feat: add new cli system (#51)

2025-12-21 13:23:03 +01:00 · 2022-10-01 16:21:02 -04:00
parent 551a146d94
commit 0daddf377c
17 changed files with 757 additions and 275 deletions
--- a/2
+++ b/2
@@ -8,7 +8,7 @@ WORKDIR /go/src/sablier

 ARG TARGETOS
 ARG TARGETARCH
-RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -buildvcs=false -o /go/bin/sablier
+RUN GIN_MODE=release GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -buildvcs=false -o /go/bin/sablier

 FROM alpine
 EXPOSE 10000
--- a/11
+++ b/11
@@ -5,9 +5,16 @@ os = $(word 1, $(temp))
 arch = $(word 2, $(temp))
 version = draft

-release: $(PLATFORMS)
+# Version info for binaries
+GIT_REVISION := $(shell git rev-parse --short HEAD)
+GIT_BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
+
+VPREFIX := github.com/acouvreur/sablier/version
+GO_LDFLAGS := -X $(VPREFIX).Branch=$(GIT_BRANCH) -X $(VPREFIX).Version=$(version) -X $(VPREFIX).Revision=$(GIT_REVISION) -X $(VPREFIX).BuildUser=$(shell whoami)@$(shell hostname) -X $(VPREFIX).BuildDate=$(shell date -u +"%Y-%m-%dT%H:%M:%SZ")

 $(PLATFORMS):
-	GOOS=$(os) GOARCH=$(arch) go build -o 'sablier_$(version)_$(os)-$(arch)' .
+	GIN_MODE=release GOOS=$(os) GOARCH=$(arch) go build -ldflags="${GO_LDFLAGS}" -o 'sablier_$(version)_$(os)-$(arch)' .

+
+release: $(PLATFORMS)
 .PHONY: release $(PLATFORMS)
--- a/README.md
+++ b/README.md
@@ -1,7 +1,33 @@
-# Sablier ![Github Actions](https://img.shields.io/github/workflow/status/acouvreur/sablier/Build?style=flat-square) ![Go Report](https://goreportcard.com/badge/github.com/acouvreur/sablier?style=flat-square) ![Go Version](https://img.shields.io/github/go-mod/go-version/acouvreur/sablier?style=flat-square) ![Latest Release](https://img.shields.io/github/release/acouvreur/sablier/all.svg?style=flat-square)
+# Sablier
+
+![Github Actions](https://img.shields.io/github/workflow/status/acouvreur/sablier/Build?style=flat-square) ![Go Report](https://goreportcard.com/badge/github.com/acouvreur/sablier?style=flat-square) ![Go Version](https://img.shields.io/github/go-mod/go-version/acouvreur/sablier?style=flat-square) ![Latest Release](https://img.shields.io/github/release/acouvreur/sablier/all.svg?style=flat-square)
+
+Sablier is an API that start containers on demand.
+It provides an integrations with multiple reverse proxies and different loading strategies.
+
+- [Sablier](#sablier)
+  - [Getting started](#getting-started)
+  - [Features](#features)
+  - [CLI Usage](#cli-usage)
+  - [Configuration](#configuration)
+  - [Reverse proxies integration plugins](#reverse-proxies-integration-plugins)
+    - [Traefik Integration](#traefik-integration)
+  - [Kubernetes](#kubernetes)
+  - [API](#api)

 ## Getting started

+Binary
+
+```bash
+docker run -d --name nginx nginx
+docker stop nginx
+./sablier start
+curl 'http://localhost:10000/?name=nginx&timeout=1m'
+```
+
+Docker
+
 ```bash
 docker run -d --name nginx nginx
 docker stop nginx
@@ -9,8 +35,6 @@ docker run -v /var/run/docker.sock:/var/run/docker.sock -p 10000:10000 ghcr.io/a
 curl 'http://localhost:10000/?name=nginx&timeout=1m'
 ```

-## Plugins
-
 ## Features

 - Support for **Docker** containers
@@ -21,32 +45,70 @@ curl 'http://localhost:10000/?name=nginx&timeout=1m'
 - Dynamic loading page (cloudflare or grafana cloud style)
 - Customize dynamic and loading pages

-## Usage
+## CLI Usage

-`docker run -v /var/run/docker.sock:/var/run/docker.sock -p 10000:10000 ghcr.io/acouvreur/sablier:latest --swarmode=true`
+```
+Usage:
+  sablier [command]

-### CLI
+Available Commands:
+  completion  Generate the autocompletion script for the specified shell
+  help        Help about any command
+  start       Start the Sablier server
+  version     Print the version Sablier

-`./sablier --swarmMode=true --kubernetesMode=false`
+Flags:
+  -h, --help   help for sablier

