Initial rendering of the node tree

main.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	// Standard
+	"embed"
+	"flag"
+	"fmt"
+	"os"
+	"path"
+)
+
+const VERSION = "v1"
+
+var (
+	flagConfigFile string
+	flagVersion    bool
+	flagDev        bool
+	config         Config
+
+	//go:embed sql
+	sqlFS embed.FS
+
+	//go:embed views
+	viewFS embed.FS
+
+	//go:embed static
+	staticFS embed.FS
+)
+
+func initCmdline() {
+	confDir, err := os.UserConfigDir()
+	if err != nil {
+		logger.Error("application", "error", err)
+		os.Exit(1)
+	}
+	configFilename := path.Join(confDir, "datagraph.yaml")
+
+	flag.StringVar(&flagConfigFile, "config", configFilename, "Filename of configuration file")
+	flag.BoolVar(&flagVersion, "version", false, "Display version and exit")
+	flag.BoolVar(&flagDev, "dev", false, "Reload HTML templates from disk for every request")
+	flag.Parse()
+}
+func main() {
+	initLog()
+	initCmdline()
+
+	if flagVersion {
+		fmt.Println(VERSION)
+		os.Exit(0)
+	}
+
+	logger.Info("application", "version", VERSION)
+	readConfig()
+
+	err := initDB()
+	if err != nil {
+		logger.Error("database", "error", err)
+		os.Exit(1)
+	}
+
+	err = initWebserver()
+	if err != nil {
+		logger.Error("webserver", "error", err)
+		os.Exit(1)
+	}
+}