/// <summary>
/// Produces a collection of assemblies based on a search filter.
/// </summary>
/// <param name="assemblyNameFilter">The assembly name filter.</param>
/// <param name="configurationBuilder">The configuration builder.</param>
/// <param name="logger">The logger.</param>
/// <returns></returns>
public AssemblyLocatorResult DiscoverAssemblies(
Func <AssemblySearchPatternFactory, AssemblySearchPatternFactory> assemblyNameFilter = null,
Action <IDependousConfiguration> configurationBuilder = null, Action <object> logger = null)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
//initialize configuration
var configuration = new DependousConfiguration();
configurationBuilder = configurationBuilder ?? new Action <IDependousConfiguration>((cfg) => { });
configurationBuilder(configuration);
var result = assemblyLocator.Locate(assemblyNameFilter, configuration);
stopwatch.Stop();
result.Duration = stopwatch.Elapsed;
return(result);
}
/// <summary>
/// Attempts to scan through a collection of assemblies looking for dependencies to register with the current IOC container.
/// </summary>
/// <param name="assemblyNameFilter">The assembly name filter.</param>
/// <param name="configurationBuilder">The configuration builder.</param>
/// <param name="logger">The logger.</param>
/// <returns>
/// Enumerable of Dependency
/// </returns>
public DependencyScanResult Scan(
Func <AssemblySearchPatternFactory, AssemblySearchPatternFactory> assemblyNameFilter = null,
Action <IDependousConfiguration> configurationBuilder = null, Action <object> logger = null)
{
var stopwatch = new Stopwatch();
var serviceLifetime = ServiceLifetime.Transient;
stopwatch.Start();
//initialize configuration
var configuration = new DependousConfiguration();
configurationBuilder = configurationBuilder ?? new Action <IDependousConfiguration>((cfg) => { });
configurationBuilder(configuration);
var assemblyResult = assemblyLocator.Locate(assemblyNameFilter, configuration);
assemblyResult.Duration = stopwatch.Elapsed;
var scanResult = new DependencyScanResult();
Parallel.ForEach(assemblyResult.DiscoveredAssemblyNames,
(assemblyName) =>
{
logger?.DynamicInvoke($"Inspecting Assembly {assemblyName.FullName}");
//inspect current assembly and produce a list of types
var assemblyTypeResult = this.assemblyTypeService.GetTypes(assemblyName);
//add any loaded exceptions
scanResult.AddExceptions(assemblyTypeResult.LoaderExceptions);
//save the scanned assembly
scanResult.AddAssembly(assemblyTypeResult.LoadedAssembly);
foreach (var type in assemblyTypeResult.DiscoveredTypes)
{
var dependencyType = type.GetTypeInfo();
var allImplementedInterfaces = dependencyType.ImplementedInterfaces;
//grab the interface used to register this dependency. We'll use it later to determine the lifetime manager
var discoveryInterface = allImplementedInterfaces.FirstOrDefault(i => configuration.AdditionalTypes.Any(x => x.InterfaceType.Equals(i)));
serviceLifetime = configuration.AdditionalTypes.Where(x => x.InterfaceType.Equals(discoveryInterface)).Select(x => x.ServiceLifetime).FirstOrDefault();
//lets see if the user passed any custom discovery interfaces. Only if they didn't already declare a discovery interface
if (discoveryInterface == null)
{
continue;
}
//let's exclude the default discovery interfaces. They aren't useful anymore
allImplementedInterfaces = allImplementedInterfaces.Except(DefaultDiscoveryInterfaces.Interfaces);
//grab the target attribute if any
var targetAttribute = dependencyType.GetCustomAttribute <TargetAttribute>(true);
if (targetAttribute != null)
{
allImplementedInterfaces = allImplementedInterfaces.Intersect(targetAttribute.Interfaces);
}
//grab the named dependency attribute if any
var namedDependency = dependencyType.GetCustomAttribute <NamedDependencyAttribute>(true);
//grab the interceptor attribute if it exists
var interceptor = dependencyType.GetCustomAttribute <InterceptAttribute>(true);
var metadata = new DependencyMetadata(namedDependency?.Name,
allImplementedInterfaces,
dependencyType,
serviceLifetime,
discoveryInterface.GetTypeInfo(),
interceptor?.Interceptor?.GetTypeInfo());
scanResult.AddMetadata(metadata);
}
}
);
stopwatch.Stop();
scanResult.Duration = stopwatch.Elapsed;
scanResult.Configuration = configuration;
return(scanResult);
}
