# Simple OAuth2 con Password y Bearer { #simple-oauth2-with-password-and-bearer }

Ahora vamos a construir a partir del capítulo anterior y agregar las partes faltantes para tener un flujo de seguridad completo.

## Obtener el `username` y `password` { #get-the-username-and-password }

Vamos a usar las utilidades de seguridad de **FastAPI** para obtener el `username` y `password`.

# Simples OAuth2 com senha e Bearer { #simple-oauth2-with-password-and-bearer }

Agora vamos construir a partir do capítulo anterior e adicionar as partes que faltam para ter um fluxo de segurança completo.

## Obtenha o `username` e a `password` { #get-the-username-and-password }

É utilizado o utils de segurança da **FastAPI** para obter o `username` e a `password`.

Ian Lance Taylor <******@****.***> 1765577893 -0800

    fields `username` and `password`.

    All the initialization parameters are extracted from the request.

    Read more about it in the
    [FastAPI docs for Simple OAuth2 with Password and Bearer](https://fastapi.tiangolo.com/tutorial/security/simple-oauth2/).

    ## Example

    ```python
    from typing import Annotated

    from fastapi import Depends, FastAPI

        if (stopwordsItemList == null) {
            reload(null);
        }

        if (offset >= stopwordsItemList.size() || offset < 0) {
            return new PagingList<>(Collections.<StopwordsItem> emptyList(), offset, size, stopwordsItemList.size());
        }

        int toIndex = offset + size;
        if (toIndex > stopwordsItemList.size()) {

        assertNotNull(dataMap);
        assertEquals(3, dataMap.size());
        assertEquals("Test Title", dataMap.get("title"));
        assertEquals("Test Content", dataMap.get("content"));
        assertTrue(dataMap.get("tags") instanceof List);
        @SuppressWarnings("unchecked")
        List<String> tags = (List<String>) dataMap.get("tags");
        assertEquals(2, tags.size());
    }

```
Client #1596980209979 left the chat
```

/// tip

The app above is a minimal and simple example to demonstrate how to handle and broadcast messages to several WebSocket connections.

But keep in mind that, as everything is handled in memory, in a single list, it will only work while the process is running, and will only work with a single process.

# Bigger Applications - Multiple Files { #bigger-applications-multiple-files }

If you are building an application or a web API, it's rarely the case that you can put everything in a single file.

**FastAPI** provides a convenience tool to structure your application while keeping all the flexibility.

/// info

If you come from Flask, this would be the equivalent of Flask's Blueprints.

///

## An example file structure { #an-example-file-structure }

        CacheBuilder.newBuilder().concurrencyLevel(1).maximumSize(MAX_SIZE).build(loader);
    for (int i = 0; i < 2 * MAX_SIZE; i++) {
      cache.getUnchecked(i);
      assertThat(cache.size()).isEqualTo(min(i + 1, MAX_SIZE));
    }

    assertThat(cache.size()).isEqualTo(MAX_SIZE);
    CacheTesting.checkValidState(cache);
  }

  public void testEviction_maxWeightOneSegment() {
    IdentityLoader<Integer> loader = identityLoader();

        assertNotNull(emptyKeywords);
        assertEquals(0, emptyKeywords.length);

        // Test single word query
        String[] singleKeyword = SuggestUtil.parseQuery("single", field);
        assertNotNull(singleKeyword);
        assertEquals(1, singleKeyword.length);
        assertEquals("single", singleKeyword[0]);
    }

    @Test
    public void testParseQueryWithTooManyTerms() {