Files
openshift-mcp-server/pkg/kubernetes-mcp-server/cmd/root.go
2025-04-10 13:36:08 +02:00

93 lines
2.6 KiB
Go

package cmd
import (
"errors"
"flag"
"fmt"
"github.com/manusa/kubernetes-mcp-server/pkg/mcp"
"github.com/manusa/kubernetes-mcp-server/pkg/version"
"github.com/mark3labs/mcp-go/server"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"golang.org/x/net/context"
"k8s.io/klog/v2"
"k8s.io/klog/v2/textlogger"
"os"
"strconv"
)
var rootCmd = &cobra.Command{
Use: "kubernetes-mcp-server [command] [options]",
Short: "Kubernetes Model Context Protocol (MCP) server",
Long: `
Kubernetes Model Context Protocol (MCP) server
# show this help
kubernetes-mcp-server -h
# shows version information
kubernetes-mcp-server --version
# start STDIO server
kubernetes-mcp-server
# start a SSE server on port 8080
kubernetes-mcp-server --sse-port 8080
# start a SSE server on port 8443 with a public HTTPS host of example.com
kubernetes-mcp-server --sse-port 8443 --sse-base-url https://example.com:8443
# TODO: add more examples`,
Run: func(cmd *cobra.Command, args []string) {
initLogging()
klog.V(5).Infof("Starting kubernetes-mcp-server")
if viper.GetBool("version") {
fmt.Println(version.Version)
return
}
mcpServer, err := mcp.NewSever()
if err != nil {
panic(err)
}
defer mcpServer.Close()
var sseServer *server.SSEServer
if ssePort := viper.GetInt("sse-port"); ssePort > 0 {
sseServer = mcpServer.ServeSse(viper.GetString("sse-base-url"))
defer func() { _ = sseServer.Shutdown(cmd.Context()) }()
klog.V(0).Infof("SSE server starting on port %d", ssePort)
if err := sseServer.Start(fmt.Sprintf(":%d", ssePort)); err != nil {
klog.Errorf("Failed to start SSE server: %s", err)
return
}
}
if err := mcpServer.ServeStdio(); err != nil && !errors.Is(err, context.Canceled) {
panic(err)
}
},
}
func init() {
rootCmd.Flags().BoolP("version", "v", false, "Print version information and quit")
rootCmd.Flags().IntP("log-level", "", 0, "Set the log level (from 0 to 9)")
rootCmd.Flags().IntP("sse-port", "", 0, "Start a SSE server on the specified port")
rootCmd.Flags().StringP("sse-base-url", "", "", "SSE public base URL to use when sending the endpoint message (e.g. https://example.com)")
_ = viper.BindPFlags(rootCmd.Flags())
}
func Execute() {
if err := rootCmd.Execute(); err != nil {
panic(err)
}
}
func initLogging() {
logger := textlogger.NewLogger(textlogger.NewConfig(textlogger.Output(os.Stdout)))
klog.SetLoggerWithOptions(logger)
flagSet := flag.NewFlagSet("kubernetes-mcp-server", flag.ContinueOnError)
klog.InitFlags(flagSet)
if logLevel := viper.GetInt("log-level"); logLevel >= 0 {
_ = flagSet.Parse([]string{"--v", strconv.Itoa(logLevel)})
}
}