Azure Function File Upload

upload.cs

public static class UploadFile
{
    [FunctionName("UploadFile")]
    public static async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Anonymous, "post", Route = "file/add")] HttpRequest uploadFile,
        [Blob("files", FileAccess.Write, Connection = "StorageAccountConnectionString")] CloudBlobContainer blobContainer,
        [Table("metadata", Connection = "TableConnectionString")] CloudTable metadataTable,
        ILogger log)
    {
        var fileName = Guid.NewGuid().ToString();
        await blobContainer.CreateIfNotExistsAsync();
        var cloudBlockBlob = blobContainer.GetBlockBlobReference(fileName);
        await cloudBlockBlob.UploadFromStreamAsync(uploadFile.Body);
        await metadataTable.CreateIfNotExistsAsync();
        var addOperation = TableOperation.Insert(new FileMetadata
        {
            RowKey = fileName,
            PartitionKey = fileName,
        });
        await metadataTable.ExecuteAsync(addOperation);
        return new CreatedResult(string.Empty, fileName);
    }
}