Added fetch command to interact with server

cmd/fetch.go

@@ -0,0 +1,54 @@
+//go:build client || all
+// +build client all
+
+package cmd
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/OpenCHAMI/configurator/internal/util"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var (
+	remoteHost string
+	remotePort int
+)
+
+var fetchCmd = &cobra.Command{
+	Use:   "fetch",
+	Short: "Fetch a config file from a remote instance of configurator",
+	Run: func(cmd *cobra.Command, args []string) {
+		// make sure a host is set
+		if remoteHost == "" {
+			logrus.Errorf("no '--host' argument set")
+			return
+		}
+		for _, target := range targets {
+
+			// make a request for each target
+			url := fmt.Sprintf("%s:%d/generate?target=%s", remoteHost, remotePort, target)
+			res, body, err := util.MakeRequest(url, http.MethodGet, nil, nil)
+			if err != nil {
+				logrus.Errorf("failed to make request: %v", err)
+				return
+			}
+			if res != nil {
+				if res.StatusCode == http.StatusOK {
+					fmt.Printf("%s\n", string(body))
+				}
+			}
+		}
+	},
+}
+
+func init() {
+	fetchCmd.Flags().StringVar(&remoteHost, "host", "", "set the remote configurator host")
+	fetchCmd.Flags().IntVar(&remotePort, "port", 3334, "set the remote configurator port")
+	fetchCmd.Flags().StringSliceVar(&targets, "target", nil, "set the target configs to make")
+	fetchCmd.Flags().StringVarP(&outputPath, "output", "o", "", "set the output path for config targets")
+
+	rootCmd.AddCommand(fetchCmd)
+}