# Étendre OpenAPI { #extending-openapi }

Il existe des cas où vous pouvez avoir besoin de modifier le schéma OpenAPI généré.

Dans cette section, vous verrez comment faire.

## Le processus normal { #the-normal-process }

Le processus normal (par défaut) est le suivant.

Une application (instance) `FastAPI` a une méthode `.openapi()` censée retourner le schéma OpenAPI.

Cela signifie qu'au lieu du processus habituel où vos utilisateurs envoient des requêtes à votre API, c'est votre API (ou votre application) qui peut envoyer des requêtes vers leur système (vers leur API, leur application).

On appelle généralement cela un webhook.

## Étapes des webhooks { #webhooks-steps }

                    e.printStackTrace();
                }

                // despite all are back, we need to make sure all the events are processed (are async)
                // this one should block until all processed
                listener.transferSucceeded(new TransferEvent.Builder(session, resource)
                        .setType(TransferEvent.EventType.SUCCEEDED)
                        .build());

    /**
     * Artifact type name for a JAR file that can be placed either on the annotation processor class path
     * or module path. The path (classes or modules) is chosen by the plugin, possibly using heuristic rules.
     */
    String PROCESSOR = "processor";

    /**
     * Artifact type name for a JAR file to unconditionally place on the annotation processor class path.
     * If the JAR is modular, its module information are ignored.
     */

     * @return set of projects that have yet to be processed successfully by the build.
     */
    public Set<MavenProject> getUnfinishedProjects() {
        Set<MavenProject> unfinished = new HashSet<>(projectBuilds.getProjects());
        unfinished.removeAll(finishedProjects);
        return unfinished;
    }

    /**
     * @return set of projects that have been successfully processed by the build.
     */

            this.snippet = snippet;
        }

        /**
         * Gets the ViewHelper-processed URL for display.
         *
         * @return the URL link
         */
        public String getUrlLink() {
            return urlLink;
        }

        /**
         * Sets the ViewHelper-processed URL for display.
         *
         * @param urlLink the URL link
         */

      sink.flush()
    }
  }

  /**
   * Tell the peer to stop creating streams and that we last processed `lastGoodStreamId`, or zero
   * if no streams were processed.
   *
   * @param lastGoodStreamId the last stream ID processed, or zero if no streams were processed.
   * @param errorCode reason for closing the connection.
   * @param debugData only valid for HTTP/2; opaque debug data to send.
   */

A "middleware" is a function that works with every **request** before it is processed by any specific *path operation*. And also with every **response** before returning it.

* It takes each **request** that comes to your application.
* It can then do something to that **request** or run any needed code.
* Then it passes the **request** to be processed by the rest of the application (by some *path operation*).

  }

  /**
   * Streams lines from a {@link Readable} object, stopping when the processor returns {@code false}
   * or all lines have been read and returning the result produced by the processor. Does not close
   * {@code readable}. Note that this method may not fully consume the contents of {@code readable}
   * if the processor stops processing early.
   *

    static final Set<String> PROCESSOR_TYPE_IDS =
            Set.of(Type.PROCESSOR, Type.CLASSPATH_PROCESSOR, Type.MODULAR_PROCESSOR);

    private static final Map<String, String> DERIVE_MAP = Map.of(
            Type.JAR, Type.PROCESSOR,
            Type.CLASSPATH_JAR, Type.CLASSPATH_PROCESSOR,
            Type.MODULAR_JAR, Type.MODULAR_PROCESSOR);

    @Override