# Background Tasks { #background-tasks }

You can define background tasks to be run *after* returning a response.

This is useful for operations that need to happen after a request, but that the client doesn't really have to be waiting for the operation to complete before receiving the response.

This includes, for example:

* Email notifications sent after performing an action:

# Tarefas em segundo plano { #background-tasks }

Você pode definir tarefas em segundo plano para serem executadas *após* retornar uma resposta.

Isso é útil para operações que precisam acontecer após uma request, mas que o cliente não precisa realmente esperar a operação terminar antes de receber a resposta.

Isso inclui, por exemplo:

* Notificações por e-mail enviadas após realizar uma ação:

    - tutorial/header-param-models.md
    - tutorial/response-model.md
    - tutorial/extra-models.md
    - tutorial/response-status-code.md
    - tutorial/request-forms.md
    - tutorial/request-form-models.md
    - tutorial/request-files.md
    - tutorial/request-forms-and-files.md
    - tutorial/handling-errors.md
    - tutorial/path-operation-configuration.md
    - tutorial/encoder.md
    - tutorial/body-updates.md

name: Create Release

on:
  push:
    tags:
      - 'v*.*.*'

permissions:
  contents: write
  pull-requests: read

jobs:
  create_release:
    name: Create Release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Generate Release Notes and Publish
        id: generate_release_notes
        uses: release-drafter/release-drafter@v6

        ProblemCollector problems = ProblemCollectorFactory.newInstance(null);

        PersistedToolchains globalToolchains = readToolchains(request.getGlobalToolchainsSource(), request, problems);

        PersistedToolchains userToolchains = readToolchains(request.getUserToolchainsSource(), request, problems);

@invoices_callback_router.post(
    "{$callback_url}/invoices/{$request.body.id}", response_model=InvoiceEventReceived
)
def invoice_notification(body: InvoiceEvent):
    pass  # pragma: nocover


class Event(BaseModel):
    name: str
    total: float


events_callback_router = APIRouter()


@events_callback_router.get("{$callback_url}/events/{$request.body.title}")
def event_callback(event: Event):

    /**
     * Uses previously stored resumption data to enrich an existing execution request.
     * @param request The execution request that will be enriched.
     * @param rootProject The root project that is being built.
     */
    void applyResumptionData(MavenExecutionRequest request, MavenProject rootProject);

    /**
     * Removes previously stored resumption data.

        field.set(reader, eventDispatcher);

        ArtifactDescriptorRequest request = new ArtifactDescriptorRequest();

        request.addRepository(newTestRepository());

        request.setArtifact(new DefaultArtifact("org.apache.maven.its", "dep-mng5459", "jar", "0.4.0-SNAPSHOT"));

        // execute
        reader.readArtifactDescriptor(session, request);

        // verify
        verify(eventDispatcher).dispatch(event.capture());

    /**
     * Sets the merge mode used to combine repositories declared in the POM with the repositories specified in this
     * request.
     *
     * @param mode The repository merge mode, must not be {@code null}.
     * @return This request for chaining, never {@code null}.
     * @see #setRemoteRepositories(List)
     */
    ProjectBuildingRequest setRepositoryMerging(RepositoryMerging mode);

		},
		{
			// invalid; ongoing restore object request can't have expiry set on it.
			restoreHdr:     `ongoing-request="true", expiry-date="Fri, 21 Dec 2012 00:00:00 GMT"`,
			expectedStatus: restoreObjStatus{},
			expectedErr:    errRestoreHDRMalformed,
		},
		{
			// invalid; completed restore object request must have expiry set on it.
			restoreHdr:     `ongoing-request="false"`,
			expectedStatus: restoreObjStatus{},