Phase 2/4 done, working on phase 3/5

cmd/uopi/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"embed"
 	"flag"
 	"fmt"
 	"io/fs"
@@ -10,11 +11,18 @@ import (
 	"os/signal"
 	"syscall"
 
+	"github.com/uopi/uopi/internal/broker"
 	"github.com/uopi/uopi/internal/config"
+	"github.com/uopi/uopi/internal/datasource/epics"
+	"github.com/uopi/uopi/internal/datasource/stub"
 	"github.com/uopi/uopi/internal/server"
 	"github.com/uopi/uopi/web"
 )
 
+// The web package's embed.go embeds web/dist at build time.
+// This blank import ensures the compiler includes the package.
+var _ embed.FS
+
 func main() {
 	configPath := flag.String("config", "", "path to TOML config file (optional)")
 	flag.Parse()
@@ -38,11 +46,34 @@ func main() {
 		os.Exit(1)
 	}
 
-	srv := server.New(cfg.Server.Listen, webFS, log)
-
 	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 	defer stop()
 
+	brk := broker.New(ctx, log)
+
+	// Register data sources
+	if cfg.Synthetic.Enabled {
+		ds := stub.New()
+		if err := ds.Connect(ctx); err != nil {
+			log.Error("stub connect", "err", err)
+			os.Exit(1)
+		}
+		brk.Register(ds)
+	}
+	// Register EPICS Channel Access data source (Phase 2).
+	// epics.Available() returns false when built without -tags epics so that
+	// machines without EPICS Base installed still compile and run correctly.
+	if cfg.EPICS.Enabled && epics.Available() {
+		ds := epics.New(cfg.EPICS.CAAddrList, cfg.EPICS.ArchiveURL)
+		if err := ds.Connect(ctx); err != nil {
+			log.Error("epics connect", "err", err)
+		} else {
+			brk.Register(ds)
+		}
+	}
+
+	srv := server.New(cfg.Server.Listen, webFS, brk, log)
+
 	if err := srv.Start(ctx); err != nil {
 		fmt.Fprintf(os.Stderr, "server error: %v\n", err)
 		os.Exit(1)