add flags and output to tusd cli

tusd/main.go

@@ -1,34 +1,59 @@
 package main
 
 import (
+	"flag"
 	"github.com/tus/tusd"
 	"github.com/tus/tusd/filestore"
+	"log"
 	"net/http"
 	"os"
 )
 
+var httpHost string
+var httpPort string
+var maxSize int64
+var dir string
+
+var stdout = log.New(os.Stdout, "[tusd] ", 0)
+var stderr = log.New(os.Stderr, "[tusd] ", 0)
+
+func init() {
+	flag.StringVar(&httpHost, "host", "0.0.0.0", "Host to bind HTTP server to")
+	flag.StringVar(&httpPort, "port", "1080", "Port to bind HTTP server to")
+	flag.Int64Var(&maxSize, "max-size", 0, "Maximum size of uploads in bytes")
+	flag.StringVar(&dir, "dir", "./data", "Directory to store uploads in")
+
+	flag.Parse()
+}
+
 func main() {
 
-	if err := os.MkdirAll("./data/", os.FileMode(0775)); err != nil {
-		panic(err)
+	stdout.Printf("Using '%s' as directory storage.\n", dir)
+	if err := os.MkdirAll(dir, os.FileMode(0775)); err != nil {
+		stderr.Fatalf("Unable to ensure directory exists: %s", err)
 	}
 
 	store := filestore.FileStore{
-		Path: "./data/",
+		Path: dir,
 	}
 
+	stdout.Printf("Using %.2fMB as maximum size.\n", float64(maxSize)/1024/1024)
+
 	handler, err := tusd.NewHandler(tusd.Config{
-		MaxSize:   1024 * 1024 * 1024,
+		MaxSize:   maxSize,
 		BasePath:  "files/",
 		DataStore: store,
 	})
 	if err != nil {
-		panic(err)
+		stderr.Fatalf("Unable to create handler: %s", err)
 	}
 
+	address := httpHost + ":" + httpPort
+	stdout.Printf("Using %s as address to listen.\n", address)
+
 	http.Handle("/files/", http.StripPrefix("/files/", handler))
-	err = http.ListenAndServe(":1080", nil)
+	err = http.ListenAndServe(address, nil)
 	if err != nil {
-		panic(err)
+		stderr.Fatalf("Unable to listen: %s", err)
 	}
 }