	cfg.NodeSpec.Spec.Taints = append(cfg.NodeSpec.Spec.Taints, v1.Taint{
+		Key:    inputs.TaintKey,
+		Value:  inputs.TaintValue,
+		Effect: taintEffect,
+	})
+
+	return nil
 }
 
-var letters = []rune("0123456789abcdefghijklmnopqrstuvwxyz")
+func withClient(cfg *nodeutil.NodeConfig) error {
+	client, err := nodeutil.ClientsetFromEnv(inputs.KubeConfig)
+	if err != nil {
+		logrus.WithError(err).Error("Failed to retrieve clientset from environment")
+		return err
+	}
+	cfg.Client = client
+	return nil
+}
 
-// https://stackoverflow.com/a/22892986/2709066
 func randSeq(n int) string {
 	b := make([]rune, n)
 	for i := range b {
 		b[i] = letters[rand.Intn(len(letters))]
 	}
 	return string(b)
 }
+
+var virtualKubeletCommand = &cobra.Command{
+	Use:   binaryFilename,
+	Short: description,
+	Long:  description,
+	Run: func(cmd *cobra.Command, args []string) {
+		logger := logrus.StandardLogger()
+		if logLevel, err := logrus.ParseLevel(inputs.LogLevel); err == nil {
+			logger.SetLevel(logLevel)
+		} else {
+			logrus.WithError(err).Error("Failed to parse log level, defaulting to INFO")
+		}
+
+		ctx := log.WithLogger(cmd.Context(), logruslogger.FromLogrus(logrus.NewEntry(logger)))
+		if err := runNode(ctx); err != nil {
+			logrus.WithError(err).Fatal("Node failed to run")
+		}
+	},
+}
+
+func init() {
+	initCommandFlags()
+}

go.mod

@@ -1,8 +1,9 @@
 module github.com/SaladTechnologies/virtual-kubelet-saladcloud
 
-go 1.21.0
+go 1.20
 
 require (
+	github.com/lucklypriyansh-2/salad-client v0.0.0-20230902193233-7c5a02b4c6d7
 	github.com/prometheus/client_model v0.4.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/virtual-kubelet/virtual-kubelet v1.10.0
@@ -55,7 +56,7 @@ require (
 	github.com/prometheus/client_golang v1.16.0 // indirect
 	github.com/prometheus/common v0.44.0 // indirect
 	github.com/prometheus/procfs v0.10.1 // indirect
-	github.com/spf13/cobra v1.7.0 // indirect
+	github.com/spf13/cobra v1.7.0
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stoewer/go-strcase v1.2.0 // indirect
 	go.etcd.io/etcd/api/v3 v3.5.9 // indirect