StreamDataServiceAzure.cs :  » Bloggers » dasBlog » newtelligence » DasBlog » Runtime » Azure » C# / CSharp Open Source

using System.IO;
using Microsoft.Samples.ServiceHosting.StorageClient;

namespace newtelligence.DasBlog.Runtime.Azure{
    public class StreamDataServiceAzure
    {
        protected StorageAccountInfo AccountInfo { get; private set; }

        public StreamDataServiceAzure()
        {
            AccountInfo = StorageAccountInfo.GetDefaultBlobStorageAccountFromConfiguration();
        }

        public virtual Stream LoadFileStream(string filename, string category)
        {
            var container = GetContainer(category);
            if (!container.DoesBlobExist(filename))
            {
                return null;
            }

            Stream stream = new MemoryStream();

            BlobContents contents = new BlobContents(stream);

            var properties = container.GetBlob(filename, contents, false);

            if (properties.ContentLength == 0)
            {
                return null;
            }

            return stream;
        }

        public virtual void SaveFileStream(string filename, string category, Stream file)
        {
            var container = GetContainer(category);

            BlobProperties prop = new BlobProperties(filename);
            prop.ContentType = "text/xml; charset=UTF-8";

            BlobContents contents = new BlobContents(file);

            container.CreateBlob(prop, contents, true);
        }

        protected BlobContainer GetContainer(string category)
        {
            BlobStorage store = BlobStorage.Create(AccountInfo);
            var container = store.GetBlobContainer(category);
            container.CreateContainer();

            return container;
        }
    }
}