X-Git-Url: https://git.r.bdr.sh/rbdr/mobius/blobdiff_plain/b196a50a44a5c72fc43df39fce4407d05ec8863b..46acf0721f9bcd5304d0a0fbc10ebe544786d157:/cmd/mobius-hotline-server/main.go

diff --git a/cmd/mobius-hotline-server/main.go b/cmd/mobius-hotline-server/main.go
index 60327a8..8407449 100644
--- a/cmd/mobius-hotline-server/main.go
+++ b/cmd/mobius-hotline-server/main.go
@@ -2,17 +2,26 @@ package main
 
 import (
 	"context"
+	"embed"
+	"encoding/json"
 	"flag"
 	"fmt"
 	"github.com/jhalter/mobius/hotline"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
+	"io"
+	"log"
 	"math/rand"
+	"net/http"
 	"os"
+	"path/filepath"
 	"runtime"
 	"time"
 )
 
+//go:embed mobius/config
+var cfgTemplate embed.FS
+
 const (
 	defaultPort = 5500
 )
@@ -20,12 +29,30 @@ const (
 func main() {
 	rand.Seed(time.Now().UnixNano())
 
-	ctx, cancelRoot := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(context.Background())
+
+	// TODO: implement graceful shutdown by closing context
+	// c := make(chan os.Signal, 1)
+	// signal.Notify(c, os.Interrupt)
+	// defer func() {
+	// 	signal.Stop(c)
+	// 	cancel()
+	// }()
+	// go func() {
+	// 	select {
+	// 	case <-c:
+	// 		cancel()
+	// 	case <-ctx.Done():
+	// 	}
+	// }()
 
 	basePort := flag.Int("bind", defaultPort, "Bind address and port")
+	statsPort := flag.String("stats-port", "", "Enable stats HTTP endpoint on address and port")
 	configDir := flag.String("config", defaultConfigPath(), "Path to config root")
 	version := flag.Bool("version", false, "print version and exit")
 	logLevel := flag.String("log-level", "info", "Log level")
+	init := flag.Bool("init", false, "Populate the config dir with default configuration")
+
 	flag.Parse()
 
 	if *version {
@@ -44,17 +71,59 @@ func main() {
 	defer func() { _ = l.Sync() }()
 	logger := l.Sugar()
 
+	if *init {
+		if _, err := os.Stat(filepath.Join(*configDir, "/config.yaml")); os.IsNotExist(err) {
+			if err := os.MkdirAll(*configDir, 0750); err != nil {
+				logger.Fatal(err)
+			}
+
+			if err := copyDir("mobius/config", *configDir); err != nil {
+				logger.Fatal(err)
+			}
+			logger.Infow("Config dir initialized at " + *configDir)
+
+		} else {
+			logger.Infow("Existing config dir found.  Skipping initialization.")
+		}
+	}
+
 	if _, err := os.Stat(*configDir); os.IsNotExist(err) {
-		logger.Fatalw("Configuration directory not found", "path", configDir)
+		logger.Fatalw("Configuration directory not found.  Correct the path or re-run with -init to generate initial config.", "path", configDir)
 	}
 
-	srv, err := hotline.NewServer(*configDir, "", *basePort, logger, &hotline.OSFileStore{})
+	srv, err := hotline.NewServer(*configDir, *basePort, logger, &hotline.OSFileStore{})
 	if err != nil {
 		logger.Fatal(err)
 	}
 
+	sh := statHandler{hlServer: srv}
+	if *statsPort != "" {
+		http.HandleFunc("/", sh.RenderStats)
+
+		go func(srv *hotline.Server) {
+			// Use the default DefaultServeMux.
+			err = http.ListenAndServe(":"+*statsPort, nil)
+			if err != nil {
+				log.Fatal(err)
+			}
+		}(srv)
+	}
+
 	// Serve Hotline requests until program exit
-	logger.Fatal(srv.ListenAndServe(ctx, cancelRoot))
+	logger.Fatal(srv.ListenAndServe(ctx, cancel))
+}
+
+type statHandler struct {
+	hlServer *hotline.Server
+}
+
+func (sh *statHandler) RenderStats(w http.ResponseWriter, _ *http.Request) {
+	u, err := json.Marshal(sh.hlServer.CurrentStats())
+	if err != nil {
+		panic(err)
+	}
+
+	_, _ = io.WriteString(w, string(u))
 }
 
 func newStdoutCore(level zapcore.Level) zapcore.Core {
@@ -79,7 +148,7 @@ var zapLogLevel = map[string]zapcore.Level{
 func defaultConfigPath() (cfgPath string) {
 	switch runtime.GOOS {
 	case "windows":
-		cfgPath = "config"
+		cfgPath = "config/"
 	case "darwin":
 		if _, err := os.Stat("/usr/local/var/mobius/config/"); err == nil {
 			cfgPath = "/usr/local/var/mobius/config/"
@@ -94,3 +163,53 @@ func defaultConfigPath() (cfgPath string) {
 
 	return cfgPath
 }
+
+// TODO: Simplify this mess.  Why is it so difficult to recursively copy a directory?
+func copyDir(src, dst string) error {
+	entries, err := cfgTemplate.ReadDir(src)
+	if err != nil {
+		return err
+	}
+	for _, dirEntry := range entries {
+		if dirEntry.IsDir() {
+			if err := os.MkdirAll(filepath.Join(dst, dirEntry.Name()), 0777); err != nil {
+				panic(err)
+			}
+			subdirEntries, _ := cfgTemplate.ReadDir(filepath.Join(src, dirEntry.Name()))
+			for _, subDirEntry := range subdirEntries {
+				f, err := os.Create(filepath.Join(dst, dirEntry.Name(), subDirEntry.Name()))
+				if err != nil {
+					return err
+				}
+
+				srcFile, err := cfgTemplate.Open(filepath.Join(src, dirEntry.Name(), subDirEntry.Name()))
+				if err != nil {
+					return err
+				}
+				_, err = io.Copy(f, srcFile)
+				if err != nil {
+					return err
+				}
+				f.Close()
+			}
+		} else {
+			f, err := os.Create(filepath.Join(dst, dirEntry.Name()))
+			if err != nil {
+				return err
+			}
+
+			srcFile, err := cfgTemplate.Open(filepath.Join(src, dirEntry.Name()))
+			if err != nil {
+				return err
+			}
+			_, err = io.Copy(f, srcFile)
+			if err != nil {
+				return err
+			}
+			f.Close()
+		}
+
+	}
+
+	return nil
+}