cmd: add a osbuild-upload-pulp-ostree utility

Simple command line wrapper around the UploadAndDistributeCommit()
function.

cmd/osbuild-upload-pulp-ostree/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/osbuild/osbuild-composer/internal/upload/pulp"
+)
+
+func check(err error) {
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+}
+
+func readCredentials(credPath string) *pulp.Credentials {
+	fp, err := os.Open(credPath)
+	check(err)
+	data, err := io.ReadAll(fp)
+	check(err)
+	var creds pulp.Credentials
+	check(json.Unmarshal(data, &creds))
+	return &creds
+}
+
+func main() {
+	var filename, apiURL, repository, basePath, credsFile string
+	flag.StringVar(&filename, "archive", "", "ostree archive to upload")
+	flag.StringVar(&apiURL, "url", "", "server URL")
+	flag.StringVar(&repository, "repository", "", "repository name")
+	flag.StringVar(&basePath, "base-path", "", "base path for distribution (if the repository does not already exist)")
+	flag.StringVar(&credsFile, "credentials", "", `file containing credentials (format: {"username": "...", "password": "..."})`)
+	flag.Parse()
+
+	client := pulp.NewClient(apiURL, readCredentials(credsFile))
+
+	repoURL, err := client.UploadAndDistributeCommit(filename, repository, basePath)
+	check(err)
+	fmt.Printf("The commit will be available in the repository at %s\n", repoURL)
+}