public static byte[] HttpFetchHandler(BinaryResourceDescriptor descriptor)
{
byte[] resource = null;
// Fetch resource from HTTP location
try
{
var uri = (descriptor.LocationDescriptor as HttpLocationDescriptor).Uri;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (Stream stream = response.GetResponseStream())
using (var ms = new MemoryStream())
{
int count = 0;
do
{
byte[] buf = new byte[1024];
count = stream.Read(buf, 0, 1024);
ms.Write(buf, 0, count);
} while (stream.CanRead && count > 0);
resource = ms.ToArray();
}
}
catch (Exception ex)
{
DebugEx.Assert(ex, "Error fetching resource from specified HTTP location");
}
return(resource);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public static BinaryResourceDescriptor CreateDescriptor(byte[] resource, eBinaryResourceLocationType locationType, object locationDescriptor)
{
BinaryResourceDescriptor descriptor = new BinaryResourceDescriptor();
try
{
// Construct descriptor
if (locationType.Equals(eBinaryResourceLocationType.Http))
{
var locDesc = locationDescriptor as HttpLocationDescriptor;
descriptor.LocationDescriptorJson = (new HttpLocationDescriptor {
Uri = locDesc.Uri
}).ToJSON();
// Use Dropbox's REST API to upload resource
}
else if (locationType.Equals(eBinaryResourceLocationType.RedisDB))
{
var locDesc = locationDescriptor as RedisDBLocationDescriptor;
descriptor.LocationDescriptorJson = (new RedisDBLocationDescriptor()).ToJSON();
}
}
catch (Exception ex)
{
descriptor = null;
DebugEx.Assert(ex, "Error constructing descriptor for specified resource");
}
return(descriptor);
}
public static byte[] RedisDBFetchHandler(BinaryResourceDescriptor descriptor)
{
byte[] resource = null;
// Fetch resource from redisDB location
return(resource);
}
/// <summary>
/// Get resource based on given descriptor
/// </summary>
/// <param name="descriptor"></param>
/// <returns></returns>
public static byte[] GetResource(BinaryResourceDescriptor descriptor)
{
byte[] resource = null;
try
{
if (FetchHandlers.ContainsKey(descriptor.LocationType))
{
resource = FetchHandlers[descriptor.LocationType](descriptor);
}
else
{
DebugEx.TraceError("No handler for resource descriptor of type: " + descriptor.LocationType.ToString());
}
}
catch (Exception ex)
{
DebugEx.Assert(ex, "Error getting resource from specified resource descriptor");
}
return(resource);
}
public static MemoryStream GetResourceAsStream(BinaryResourceDescriptor descriptor)
{
byte[] byteResource = GetResource(descriptor);
return(new MemoryStream(byteResource));
}
