Initial commit

Signed-off-by: Julien Riou <julien@riou.xyz>

src/cmd/collerd/main.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"flag"
+	"log/slog"
+	"os"
+
+	"git.riou.xyz/jriou/coller/internal"
+	"git.riou.xyz/jriou/coller/server"
+)
+
+var (
+	AppName    = "collerd"
+	AppVersion string
+	GoVersion  string
+	GitCommit  string
+)
+
+func handleMain() int {
+
+	var err error
+	config := server.NewConfig()
+
+	version := flag.Bool("version", false, "Print version and exit")
+	quiet := flag.Bool("quiet", false, "Log errors only")
+	verbose := flag.Bool("verbose", false, "Print more logs")
+	debug := flag.Bool("debug", false, "Print even more logs")
+	configFileName := flag.String("config", "", "Configuration file name")
+
+	flag.Parse()
+
+	if *version {
+		internal.ShowVersion(AppName, AppVersion, GitCommit, GoVersion)
+		return internal.RC_OK
+	}
+
+	var level slog.Level
+	if *debug {
+		level = slog.LevelDebug
+	}
+	if *verbose {
+		level = slog.LevelInfo
+	}
+	if *quiet {
+		level = slog.LevelError
+	}
+	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: level}))
+
+	if *configFileName != "" {
+		err = internal.ReadConfig(*configFileName, config)
+		if err != nil {
+			slog.Error("cannot parse configuration file", slog.Any("error", err))
+			return internal.RC_ERROR
+		}
+		logger.Debug("configuration file parsed", slog.Any("file", *configFileName))
+	}
+
+	if err = config.Check(); err != nil {
+		logger.Error("invalid configuration", slog.Any("error", err))
+		return internal.RC_ERROR
+	}
+
+	db, err := server.NewDatabase(logger, config)
+	if err != nil {
+		slog.Error("could not connect to the database", slog.Any("error", err))
+		return internal.RC_ERROR
+	}
+
+	srv, err := server.NewServer(logger, db, config, AppVersion)
+	if err != nil {
+		logger.Error("could not create server", slog.Any("error", err))
+		return internal.RC_ERROR
+	}
+
+	srv.SetIDLength(config.IDLength)
+	srv.SetPasswordLength(config.PasswordLength)
+
+	err = srv.Start()
+	if err != nil {
+		logger.Error("could not start server", slog.Any("error", err))
+		return internal.RC_ERROR
+	}
+
+	return internal.RC_OK
+}
+
+func main() {
+	os.Exit(handleMain())
+}