/// <inheritdoc />
protected override void LoadPlugins(PluginCallback pluginCallback, IProgressMonitor progressMonitor)
{
// Attempt to read the old cache.
string cacheFilePath;
try
{
Hash64 hash = new Hash64();
foreach (string pluginPath in PluginPaths)
hash = hash.Add(pluginPath);
foreach (string constant in InitialPreprocessorConstants)
hash = hash.Add(constant);
hash = hash.Add(InstallationId.ToString());
string cacheDirPath = GetCurrentUserPluginCacheDir();
string cacheFileName = hash + ".xml";
cacheFilePath = Path.Combine(cacheDirPath, cacheFileName);
if (Directory.Exists(cacheDirPath))
{
if (File.Exists(cacheFilePath))
{
Cache oldCache = ReadCacheFile(cacheFilePath);
if (oldCache != null)
{
foreach (var pluginInfo in oldCache.PluginInfos)
pluginCallback(pluginInfo.Plugin, new DirectoryInfo(pluginInfo.BaseDirectory), pluginInfo.PluginFile);
return;
}
}
}
else
{
Directory.CreateDirectory(cacheDirPath);
}
}
catch (Exception)
{
// Fallback on any failure.
// There can be all sorts of weird security exceptions that will prevent
// us from manipulating the local application data directory.
base.LoadPlugins(pluginCallback, progressMonitor);
return;
}
// Load plugin metadata.
var newCache = new Cache
{
InstallationId = InstallationId.ToString()
};
base.LoadPlugins((plugin, baseDirectory, pluginFile) =>
{
newCache.PluginInfos.Add(new CachePluginInfo
{
Plugin = plugin,
BaseDirectory = baseDirectory.FullName,
PluginFile = pluginFile,
PluginFileModificationTime = File.GetLastWriteTimeUtc(pluginFile)
});
pluginCallback(plugin, baseDirectory, pluginFile);
}, progressMonitor);
// Attempt to store it in the cache.
try
{
WriteCacheFile(cacheFilePath, newCache);
}
catch (Exception)
{
// Ignore any failure.
}
}
private void WriteCacheFile(string cacheFilePath, Cache cache)
{
using (var xmlWriter = XmlWriter.Create(cacheFilePath))
{
CacheXmlSerializer.Serialize(xmlWriter, cache);
}
}
