# Features { #features }

## FastAPI features { #fastapi-features }

**FastAPI** gives you the following:

### Based on open standards { #based-on-open-standards }

* [**OpenAPI**](https://github.com/OAI/OpenAPI-Specification) for API creation, including declarations of <dfn title="also known as: endpoints, routes">path</dfn> <dfn title="also known as HTTP methods, as POST, GET, PUT, DELETE">operations</dfn>, parameters, request bodies, security, etc.

  }

  /**
   * Parses a bracketed host-port string, throwing IllegalArgumentException if parsing fails.
   *
   * @param hostPortString the full bracketed host-port specification. Port might not be specified.
   * @return an array with 2 strings: host and port, in that order.
   * @throws IllegalArgumentException if parsing the bracketed host-port string fails.
   */

///

## Standards-based benefits, alternative documentation { #standards-based-benefits-alternative-documentation }

And because the generated schema is from the [OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md) standard, there are many compatible tools.

   * {@code ExecutorService} imposes a small locking overhead on each task submission in order to
   * implement shutdown and termination behavior.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing

import org.slf4j.LoggerFactory;

import jcifs.CIFSContext;
import jcifs.internal.witness.WitnessRegistration.WitnessRegistrationState;

/**
 * SMB Witness Protocol client implementation as defined in MS-SWN specification.
 * Manages witness registrations, notifications, and heartbeats for cluster failover support.
 */
public class WitnessClient implements AutoCloseable {

# 기능 { #features }

## FastAPI의 기능 { #fastapi-features }

**FastAPI**는 다음과 같은 기능을 제공합니다:

### 개방형 표준을 기반으로 { #based-on-open-standards }

* [**OpenAPI**](https://github.com/OAI/OpenAPI-Specification): <dfn title="또한 다음으로도 불림: 엔드포인트, 라우트">경로</dfn> <dfn title="HTTP 메소드(POST, GET, PUT, DELETE 등)로도 알려짐">처리</dfn>, 매개변수, 요청 본문, 보안 등의 선언을 포함하여 API를 생성합니다.
* [**JSON Schema**](https://json-schema.org/)를 사용한 자동 데이터 모델 문서화(OpenAPI 자체가 JSON Schema를 기반으로 하기 때문입니다).

<img src="/img/tutorial/generate-clients/image07.png">

보시다시피, 이제 메서드 이름은 태그 다음에 함수 이름이 오며, URL 경로와 HTTP operation의 정보는 포함하지 않습니다.

### 클라이언트 생성기를 위한 OpenAPI 사양 전처리 { #preprocess-the-openapi-specification-for-the-client-generator }

생성된 코드에는 여전히 일부 **중복 정보**가 있습니다.

`ItemsService`(태그에서 가져옴)에 이미 **items**가 포함되어 있어 이 메서드가 items와 관련되어 있음을 알 수 있지만, 메서드 이름에도 태그 이름이 접두사로 붙어 있습니다. 😕

   *
   * <p><b>Warning:</b> when this method is used, the resulting map will use identity ({@code ==})
   * comparison to determine equality of keys, which is a technical violation of the {@link Map}
   * specification, and may not be what you expect.
   *
   * @throws IllegalStateException if the key strength was already set
   * @see WeakReference
   */
  @CanIgnoreReturnValue
  @GwtIncompatible // java.lang.ref.WeakReference

#### « Schéma » d’API { #api-schema }

Ici, [OpenAPI](https://github.com/OAI/OpenAPI-Specification) est une spécification qui dicte comment définir le schéma de votre API.

Cette définition de schéma inclut les chemins de votre API, les paramètres possibles qu’ils prennent, etc.

#### « Schéma » de données { #data-schema }

    }
    throw new NullPointerException("Both parameters are null");
  }

  /**
   * Creates an instance of {@link ToStringHelper}.
   *
   * <p>This is helpful for implementing {@link Object#toString()}. Specification by example:
   *
   * {@snippet :
   * // Returns "ClassName{}"
   * MoreObjects.toStringHelper(this)
   *     .toString();
   *
   * // Returns "ClassName{x=1}"
   * MoreObjects.toStringHelper(this)