feat: first version of serve

Signed-off-by: Thomas Schuetz <thomas.schuetz@t-sc.eu>

cmd/root.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"github.com/k8sgpt-ai/k8sgpt/cmd/serve"
 	"os"
 	"path/filepath"
 
@@ -53,6 +54,7 @@ func init() {
 	rootCmd.AddCommand(filters.FiltersCmd)
 	rootCmd.AddCommand(generate.GenerateCmd)
 	rootCmd.AddCommand(integration.IntegrationCmd)
+	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.")

cmd/serve/serve.go

@@ -0,0 +1,60 @@
+package serve
+
+import (
+	"fmt"
+	"github.com/fatih/color"
+	server2 "github.com/k8sgpt-ai/k8sgpt/pkg/server"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"os"
+)
+
+var (
+	port    string
+	backend string
+	token   string
+)
+
+var ServeCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "Runs k8sgpt as a server",
+	Long:  `Runs k8sgpt as a server to allow for easy integration with other applications.`,
+	Run: func(cmd *cobra.Command, args []string) {
+
+		backendType := viper.GetString("backend_type")
+		if backendType == "" {
+			color.Red("No backend set. Please run k8sgpt auth")
+			os.Exit(1)
+		}
+
+		if backend != "" {
+			backendType = backend
+		}
+
+		token := viper.GetString(fmt.Sprintf("%s_key", backendType))
+		// check if nil
+		if token == "" {
+			color.Red("No %s key set. Please run k8sgpt auth", backendType)
+			os.Exit(1)
+		}
+
+		server := server2.K8sGPTServer{
+			Backend: backend,
+			Port:    port,
+			Token:   token,
+		}
+
+		err := server.Serve()
+		if err != nil {
+			color.Red("Error: %v", err)
+			os.Exit(1)
+		}
+		// override the default backend if a flag is provided
+	},
+}
+
+func init() {
+	// add flag for backend
+	ServeCmd.Flags().StringVarP(&port, "port", "p", "8080", "Port to run the server on")
+	ServeCmd.Flags().StringVarP(&backend, "backend", "b", "openai", "Backend AI provider")
+}

pkg/server/main.go

@@ -0,0 +1,118 @@
+package server
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/fatih/color"
+	"github.com/k8sgpt-ai/k8sgpt/pkg/ai"
+	"github.com/k8sgpt-ai/k8sgpt/pkg/analyzer"
+	"github.com/k8sgpt-ai/k8sgpt/pkg/kubernetes"
+	"github.com/schollz/progressbar/v3"
+	"github.com/spf13/viper"
+	"net/http"
+	"os"
+	"strings"
+)
+
+type K8sGPTServer struct {
+	Port    string
+	Backend string
+	Key     string
+	Token   string
+}
+
+type Result struct {
+	Analysis []analyzer.Analysis `json:"analysis"`
+}
+
+func (s *K8sGPTServer) analyzeHandler(w http.ResponseWriter, r *http.Request) {
+	namespace := r.URL.Query().Get("namespace")
+	ex := r.URL.Query().Get("explain")
+
+	explain := false
+
+	if ex == "true" {
+		explain = true
+	}
+
+	output := Result{}
+
+	var aiClient ai.IAI
+	switch s.Backend {
+	case "openai":
+		aiClient = &ai.OpenAIClient{}
+		if err := aiClient.Configure(s.Token, "english"); err != nil {
+			color.Red("Error: %v", err)
+			os.Exit(1)
+		}
+	default:
+		color.Red("Backend not supported")
+		os.Exit(1)
+	}
+
+	ctx := context.Background()
+	// Get kubernetes client from viper
+	client := viper.Get("kubernetesClient").(*kubernetes.Client)
+	// Analysis configuration
+	config := &analyzer.AnalysisConfiguration{
+		Namespace: namespace,
+		Explain:   explain,
+	}
+
+	var analysisResults *[]analyzer.Analysis = &[]analyzer.Analysis{}
+	if err := analyzer.RunAnalysis(ctx, []string{}, config, client,
+		aiClient, analysisResults); err != nil {
+		color.Red("Error: %v", err)
+	}
+
+	fmt.Println(analysisResults)
+	if len(*analysisResults) == 0 {
+		fmt.Fprintf(w, "{ \"status\": \"OK\" }")
+	}
+
+	var bar = progressbar.Default(int64(len(*analysisResults)))
+	if !explain {
+		bar.Clear()
+	}
+	var printOutput []analyzer.Analysis
+
+	for _, analysis := range *analysisResults {
+
+		if explain {
+			parsedText, err := analyzer.ParseViaAI(ctx, config, aiClient, analysis.Error)
+			if err != nil {
+				// Check for exhaustion
+				if strings.Contains(err.Error(), "status code: 429") {
+					fmt.Fprintf(w, "Exhausted API quota. Please try again later")
+					os.Exit(1)
+				}
+				color.Red("Error: %v", err)
+				continue
+			}
+			analysis.Details = parsedText
+			bar.Add(1)
+		}
+		printOutput = append(printOutput, analysis)
+
+		analysis.Error = analysis.Error[0:]
+		output.Analysis = append(output.Analysis, analysis)
+	}
+	j, err := json.MarshalIndent(output, "", "  ")
+	if err != nil {
+		color.Red("Error: %v", err)
+		os.Exit(1)
+	}
+	fmt.Fprintf(w, "%s", j)
+
+}
+
+func (s *K8sGPTServer) Serve() error {
+	http.HandleFunc("/analyze", s.analyzeHandler)
+	err := http.ListenAndServe(":"+s.Port, nil)
+	if err != nil {
+		fmt.Printf("error starting server: %s\n", err)
+		return err
+	}
+	return nil
+}