public async Task CloudBlobContainerGetBlobReferenceFromServerAsync()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
CloudBlockBlob blockBlob = container.GetBlockBlobReference("bb");
await blockBlob.PutBlockListAsync(new List <string>());
CloudPageBlob pageBlob = container.GetPageBlobReference("pb");
await pageBlob.CreateAsync(0);
ICloudBlob blob1 = await container.GetBlobReferenceFromServerAsync("bb");
Assert.IsInstanceOfType(blob1, typeof(CloudBlockBlob));
ICloudBlob blob2 = await container.GetBlobReferenceFromServerAsync("pb");
Assert.IsInstanceOfType(blob2, typeof(CloudPageBlob));
ICloudBlob blob3 = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlob.Uri);
Assert.IsInstanceOfType(blob3, typeof(CloudBlockBlob));
ICloudBlob blob4 = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlob.Uri);
Assert.IsInstanceOfType(blob4, typeof(CloudPageBlob));
}
finally
{
container.DeleteIfExistsAsync().AsTask().Wait();
}
}
private static async Task EnsureCopiedToContainerAsync(ILeasedLogFile logFile, CloudBlobContainer targetContainer, Exception e = null)
{
var archivedBlob = targetContainer.GetBlockBlobReference(logFile.Blob.Name);
if (!await archivedBlob.ExistsAsync())
{
await archivedBlob.StartCopyFromBlobAsync(logFile.Blob);
archivedBlob = (CloudBlockBlob)await targetContainer.GetBlobReferenceFromServerAsync(logFile.Blob.Name);
while (archivedBlob.CopyState.Status == CopyStatus.Pending)
{
Task.Delay(TimeSpan.FromSeconds(1)).Wait();
archivedBlob = (CloudBlockBlob)await targetContainer.GetBlobReferenceFromServerAsync(logFile.Blob.Name);
}
await archivedBlob.FetchAttributesAsync();
if (e != null)
{
// add the job error to the blob's metadata
if (archivedBlob.Metadata.ContainsKey("JobError"))
{
archivedBlob.Metadata["JobError"] = e.ToString().Replace("\r\n", string.Empty);
}
else
{
archivedBlob.Metadata.Add("JobError", e.ToString().Replace("\r\n", string.Empty));
}
await archivedBlob.SetMetadataAsync();
}
else if (archivedBlob.Metadata.ContainsKey("JobError"))
{
archivedBlob.Metadata.Remove("JobError");
await archivedBlob.SetMetadataAsync();
}
}
}
/// <summary>
/// Return a task that asynchronously get the blob reference from server
/// </summary>
/// <param name="container">CloudBlobContainer object</param>
/// <param name="blobName">Blob name</param>
/// <param name="accessCondition">Access condition</param>
/// <param name="options">Blob request options</param>
/// <param name="operationContext">Operation context</param>
/// <param name="cmdletCancellationToken">Cancellation token</param>
/// <returns>A task object that asynchronously get the blob reference from server</returns>
public async Task<ICloudBlob> GetBlobReferenceFromServerAsync(CloudBlobContainer container, string blobName, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext, CancellationToken cancellationToken)
{
try
{
ICloudBlob blob = await container.GetBlobReferenceFromServerAsync(blobName, accessCondition, options, operationContext, cancellationToken);
return blob;
}
catch (StorageException e)
{
if (e.IsNotFoundException())
{
return null;
}
else
{
throw;
}
}
}
public async Task CloudBlobContainerGetBlobReferenceFromServerAsync()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
SharedAccessBlobPolicy policy = new SharedAccessBlobPolicy()
{
Permissions = SharedAccessBlobPermissions.Read,
SharedAccessStartTime = DateTimeOffset.UtcNow.AddMinutes(-5),
SharedAccessExpiryTime = DateTimeOffset.UtcNow.AddMinutes(30),
};
CloudBlockBlob blockBlob = container.GetBlockBlobReference("bb");
await blockBlob.PutBlockListAsync(new List <string>());
CloudPageBlob pageBlob = container.GetPageBlobReference("pb");
await pageBlob.CreateAsync(0);
CloudAppendBlob appendBlob = container.GetAppendBlobReference("ab");
await appendBlob.CreateOrReplaceAsync();
CloudBlobClient client;
ICloudBlob blob;
blob = await container.GetBlobReferenceFromServerAsync("bb");
