public static DeltaDatabaseConnection OpenFromDeltaConfig(string deltaConfigPath)
{
if (!File.Exists(deltaConfigPath))
{
throw new Exception("Delta config file was not found! Requested location: " + deltaConfigPath);
}
var config = JsonConvert.DeserializeObject <DeltaConnectionConfig>(File.ReadAllText(deltaConfigPath));
var c = new DeltaDatabaseConnection();
c.OpenDatabase(config.mongodb_connection, config.env);
return(c);
}