Initial commit

cmd/backer/main.go

@@ -0,0 +1,76 @@
+// Package main implements minimal wrapper to run backer as go application.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+	"runtime"
+
+	"backer/internal/backer"
+	"backer/internal/log"
+
+	"github.com/pkg/errors"
+)
+
+var (
+	// Version is set at build time via ldflags.
+	version = "dev"
+)
+
+func main() {
+	configPath := flag.String("c", "", "path to config file (default: OS-specific location)")
+	showVersion := flag.Bool("version", false, "show version and exit")
+
+	flag.Parse()
+
+	if *showVersion {
+		fmt.Printf("backer %s\n", version)
+
+		os.Exit(0)
+	}
+
+	cfgPath := *configPath
+	if cfgPath == "" {
+		cfgPath = defaultConfigPath()
+	}
+
+	server, err := backer.NewServer(cfgPath)
+
+	if err != nil {
+		log.Fatalf("Failed to create server: %v", errors.WithStack(err))
+	}
+
+	log.Infof("Starting server at %s", server.Addr)
+
+	if backer.C.NoHTTPS {
+		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("Failed to start server: %v", errors.WithStack(err))
+		}
+	} else {
+		if _, err := os.Stat(backer.C.Cert); err != nil {
+			log.Fatalf("Certificate file error: %v", err)
+		}
+
+		if _, err := os.Stat(backer.C.Key); err != nil {
+			log.Fatalf("Certificate key file error: %v", err)
+		}
+
+		if err := server.ListenAndServeTLS(backer.C.Cert, backer.C.Key); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("Failed to start server: %v", errors.WithStack(err))
+		}
+	}
+}
+
+// defaultConfigPath returns the default config file path based on the OS.
+func defaultConfigPath() string {
+	switch runtime.GOOS {
+	case "freebsd", "netbsd", "openbsd", "dragonfly":
+		return "/usr/local/etc/backer.json"
+	default: // Linux, macOS, and others.
+		return "/etc/backer.json"
+	}
+}
+
+/* vim: setlocal ft=go noet ai ts=4 sw=4 sts=4: */