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.Equals(blockBlob.StorageUri));
CloudBlockBlob blockBlobSnapshot = await((CloudBlockBlob)blob).CreateSnapshotAsync();
await blob.SetPropertiesAsync();
Uri blockBlobSnapshotUri = new Uri(blockBlobSnapshot.Uri.AbsoluteUri + "?snapshot=" + blockBlobSnapshot.SnapshotTime.Value.UtcDateTime.ToString("o"));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlobSnapshotUri);
AssertAreEqual(blockBlobSnapshot.Properties, blob.Properties);
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(blockBlobSnapshot.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.GetBlobReferenceFromServerAsync("pb");
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.Equals(pageBlob.StorageUri));
CloudPageBlob pageBlobSnapshot = await((CloudPageBlob)blob).CreateSnapshotAsync();
await blob.SetPropertiesAsync();
Uri pageBlobSnapshotUri = new Uri(pageBlobSnapshot.Uri.AbsoluteUri + "?snapshot=" + pageBlobSnapshot.SnapshotTime.Value.UtcDateTime.ToString("o"));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlobSnapshotUri);
AssertAreEqual(pageBlobSnapshot.Properties, blob.Properties);
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(pageBlobSnapshot.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.GetBlobReferenceFromServerAsync("ab");
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.Equals(appendBlob.StorageUri));
CloudAppendBlob appendBlobSnapshot = await((CloudAppendBlob)blob).CreateSnapshotAsync();
await blob.SetPropertiesAsync();
Uri appendBlobSnapshotUri = new Uri(appendBlobSnapshot.Uri.AbsoluteUri + "?snapshot=" + appendBlobSnapshot.SnapshotTime.Value.UtcDateTime.ToString("o"));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(appendBlobSnapshotUri);
AssertAreEqual(appendBlobSnapshot.Properties, blob.Properties);
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(appendBlobSnapshot.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlob.Uri);
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(blockBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlob.Uri);
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(pageBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(appendBlob.Uri);
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(appendBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlob.StorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.Equals(blockBlob.StorageUri));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlob.StorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.Equals(pageBlob.StorageUri));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(appendBlob.StorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.Equals(appendBlob.StorageUri));
string blockBlobToken = blockBlob.GetSharedAccessSignature(policy);
StorageCredentials blockBlobSAS = new StorageCredentials(blockBlobToken);
Uri blockBlobSASUri = blockBlobSAS.TransformUri(blockBlob.Uri);
StorageUri blockBlobSASStorageUri = blockBlobSAS.TransformUri(blockBlob.StorageUri);
string appendBlobToken = appendBlob.GetSharedAccessSignature(policy);
StorageCredentials appendBlobSAS = new StorageCredentials(appendBlobToken);
Uri appendBlobSASUri = appendBlobSAS.TransformUri(appendBlob.Uri);
StorageUri appendBlobSASStorageUri = appendBlobSAS.TransformUri(appendBlob.StorageUri);
string pageBlobToken = pageBlob.GetSharedAccessSignature(policy);
StorageCredentials pageBlobSAS = new StorageCredentials(pageBlobToken);
Uri pageBlobSASUri = pageBlobSAS.TransformUri(pageBlob.Uri);
StorageUri pageBlobSASStorageUri = pageBlobSAS.TransformUri(pageBlob.StorageUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlobSASUri);
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(blockBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlobSASUri);
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(pageBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(appendBlobSASUri);
