public void InitBasicPolicies()
{
_errorHandlingPolicies = new List<WatcherErrorHandlingPolicy>();
var accessDeniedPolicy = new WatcherErrorHandlingPolicy(
typeof (Win32Exception),
"When an 'access denied' win32 exception occures, refresh the wrapped watcher.",
exception =>
(exception as Win32Exception)?.NativeErrorCode == 5 ?
WatcherErrorHandlingType.RefreshAndSwallow :
WatcherErrorHandlingType.Forward);
var netNameDeletedPolicy = new WatcherErrorHandlingPolicy(
typeof (Win32Exception),
"When a 'net name deleted' win32 exception occures, refresh the wrapped watcher.",
exception =>
(exception as Win32Exception)?.NativeErrorCode == 64 ?
WatcherErrorHandlingType.RefreshAndSwallow :
WatcherErrorHandlingType.Forward);
_errorHandlingPolicies.Add(accessDeniedPolicy);
_errorHandlingPolicies.Add(netNameDeletedPolicy);
}
/// <summary>
/// Tries to remove a specific error handling policy
/// </summary>
/// <param name="pol">The policy to remove</param>
/// <returns>
/// true if policy is successfully removed; otherwise, false. This method also returns
/// false if policy was not found in the policies collection.
/// </returns>
public bool RemovePolicy(WatcherErrorHandlingPolicy pol)
{
return _errorHandlingPolicies.Remove(pol);
}
/// <summary>
/// Adds an error handling policy
/// </summary>
/// <param name="pol"></param>
public void AddPolicy(WatcherErrorHandlingPolicy pol)
{
_errorHandlingPolicies.Add(pol);
}
private void InitPollerErrorPolicies()
{
var dirNotFoundPolicy = new WatcherErrorHandlingPolicy(typeof(DirectoryNotFoundException),
"When the poller indicates a 'directory not found' exception check if it's the main watched directory or sub-dir." +
"If it's the main directory - refresh the watcher.",
exception => (exception as DirectoryNotFoundException)?.Path() == Path
? WatcherErrorHandlingType.Refresh | WatcherErrorHandlingType.Swallow
: WatcherErrorHandlingType.Forward);
var unAuthPolicy = new WatcherErrorHandlingPolicy(typeof(UnauthorizedAccessException),
"When the poller indicates an 'unauthorized access' exception check if it's access was denied to the main watched directory or file/sub-dir." +
"If it's the main directory - refresh the watcher.",
exception => (exception as UnauthorizedAccessException)?.Path() == Path
? WatcherErrorHandlingType.Refresh | WatcherErrorHandlingType.Swallow
: WatcherErrorHandlingType.Forward);
AddPolicy(dirNotFoundPolicy);
AddPolicy(unAuthPolicy);
}