add users logic

users/cmd/userservice/main.go

@@ -0,0 +1,68 @@
+// Command userservice runs the SciMesh authentication service: it registers
+// users, verifies logins, and issues the HS256 JWTs the coordinator trusts.
+package main
+
+import (
+	"context"
+	"fmt"
+	nethttp "net/http"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/emil28092005/SciMesh/users/internal/auth"
+	"github.com/emil28092005/SciMesh/users/internal/infra"
+	"github.com/emil28092005/SciMesh/users/internal/storage/postgres"
+	apihttp "github.com/emil28092005/SciMesh/users/internal/transport/http"
+	"github.com/emil28092005/SciMesh/users/internal/usecase"
+)
+
+func main() {
+	if err := run(); err != nil {
+		fmt.Fprintln(os.Stderr, "fatal:", err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	// Cancelled on SIGINT/SIGTERM so the HTTP server drains in-flight requests
+	// instead of dropping them.
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	cfg, err := infra.LoadConfig()
+	if err != nil {
+		return err
+	}
+
+	log, closer, err := infra.NewLogger(cfg)
+	if err != nil {
+		return err
+	}
+	defer func() { _ = closer.Close() }()
+
+	pool, err := infra.NewPool(ctx, cfg, log)
+	if err != nil {
+		return err
+	}
+	defer pool.Close()
+
+	// Adapters implementing the usecase ports.
+	users := postgres.NewUserRepo(pool)
+	hasher := auth.NewHasher(cfg.BcryptCost)
+	clock := infra.NewClock()
+	issuer := auth.NewIssuer(cfg.JWTSecret, cfg.TokenTTL, clock.Now)
+
+	uc := apihttp.UseCases{
+		Register: usecase.NewRegister(users, hasher, clock),
+		Login:    usecase.NewLogin(users, hasher, issuer),
+		Users:    users,
+	}
+
+	handler := apihttp.NewServer(log, uc, issuer)
+	// A blanket per-request deadline: bcrypt is bounded, so anything slower is a
+	// stuck handler we want to shed rather than hold a connection open.
+	handler = nethttp.TimeoutHandler(handler, cfg.RequestTimeout, `{"error":"request timeout"}`)
+
+	return infra.RunServer(ctx, log, cfg.Addr, handler)
+}