Initial commit

main.go

@@ -0,0 +1,89 @@
+// This template contains a simple
+// app with OTEL bootstrap that will create an
+// HTTP server configured by environment that exports
+// spans and metrics to an OTEL collector if configured
+// to do so. Will also stand up a prometheus metrics
+// endpoint.
+//
+// Configuration and logger stored in context
+// Reference implementation of the provided packages
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+	"os/signal"
+
+	"github.com/rs/zerolog/log"
+	"golang.org/x/sys/unix"
+
+	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/app"
+	optsgrpc "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/grpc/opts"
+	optshttp "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http/opts"
+
+	"gitea.libretechconsulting.com/rmcguire/go-server-with-otel/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/go-server-with-otel/pkg/demogrpc"
+	"gitea.libretechconsulting.com/rmcguire/go-server-with-otel/pkg/demohttp"
+)
+
+var flagSchema bool
+
+func main() {
+	ctx, cncl := signal.NotifyContext(context.Background(), os.Interrupt, unix.SIGTERM)
+	defer cncl()
+
+	// Load configuration and setup logging. The go-app framework
+	// will handle loading config and environment into our demo
+	// app config struct which embeds app.AooConfig
+	ctx, demoApp := app.MustLoadConfigInto(ctx, &config.DemoConfig{})
+
+	// Print schema if that's all we have to do
+	if flagSchema {
+		printSchema()
+		os.Exit(1)
+	}
+
+	log.Debug().Any("demoAppMergedConfig", demoApp).Msg("demo app config prepared")
+
+	// Prepare servers
+	demoHTTP := demohttp.NewDemoHTTPServer(ctx, demoApp)
+	demoGRPC := demogrpc.NewDemoGRPCServer(ctx, demoApp)
+
+	// Prepare app
+	app := &app.App{
+		AppContext: ctx,
+		GRPC: &optsgrpc.AppGRPC{
+			Services:     demoGRPC.GetServices(),
+			GRPCDialOpts: demoGRPC.GetDialOpts(),
+		},
+		HTTP: &optshttp.AppHTTP{
+			Ctx:          ctx,
+			HealthChecks: demoHTTP.GetHealthCheckFuncs(),
+			Funcs:        demoHTTP.GetHandleFuncs(),
+		},
+	}
+
+	// Launch app
+	app.MustRun()
+
+	// Wait for app to complete
+	// Perform any extra shutdown here
+	<-app.Done()
+}
+
+// flag.Parse will be called by go-app
+func init() {
+	flag.BoolVar(&flagSchema, "schema", false, "generate json schema and exit")
+}
+
+func printSchema() {
+	bytes, err := app.CustomSchema(&config.DemoConfig{})
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println(string(bytes))
+	os.Exit(0)
+}