-| Argument         | Value                              | Description                                                                                                                                                  |
-| ---------------- | ---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ |
-| `swarmMode`      | true,false (default true)          | Enable/Disable swarm mode. Used to determine the scaler implementation.                                                                                      |
-| `kubernetesMode` | true,false (default false)         | Enable/Disable Kubernetes mode. Used to determine the scaler implementation.                                                                                 |
-| `storagePath`    | path/to/storage/file (default nil) | Enables persistent storage, file will be used to load previous state upon starting and will sync the current content to memory into the file every 5 seconds |
+Use "sablier [command] --help" for more information about a command.
+```

-### Docker
+Start options

- Docker Hub `acouvreur/sablier`
- Ghcr `ghcr.io/acouvreur/sablier`
+```
+Start the Sablier server

-`docker run -v /var/run/docker.sock:/var/run/docker.sock -p 10000:10000 ghcr.io/acouvreur/sablier:latest --swarmode=true`
+Usage:
+  sablier start [flags]

-### Kubernetes
+Flags:
+  -h, --help                      help for start
+      --provider.name string      Provider to use to manage containers [docker swarm kubernetes] (default "docker")
+      --server.base-path string   The base path for the API (default "/")
+      --server.port int           The server port to use (default 10000)
+      --storage.file string       File path to save the state
+```

-see <a href="https://github.com/acouvreur/sablier/blob/main/KUBERNETES.md">KUBERNETES.md</a>
+## Configuration

