*
   * @throws IllegalStateException if the service is not {@link State#STARTING}.
   */
  protected final void notifyStarted() {
    monitor.enter();
    try {
      // We have to examine the internal state of the snapshot here to properly handle the stop
      // while starting case.
      if (snapshot.state != STARTING) {
        IllegalStateException failure =

            throws ProjectBuilderException, IllegalArgumentException {
        InternalMavenSession session = InternalMavenSession.from(request.getSession());
        RequestTraceHelper.ResolverTrace trace = RequestTraceHelper.enter(request.getSession(), request);
        try {
            List<ArtifactRepository> repositories = session.toArtifactRepositories(

        InternalSession.associate(session, iSession);

        SessionScope sessionScope = container.lookup(SessionScope.class);
        sessionScope.enter();
        sessionScope.seed(MavenSession.class, msession);
        sessionScope.seed(InternalMavenSession.class, iSession);
        sessionScope.seed(Session.class, iSession);
    }

Ancak bu örnekte, aynı **FastAPI** uygulaması hem API’yi hem de authentication’ı yönetecek.

O yüzden basitleştirilmiş bu bakış açısından üzerinden geçelim:

* Kullanıcı frontend’de `username` ve `password` yazar ve `Enter`’a basar.
* Frontend (kullanıcının browser’ında çalışır), bu `username` ve `password` değerlerini API’mizdeki belirli bir URL’ye gönderir (`tokenUrl="token"` ile tanımlanan).

    eventListener.canceled(this)
  }

  override fun isCanceled(): Boolean = canceled

  override fun execute(): Response {
    check(executed.compareAndSet(false, true)) { "Already Executed" }

    timeout.enter()
    callStart()
    try {
      client.dispatcher.executed(this)
      return getResponseWithInterceptorChain()
    } finally {
      client.dispatcher.finished(this)
    }
  }

Але в нашому випадку той самий застосунок **FastAPI** оброблятиме і API, і автентифікацію.

Тож розгляньмо це у спрощеному вигляді:

- Користувач вводить `username` і `password` у frontend і натискає `Enter`.
- Frontend (у браузері користувача) надсилає ці `username` і `password` на специфічну URL-адресу нашого API (оголошену як `tokenUrl="token"`).

  ASSERT_TRUE(GetFunctionDef(func_, &fdef));
  VerifyFDefInputs(fdef, M({{"feed1"}, {"feed2"}}));
  VerifyFDefOutputs(fdef, M({{"test_loop_exit"}}));
  VerifyFDefEdges(fdef,
                  {{"feed1", "test_loop/Enter:0"},
                   {"test_loop/Enter:output:0", "test_loop/Merge:0"},
                   {"test_loop/Merge:output:0", "test_loop/Switch:0"},
                   {"test_loop/Switch:output_false:0", "test_loop/Exit:0"},

Da wir eine relative URL verwenden, würde sich das, wenn sich Ihre API unter `https://example.com/` befindet, auf `https://example.com/token` beziehen. Wenn sich Ihre API jedoch unter `https://example.com/api/v1/` befände, würde es sich auf `https://example.com/api/v1/token` beziehen.

        InternalSession iSession = defaultSessionFactory.newSession(mSession);
        mSession.setSession(iSession);

        SessionScope sessionScope = getContainer().lookup(SessionScope.class);
        sessionScope.enter();
        sessionScope.seed(MavenSession.class, mSession);
        sessionScope.seed(Session.class, iSession);
        sessionScope.seed(InternalMavenSession.class, InternalMavenSession.from(iSession));
    }

<div class="termy">

```console
// Go to the home directory
$ cd
// Create a directory for all your code projects
$ mkdir code
// Enter into that code directory
$ cd code
// Create a directory for this project
$ mkdir awesome-project
// Enter into that project directory
$ cd awesome-project
```

</div>

## Virtual Environment Oluşturun { #create-a-virtual-environment }