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(appendBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlobSASStorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.Equals(blockBlob.StorageUri));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlobSASStorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.Equals(pageBlob.StorageUri));
blob = await container.ServiceClient.GetBlobReferenceFromServerAsync(appendBlobSASStorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.Equals(appendBlob.StorageUri));
client = new CloudBlobClient(container.ServiceClient.BaseUri, blockBlobSAS);
blob = await client.GetBlobReferenceFromServerAsync(blockBlobSASUri);
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(blockBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
client = new CloudBlobClient(container.ServiceClient.BaseUri, pageBlobSAS);
blob = await client.GetBlobReferenceFromServerAsync(pageBlobSASUri);
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(pageBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
client = new CloudBlobClient(container.ServiceClient.BaseUri, appendBlobSAS);
blob = await client.GetBlobReferenceFromServerAsync(appendBlobSASUri);
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.PrimaryUri.Equals(appendBlob.Uri));
Assert.IsNull(blob.StorageUri.SecondaryUri);
client = new CloudBlobClient(container.ServiceClient.StorageUri, blockBlobSAS);
blob = await client.GetBlobReferenceFromServerAsync(blockBlobSASStorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudBlockBlob));
Assert.IsTrue(blob.StorageUri.Equals(blockBlob.StorageUri));
client = new CloudBlobClient(container.ServiceClient.StorageUri, pageBlobSAS);
blob = await client.GetBlobReferenceFromServerAsync(pageBlobSASStorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudPageBlob));
Assert.IsTrue(blob.StorageUri.Equals(pageBlob.StorageUri));
client = new CloudBlobClient(container.ServiceClient.StorageUri, appendBlobSAS);
blob = await client.GetBlobReferenceFromServerAsync(appendBlobSASStorageUri, null, null, null);
Assert.IsInstanceOfType(blob, typeof(CloudAppendBlob));
Assert.IsTrue(blob.StorageUri.Equals(appendBlob.StorageUri));
}
finally
{
container.DeleteIfExistsAsync().AsTask().Wait();
}
}
/// <summary>
/// Gets a reference to a blob by making a request to the service.
/// </summary>
/// <param name="container">The container.</param>
/// <param name="blobName">The blob name.</param>
/// <returns>A Task object.</returns>
private static async Task GetExistingBlobReferenceAsync(CloudBlobContainer container, string blobName)
{
try
{
// Get a reference to a blob with a request to the server.
// If the blob does not exist, this call will fail with a 404 (Not Found).
ICloudBlob blob = await container.GetBlobReferenceFromServerAsync(blobName);
// The previous call gets the blob's properties, so it's not necessary to call FetchAttributes
// to read a property.
Console.WriteLine("Blob {0} was last modified at {1} local time.", blobName,
blob.Properties.LastModified.Value.LocalDateTime);
}
catch (StorageException e)
{
if (e.RequestInformation.HttpStatusCode == 404)
{
Console.WriteLine("Blob {0} does not exist.", blobName);
Console.WriteLine("Additional error information: " + e.Message);
}
else
{
Console.WriteLine(e.Message);
Console.ReadLine();
throw;
}
}
Console.WriteLine();
}
private async Task TransferBlob(
CloudBlobContainer fromContainer,
CloudBlobContainer toContainer,
string blobName,
CancellationToken cancellationToken)
{
var requestOptions = new BlobRequestOptions()
{
RetryPolicy = new LinearRetry(TimeSpan.FromSeconds(2), 5)
};
var destBlobRef = toContainer.GetBlobReference(blobName);
var blob = fromContainer.GetBlobReference(blobName);
await destBlobRef.StartCopyAsync(
blob.Uri,
AccessCondition.GenerateEmptyCondition(),