-### API
+Sablier can be configured in that order:
+
+1. command line arguments
+2. environment variable
+3. config.yaml file
+
+```yaml
+server:
+  port: 10000
+  basePath: /
+storage:
+  file: 
+provider:
+  name: docker # available providers are docker, swarm and kubernetes
+```
+
+## Reverse proxies integration plugins
+
+### Traefik Integration
+
+see [Traefik Integration](./plugins/traefik/README.md)
+
+
+## Kubernetes
+
+see [KUBERNETES.md](https://github.com/acouvreur/sablier/blob/main/KUBERNETES.md)
+
+## API

 ```
 GET <service_url>:10000/?name=<service_name>&timeout=<timeout>
--- a/app/middleware/logging.go
+++ b/app/middleware/logging.go
@@ -0,0 +1,78 @@
+package middleware
+
+import (
+	"fmt"
+	"math"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/sirupsen/logrus"
+)
+
+var timeFormat = "02/Jan/2006:15:04:05 -0700"
+
+// Logger is the logrus logger handler
+func Logger(logger logrus.FieldLogger, notLogged ...string) gin.HandlerFunc {
+	hostname, err := os.Hostname()
+	if err != nil {
+		hostname = "unknow"
+	}
+
+	var skip map[string]struct{}
+
+	if length := len(notLogged); length > 0 {
+		skip = make(map[string]struct{}, length)
+
+		for _, p := range notLogged {
+			skip[p] = struct{}{}
+		}
+	}
+
+	return func(c *gin.Context) {
+		// other handler can change c.Path so:
+		path := c.Request.URL.Path
+		start := time.Now()
+		c.Next()
+		stop := time.Since(start)
+		latency := int(math.Ceil(float64(stop.Nanoseconds()) / 1000000.0))
+		statusCode := c.Writer.Status()
+		clientIP := c.ClientIP()
+		clientUserAgent := c.Request.UserAgent()
+		referer := c.Request.Referer()
+		dataLength := c.Writer.Size()
+		if dataLength < 0 {
+			dataLength = 0
+		}
+
+		if _, ok := skip[path]; ok {
+			return
+		}
+
+		entry := logger.WithFields(logrus.Fields{
+			"hostname":   hostname,
+			"statusCode": statusCode,
+			"latency":    latency, // time to process
+			"clientIP":   clientIP,
+			"method":     c.Request.Method,
+			"path":       path,
+			"referer":    referer,
+			"dataLength": dataLength,
+			"userAgent":  clientUserAgent,
+		})
+
+		if len(c.Errors) > 0 {
+			entry.Error(c.Errors.ByType(gin.ErrorTypePrivate).String())
+		} else {
+			msg := fmt.Sprintf("%s - %s [%s] \"%s %s\" %d %d \"%s\" \"%s\" (%dms)", clientIP, hostname, time.Now().Format(timeFormat), c.Request.Method, path, statusCode, dataLength, referer, clientUserAgent, latency)
+			if statusCode >= http.StatusInternalServerError {
+				entry.Error(msg)
+			} else if statusCode >= http.StatusBadRequest {
+				entry.Warn(msg)
+			} else {
+				entry.Info(msg)
+			}
+		}
+	}
+}
--- a/app/sablier.go
+++ b/app/sablier.go
@@ -0,0 +1,190 @@
+package app
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/acouvreur/sablier/app/middleware"
+	"github.com/acouvreur/sablier/config"
+	"github.com/acouvreur/sablier/pkg/scaler"
+	"github.com/acouvreur/sablier/pkg/storage"
+	"github.com/acouvreur/tinykv"
+	"github.com/docker/docker/client"
+	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+)
+
+type OnDemandRequestState struct {
+	State string `json:"state"`
+	Name  string `json:"name"`
+}
+
+func Start(conf config.Config) error {
+
+	scaler, err := initScaler(conf.Provider)
+	if err != nil {
+		return (err)
+	}
+	log.Infof("using provider \"%s\"", conf.Provider.Name)
+
+	store, err := initRuntimeStorage(scaler)
+	if err != nil {
+		return (err)
+	}
+
+	err = initPersistentStorage(conf.Storage, store)
+	if err != nil {
+		return (err)
+	}
+
+	err = initServer(conf.Server, scaler, store)
+	if err != nil {
+		return (err)
+	}
+
+	return nil
+}
+
+func initScaler(conf config.Provider) (scaler.Scaler, error) {
+
+	err := conf.IsValid()
+	if err != nil {
+		return nil, err
+	}
+
+	switch {
+	case conf.Name == "swarm":
+		cli, err := client.NewClientWithOpts()
+		if err != nil {
+			log.Fatal(fmt.Errorf("%+v", "Could not connect to docker API"))
+		}
+		return &scaler.DockerSwarmScaler{
+			Client: cli,
+		}, nil
+	case conf.Name == "docker":
+		cli, err := client.NewClientWithOpts()
+		if err != nil {
+			log.Fatal(fmt.Errorf("%+v", "Could not connect to docker API"))
+		}
+		return &scaler.DockerClassicScaler{
+			Client: cli,
+		}, nil
+	case conf.Name == "kubernetes":
+		config, err := rest.InClusterConfig()
+		if err != nil {
+			log.Fatal(err)
+		}
+		client, err := kubernetes.NewForConfig(config)
+		if err != nil {
+			log.Fatal(err)
+		}
+		return scaler.NewKubernetesScaler(client), nil
+	}
+
+	return nil, fmt.Errorf("unimplemented provider %s", conf.Name)
+}
+
+func initRuntimeStorage(scaler scaler.Scaler) (tinykv.KV[OnDemandRequestState], error) {
+	// TODO: Add some checks
+	return tinykv.New(time.Second*20, func(key string, _ OnDemandRequestState) {
+		// Auto scale down after timeout
+		err := scaler.ScaleDown(key)
+
+		if err != nil {
+			log.Warnf("error scaling down %s: %s", key, err.Error())
+		}
+	}), nil
+}
+
