## `bump-pydantic` { #bump-pydantic }

In vielen Fällen, wenn Sie reguläre Pydantic-Modelle ohne Anpassungen verwenden, können Sie den Großteil des Prozesses der Migration von Pydantic v1 auf Pydantic v2 automatisieren.

Sie können [`bump-pydantic`](https://github.com/pydantic/bump-pydantic) vom selben Pydantic-Team verwenden.

In particular, this may be a good alternative to logic in a middleware.

For example, if you want to read or manipulate the request body before it is processed by your application.

/// danger

This is an "advanced" feature.

If you are just starting with **FastAPI** you might want to skip this section.

///

## Use cases { #use-cases }

        br = new BufferedReader(new InputStreamReader(is, charset));
    }

    /**
     * Runs the thread to continuously read lines from the input stream.
     * Each line is processed by the output callback (if provided) and added to the buffer.
     * The buffer is maintained as a circular buffer with the specified size.
     */
    @Override
    public void run() {
        boolean running = true;
        while (running) {

        final Builder builder = Settings.builder()
                .putList("http.hosts", hosts)
                .put("processors", fessConfig.getCrawlerHttpProcessors())
                .put("http.heartbeat_interval", fessConfig.getFesenHeartbeatInterval());
        final String username = fessConfig.getFesenUsername();

- fake X: фальшивий X
- item: предмет
- lock: блокування
- middleware: проміжне програмне забезпечення
- mounting: монтування
- origin: джерело
- override: переписування
- payload: корисне навантаження
- processor: процесор
- property: властивість
- proxy: представник
- pull request: запит на витяг
- random-access memory: пам'ять з довільним доступом
- status code: код статусу
- string: строка
- tag: мітка

errors.login.failure = Falha no login.
errors.app.illegal.transition = Transição ilegal. Por favor, tente novamente.
errors.app.db.already.deleted = Pode ter sido excluído por outro processo. Por favor, tente novamente.
errors.app.db.already.updated = Pode ter sido atualizado por outro processo. Por favor, tente novamente.
errors.app.db.already.exists = Os dados já existem. Por favor, tente novamente.

   * file. For discussion, see AbstractFutureState.
   */

  // Lazily initialized the first time we see an exception; not released until all the input futures
  // have completed and we have processed them all.
  volatile @Nullable Set<Throwable> seenExceptionsField = null;

  volatile int remainingField;

  private static final AtomicHelper ATOMIC_HELPER;

        // Then - Session should be in consistent state
        // The double-check pattern should prevent inconsistent cleanup
        assertTrue(releaseCount.get() > 0 || acquireCount.get() > 0, "Release and acquire counts should be processed");
    }

    /**
     * Test that trees collection is properly cleared during cleanup.
     */
    @Test
    public void testTreesCollectionCleanup() {
        // Given

        byte[] byteData = buffer.array();

        // Call the method
        int bytesRead = response.readBytesWireFormat(byteData, 0);

        // Assertions
        // readBytesWireFormat returns bytes processed up to null terminator
        assertEquals(14, bytesRead); // 8 bytes key + 6 bytes domain name
        assertArrayEquals(encryptionKey, serverData.encryptionKey);
        assertEquals("DOMAIN", serverData.oemDomainName);

Esta é a ideia básica. Mas você provavelmente vai querer cuidar de algumas coisas adicionais, como:

* Segurança - HTTPS
* Executando na inicialização
* Reinicializações
* Replicação (o número de processos em execução)
* Memória
* Passos anteriores antes de começar