/// <summary>
/// Register a service with callback for configuration.
/// </summary>
/// <param name="serviceType">Type of <see cref="IDreamService"/> to register.</param>
/// <param name="configurationCallback">Callback for modifying the created <see cref="IDreamServiceConfigurationBuilder"/> instance.</param>
/// <returns>
/// True if service was configured (only possible to be false if <see cref="IDreamServiceConfigurationBuilder.SkipIfExists"/> was
/// specified and a service already exists at the configured path.
/// </returns>
public bool RegisterService(Type serviceType, Action <IDreamServiceConfigurationBuilder> configurationCallback)
{
var config = new DreamServiceConfigurationBuilder(serviceType);
configurationCallback(config);
return(RegisterService(config));
}
/// <summary>
/// Scan the provided assembly for <see cref="IDreamService"/> that live in a namespace ending with .Services and configure them.
/// </summary>
/// <param name="assembly">Assembly to scan.</param>
/// <param name="filter">Filter expression to exclude services.</param>
/// <param name="configurationCallback">Configuration callback expression to be called for each <see cref="Type"/> to be configured.</param>
public void ScanAssemblyForServices(Assembly assembly, Func <Type, bool> filter, Action <Type, IDreamServiceConfigurationBuilder> configurationCallback)
{
Func <Type, bool> defaultFilter = t => true;
var serviceTypes = from t in assembly.GetTypes()
where !string.IsNullOrEmpty(t.Namespace) &&
t.Namespace.EndsWith(".Services") &&
t.IsA <IDreamService>() &&
t.Name.EndsWith("Service") &&
(filter ?? defaultFilter)(t)
select t;
foreach (var serviceType in serviceTypes)
{
var config = new DreamServiceConfigurationBuilder(serviceType);
if (configurationCallback != null)
{
configurationCallback(serviceType, config);
}
if (RegisterService(config))
{
continue;
}
var existing = _registrations[config.Path];
throw new InvalidOperationException(string.Format("Can't register service '{0}' because '{1}' is already bound to path '{2}'",
serviceType,
existing.ServiceType,
config.Path
));
}
}
private bool RegisterService(DreamServiceConfigurationBuilder config)
{
lock (_registrations) {
if (_registrations.ContainsKey(config.Path))
{
if (config.SkipServiceIfExists)
{
return(false);
}
}
_registrations[config.Path] = config;
}
return(true);
}
