private static void SetLength(CloudPageBlob blob, long newLength, ExponentialRetry retryPolicy)
{
TimeSpan?leaseTime = TimeSpan.FromSeconds(15);
var options = new BlobRequestOptions {
RetryPolicy = retryPolicy
};
var leaseId = blob.AcquireLease(leaseTime, null, options: options);
blob.Resize(newLength, new AccessCondition {
LeaseId = leaseId
}, options: options);
blob.ReleaseLease(new AccessCondition {
LeaseId = leaseId
}, options: options);
}
// prevent this blob from being deleted by acquiring a lease on it
private void leaseButton_Click(object sender, EventArgs e)
{
String blobName = null;
// get blob name
if (blobList.SelectedItem == null)
{
MessageBox.Show("No blob selected.", "No blob");
return;
}
else
{
blobName = blobList.SelectedItem.ToString();
}
// get container reference
CloudBlobContainer container = blobClient.GetContainerReference(containerName);
// get blob reference
CloudPageBlob blob = container.GetPageBlobReference(blobName);
// acquire lease
try
{
string newLeaseId = Guid.NewGuid().ToString();
blob.AcquireLease(null, newLeaseId);
MessageBox.Show("Lease " + newLeaseId + " acquired.", "Lease success");
}
catch (Exception ex)
{
// check if there is already a lease on the blob - status code 409
StorageException storageException = ex as StorageException;
if (storageException != null && storageException.RequestInformation.HttpStatusCode == 409)
{
DialogResult answer2 =
MessageBox.Show("There already a lease on this blob", "Lease exists");
}
else
{
MessageBox.Show("Error acquiring lease: " + ex.ToString(), ex.GetType().FullName);
}
}
}
