C# CloudBlobContainer.DeleteAsync方法代码示例

 /// <summary>
 /// Return a task that asynchronously delete the specified container.
 /// </summary>
 /// <param name="container">CloudBlobContainer object</param>
 /// <param name="accessCondition">Access condition</param>
 /// <param name="requestOptions">Blob request option</param>
 /// <param name="operationContext">Operation context</param>
 /// <param name="cmdletCancellationToken">Cancellation token</param>
 /// <returns>Return a task that asynchronously delete the specified container.</returns>
 public Task DeleteContainerAsync(CloudBlobContainer container, AccessCondition accessCondition, BlobRequestOptions requestOptions, OperationContext operationContext, CancellationToken cancellationToken)
 {
     return container.DeleteAsync(accessCondition, requestOptions, operationContext, cancellationToken);
 }

 /// <summary>
 /// Test container deletion, expecting success.
 /// </summary>
 /// <param name="testContainer">The container.</param>
 /// <param name="testAccessCondition">The access condition to use.</param>
 private async Task ContainerDeleteExpectLeaseSuccessAsync(CloudBlobContainer testContainer, AccessCondition testAccessCondition)
 {
     await testContainer.DeleteAsync(testAccessCondition, null /* options */, null);
 }

 /// <summary>
 /// Test container deletion, expecting lease failure.
 /// </summary>
 /// <param name="testContainer">The container.</param>
 /// <param name="testAccessCondition">The failing access condition to use.</param>
 /// <param name="expectedErrorCode">The expected error code.</param>
 /// <param name="description">The reason why these calls should fail.</param>
 private async Task ContainerDeleteExpectLeaseFailureAsync(CloudBlobContainer testContainer, AccessCondition testAccessCondition, HttpStatusCode expectedStatusCode, string expectedErrorCode, string description)
 {
     OperationContext operationContext = new OperationContext();
     await TestHelper.ExpectedExceptionAsync(
         async () => await testContainer.DeleteAsync(testAccessCondition, null /* options */, operationContext),
         operationContext,
         description + " (Delete)",
         expectedStatusCode,
         expectedErrorCode);
 }

        /// <summary>
        /// Verifies the behavior of a lease while the lease holds. Once the lease expires, this method confirms that write operations succeed.
        /// The test is cut short once the <c>testLength</c> time has elapsed.
        /// </summary>
        /// <param name="leasedContainer">The container.</param>
        /// <param name="duration">The duration of the lease.</param>
        /// <param name="testLength">The maximum length of time to run the test.</param>
        /// <param name="tolerance">The allowed lease time error.</param>
        internal async Task ContainerAcquireRenewLeaseTestAsync(CloudBlobContainer leasedContainer, TimeSpan? duration, TimeSpan testLength, TimeSpan tolerance)
        {
            OperationContext operationContext = new OperationContext();
            DateTime beginTime = DateTime.UtcNow;

            while (true)
            {
                try
                {
                    // Attempt to delete the container with no lease ID.
                    await leasedContainer.DeleteAsync(null, null, operationContext);

                    // The delete succeeded, which means that the lease must have expired.

                    // If the lease was infinite then there is an error because it should not have expired.
                    Assert.IsNotNull(duration, "An infinite lease should not expire.");

                    // The lease should be past its expiration time.
                    Assert.IsTrue(DateTime.UtcNow - beginTime > duration - tolerance, "Deletes should not succeed while lease is present.");

                    // Since the lease has expired (and the container was deleted), the test is over.
                    return;
                }
                catch (Exception)
                {
                    if (operationContext.LastResult.ExtendedErrorInformation.ErrorCode == BlobErrorCodeStrings.LeaseIdMissing)
                    {
                        // We got this error because the lease has not expired yet.

                        // Make sure the lease is not past its expiration time yet.
                        DateTime currentTime = DateTime.UtcNow;
                        if (duration.HasValue)
                        {
                            Assert.IsTrue(currentTime - beginTime < duration + tolerance, "Deletes should succeed after a lease expires.");
                        }

                        // End the test early if necessary
                        if (currentTime - beginTime > testLength)
                        {
                            // The lease has not expired, but we're not waiting any longer.
                            return;
                        }
                    }
                    else
                    {
                        throw;
                    }
                }

                // Attempt to write to and read from the container. This should always succeed.
                await leasedContainer.SetMetadataAsync();
                await leasedContainer.FetchAttributesAsync();

                // Wait 1 second before trying again.
                await Task.Delay(TimeSpan.FromSeconds(1));
            }
        }

 /// <summary>
 /// Test container deletion, expecting success.
 /// </summary>
 /// <param name="testContainer">The container.</param>
 /// <param name="testAccessCondition">The access condition to use.</param>
 private void ContainerDeleteExpectLeaseSuccessTask(CloudBlobContainer testContainer, AccessCondition testAccessCondition)
 {
     testContainer.DeleteAsync(testAccessCondition, null /* options */, null /* operationContext */).Wait();
 }

  /// <summary>
 /// Test container deletion, expecting lease failure.
 /// </summary>
 /// <param name="testContainer">The container.</param>
 /// <param name="testAccessCondition">The failing access condition to use.</param>
 /// <param name="expectedErrorCode">The expected error code.</param>
 /// <param name="description">The reason why these calls should fail.</param>
 private void ContainerDeleteExpectLeaseFailureTask(CloudBlobContainer testContainer, AccessCondition testAccessCondition, HttpStatusCode expectedStatusCode, string expectedErrorCode, string description)
 {
     TestHelper.ExpectedExceptionTask(
         testContainer.DeleteAsync(testAccessCondition, null /* options */, null /* operationContext */),
         description + " (Delete)",
         expectedStatusCode,
         expectedErrorCode);
 }