AccessCondition.GenerateEmptyCondition(),
requestOptions,
null,
cancellationToken);
var allCopied = false;
var copyFailed = false;
do
{
var blobRef = await toContainer.GetBlobReferenceFromServerAsync(blobName, cancellationToken);
if (blobRef.CopyState.Status == CopyStatus.Aborted || blobRef.CopyState.Status == CopyStatus.Failed)
{
this.logger.LogError($"Cannot copy {blobRef.Uri}");
copyFailed = true;
}
allCopied = blobRef.CopyState.Status != CopyStatus.Pending;
}
while (!allCopied || copyFailed);
await blob.DeleteAsync(cancellationToken);
}
public async Task CloudBlobContainerGetBlobReferenceFromServerAsync()
{
CloudBlobContainer container = GetRandomContainerReference();
try
{
await container.CreateAsync();
SharedAccessBlobPolicy policy = new SharedAccessBlobPolicy()
{
Permissions = SharedAccessBlobPermissions.Read,
SharedAccessStartTime = DateTimeOffset.UtcNow.AddMinutes(-5),
SharedAccessExpiryTime = DateTimeOffset.UtcNow.AddMinutes(30),
};
CloudBlockBlob blockBlob = container.GetBlockBlobReference("bb");
await blockBlob.PutBlockListAsync(new List <string>());
CloudPageBlob pageBlob = container.GetPageBlobReference("pb");
await pageBlob.CreateAsync(0);
ICloudBlob blob1 = await container.GetBlobReferenceFromServerAsync("bb");
Assert.IsInstanceOfType(blob1, typeof(CloudBlockBlob));
CloudBlockBlob blob1Snapshot = await((CloudBlockBlob)blob1).CreateSnapshotAsync();
await blob1.SetPropertiesAsync();
Uri blob1SnapshotUri = new Uri(blob1Snapshot.Uri.AbsoluteUri + "?snapshot=" + blob1Snapshot.SnapshotTime.Value.UtcDateTime.ToString("o"));
ICloudBlob blob1SnapshotReference = await container.ServiceClient.GetBlobReferenceFromServerAsync(blob1SnapshotUri);
AssertAreEqual(blob1Snapshot.Properties, blob1SnapshotReference.Properties);
ICloudBlob blob2 = await container.GetBlobReferenceFromServerAsync("pb");
Assert.IsInstanceOfType(blob2, typeof(CloudPageBlob));
CloudPageBlob blob2Snapshot = await((CloudPageBlob)blob2).CreateSnapshotAsync();
await blob2.SetPropertiesAsync();
Uri blob2SnapshotUri = new Uri(blob2Snapshot.Uri.AbsoluteUri + "?snapshot=" + blob2Snapshot.SnapshotTime.Value.UtcDateTime.ToString("o"));
ICloudBlob blob2SnapshotReference = await container.ServiceClient.GetBlobReferenceFromServerAsync(blob2SnapshotUri);
AssertAreEqual(blob2Snapshot.Properties, blob2SnapshotReference.Properties);
ICloudBlob blob3 = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlob.Uri);
Assert.IsInstanceOfType(blob3, typeof(CloudBlockBlob));
ICloudBlob blob4 = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlob.Uri);
Assert.IsInstanceOfType(blob4, typeof(CloudPageBlob));
string blockBlobToken = blockBlob.GetSharedAccessSignature(policy);
StorageCredentials blockBlobSAS = new StorageCredentials(blockBlobToken);
Uri blockBlobSASUri = blockBlobSAS.TransformUri(blockBlob.Uri);
string pageBlobToken = pageBlob.GetSharedAccessSignature(policy);
StorageCredentials pageBlobSAS = new StorageCredentials(pageBlobToken);
Uri pageBlobSASUri = pageBlobSAS.TransformUri(pageBlob.Uri);
ICloudBlob blob5 = await container.ServiceClient.GetBlobReferenceFromServerAsync(blockBlobSASUri);
Assert.IsInstanceOfType(blob5, typeof(CloudBlockBlob));
ICloudBlob blob6 = await container.ServiceClient.GetBlobReferenceFromServerAsync(pageBlobSASUri);
Assert.IsInstanceOfType(blob6, typeof(CloudPageBlob));
CloudBlobClient client7 = new CloudBlobClient(container.ServiceClient.BaseUri, blockBlobSAS);
ICloudBlob blob7 = await client7.GetBlobReferenceFromServerAsync(blockBlobSASUri);
Assert.IsInstanceOfType(blob7, typeof(CloudBlockBlob));
CloudBlobClient client8 = new CloudBlobClient(container.ServiceClient.BaseUri, pageBlobSAS);
ICloudBlob blob8 = await client8.GetBlobReferenceFromServerAsync(pageBlobSASUri);
Assert.IsInstanceOfType(blob8, typeof(CloudPageBlob));
}
finally
{
container.DeleteIfExistsAsync().AsTask().Wait();
}
}