/// <summary>
/// FTP 서버의 <paramref name="directory"/>의 하위 디렉토리 및 파일명을 열거합니다.
/// </summary>
/// <param name="ftpClient"></param>
/// <param name="directory"></param>
/// <param name="recursive">재귀 호출 여부</param>
/// <returns></returns>
public static Task <IList <string> > ListDirectoryTask(this FtpClient ftpClient, string directory, bool recursive)
{
if (IsDebugEnabled)
{
log.Debug("List all entry in the specified directory. directory=[{0}], recursive=[{1}]", directory, recursive);
}
var paths = new List <string>();
directory = FtpClient.AdjustDir(directory);
paths.Add(directory);
if (!directory.EndsWith(FtpClient.FTP_PATH_DELIMITER))
{
directory += FtpClient.FTP_PATH_DELIMITER;
}
var task = ftpClient.ListDirectoryTask(directory);
if (recursive)
{
task.ContinueWith(dt => dt.Result
.Select(subDir => FtpClient.PathCombine(directory, subDir))
.RunEach(subPath => paths.AddRange(ftpClient.ListDirectoryTask(subPath, true).Result)),
TaskContinuationOptions.ExecuteSynchronously);
}
else
{
paths.AddRange(task.Result);
}
return(Task.Factory.FromResult <IList <string> >(paths));
}
/// <summary>
/// FTP 서버의 지정한 디렉토리를 삭제합니다.
/// </summary>
/// <param name="ftpClient"></param>
/// <param name="remoteDir"></param>
/// <param name="recursive"></param>
/// <returns></returns>
public static Task <bool> DeleteDirectoryTask(this FtpClient ftpClient, string remoteDir, bool recursive)
{
remoteDir.ShouldNotBeWhiteSpace("remoteDir");
if (IsDebugEnabled)
{
log.Debug("원격 디렉토리를 비동기 방식으로 삭제합니다... remoteDir=[{0}], recursive=[{1}]", remoteDir, recursive);
}
if (ftpClient.DirectoryExistsTask(remoteDir).Result == false)
{
return(Task.Factory.FromResult(true));
}
if (recursive)
{
// 디렉토리에 파일이 있을 경우에는 삭제가 안됩니다!!!
//
var subDirs = ftpClient.ListDirectoryTask(remoteDir).Result;
if (subDirs.Count > 0)
{
var tasks = new List <Task>();
foreach (var dir in subDirs)
{
var task = ftpClient.DeleteDirectoryTask(remoteDir + FtpClient.FTP_PATH_DELIMITER + dir, true);
tasks.Add(task);
}
Task.WaitAll(tasks.ToArray());
}
}
return(ftpClient.DeleteDirectoryTask(remoteDir));
}
/// <summary>
/// FTP 서버에 <paramref name="directory"/> 가 존재하는지 확인합니다.
/// </summary>
/// <param name="ftpClient"></param>
/// <param name="directory"></param>
/// <returns></returns>
public static Task <bool> DirectoryExistsTask(this FtpClient ftpClient, string directory)
{
if (IsDebugEnabled)
{
log.Debug("원격 디렉토리가 존재하는지 확인하는 비동기 작업을 directory=[{0}]", directory);
}
directory = FtpClient.AdjustDir(directory);
if (directory == FtpClient.FTP_PATH_DELIMITER)
{
return(Task.Factory.FromResult(true));
}
var tcs = new TaskCompletionSource <bool>();
var isSuccess = false;
try {
// 디렉토리에 대해 리스트를 조회해본다.
// 조회가 된다면, 서브 디렉토리가 없더라도, 550 예외가 발생하지 않으므로, 디렉토리가 존재한다.
// 디렉토리가 없다면 550 예외가 발생하므로, false 이다.
//
ftpClient.ListDirectoryTask(directory).Wait();
if (IsDebugEnabled)
{
log.Debug("원격 디렉토리가 존재합니다. directory=[{0}]", directory);
}
isSuccess = true;
}
catch (AggregateException age) {
age.Handle(error => true);
}
tcs.TrySetResult(isSuccess);
return(tcs.Task);
}