# OpenAPI Webhooks

There are cases where you want to tell your API **users** that your app could call *their* app (sending a request) with some data, normally to **notify** of some type of **event**.

This means that instead of the normal process of your users sending requests to your API, it's **your API** (or your app) that could **send requests to their system** (to their API, their app).

This is normally called a **webhook**.

## Webhooks steps

    return AnalysisApiFe10TestConfiguratorFactory.INSTANCE.createConfigurator(
      new AnalysisApiTestConfiguratorFactoryData(
        FrontendKind.Fe10,
        TestModuleKind.Source,
        AnalysisSessionMode.Normal,
        AnalysisApiMode.Ide
      )
    );
  }

  @Test
  public void testAllFilesPresentInBuiltins() {

As `get_db()` is a normal `def` function, **FastAPI** will make it run in a threadpool, with a *copy* of the "context", holding the same value for the context variable (the `dict` with the reset database state). Then it can add database state to that `dict`, like the connection, etc.

### Other utility functions

Any other utility function that you call directly can be created with normal `def` or `async def` and FastAPI won't affect the way you call it.

    Se você tem algum conhecimento técnico (corrotinas, threads, blocking etc) e está curioso sobre como o FastAPI controla o `async def` vs normal `def`, vá em frente.

### Funções de operação de rota

Quando você declara uma *função de operação de rota* com `def` normal ao invés de `async def`, ela é rodada em uma threadpool externa que então é aguardada, ao invés de ser chamada diretamente (ela poderia bloquear o servidor).

    return AnalysisApiFe10TestConfiguratorFactory.INSTANCE.createConfigurator(
      new AnalysisApiTestConfiguratorFactoryData(
        FrontendKind.Fe10,
        TestModuleKind.Source,
        AnalysisSessionMode.Normal,
        AnalysisApiMode.Ide
      )
    );
  }

  @Test
  public void testAllFilesPresentInHaveCommonSubtype() {

## HTTPX

Even if your **FastAPI** application uses normal `def` functions instead of `async def`, it is still an `async` application underneath.

 * after the garbage collector reclaims the referent. This is a simpler alternative to using a
 * {@link ReferenceQueue}.
 *
 * <p>Unlike a normal phantom reference, this reference will be cleared automatically.
 *
 * @author Bob Lee
 * @since 2.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven;

import org.apache.maven.plugin.MojoFailureException;

/**
 * Exception which occurs when a normal (i.e. non-aggregator) mojo fails to
 * execute. In this case, the mojo failed while executing against a particular
 * project instance, so we can wrap the {@link MojoFailureException} with context

    return AnalysisApiFe10TestConfiguratorFactory.INSTANCE.createConfigurator(
      new AnalysisApiTestConfiguratorFactoryData(
        FrontendKind.Fe10,
        TestModuleKind.Source,
        AnalysisSessionMode.Normal,
        AnalysisApiMode.Ide
      )
    );
  }

  @Test
  public void testAllFilesPresentInSymbolRestoreFromDifferentModule() {