## Context Managers { #context-managers }

### Qué son los "Context Managers" { #what-are-context-managers }

Los "Context Managers" son aquellos objetos de Python que puedes usar en una declaración `with`.

func (d *dynamicSleeper) Timer(ctx context.Context) func() {
	t := time.Now()
	return func() {
		doneAt := time.Now()
		d.Sleep(ctx, doneAt.Sub(t))
	}
}

// Sleep sleeps the specified time multiplied by the sleep factor.
// If the factor is updated the sleep will be done again with the new factor.
func (d *dynamicSleeper) Sleep(ctx context.Context, base time.Duration) {
	for {

	}

	var limit uint32 = 100

	batch := NewBatch[TestItem](BatchConfig[TestItem]{
		Limit:         limit,
		Store:         store,
		CommitTimeout: 5 * time.Minute,
		Log: func(ctx context.Context, err error, id string, errKind ...any) {
			t.Log(err)
		},
	})
	defer batch.Close()

	for i := 0; i < int(limit); i++ {
		if err := batch.Add(testItem); err != nil {

			c = &resp
		} else {
			rctx, cancel := context.WithTimeout(ctx, 5*time.Second)
			c, err = rpc.GetMetacacheListing(rctx, *o)
			cancel()
		}
		if err != nil {
			if errors.Is(err, context.Canceled) {
				// Context is canceled, return at once.
				// request canceled, no entries to return
				return entries, io.EOF
			}
			if !IsErr(err, context.DeadlineExceeded, grid.ErrDisconnected) {

	for _, resource := range resources {
		_, lockTaken := l.lockMap[resource]
		if lockTaken {
			return false
		}
	}
	return true
}

func (l *localLocker) Lock(ctx context.Context, args dsync.LockArgs) (reply bool, err error) {
	if len(args.Resources) > maxDeleteList {
		return false, fmt.Errorf("internal error: localLocker.Lock called with more than %d resources", maxDeleteList)
	}

	return nil
}

// Notify notifies notification endpoint if configured regarding job failure or success.
func (r BatchJobExpire) Notify(ctx context.Context, body io.Reader) error {
	if r.NotificationCfg.Endpoint == "" {
		return nil
	}

	ctx, cancel := context.WithTimeout(ctx, 10*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, r.NotificationCfg.Endpoint, body)

/**
 * SMB 3.1.1 Compression Capabilities negotiate context.
 *
 * This context is used during SMB2 negotiation to negotiate compression
 * algorithms for SMB3 data compression support.
 */
public class CompressionNegotiateContext implements NegotiateContextRequest, NegotiateContextResponse {

    private static final Logger log = LoggerFactory.getLogger(CompressionNegotiateContext.class);

    // Context type

def run(playwright: Playwright) -> None:
    browser = playwright.chromium.launch(headless=False)
    # Update the viewport manually
    context = browser.new_context(viewport={"width": 960, "height": 1080})
    page = context.new_page()
    page.goto("http://localhost:8000/docs")
    page.get_by_role("button", name="Item", exact=True).click()
    page.set_viewport_size({"width": 960, "height": 700})

        const val sourceRoots = "sourceRoots"
        const val sourceCompilationClasspath = "sourceCompilationClasspath"
    }

    @Suppress("unchecked_cast")
    override fun execute(context: ViolationCheckContext) {
        (context.userData as MutableMap<String, Any?>)[REPOSITORY_CONTEXT_KEY] = BinaryCompatibilityRepository.openRepositoryFor(
            param(Params.sourceRoots),
            param(Params.sourceCompilationClasspath)

	erasureDirs []string
	objLayer    ObjectLayer
	router      *mux.Router
	done        context.CancelFunc
}

// prepareAdminErasureTestBed - helper function that setups a single-node
// Erasure backend for admin-handler tests.
func prepareAdminErasureTestBed(ctx context.Context) (*adminErasureTestBed, error) {
	ctx, cancel := context.WithCancel(ctx)

	// reset global variables to start afresh.
	resetTestGlobals()