public ExtensionProvider(
IEnumerable <IExtensionLoader> loaders,
IUpgradeAssistantConfigurationLoader configurationLoader,
ExtensionInstanceFactory factory,
IExtensionLocator extensionLocator,
IOptions <ExtensionOptions> options,
ILogger <ExtensionProvider> logger)
{
if (extensionLocator is null)
{
throw new ArgumentNullException(nameof(extensionLocator));
}
if (options is null)
{
throw new ArgumentNullException(nameof(options));
}
_factory = factory ?? throw new ArgumentNullException(nameof(factory));
_loaders = loaders ?? throw new ArgumentNullException(nameof(loaders));
_configurationLoader = configurationLoader ?? throw new ArgumentNullException(nameof(configurationLoader));
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
_extensions = new Lazy <IEnumerable <ExtensionInstance> >(() =>
{
var list = new List <ExtensionInstance>();
var opts = options.Value;
// Required extensions are required for all commands UA may handle, as opposed to other extensions that augment certain commands
foreach (var path in opts.RequiredExtensions)
{
LoadPath(path, isDefault: true);
}
// Required extensions must load, otherwise they may be turned off
if (!opts.LoadExtensions)
{
return(list);
}
foreach (var path in opts.DefaultExtensions)
{
LoadPath(path, isDefault: true);
}
foreach (var path in opts.ExtensionPaths)
{
LoadPath(path, isDefault: false);
}
foreach (var path in Registered.Select(extensionLocator.GetInstallPath))
{
LoadPath(path, isDefault: false);
}
logger.LogInformation("Loaded {Count} extensions", list.Count);
if (opts.AdditionalOptions.Any())
{
list.Add(LoadOptionsExtension(opts.AdditionalOptions));
}
list.AddRange(opts.Extensions);
return(list);
void LoadPath(string path, bool isDefault)
{
if (OpenExtension(path) is ExtensionInstance extension)
{
if (isDefault)
{
extension = extension with {
Version = opts.CurrentVersion
};
}
if (opts.CheckMinimumVersion && extension.MinUpgradeAssistantVersion is Version minVersion && minVersion > opts.CurrentVersion)
{
logger.LogWarning("Could not load extension from {Path}. Requires at least v{Version} of Upgrade Assistant and current version is {UpgradeAssistantVersion}.", path, minVersion, opts.CurrentVersion);
}
else
{
list.Add(extension);
}
}
else
{
logger.LogWarning("Could not load extension from {Path}", path);
}
}
});
}