private void AsyncConnectCallback(IAsyncResult ar)
{
string returnMessage = string.Empty;
try
{
// Retrieve the delegate.
AsyncResult result = (AsyncResult)ar;
AsyncConnectDelegate caller = (AsyncConnectDelegate)result.AsyncDelegate;
// if the database already exists than it is fetched otherwise created
// Call EndInvoke to retrieve the results.
Db = caller.EndInvoke(ar);
if (Db == null)
{
throw new MongoServerConnectionException("Asynchronous server connection failed");
}
returnMessage = "Successful connection";
}
catch (MongoDatabaseConnectionException mdcx)
{
returnMessage = mdcx.Message;
}
catch (Exception ex)
{
//TODO: add additional exception handling
returnMessage = ex.Message;
}
finally
{
_databaseConnectionResetEvent.Set(); // allow dependent process that are waiting via VerifyConnected() to proceed
if (State == MongoServerState.Disconnected)
{
if (ConnectAsyncCompleted != null)
{
ConnectAsyncCompleted(ConnectionResult.Failure, returnMessage);
}
}
else if (State == MongoServerState.Connected)
{
if (ConnectAsyncCompleted != null)
{
ConnectAsyncCompleted(ConnectionResult.Success, returnMessage);
}
}
else
{
if (ConnectAsyncCompleted != null)
{
ConnectAsyncCompleted(ConnectionResult.Failure, returnMessage);
}
}
}
}
/// <summary>
/// Call back method invoked after CreateMongoServerAsync() has completed. Invokes the Connected event to
/// notify subscribers that asynchronous server connection has completed and ServerConnection is ready for use.
/// </summary>
/// <param name="ar"></param>
private void AsyncConnectCallback(IAsyncResult ar)
{
string returnMessage = string.Empty;
try
{
// Retrieve the delegate.
AsyncResult result = (AsyncResult)ar;
AsyncConnectDelegate caller = (AsyncConnectDelegate)result.AsyncDelegate;
// Call EndInvoke to retrieve the results.
_mongoServer = caller.EndInvoke(ar);
if (_mongoServer == null)
{
returnMessage = "Failure";
}
else
{
returnMessage = "Successful";
}
}
catch (MongoDatabaseConnectionException mdcx)
{
returnMessage = mdcx.Message;
}
catch (Exception ex)
{
returnMessage = ex.Message;
}
finally
{
_serverConnectionResetEvent.Set(); // allow dependent process that are waiting via VerifyConnected() to proceed
if (_mongoServer == null)
{
if (ConnectAsyncCompleted != null)
{
ConnectAsyncCompleted(ConnectionResult.Failure, returnMessage);
}
}
else
{
if (ConnectAsyncCompleted != null)
{
ConnectAsyncCompleted(ConnectionResult.Success, returnMessage);
}
}
}
}