feat: http server

Signed-off-by: AlexsJones <alexsimonjones@gmail.com>

cmd/root.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/k8sgpt-ai/k8sgpt/cmd/filters"
 	"github.com/k8sgpt-ai/k8sgpt/cmd/generate"
+	"github.com/k8sgpt-ai/k8sgpt/cmd/serve"
 	"k8s.io/client-go/util/homedir"
 
 	"github.com/fatih/color"
@@ -54,13 +55,14 @@ func init() {
 	rootCmd.AddCommand(analyze.AnalyzeCmd)
 	rootCmd.AddCommand(filters.FiltersCmd)
 	rootCmd.AddCommand(generate.GenerateCmd)
+	rootCmd.AddCommand(serve.ServeCmd)
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.k8sgpt.yaml)")
 	rootCmd.PersistentFlags().StringVar(&kubecontext, "kubecontext", "", "Kubernetes context to use. Only required if out-of-cluster.")
 	rootCmd.PersistentFlags().StringVar(&kubeconfig, "kubeconfig", kubeconfigPath, "Path to a kubeconfig. Only required if out-of-cluster.")
 	// Cobra also supports local flags, which will only run
 	// when this action is called directly.
 	// rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
-
+	viper.Set("rootCmd", rootCmd)
 }
 
 // initConfig reads in config file and ENV variables if set.

cmd/serve/serve.go

@@ -0,0 +1,54 @@
+package serve
+
+import (
+	"io/ioutil"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/julienschmidt/httprouter"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var (
+	port string
+)
+
+// generateCmd represents the auth command
+var ServeCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "",
+	Long:  ``,
+	Run: func(cmd *cobra.Command, args []string) {
+
+		rootCmd := viper.Get("rootCmd").(*cobra.Command)
+		// Start http server
+		router := httprouter.New()
+		router.GET("/:command", func(w http.ResponseWriter,
+			r *http.Request, p httprouter.Params) {
+
+			// find the command
+			command := p.ByName("command")
+			cmd, string, err := rootCmd.Find([]string{command})
+			if err != nil {
+				w.Write([]byte(err.Error()))
+			}
+			old := os.Stdout // keep backup of the real stdout
+			rd, d, _ := os.Pipe()
+			os.Stdout = d
+			cmd.Run(cmd, string)
+			d.Close()
+			out, _ := ioutil.ReadAll(rd)
+			os.Stdout = old // restoring the real stdout
+			w.Write(out)
+		})
+
+		log.Fatal(http.ListenAndServe(":8080", router))
+	},
+}
+
+func init() {
+	// add flag for backend
+	ServeCmd.Flags().StringVarP(&port, "port", "p", "8080", "Port to serve on")
+}

cmd/version.go

@@ -1,6 +1,8 @@
 package cmd
 
 import (
+	"fmt"
+
 	"github.com/spf13/cobra"
 )
 
@@ -10,7 +12,7 @@ var versionCmd = &cobra.Command{
 	Short: "Print the version number of k8sgpt",
 	Long:  `All software has versions. This is k8sgpt's`,
 	Run: func(cmd *cobra.Command, args []string) {
-		cmd.Printf("k8sgpt version %s", version)
+		fmt.Printf("k8sgpt version %s", version)
 	},
 }
 

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/spf13/cobra v1.7.0
 	github.com/spf13/viper v1.15.0
 	github.com/stretchr/testify v1.8.2
+	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa
 	golang.org/x/term v0.7.0
 	k8s.io/api v0.26.3
 	k8s.io/apimachinery v0.26.3
@@ -36,6 +37,7 @@ require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/julienschmidt/httprouter v1.3.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.18 // indirect

go.sum

@@ -174,6 +174,8 @@ github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnr
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
+github.com/julienschmidt/httprouter v1.3.0 h1:U0609e9tgbseu3rBINet9P48AI/D3oJs4dN7jwJOQ1U=
+github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
 github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213/go.mod h1:vNUNkEQ1e29fT/6vq2aBdFsgNPmy8qMdSay1npru+Sw=
 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=
@@ -279,6 +281,7 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
+golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa h1:zuSxTR4o9y82ebqCUJYNGJbGPo6sKVl54f/TVDObg1c=
 golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=