IDictionary <ServiceRegistrationKey, IServiceRegistration> GetNonConflictingRegistrations(IEnumerable <ServiceRegistrationKey> alreadyFound,
IServiceRegistrationProvider provider,
Type serviceTypeFilter)
{
if (alreadyFound == null)
{
throw new ArgumentNullException(nameof(alreadyFound));
}
if (provider == null)
{
throw new ArgumentNullException(nameof(provider));
}
var candidates = (serviceTypeFilter != null)? provider.GetAll(serviceTypeFilter) : provider.GetAll();
if (candidates == null)
{
candidates = new IServiceRegistration[0];
}
return((from registration in candidates
let key = ServiceRegistrationKey.ForRegistration(registration)
where !alreadyFound.Contains(key)
select new { Registration = registration, Key = key })
.ToDictionary(k => k.Key, v => v.Registration));
}
/// <summary>
/// Add the specified component registration.
/// </summary>
/// <param name="registration">Registration.</param>
public void Add(IServiceRegistration registration)
{
if (registration == null)
{
throw new ArgumentNullException(nameof(registration));
}
registration.AssertIsValid();
var key = ServiceRegistrationKey.ForRegistration(registration);
lock (syncRoot)
{
IServiceRegistration removed;
registrations.TryRemove(key, out removed);
registrations.TryAdd(key, registration);
}
}