/// <summary>
/// Creates a new algorithm instance. Checks configuration for a specific type name, and if present will
/// force it to find that one
/// </summary>
/// <param name="assemblyPath">Physical path of the algorithm dll.</param>
/// <returns>Algorithm instance</returns>
public IAlgorithm CreateAlgorithmInstance(string assemblyPath)
{
string error;
IAlgorithm algorithm;
var algorithmName = Config.Get("algorithm-type-name");
// don't force load times to be fast here since we're running locally, this allows us to debug
// and step through some code that may take us longer than the default 10 seconds
var loader = new Loader(TimeSpan.FromHours(1), names => names.Single(name => MatchTypeName(name, algorithmName)));
var complete = loader.TryCreateAlgorithmInstanceWithIsolator(assemblyPath, out algorithm, out error);
if (!complete) throw new Exception(error + ": try re-building algorithm.");
return algorithm;
}
/********************************************************
* PUBLIC METHODS
*********************************************************/
/// <summary>
/// Creates a new algorithm instance. Verified there's only one defined in the assembly and requires
/// instantiation to take less than 10 seconds
/// </summary>
/// <param name="assemblyPath">Physical location of the assembly.</param>
/// <returns>Algorithm instance.</returns>
public IAlgorithm CreateAlgorithmInstance(string assemblyPath)
{
string error;
IAlgorithm algorithm;
// limit load times to 10 seconds and force the assembly to have exactly one derived type
var loader = new Loader(TimeSpan.FromSeconds(10), names => names.SingleOrDefault());
bool complete = loader.TryCreateAlgorithmInstanceWithIsolator(assemblyPath, out algorithm, out error);
if (!complete) throw new Exception(error + " Try re-building algorithm.");
return algorithm;
}
/// <summary>
/// Create a new instance of an algorithm from a physical dll path.
/// </summary>
/// <param name="assemblyPath">The path to the assembly's location</param>
/// <returns>A new instance of IAlgorithm, or throws an exception if there was an error</returns>
public IAlgorithm CreateAlgorithmInstance(string assemblyPath, Language language)
{
string error;
IAlgorithm algorithm;
// limit load times to 10 seconds and force the assembly to have exactly one derived type
var loader = new Loader(language, TimeSpan.FromSeconds(15), names =>
{
// if there's only one use that guy
if (names.Count == 1)
{
return names.Single();
}
// if there's more than one then check configuration for which one we should use
var algorithmName = Config.Get("algorithm-type-name");
return names.Single(x => x.Contains(algorithmName));
});
var complete = loader.TryCreateAlgorithmInstanceWithIsolator(assemblyPath, out algorithm, out error);
if (!complete) throw new Exception(error + " Try re-building algorithm.");
return algorithm;
}