+func initPersistentStorage(config config.Storage, store tinykv.KV[OnDemandRequestState]) error {
+	if len(config.File) > 0 {
+		file, err := os.OpenFile(config.File, os.O_RDWR|os.O_CREATE, 0755)
+
+		if err != nil {
+			return err
+		}
+
+		// TODO: Add data check
+		json.NewDecoder(file).Decode(store)
+		storage.New(file, time.Second*5, store)
+		log.Infof("initialized storage to %s", config.File)
+	} else {
+		log.Infof("no storage configuration provided. all states will be lost upon exit")
+	}
+	return nil
+}
+
+func initServer(conf config.Server, scaler scaler.Scaler, store tinykv.KV[OnDemandRequestState]) error {
+	r := gin.Default()
+
+	r.Use(middleware.Logger(log.New()), gin.Recovery())
+
+	base := r.Group(conf.BasePath)
+	{
+		base.GET("/", onDemand(scaler, store))
+	}
+
+	r.Run(fmt.Sprintf(":%d", conf.Port))
+	return nil
+}
+
+func onDemand(scaler scaler.Scaler, store tinykv.KV[OnDemandRequestState]) func(c *gin.Context) {
+	return func(c *gin.Context) {
+
+		name := c.Query("name")
+		to := c.Query("timeout")
+
+		if name == "" || to == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "name or timeout empty"})
+			return
+		}
+
+		timeout, err := time.ParseDuration(to)
+
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+			return
+		}
+
+		requestState, exists := store.Get(name)
+
+		// 1. Check against the current state
+		if !exists || requestState.State != "started" {
+			if scaler.IsUp(name) {
+				requestState = OnDemandRequestState{
+					State: "started",
+					Name:  name,
+				}
+			} else {
+				requestState = OnDemandRequestState{
+					State: "starting",
+					Name:  name,
+				}
+				err := scaler.ScaleUp(name)
+
+				if err != nil {
+					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					return
+				}
+			}
+		}
+
+		// 2. Store the updated state
+		store.Put(name, requestState, tinykv.ExpiresAfter(timeout))
+
+		// 3. Serve depending on the current state
+		switch requestState.State {
+		case "starting":
+			c.JSON(http.StatusAccepted, gin.H{"state": requestState.State})
+		case "started":
+			c.JSON(http.StatusCreated, gin.H{"state": requestState.State})
+		default:
+			c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Errorf("unknown state %s", requestState.State)})
+		}
+	}
+}
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -0,0 +1,100 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/acouvreur/sablier/config"
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+)
+
+const (
+	// The name of our config file, without the file extension because viper supports many different config file languages.
+	defaultConfigFilename = "config"
+)
+
+var (
+	rootCmd = &cobra.Command{
+		Use:   "sablier",
+		Short: "A webserver to start container on demand",
+		Long: `Sablier is an API that start containers on demand.
+It provides an integrations with multiple reverse proxies and different loading strategies.`,
+		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+			// You can bind cobra and viper in a few locations, but PersistencePreRunE on the root command works well
+			return initializeConfig(cmd)
+		},
+	}
+)
+
+// Execute executes the root command.
+func Execute() error {
+	return rootCmd.Execute()
+}
+
+var conf = config.NewConfig()
+
+func init() {
+
+	rootCmd.AddCommand(startCmd)
+	// Provider flags
+	startCmd.Flags().StringVar(&conf.Provider.Name, "provider.name", "docker", fmt.Sprintf("Provider to use to manage containers %v", config.GetProviders()))
+	viper.BindPFlag("provider.name", startCmd.Flags().Lookup("provider.name"))
+	// Server flags
+	startCmd.Flags().IntVar(&conf.Server.Port, "server.port", 10000, "The server port to use")
+	viper.BindPFlag("server.port", startCmd.Flags().Lookup("server.port"))
+	startCmd.Flags().StringVar(&conf.Server.BasePath, "server.base-path", "/", "The base path for the API")
+	viper.BindPFlag("server.base-path", startCmd.Flags().Lookup("server.base-path"))
+	// Storage flags
+	startCmd.Flags().StringVar(&conf.Storage.File, "storage.file", "", "File path to save the state")
+	viper.BindPFlag("storage.file", startCmd.Flags().Lookup("storage.file"))
+
+	rootCmd.AddCommand(versionCmd)
+}
+
+func initializeConfig(cmd *cobra.Command) error {
+	v := viper.New()
+
+	// Set the base name of the config file, without the file extension.
+	v.SetConfigName(defaultConfigFilename)
+
+	// Set as many paths as you like where viper should look for the
+	// config file. We are only looking in the current working directory.
+	v.AddConfigPath(".")
+
+	// Attempt to read the config file, gracefully ignoring errors
+	// caused by a config file not being found. Return an error
+	// if we cannot parse the config file.
+	if err := v.ReadInConfig(); err != nil {
+		// It's okay if there isn't a config file
+		if _, ok := err.(viper.ConfigFileNotFoundError); !ok {
+			return err
+		}
+	}
+
+	// Bind to environment variables
+	// Works great for simple config names, but needs help for names
