feat: initial public version

cmd/main.go

@@ -0,0 +1,64 @@
+// Codapi safely executes code snippets using sandboxes.
+package main
+
+import (
+	"flag"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/nalgeon/codapi/config"
+	"github.com/nalgeon/codapi/logx"
+	"github.com/nalgeon/codapi/sandbox"
+	"github.com/nalgeon/codapi/server"
+)
+
+var Version string = "main"
+
+// startServer starts the HTTP API sandbox server.
+func startServer(port int) *server.Server {
+	logx.Log("codapi %s", Version)
+	logx.Log("listening on port %d...", port)
+	router := server.NewRouter()
+	srv := server.NewServer(port, router)
+	srv.Start()
+	return srv
+}
+
+// listenSignals listens for termination signals
+// and performs graceful shutdown.
+func listenSignals(srv *server.Server) {
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+	<-sigs
+	logx.Log("stopping...")
+	err := srv.Stop()
+	if err != nil {
+		logx.Log("failed to stop: %v", err)
+	}
+}
+
+func main() {
+	port := flag.Int("port", 1313, "server port")
+	flag.Parse()
+
+	cfg, err := config.Read("config.json", "boxes.json", "commands.json")
+	if err != nil {
+		logx.Log("missing config file")
+		os.Exit(1)
+	}
+
+	err = sandbox.ApplyConfig(cfg)
+	if err != nil {
+		logx.Log("invalid config: %v", err)
+		os.Exit(1)
+	}
+
+	srv := startServer(*port)
+	logx.Verbose = cfg.Verbose
+	logx.Log("workers: %d", cfg.PoolSize)
+	logx.Log("boxes: %v", cfg.BoxNames())
+	logx.Log("commands: %v", cfg.CommandNames())
+
+	listenSignals(srv)
+}