/// <summary>
/// Initialize a new <see cref="LocalJudgeNodeManager"/> instance.
/// </summary>
/// <param name="options">The options.</param>
/// <exception cref="ArgumentNullException"><paramref name="options"/> is null.</exception>
public LocalJudgeNodeManager(JudgeNodeManagerOptions options)
{
Contract.NotNull(options, nameof(options));
_options = options;
_store = new Dictionary <IPAddress, JudgeNodeInfo>();
}
/// <summary>
/// Add <see cref="LocalJudgeNodeManager"/> as the desired implementation of <see cref="IJudgeNodeManager"/>
/// into the given service collection.
/// </summary>
/// <param name="services">The service collection.</param>
/// <param name="optionCallback">The callback for configuring options.</param>
/// <exception cref="ArgumentNullException"><paramref name="services"/> is null.</exception>
public static IServiceCollection AddLocalJudgeNodeManager(this IServiceCollection services,
Action <JudgeNodeManagerOptions> optionCallback = null)
{
Contract.NotNull(services, nameof(services));
var options = new JudgeNodeManagerOptions();
optionCallback?.Invoke(options);
return(services.AddSingleton(options)
.AddSingleton <IJudgeNodeManager, LocalJudgeNodeManager>());
}