/// <summary>
/// Lets the server know that this thread is about to begin a series of related operations that must all occur
/// on the same connection. The return value of this method implements IDisposable and can be placed in a
/// using statement (in which case RequestDone will be called automatically when leaving the using statement).
/// </summary>
/// <param name="serverInstance">The server instance this request should be tied to.</param>
/// <returns>A helper object that implements IDisposable and calls <see cref="RequestDone"/> from the Dispose method.</returns>
internal virtual IDisposable RequestStart(MongoServerInstance serverInstance)
{
var endPoint = serverInstance.EndPoint;
var serverSelector = new EndPointServerSelector(endPoint);
var coreReadPreference = serverInstance.GetServerDescription().Type.IsWritable() ? ReadPreference.Primary : ReadPreference.Secondary;
return(RequestStart(serverSelector, coreReadPreference));
}
/// <summary>
/// Lets the server know that this thread is about to begin a series of related operations that must all occur
/// on the same connection. The return value of this method implements IDisposable and can be placed in a
/// using statement (in which case RequestDone will be called automatically when leaving the using statement).
/// </summary>
/// <param name="initialDatabase">One of the databases involved in the related operations.</param>
/// <param name="serverInstance">The server instance this request should be tied to.</param>
/// <returns>A helper object that implements IDisposable and calls <see cref="RequestDone"/> from the Dispose method.</returns>
public virtual IDisposable RequestStart(MongoDatabase initialDatabase, MongoServerInstance serverInstance)
{
var address = serverInstance.Address;
var endPoint = new DnsEndPoint(address.Host, address.Port);
var serverSelector = new EndPointServerSelector(endPoint);
var coreReadPreference = serverInstance.GetServerDescription().Type.IsWritable() ? ReadPreference.Primary : ReadPreference.Secondary;
return(RequestStart(serverSelector, coreReadPreference));
}