/// <summary>
/// Starts async copy of source to target block blob.
/// ********** NOTE that block blob copy operations are ASYNCHRONOUS - just returning from this method does NOT mean the copy has already finished.
/// Returns the target block blob so you can optionally check or wait on targetBlob.CopyState.Status to transition from Pending.
/// Source and target storage accounts and containers can be the same, or different for greater flexibility.
/// </summary>
/// <param name="sourceStorageAccount"></param>
/// <param name="sourceContainerName"></param>
/// <param name="sourceBlobPathInContainer"></param>
/// <param name="targetStorageAccount"></param>
/// <param name="targetContainerName"></param>
/// <param name="targetBlobPathInContainer"></param>
/// <returns>CloudBlockBlob on OpResult.Output - cast Output to CloudBlockBlob to use</returns>
public async Task <OpResult> CopyBlockBlobAsync(CloudStorageAccount sourceStorageAccount, string sourceContainerName, string sourceBlobPathInContainer, CloudStorageAccount targetStorageAccount, string targetContainerName, string targetBlobPathInContainer)
{
OpResult opResult = new OpResult()
{
Succeeded = false
};
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(sourceStorageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(sourceContainerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(sourceBlobPathInContainer).Validations);
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(targetStorageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(targetContainerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(targetBlobPathInContainer).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
// Cleanup
// Blob paths should NOT have leading slashes
if (sourceBlobPathInContainer.StartsWith("/"))
{
sourceBlobPathInContainer = sourceBlobPathInContainer.Substring(1);
}
if (targetBlobPathInContainer.StartsWith("/"))
{
targetBlobPathInContainer = targetBlobPathInContainer.Substring(1);
}
try
{
CloudBlobContainer sourceContainer = await GetContainerAsync(sourceStorageAccount, sourceContainerName, false);
CloudBlobContainer targetContainer = await GetContainerAsync(targetStorageAccount, targetContainerName, true);
CloudBlockBlob sourceBlob = sourceContainer.GetBlockBlobReference(sourceBlobPathInContainer);
CloudBlockBlob targetBlob = targetContainer.GetBlockBlobReference(targetBlobPathInContainer);
await targetBlob.StartCopyAsync(sourceBlob);
opResult.Succeeded = true;
opResult.Output = targetBlob;
}
catch (Exception ex)
{
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
return(opResult);
}
/// <summary>
/// Deletes a blob asynchronously.
/// </summary>
/// <param name="storageAccount"></param>
/// <param name="containerName"></param>
/// <param name="targetBlobPath"></param>
/// <returns></returns>
public async Task <OpResult> DeleteBlobByPathAsync(CloudStorageAccount storageAccount, string containerName, string targetBlobPath)
{
OpResult opResult = new OpResult();
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(storageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(containerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(targetBlobPath).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
// Cleanup
// Blob paths should NOT have leading slashes
if (targetBlobPath.StartsWith("/"))
{
targetBlobPath = targetBlobPath.Substring(1);
}
CloudBlob blob = await this.GetBlobFromPathAsync(storageAccount, containerName, targetBlobPath);
if (blob != null)
{
try
{
await blob.DeleteIfExistsAsync();
opResult.Succeeded = true;
}
catch (Exception ex)
{
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
}
else
{
opResult.Succeeded = false;
opResult.Message = "Specified blob does not exist.";
}
return(opResult);
}
public async Task <OpResult> UploadFileFromUrlAsync(CloudStorageAccount storageAccount, string containerName, string sourceFileUrl, string targetBlobPath)
{
OpResult opResult = new OpResult()
{
Succeeded = false
};
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(storageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(containerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(targetBlobPath).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
try
{
WebRequest request = WebRequest.Create(sourceFileUrl);
request.Timeout = 120000;
request.UseDefaultCredentials = true;
request.Proxy.Credentials = request.Credentials;
using (WebResponse response = await request.GetResponseAsync())
{
using (Stream stream = response.GetResponseStream())
{
opResult = await this.UploadStreamAsync(storageAccount, containerName, stream, targetBlobPath);
}
}
}
catch (Exception ex)
{
// TODO log exception
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
return(opResult);
}
public async Task <OpResult> WriteBlobAsync(string storageAccountConnectionString, string containerName, string fileContents, string filePath)
{
OpResult opResult = new OpResult();
CloudStorageAccount storageAccount = Common.GetStorageAccount(storageAccountConnectionString);
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(storageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(containerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateFilePath(filePath).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
// Serialize file contents to byte array
byte[] bytes = Encoding.UTF8.GetBytes(fileContents);
try
{
CloudBlobContainer container = await this.GetContainerAsync(storageAccount, containerName, true);
CloudBlockBlob blob = container.GetBlockBlobReference(filePath);
// Upload the file
await blob.UploadFromByteArrayAsync(bytes, 0, bytes.Length);
// Result is success if the blob exists - the upload operation does not return a status so we check success after the upload
opResult.Succeeded = await blob.ExistsAsync();
}
catch (Exception ex)
{
// TODO log error
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
return(opResult);
}
public async Task <OpResult> UploadStreamAsync(CloudStorageAccount storageAccount, string containerName, Stream sourceStream, string targetBlobPath)
{
OpResult opResult = new OpResult()
{
Succeeded = false
};
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(storageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(containerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(targetBlobPath).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
try
{
byte[] bytes;
using (var memoryStream = new MemoryStream())
{
await sourceStream.CopyToAsync(memoryStream);
bytes = memoryStream.ToArray();
}
opResult = await this.UploadByteArrayAsync(storageAccount, containerName, bytes, targetBlobPath);
}
catch (Exception ex)
{
// TODO log exception
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
return(opResult);
}
public async Task <OpResult> UploadByteArrayAsync(CloudStorageAccount storageAccount, string containerName, byte[] bytes, string targetBlobPath)
{
OpResult opResult = new OpResult()
{
Succeeded = false
};
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(storageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(containerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(targetBlobPath).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
try
{
CloudBlobContainer container = await this.GetContainerAsync(storageAccount, containerName, true);
CloudBlockBlob blob = container.GetBlockBlobReference(targetBlobPath);
// Upload the file
await blob.UploadFromByteArrayAsync(bytes, 0, bytes.Length);
// Result is success if the blob exists - the upload operation does not return a status so we check success after the upload
opResult.Succeeded = await blob.ExistsAsync();
}
catch (Exception ex)
{
// TODO log exception
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
return(opResult);
}
public async Task <OpResult> UploadFileFromLocalAsync(CloudStorageAccount storageAccount, string containerName, string sourceFilePath, string targetBlobPath)
{
OpResult opResult = new OpResult()
{
Succeeded = false
};
ValidationResult validationResult = new ValidationResult();
validationResult.Validations.AddItems(Validator.ValidateStorageAccount(storageAccount).Validations);
validationResult.Validations.AddItems(Validator.ValidateContainerName(containerName).Validations);
validationResult.Validations.AddItems(Validator.ValidateBlobPath(targetBlobPath).Validations);
validationResult.Validations.AddItems(Validator.ValidateFilePath(sourceFilePath).Validations);
opResult.ValidationResult = validationResult;
if (!validationResult.IsValid)
{
return(opResult);
}
try
{
using (FileStream stream = File.OpenRead(sourceFilePath))
{
opResult = await this.UploadStreamAsync(storageAccount, containerName, stream, targetBlobPath);
}
}
catch (Exception ex)
{
// TODO log exception
opResult.Succeeded = false;
opResult.Message = ErrorUtil.GetText(ex);
opResult.Exception = ex;
}
return(opResult);
}
