private void BeginFileWatcher()
{
_timer = new Timer(OnTimer, null, Timeout.Infinite, Timeout.Infinite);
_fileSystemWatcher = new FileSystemWatcher(_fileSystem.MapPath("~/"))
{
IncludeSubdirectories = true,
NotifyFilter = NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName
};
_fileSystemWatcher.Changed += OnFileChanged;
_fileSystemWatcher.Created += OnFileChanged;
_fileSystemWatcher.Deleted += OnFileChanged;
_fileSystemWatcher.Renamed += OnFileChanged;
_fileSystemWatcher.EnableRaisingEvents = true;
void OnFileChanged(object source, FileSystemEventArgs e)
{
if (_watchedFiles.Contains(e.FullPath))
{
_timer.Change(500, Timeout.Infinite);
}
}
void OnTimer(object state)
{
lock (_watchedFiles)
{
var oldPool = _pool;
_pool = CreatePool();
_scriptLoadException = null;
oldPool.Dispose();
}
}
}
/// <summary>
/// Creates a new JavaScript engine pool.
/// </summary>
private ZeroJsPool CreatePool()
{
var poolConfig = new ZeroJsPoolConfig
{
EngineFactory = EngineFactory,
StartEngines = _config.StartEngines,
MaxEngines = _config.MaxEngines,
MaxUsagesPerEngine = _config.MaxUsagesPerEngine,
};
var pool = new ZeroJsPool(poolConfig);
return(pool);
}
/// <summary>
/// Initializes a new instance of the <see cref="JavaScriptEngineFactory"/> class.
/// </summary>
public JavaScriptEngineFactory(
ReactConfiguration config,
ICache cache,
IFileSystem fileSystem
)
{
_config = config;
_cache = cache;
_fileSystem = fileSystem;
_pool = CreatePool();
_watchedFiles = _config.ScriptFilesWithoutTransform.Select(_fileSystem.MapPath).ToHashSet();
BeginFileWatcher();
}
public void Dispose()
{
if (disposed.Set())
{
_fileSystemWatcher.Dispose();
_fileSystemWatcher = null;
_timer.Dispose();
_timer = null;
if (_pool != null)
{
_pool.Dispose();
_pool = null;
}
}
}