+	// like --favorite-color which we fix in the bindFlags function
+	v.AutomaticEnv()
+
+	// Bind the current command's flags to viper
+	bindFlags(cmd, v)
+
+	return nil
+}
+
+// Bind each cobra flag to its associated viper configuration (config file and environment variable)
+func bindFlags(cmd *cobra.Command, v *viper.Viper) {
+	cmd.Flags().VisitAll(func(f *pflag.Flag) {
+		envVarSuffix := strings.ToUpper(strings.ReplaceAll(f.Name, "-", "_"))
+		envVarSuffix = strings.ToUpper(strings.ReplaceAll(envVarSuffix, ".", "_"))
+		v.BindEnv(f.Name, envVarSuffix)
+
+		// Apply the viper config value to the flag when the flag is not set and viper has a value
+		if !f.Changed && v.IsSet(f.Name) {
+			val := v.Get(f.Name)
+			cmd.Flags().Set(f.Name, fmt.Sprintf("%v", val))
+		}
+	})
+}
--- a/cmd/start.go
+++ b/cmd/start.go
@@ -0,0 +1,22 @@
+package cmd
+
+import (
+	"github.com/acouvreur/sablier/app"
+	"github.com/acouvreur/sablier/config"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var startCmd = &cobra.Command{
+	Use:   "start",
+	Short: "Start the Sablier server",
+	Run: func(cmd *cobra.Command, args []string) {
+		conf := config.NewConfig()
+		viper.Unmarshal(&conf)
+
+		err := app.Start(conf)
+		if err != nil {
+			panic(err)
+		}
+	},
+}
--- a/cmd/version.go
+++ b/cmd/version.go
@@ -0,0 +1,16 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/acouvreur/sablier/version"
+	"github.com/spf13/cobra"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version Sablier",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println(version.Info())
+	},
+}
--- a/config/configuration.go
+++ b/config/configuration.go
@@ -0,0 +1,15 @@
+package config
+
+type Config struct {
+	Server   Server
+	Storage  Storage
+	Provider Provider
+}
+
+func NewConfig() Config {
+	return Config{
+		Server:   NewServerConfig(),
+		Storage:  NewStorageConfig(),
+		Provider: NewProviderConfig(),
+	}
+}
--- a/config/provider.go
+++ b/config/provider.go
@@ -0,0 +1,32 @@
+package config
+
+import (
+	"fmt"
+)
+
+// Provider holds the provider description
+// It can be either docker, swarm or kubernetes
+type Provider struct {
+	Name string `mapstructure:"NAME" yaml:"provider,omitempty"`
+}
+
+var providers = []string{"docker", "swarm", "kubernetes"}
+
+func NewProviderConfig() Provider {
+	return Provider{
+		Name: "docker",
+	}
+}
+
+func (provider Provider) IsValid() error {
+	for _, p := range providers {
+		if p == provider.Name {
+			return nil
+		}
+	}
+	return fmt.Errorf("unrecognized provider %s. providers available: %v", provider.Name, providers)
+}
+
+func GetProviders() []string {
+	return providers
+}
--- a/config/server.go
+++ b/config/server.go
@@ -0,0 +1,13 @@
+package config
+
+type Server struct {
+	Port     int    `mapstructure:"PORT" yaml:"port" default:"10000"`
+	BasePath string `mapstructure:"BASEPATH" yaml:"basePath" default:"/"`
+}
+
+func NewServerConfig() Server {
+	return Server{
+		Port:     10000,
+		BasePath: "/",
+	}
+}
--- a/config/storage.go
+++ b/config/storage.go
@@ -0,0 +1,11 @@
+package config
+
+type Storage struct {
+	File string `mapstructure:"FILE" yaml:"file" default:""`
+}
+
+func NewStorageConfig() Storage {
+	return Storage{
+		File: "",
+	}
+}
--- a/go.mod
+++ b/go.mod
@@ -8,11 +8,11 @@ require (
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.7.1
-	golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4 // indirect
-	golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6 // indirect
+	github.com/stretchr/testify v1.8.0
+	golang.org/x/net v0.0.0-20220930213112-107f3e3c3b0b // indirect
+	golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec // indirect
 	golang.org/x/time v0.0.0-20220411224347-583f2d630306 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/apimachinery v0.24.0
 	k8s.io/client-go v0.24.0
 )
@@ -27,33 +27,58 @@ require (
 	github.com/docker/distribution v2.8.1+incompatible // indirect
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/emicklei/go-restful v2.15.0+incompatible // indirect
+	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.8.1 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.20.0 // indirect
 	github.com/go-openapi/swag v0.21.1 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-playground/validator/v10 v10.11.1 // indirect
+	github.com/goccy/go-json v0.9.11 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/gnostic v0.6.9 // indirect
 	github.com/google/go-cmp v0.5.8 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799 // indirect
+	github.com/pelletier/go-toml v1.9.5 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/objx v0.3.0 // indirect
+	github.com/spf13/afero v1.8.2 // indirect
+	github.com/spf13/cast v1.5.0 // indirect
+	github.com/spf13/cobra v1.5.0 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.13.0 // indirect
+	github.com/stretchr/objx v0.4.0 // indirect
+	github.com/subosito/gotenv v1.4.1 // indirect
