private static void RegisterExtensionServices(IServiceCollection services, IExtension extension, IConfiguration extensionConfiguration)
{
var extensionServiceProviderPaths = extension.GetOptions <string[]>(ExtensionServiceProvidersSectionName);
if (extensionServiceProviderPaths is null)
{
return;
}
foreach (var path in extensionServiceProviderPaths)
{
try
{
using var assemblyStream = extension.GetFile(path);
if (assemblyStream is null)
{
Console.WriteLine($"ERROR: Could not find extension service provider assembly {path} in extension {extension.Name}");
continue;
}
// AssemblyLoadContext is not available in .NET Standard 2.0
// var assembly = System.Runtime.Loader.AssemblyLoadContext.Default.LoadFromStream(assemblyStream);
var assemblyBytes = new byte[assemblyStream.Length];
assemblyStream.Read(assemblyBytes, 0, assemblyBytes.Length);
var assembly = Assembly.Load(assemblyBytes);
var serviceProviders = assembly.GetTypes()
.Where(t => t.IsPublic && !t.IsAbstract && typeof(IExtensionServiceProvider).IsAssignableFrom(t))
.Select(t => Activator.CreateInstance(t))
.Cast <IExtensionServiceProvider>();
foreach (var sp in serviceProviders)
{
sp.AddServices(new ExtensionServiceConfiguration(services, extensionConfiguration));
}
}
catch (FileLoadException)
{
}
catch (BadImageFormatException)
{
}
}
}