go-app/pkg/app/app_init.go

package app

import (
	"context"

	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/codes"

	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/otel"
	srvgrpc "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/grpc"
	grpcopts "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/grpc/opts"
	srvhttp "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http"
)

func (a *App) initGRPC(ctx context.Context) error {
	ctx, span := a.tracer.Start(ctx, "init.grpc")
	defer span.End()

	shutdown, doneChan, err := srvgrpc.InitGRPCServer(ctx,
		&grpcopts.GRPCOpts{
			GRPCConfig: a.cfg.GRPC,
			AppGRPC:    a.GRPC,
		})
	if err != nil {
		span.RecordError(err)
		span.SetStatus(codes.Error, err.Error())
		return err
	}

	a.shutdownFuncs = append(a.shutdownFuncs, shutdown)
	a.GRPC.GRPCDone = doneChan

	span.SetStatus(codes.Ok, "")
	return nil
}

func (a *App) initHTTP(ctx context.Context) error {
	var err error
	var httpShutdown shutdownFunc

	_, span := a.tracer.Start(ctx, "init.http")
	defer span.End()

	span.SetAttributes(
		attribute.Int("numHTTPFuncs", len(a.HTTP.Funcs)),
		attribute.Int("numHTTPMiddlewares", len(a.HTTP.Middleware)),
		attribute.Int("numHTTPHealthChecks", len(a.HTTP.HealthChecks)),
	)

	a.HTTP.Ctx = a.AppContext
	httpShutdown, a.HTTP.HTTPDone, err = srvhttp.InitHTTPServer(a.HTTP)

	a.shutdownFuncs = append(a.shutdownFuncs, httpShutdown)

	if err != nil {
		span.RecordError(err)
		span.SetStatus(codes.Error, err.Error())
	} else {
		span.SetStatus(codes.Ok, "")
	}

	return err
}

func (a *App) initOTEL() {
	var otelShutdown shutdownFunc
	a.AppContext, otelShutdown = otel.Init(a.AppContext)
	a.shutdownFuncs = append(a.shutdownFuncs, otelShutdown)
	a.tracer = otel.MustTracerFromCtx(a.AppContext)
}