+	github.com/ugorji/go/codec v1.2.7 // indirect
+	golang.org/x/crypto v0.0.0-20220926161630-eccd6366d1be // indirect
 	golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5 // indirect
 	golang.org/x/term v0.0.0-20220411215600-e5f449aeb171 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gotest.tools/v3 v3.0.3 // indirect
 	k8s.io/klog/v2 v2.60.1 // indirect
--- a/go.sum
+++ b/go.sum
@@ -3,6 +3,7 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
 cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.44.3/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
 cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
 cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
 cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
@@ -15,6 +16,7 @@ cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOY
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
 cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
@@ -35,6 +37,7 @@ cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0Zeo
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
+cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
@@ -69,6 +72,7 @@ github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGX
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
+github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -102,8 +106,14 @@ github.com/form3tech-oss/jwt-go v3.2.3+incompatible/go.mod h1:pbq4aXjuKjdthFRnoD
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI=
+github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU=
 github.com/getkin/kin-openapi v0.76.0/go.mod h1:660oXbgy5JFMKreazJaQTw7o+X00qeSyhcnluiMv+Xg=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
+github.com/gin-gonic/gin v1.8.1 h1:4+fr/el88TOO3ewCmQr8cx/CtZ/umlIRIs5M4NTNjf8=
+github.com/gin-gonic/gin v1.8.1/go.mod h1:ji8BvRH1azfM+SYow9zQ6SZMvR8qOMZHmsCuWR9tTTk=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -123,6 +133,15 @@ github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh
 github.com/go-openapi/swag v0.19.14/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ=
 github.com/go-openapi/swag v0.21.1 h1:wm0rhTb5z7qpJRHBdPOMuY4QjVUMbF6/kwoYeRAOrKU=
 github.com/go-openapi/swag v0.21.1/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ=
+github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.14.0 h1:u50s323jtVGugKlcYeyzC0etD1HifMjqmJqb8WugfUU=
+github.com/go-playground/locales v0.14.0/go.mod h1:sawfccIbzZTqEDETgFXqTho0QybSa7l++s0DH+LDiLs=
+github.com/go-playground/universal-translator v0.18.0 h1:82dyy6p4OuJq4/CByFNOn/jYrnRPArHwAcmLoJZxyho=
+github.com/go-playground/universal-translator v0.18.0/go.mod h1:UvRDBj+xPUEGrFYl+lu/H90nyDXpg0fqeB/AQUGNTVA=
+github.com/go-playground/validator/v10 v10.11.1 h1:prmOlTVv+YjZjmRmNSF3VmspqJIxJWXmqUsHwfTRRkQ=
+github.com/go-playground/validator/v10 v10.11.1/go.mod h1:i+3WkQ1FvaUjjxh1kSvIA4dMGDBiPU55YFDl0WbKdWU=
+github.com/goccy/go-json v0.9.11 h1:/pAaQDLHEoCq/5FFmSKBswWmK6H0e8g4159Kc/X/nqk=
+github.com/goccy/go-json v0.9.11/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@@ -191,22 +210,29 @@ github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hf
 github.com/google/pprof v0.0.0-20200708004538-1a94d8640e99/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/pprof v0.0.0-20201023163331-3e6fc7fc9c4c/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/pprof v0.0.0-20201203190320-1bf35d6f28c2/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
+github.com/google/pprof v0.0.0-20201218002935-b9804c9f04c2/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/pprof v0.0.0-20210122040257-d980be63207e/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/pprof v0.0.0-20210226084205-cbba55b83ad5/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
+github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
+github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
+github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
@@ -216,18 +242,29 @@ github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/leodido/go-urn v1.2.1 h1:BqpAaACuzVSgi/VLzGZIobT2z4v53pjosyNd9Yv6n/w=
+github.com/leodido/go-urn v1.2.1/go.mod h1:zt4jvISO2HfUBqxjfIshjdMTYS56ZS/qv49ictyFfxY=
+github.com/magiconair/properties v1.8.6 h1:5ibWZ6iY0NctNGWo87LalDlEZ6R41TqbbDamhfG/Qzo=
+github.com/magiconair/properties v1.8.6/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
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@@ -260,27 +297,48 @@ github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8
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@@ -289,6 +347,14 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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@@ -311,7 +377,12 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
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@@ -379,6 +450,7 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
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@@ -388,6 +460,10 @@ golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qx
