public override void SetAndReleaseItemExclusive(HttpContext context, string id,
SessionStateStoreData item, object lockId, bool newItem)
{
Debug.Assert(context != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
_providerRetry(() =>
{
TableServiceContext svc = CreateDataServiceContext();
SessionRow session;
if (!newItem)
{
session = GetSession(id, svc);
if (session == null || session.Lock != (int)lockId)
{
Debug.Assert(false);
return;
}
}
else
{
session = new SessionRow(id, _applicationName);
session.Lock = 1;
session.LockDateUtc = DateTime.UtcNow;
}
session.Initialized = true;
Debug.Assert(session.Timeout >= 0);
session.Timeout = item.Timeout;
session.ExpiresUtc = DateTime.UtcNow.AddMinutes(session.Timeout);
session.Locked = false;
// yes, we always create a new blob here
session.BlobName = GetBlobNamePrefix(id) + Guid.NewGuid().ToString("N");
// Serialize the session and write the blob
byte[] items, statics;
SerializeSession(item, out items, out statics);
string serializedItems = Convert.ToBase64String(items);
string serializedStatics = Convert.ToBase64String(statics);
MemoryStream output = new MemoryStream();
StreamWriter writer = new StreamWriter(output);
try
{
writer.WriteLine(serializedItems);
writer.WriteLine(serializedStatics);
writer.Flush();
// for us, it shouldn't matter whether newItem is set to true or false
// because we always create the entire blob and cannot append to an
// existing one
_blobProvider.UploadStream(session.BlobName, output);
writer.Close();
output.Close();
}
catch (Exception e)
{
if (!newItem)
{
ReleaseItemExclusive(svc, session, lockId);
}
throw new ProviderException("Error accessing the data store.", e);
}
finally
{
if (writer != null)
{
writer.Close();
}
if (output != null)
{
output.Close();
}
}
if (newItem)
{
svc.AddObject(_tableName, session);
svc.SaveChangesWithRetries();
}
else
{
// Unlock the session and save changes
ReleaseItemExclusive(svc, session, lockId);
}
});
}
public override void SetPropertyValues(SettingsContext context, SettingsPropertyValueCollection collection)
{
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (context == null)
{
throw new ArgumentNullException("context");
}
// Get information about the user who owns the profile
string username = (string)context["UserName"];
bool authenticated = (bool)context["IsAuthenticated"];
if (String.IsNullOrEmpty(username) || collection.Count == 0)
{
return;
}
if (!VerifyUsername(ref username))
{
return;
}
// lets create the blob containing the profile without checking whether the user exists
// Format the profile data for saving
string names = String.Empty;
string values = String.Empty;
byte[] buf = null;
EncodeProfileData(ref names, ref values, ref buf, collection, authenticated);
// Do nothing if no properties need saving
if (string.IsNullOrEmpty(names))
{
return;
}
// Save the profile data
MemoryStream stream = null;
StreamWriter writer = null;
string blobName = null;
try
{
stream = new MemoryStream();
writer = new StreamWriter(stream);
writer.WriteLine(names);
if (!String.IsNullOrEmpty(values))
{
UnicodeEncoding encoding = new UnicodeEncoding();
writer.WriteLine(Convert.ToBase64String(encoding.GetBytes(values)));
}
else
{
writer.WriteLine();
}
if (buf != null && buf.Length > 0)
{
writer.WriteLine(Convert.ToBase64String(buf));
}
else
{
writer.WriteLine();
}
writer.Flush();
blobName = GetProfileBlobPrefix(username) + Guid.NewGuid().ToString("N");
Debug.Assert(blobName.Length <= Configuration.MaxStringPropertySizeInChars);
stream.Seek(0, SeekOrigin.Begin);
_blobProvider.UploadStream(blobName, stream);
CreateOrUpdateUserAndProfile(username, authenticated, DateTime.UtcNow, blobName, (int)stream.Length);
}
catch (Exception e)
{
throw new ProviderException("Error writing property values!", e);
}
finally
{
if (writer != null)
{
writer.Close();
}
if (stream != null)
{
stream.Close();
}
}
}