Fixing oops of deletion of wwclient. I meant to delete old wwctl bits.

cmd/wwclient/wwclient.go

@@ -0,0 +1,103 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"net/http"
+	"os"
+	"os/exec"
+	"time"
+
+	"github.com/hpcng/warewulf/internal/pkg/config"
+)
+
+func main() {
+	if os.Args[0] == "/warewulf/bin/wwclient" {
+		os.Chdir("/")
+		log.Printf("Updating live file system LIVE, cancel now if this is in error")
+		time.Sleep(5000 * time.Millisecond)
+	} else {
+		fmt.Printf("Called via: %s\n", os.Args[0])
+		fmt.Printf("Runtime system-overlay is being put in '/warewulf/wwclient-test' rather than '/'\n")
+		os.MkdirAll("/warewulf/wwclient-test", 0755)
+		os.Chdir("/warewulf/wwclient-test")
+	}
+
+	config, err := config.New()
+	if err != nil {
+		fmt.Printf("ERROR: Could not load configuration file: %s\n", err)
+		return
+	}
+
+	localTCPAddr := net.TCPAddr{}
+	if config.InsecureRuntime == false {
+		// Setup local port to something privileged (<1024)
+		localTCPAddr.Port = 987
+	} else {
+		fmt.Printf("INFO: Running from an insecure port\n")
+	}
+
+	webclient := &http.Client{
+		Transport: &http.Transport{
+			Proxy: http.ProxyFromEnvironment,
+			DialContext: (&net.Dialer{
+				LocalAddr: &localTCPAddr,
+				Timeout:   30 * time.Second,
+				KeepAlive: 30 * time.Second,
+				DualStack: true,
+			}).DialContext,
+			MaxIdleConns:          100,
+			IdleConnTimeout:       90 * time.Second,
+			TLSHandshakeTimeout:   10 * time.Second,
+			ExpectContinueTimeout: 1 * time.Second,
+		},
+	}
+
+	for true {
+		var resp *http.Response
+		counter := 0
+
+		for true {
+			var err error
+
+			getString := fmt.Sprintf("http://%s:%d/overlay-runtime", config.Ipaddr, config.Port)
+			resp, err = webclient.Get(getString)
+			if err == nil {
+				break
+			} else {
+				if counter > 60 {
+					counter = 0
+				}
+				if counter == 0 {
+					log.Println(err)
+				}
+				counter++
+			}
+
+			time.Sleep(1000 * time.Millisecond)
+		}
+
+//		defer resp.Body.Close()
+
+
+
+
+		if resp.StatusCode != 200 {
+			log.Printf("Not updating runtime system-overlay, got status code: %d\n", resp.StatusCode)
+			time.Sleep(60000 * time.Millisecond)
+			continue
+		}
+
+
+		log.Printf("Updating runtime system\n")
+		command := exec.Command("/bin/cpio", "-iu")
+		command.Stdin = resp.Body
+		err := command.Run()
+		if err != nil {
+			log.Printf("ERROR: Failed running CPIO: %s\n", err)
+		}
+
+		time.Sleep(30000 * time.Millisecond)
+	}
+}