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@@ -452,18 +528,27 @@ golang.org/x/sys v0.0.0-20210104204734-6f8348627aad/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220209214540-3681064d5158/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6 h1:nonptSpoQ4vQjyraW20DXPAglgQfVnM9ZC6MmNLMR60=
 golang.org/x/sys v0.0.0-20220503163025-988cb79eb6c6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec h1:BkDtF2Ih9xZ7le9ndzTA7KJow28VbQW3odyk/8drmuI=
+golang.org/x/sys v0.0.0-20220928140112-f11e5e49a4ec/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.0.0-20220411215600-e5f449aeb171 h1:EH1Deb8WZJ0xc0WK//leUHXcX9aLE5SymusoTmMZye8=
@@ -533,6 +618,7 @@ golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4f
 golang.org/x/tools v0.0.0-20201208233053-a543418bbed2/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -540,6 +626,7 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df h1:5Pf6pFKu98ODmgnpvkJ3kFUOQGGLIzLIkbzUHp47618=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
 google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
@@ -605,7 +692,9 @@ google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210222152913-aa3ee6e6a81c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210226172003-ab064af71705/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210319143718-93e7006c17a6/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
@@ -646,15 +735,21 @@ google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -669,6 +764,8 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=
 gotest.tools/v3 v3.0.3 h1:4AuOwCGf4lLR9u3YOe2awrHygurzhO/HeQ6laiA6Sx0=
 gotest.tools/v3 v3.0.3/go.mod h1:Z7Lb0S5l+klDB31fvDQX8ss/FlKDxtlFlw3Oa8Ymbl8=
--- a/main.go
+++ b/main.go
@@ -1,178 +1,9 @@
 package main

 import (
-	"encoding/json"
-	"flag"
-	"fmt"
-	"net/http"
-	"net/url"
-	"os"
-	"time"
-
-	"github.com/acouvreur/tinykv"
-	"github.com/acouvreur/sablier/pkg/scaler"
-	"github.com/acouvreur/sablier/pkg/storage"
-	"github.com/docker/docker/client"
-	log "github.com/sirupsen/logrus"
-	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/rest"
+	"github.com/acouvreur/sablier/cmd"
 )

-type OnDemandRequestState struct {
-	State string `json:"state"`
-	Name  string `json:"name"`
-}
-
 func main() {
-
-	swarmMode := flag.Bool("swarmMode", true, "Enable swarm mode")
-	kubernetesMode := flag.Bool("kubernetesMode", false, "Enable Kubernetes mode")
-	storagePath := flag.String("storagePath", "", "Enable persistent storage")
-
-	flag.Parse()
-
-	dockerScaler := getDockerScaler(*swarmMode, *kubernetesMode)
-
-	store := tinykv.New[OnDemandRequestState](time.Second*20, func(key string, _ OnDemandRequestState) {
-		// Auto scale down after timeout
-		err := dockerScaler.ScaleDown(key)
-
-		if err != nil {
-			log.Warnf("error scaling down %s: %s", key, err.Error())
-		}
-	})
-
-	if storagePath != nil && len(*storagePath) > 0 {
-		file, err := os.OpenFile(*storagePath, os.O_RDWR|os.O_CREATE, 0755)
-
-		if err != nil {
-			panic(err)
-		}
-
-		json.NewDecoder(file).Decode(store)
-		storage.New(file, time.Second*5, store)
-	}
-
-	fmt.Printf("Server listening on port 10000, swarmMode: %t, kubernetesMode: %t\n", *swarmMode, *kubernetesMode)
-	http.HandleFunc("/", onDemand(dockerScaler, store))
-	log.Fatal(http.ListenAndServe(":10000", nil))
-}
-
-func getDockerScaler(swarmMode, kubernetesMode bool) scaler.Scaler {
-	cliMode := !swarmMode && !kubernetesMode
-
-	switch {
-	case swarmMode:
-		cli, err := client.NewClientWithOpts()
-		if err != nil {
-			log.Fatal(fmt.Errorf("%+v", "Could not connect to docker API"))
-		}
-		return &scaler.DockerSwarmScaler{
-			Client: cli,
-		}
-	case cliMode:
-		cli, err := client.NewClientWithOpts()
-		if err != nil {
-			log.Fatal(fmt.Errorf("%+v", "Could not connect to docker API"))
-		}
-		return &scaler.DockerClassicScaler{
-			Client: cli,
-		}
-	case kubernetesMode:
-		config, err := rest.InClusterConfig()
-		if err != nil {
-			log.Fatal(err)
-		}
-		client, err := kubernetes.NewForConfig(config)
-		if err != nil {
-			log.Fatal(err)
-		}
-		return scaler.NewKubernetesScaler(client)
-	}
-
-	panic("invalid mode")
-}
-
-func onDemand(scaler scaler.Scaler, store tinykv.KV[OnDemandRequestState]) func(w http.ResponseWriter, r *http.Request) {
-	return func(rw http.ResponseWriter, r *http.Request) {
-
-		name, err := getParam(r.URL.Query(), "name")
-
-		if err != nil {
-			ServeHTTPInternalError(rw, err)
-			return
-		}
-
-		to, err := getParam(r.URL.Query(), "timeout")
-
-		if err != nil {
-			ServeHTTPInternalError(rw, err)
-			return
-		}
-
-		timeout, err := time.ParseDuration(to)
-
-		if err != nil {
-			ServeHTTPInternalError(rw, err)
-			return
-		}
-
-		requestState, exists := store.Get(name)
-
-		// 1. Check against the current state
-		if !exists || requestState.State != "started" {
-			if scaler.IsUp(name) {
-				requestState = OnDemandRequestState{
