/// <summary> Starts the Plug-in Service. </summary>
public void Start()
{
if (_started)
{
return;
}
_log.Info("Starting plug-in service");
string currentDirectoryPath = Directory.GetCurrentDirectory();
string pluginDirectoryPath = $"{currentDirectoryPath}{PluginDirectoryPath}";
DirectoryInfo directoryInfo = new DirectoryInfo(pluginDirectoryPath);
if (!directoryInfo.Exists)
{
throw new DirectoryNotFoundException(pluginDirectoryPath);
}
FileInfo[] marcFiles = directoryInfo.GetFiles("*.marc", SearchOption.TopDirectoryOnly);
// Find all available plug-ins
for (int i = -1; ++i < marcFiles.Length;)
{
FileInfo marcFile = marcFiles[i];
IBundle bundle = BundleFactory.Instance.CreateBundle(marcFile);
IPluginInfo pluginInfo = RegisterBundle(bundle);
if (pluginInfo == null)
{
continue;
}
_foundPlugins.AddLast(pluginInfo);
// Handling additional resources
string[] bundleResources = bundle.GetResources(@"includes/*");
for (int j = -1; ++j != bundleResources.Length;)
{
string rsx = bundleResources[j];
string[] split = rsx.Split('/');
string name = split.Last();
string bundlePath = rsx;
IncludeMapping inclMap = new IncludeMapping {
Name = name, BundlePath = bundlePath, Bundle = bundle
};
_includeMappings.AddLast(inclMap);
}
}
// Check dependencies
using (LinkedList <IPluginInfo> .Enumerator enmtor = _foundPlugins.GetEnumerator()) {
while (enmtor.MoveNext())
{
IPluginInfo pluginInfo = enmtor.Current;
bool dependenciesSatisfied = CheckDependencies(pluginInfo, _foundPlugins, out string missingDependencyName);
if (!dependenciesSatisfied)
{
string message = $"Can not provide '{pluginInfo}' " +
$"because of missing dependency '{missingDependencyName}'. " +
"Plug-in will not be available!";
_log.Error(message);
continue;
}
SetPluginState(pluginInfo, EPluginState.Provided);
_providedPlugins.AddLast(pluginInfo);
}
}
_started = true;
_log.Info("Plug-in Service started");
}