private async Task <bool> ExistsOnCloudAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
requestContext = ChasmRequestContext.Ensure(requestContext);
var opContext = new OperationContext
{
ClientRequestID = requestContext.CorrelationId,
CustomUserAgent = requestContext.CustomUserAgent
};
string blobName = DeriveBlobName(objectId);
CloudBlobContainer objectsContainer = _objectsContainer.Value;
CloudAppendBlob blobRef = objectsContainer.GetAppendBlobReference(blobName);
bool exists = await blobRef.ExistsAsync(default, opContext, cancellationToken)
private async Task <bool> ExistsOnCloudAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
requestContext = ChasmRequestContext.Ensure(requestContext);
var opContext = new OperationContext
{
ClientRequestID = requestContext.CorrelationId,
CustomUserAgent = requestContext.CustomUserAgent
};
CloudTable objectsTable = _objectsTable.Value;
TableOperation op = DataEntity.BuildExistsOperation(objectId);
try
{
TableResult result = await objectsTable.ExecuteAsync(op, default, opContext, cancellationToken)
public override async Task <bool> ExistsAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
requestContext = ChasmRequestContext.Ensure(requestContext);
// Try disk repo first
bool exists = await _diskRepo.ExistsAsync(objectId, requestContext, cancellationToken)
.ConfigureAwait(false);
// Else go to cloud
if (!exists)
{
exists = await ExistsOnCloudAsync(objectId, requestContext, cancellationToken)
.ConfigureAwait(false);
}
return(exists);
}