-					State: "started",
-					Name:  name,
-				}
-			} else {
-				requestState = OnDemandRequestState{
-					State: "starting",
-					Name:  name,
-				}
-				err := scaler.ScaleUp(name)
-
-				if err != nil {
-					ServeHTTPInternalError(rw, err)
-					return
-				}
-			}
-		}
-
-		// 2. Store the updated state
-		store.Put(name, requestState, tinykv.ExpiresAfter(timeout))
-
-		// 3. Serve depending on the current state
-		switch requestState.State {
-		case "starting":
-			ServeHTTPRequestState(rw, requestState)
-		case "started":
-			ServeHTTPRequestState(rw, requestState)
-		default:
-			ServeHTTPInternalError(rw, fmt.Errorf("unknown state %s", requestState.State))
-		}
-	}
-}
-
-func getParam(queryParams url.Values, paramName string) (string, error) {
-	if queryParams[paramName] == nil {
-		return "", fmt.Errorf("%s is required", paramName)
-	}
-	return queryParams[paramName][0], nil
-}
-
-func ServeHTTPInternalError(rw http.ResponseWriter, err error) {
-	rw.WriteHeader(http.StatusInternalServerError)
-	rw.Write([]byte(err.Error()))
-}
-
-func ServeHTTPRequestState(rw http.ResponseWriter, requestState OnDemandRequestState) {
-	rw.Header().Set("Content-Type", "text/plain")
-	if requestState.State == "started" {
-		rw.WriteHeader(http.StatusCreated)
-	} else {
-		rw.WriteHeader(http.StatusAccepted)
-	}
-	rw.Write([]byte(requestState.State))
+	cmd.Execute()
 }
--- a/main_test.go
+++ b/main_test.go
@@ -1,76 +0,0 @@
-package main
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"testing"
-	"time"
-
-	"github.com/acouvreur/tinykv"
-)
-
-type ScalerMock struct {
-	isUp bool
-}
-
-func (s ScalerMock) IsUp(name string) bool {
-	return s.isUp
-}
-
-func (ScalerMock) ScaleUp(name string) error { return nil }
-
-func (ScalerMock) ScaleDown(name string) error { return nil }
-
-func TestOndemand_ServeHTTP(t *testing.T) {
-	testCases := []struct {
-		desc        string
-		scaler      ScalerMock
-		status      string
-		statusCode  int
-		contentType string
-	}{
-		{
-			desc:        "service is starting",
-			status:      "starting",
-			scaler:      ScalerMock{isUp: false},
-			statusCode:  http.StatusAccepted,
-			contentType: "text/plain",
-		},
-		{
-			desc:        "service is started",
-			status:      "started",
-			scaler:      ScalerMock{isUp: true},
-			statusCode:  http.StatusCreated,
-			contentType: "text/plain",
-		},
-	}
-
-	for _, test := range testCases {
-		test := test
-		t.Run(test.desc, func(t *testing.T) {
-
-			t.Logf("IsUp: %t", test.scaler.isUp)
-			request := httptest.NewRequest("GET", "/?name=whoami&timeout=5m", nil)
-			responseRecorder := httptest.NewRecorder()
-
-			store := tinykv.New[OnDemandRequestState](time.Second * 20)
-
-			onDemandHandler := onDemand(test.scaler, store)
-			onDemandHandler(responseRecorder, request)
-
-			body := responseRecorder.Body.String()
-
-			if responseRecorder.Code != test.statusCode {
-				t.Errorf("Want status '%d', got '%d'", test.statusCode, responseRecorder.Code)
-			}
-
-			if responseRecorder.Body.String() != test.status {
-				t.Errorf("Want body '%s', got '%s'", test.status, body)
-			}
-
-			if responseRecorder.Header().Get("Content-Type") != test.contentType {
-				t.Errorf("Want content type '%s', got '%s'", test.contentType, responseRecorder.Header().Get("Content-Type"))
-			}
-		})
-	}
-}
--- a/version/info.go
+++ b/version/info.go
@@ -0,0 +1,59 @@
+package version
+
+import (
+	"bytes"
+	"fmt"
+	"runtime"
+	"strings"
+	"text/template"
+)
+
+// Build information. Populated at build-time.
+var (
+	Version   string
+	Revision  string
+	Branch    string
+	BuildUser string
+	BuildDate string
+	GoVersion = runtime.Version()
+)
+
+// versionInfoTmpl contains the template used by Info.
+var versionInfoTmpl = `
+{{.program}}, version {{.version}} (branch: {{.branch}}, revision: {{.revision}})
+  build user:       {{.buildUser}}
+  build date:       {{.buildDate}}
+  go version:       {{.goVersion}}
+  platform:         {{.platform}}
+`
+
+// Print returns version information.
+func Print(program string) string {
+	m := map[string]string{
+		"program":   program,
+		"version":   Version,
+		"revision":  Revision,
+		"branch":    Branch,
+		"buildUser": BuildUser,
+		"buildDate": BuildDate,
+		"goVersion": GoVersion,
+		"platform":  runtime.GOOS + "/" + runtime.GOARCH,
+	}
+	t := template.Must(template.New("version").Parse(versionInfoTmpl))
+
+	var buf bytes.Buffer
+	if err := t.ExecuteTemplate(&buf, "version", m); err != nil {
+		panic(err)
+	}
+	return strings.TrimSpace(buf.String())
+}
+
+// Info returns version, branch and revision information.
+func Info() string {
+	return fmt.Sprintf("(version=%s, branch=%s, revision=%s)", Version, Branch, Revision)
+}
+
+// BuildContext returns goVersion, buildUser and buildDate information.
+func BuildContext() string {
+	return fmt.Sprintf("(go=%s, user=%s, date=%s)", GoVersion, BuildUser, BuildDate)
+}