static int GetSnapshotCount(ref DateTimeOffset?mostRecentlyUpdatedAt)
{
var valetKeyUrl = ConfigurationManager.AppSettings["BlobValetKeyUrl"];
var destinationUrl = ConfigurationManager.AppSettings["BlobDestinationUrl"];
var blob = BlobContainerValet.GetCloudBlockBlob(valetKeyUrl, new Uri(destinationUrl));
var blobRequestOptions = new BlobRequestOptions();
var snapCount = 0;
mostRecentlyUpdatedAt = null;
foreach (CloudBlockBlob b in blob.Container.ListBlobs(useFlatBlobListing: true, blobListingDetails: BlobListingDetails.Snapshots))
{
snapCount++;
if (mostRecentlyUpdatedAt.HasValue)
{
if (mostRecentlyUpdatedAt.Value < b.SnapshotTime)
{
mostRecentlyUpdatedAt = b.SnapshotTime;
}
}
else
{
mostRecentlyUpdatedAt = b.SnapshotTime;
}
}
return(snapCount);
}
static bool WriteToBlobIfChanged(Uri blobUri, string thumbprint, byte[] contents)
{
Console.Write("[thumbprint = {0} ... ", thumbprint);
var valetKeyUrl = ConfigurationManager.AppSettings["BlobValetKeyUrl"];
var destinationUrl = ConfigurationManager.AppSettings["BlobDestinationUrl"];
var blob = BlobContainerValet.GetCloudBlockBlob(valetKeyUrl, new Uri(destinationUrl));
try
{
blob.FetchAttributes();
}
catch (Microsoft.WindowsAzure.Storage.StorageException ex)
{
// if (Enum.GetName(typeof(RequestResult), ex.RequestInformation.HttpStatusCode) == HttpStatusCode.NotFound))
if (ex.RequestInformation.HttpStatusCode == Convert.ToInt32(HttpStatusCode.NotFound))
{
// write it the first time
WriteBlob(blobUri, thumbprint, contents);
Console.WriteLine(" (created)");
return(true);
}
else
{
throw;
}
}
var oldthumbprint = blob.Metadata["thumbprint"];
if (oldthumbprint != thumbprint)
{
Console.Write("Change detected: {0}... ", DateTime.Now.ToLongTimeString()); // TODO: DateTimeOffset
var snapshot = blob.CreateSnapshot();
WriteBlob(blobUri, thumbprint, contents);
Console.WriteLine("updated.");
return(true);
}
else
{
Console.WriteLine("No change at {0}...", DateTime.Now.ToLongTimeString());
return(false);
}
}