/**
 * Implementation of {@code Futures#withTimeout}.
 *
 * <p>Future that delegates to another but will finish early (via a {@link TimeoutException} wrapped
 * in an {@link ExecutionException}) if the specified duration expires. The delegate future is
 * interrupted and cancelled if it times out.
 */
@J2ktIncompatible
@GwtIncompatible
final class TimeoutFuture<V extends @Nullable Object> extends FluentFuture.TrustedFuture<V> {

import java.net.HttpURLConnection
import java.net.InetAddress
import java.net.ProtocolException
import java.net.SocketTimeoutException
import java.nio.charset.StandardCharsets.UTF_8
import java.time.Duration
import java.util.concurrent.TimeUnit
import javax.net.ssl.HttpsURLConnection
import kotlin.test.assertFailsWith
import mockwebserver3.SocketEffect.CloseSocket
import okhttp3.Headers

func (d *dataUsageCache) load(ctx context.Context, store objectIO, name string) error {
	// By default, empty data usage cache
	*d = dataUsageCache{}

	load := func(name string, timeout time.Duration) (bool, error) {
		// Abandon if more than time.Minute, so we don't hold up scanner.
		// drive timeout by default is 2 minutes, we do not need to wait longer.
		ctx, cancel := context.WithTimeout(ctx, timeout)

		select {
		case <-ctx.Done():
			return ctx.Err()
		default:
			// Sleep and stagger to avoid blocked CPU and thundering
			// herd upon start up sequence.
			time.Sleep(25*time.Millisecond + time.Duration(rand.Int63n(int64(100*time.Millisecond))))
			retries++
			// after 20 retries start logging that servers are not reachable yet
			if retries >= 20 {

  // Sessions are added to this map in TF_NewSession, and removed in
  // TF_DeleteSession.
  // TF_Graph may only / must be deleted when
  //   sessions.size() == 0 && delete_requested == true
  //
  // TODO(b/74949947): mutations currently trigger a warning instead of a bad
  // status, this should be reverted when possible.
  tensorflow::gtl::FlatMap<TF_Session*, tensorflow::string> sessions
      TF_GUARDED_BY(mu);

}

func ptr[T any](a T) *T {
	return &a
}

// sleepContext sleeps for d duration or until ctx is done.
func sleepContext(ctx context.Context, d time.Duration) error {
	select {
	case <-ctx.Done():
		return ctx.Err()
	case <-time.After(d):
	}
	return nil
}

// helper type to return either item or error.

You can also create an environment variable only for a **specific program invocation**, that is only available to that program, and only for its duration.

To do that, create it right before the program itself, on the same line:

<div class="termy">

```console
// Create an env var MY_NAME in line for this program call

License
-------
This code is under the [Apache License, Version 2.0, January 2004][license].

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    client =
      client
        .newBuilder()
        .readTimeout(Duration.ofSeconds(1))
        .build()
    executeSynchronously("/a").assertBody("abc")

    // Second request: time out after 250ms.
    client =
      client
        .newBuilder()
        .readTimeout(Duration.ofMillis(250))
        .build()
    val request = Request.Builder().url(server.url("/b")).build()

		}
	}
}

// TestParsePreSignV4 - Validates the parsing logic of Presignied v4 request from its url query values.
func TestParsePreSignV4(t *testing.T) {
	// converts the duration in seconds into string format.
	getDurationStr := strconv.Itoa

	// used in expected preSignValues, preSignValues.Date is of type time.Time .
	queryTime := UTCNow()

	sampleTimeStr := UTCNow().Format(yyyymmdd)